Best 10 what does a plasticizer do

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What Are Plasticizers and What Do They Do? – Advanced …

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  • Summary: Articles about What Are Plasticizers and What Do They Do? – Advanced … Starting with the basics, a plasticizer is a low-volatility liquid or solid substance that’s added to a raw polymer like a type of plastic or rubber to improve …

  • Match the search results: Despite it’s name, plasticizers are also used in rubber and adhesives, and most surprising, they’re also used in concrete and stucco. Adding one to two percent of a plasticizer to concrete allows less water to be used, creating a stronger, more workable substance, and the same idea appli…

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What are the purpose and usage of Plasticizers? – The …

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  • Summary: Articles about What are the purpose and usage of Plasticizers? – The … Plasticizers are the admixtures used to mix in cement to improve their qualities and make them suitable for construction. It’s effects on concrete:.

  • Match the search results: The utilization of plasticizer is found to improve the attractive characteristics of the plastic or green cement. For making reinforced concrete or mass cement of higher workability these days, it has become a standard practice to utilize plasticizer or superplasticizer. These days the utilization o…

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Plasticiser – Designing Buildings Wiki

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  • Summary: Articles about Plasticiser – Designing Buildings Wiki Plasticisers (admixtures or dispersants) are substances added to materials such as cement mortar mixes (as well as to plaster and concrete) …

  • Match the search results: Washing up liquid is commonly used as a plasticiser in cement mortar. However, it is thought to affect the long-term structural integrity of the mortar as it can add too much air, thereby creating bubbles. The surfactants in washing up liquid may also produce foam if used in excess. These bubbles ma…

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What is a Plasticizer? – Definition from Corrosionpedia

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  • Summary: Articles about What is a Plasticizer? – Definition from Corrosionpedia What Does Plasticizer Mean? A plasticizer is either a non-surface active compound or an active substance added to a suspension, usually a …

  • Match the search results: Plasticizers are also known as dispersing agents, dispersants, softeners or super-plasticizers.

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Plasticizers – Benefits, Trends, Health, and Environmental …

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  • Summary: Articles about Plasticizers – Benefits, Trends, Health, and Environmental … Plasticizers are colorless and odorless esters, mainly phthalates, that increase the elasticity of a material (e.g., polyvinylchloride (PVC)).

  • Match the search results: In Europe, the European Commission, the ECHA, and the EU Member States have undertaken ten-year-long comprehensive scientific assessments of plasticizers under the EU Risk Assessment Regulation. Moreover, the plasticizers industry is committed to the safe and sustainable use of plasticizers and flex…

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Plasticizers: Types, Uses, Classification, Selection & Regulation

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  • Summary: Articles about Plasticizers: Types, Uses, Classification, Selection & Regulation Become an expert by learning the detailed knowledge on plasticizer additives. … but it did encourage appropriate agencies to gather “necessary exposure …

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Plasticizers in Polymers

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  • Summary: Articles about Plasticizers in Polymers Plasticizers do their job by acting as a kind of “lubricant” between segments of polymer chains. Without the plasticizer, those chains of …

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Plasticizer –

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  • Summary: Articles about Plasticizer – Plasticizers are additives that increase the plasticity or fluidity the material to which they are added, these include plastics, cement, concrete, …

  • Match the search results: Adding 2% superplasticizer per unit weight of cement is usually sufficient. However, note that most commercially available superplasticizers come dissolved in water, so the extra water added has to be accounted for in mix proportioning. Adding an excessive amount of superplasticizer will result in e…

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Plasticizers: Materials, Action and Uses | Admixtures

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  • Summary: Articles about Plasticizers: Materials, Action and Uses | Admixtures Introduction to Plasticizers (Water Reducing Agents):. The essence of good quality concrete is the requirement of right workability.

  • Match the search results: The use of plasticizer is found to improve the desirable qualities of the plastic or green concrete. For making reinforced concrete or mass concrete of higher workability nowadays it has become a standard practice to use plasticizer or super plasticizer. Nowadays the use of super plasticizer has bec…

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  • Summary: Articles about PHTHALATE PLASTICIZERS In other words, they do no separate out. Two classes of plasticizer exist: … So how does the addition of the plasticizer facilitate this?

  • Match the search results: Plasticizers are usually inert
    organic materials with high boiling points and low vapor pressures.� Esters are commonly used due to their
    favorable physical interactions with high-molecular-weight polymers.� This physical interaction causes the polymer
    and plasticizer to form a �homogenous physic…

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Multi-read content what does a plasticizer do

Aplasticizers(UK:plasticizer) is a substance added to a material to make it softer and more flexible, to increaseflexibility, to reduce itviscosity, or to reduceFrictionduring production processing.

Plasticizers are often addedpolymerslikePlasticandrubber, to facilitate the handling of raw materials during manufacturing, or to meet the application needs of the final product. For example, plasticizers are often addedpolyvinyl chloride(PVC), otherwise hard and brittle, to make it soft and malleable; This makes it suitable for products such asvinyl floor,clothes, Handbag,pipes, andyarncoating.

Plasticizers are also often addedconcreteformula to make them work better and liquid to pour, thus reducing the amount of water. Also, they are often addedclay,mortar,solid rocketfuels and other pastes before molding and forming. For these applications, plasticizers largely overlap withdispersing.

  • 1 For polymers
  • 1.1 Mechanism of action
    1.2 Options
    1.3 Anti-plasticizer
    1.4 Safety and Toxicity
    1.5 Common polymer plasticizers

    1.5.1 Ortho Phthalates
    1.5.2 Trimellitates
    1.5.3 Adipates, sebacates

    1.6 Organophosphates

    1.6.1 Other

  • 2 Plasticizers for inorganic materials
  • 2.1 Concrete
    2.2 Mortar
    2.3 Energetic materials

    2.3.1 Plasticizers for energetic materials

  • 3 references
  • 4 external links

For polymers[Editor]

Plasticizers for polymers are low volatile liquids or solids. According to 2017 data, the total global plastics market is 7.5 million tons. In North America, 2017 volumes were approximately 1.01 million tonnes and in Europe 1.35 million tonnes, split between different end uses with a trend of chemicals moving towards molecular weight orthophthalates higher (HMW) and alternate types due to regulatory issues related to low molecular weight (LMW) orthophthalates.

Nearly 90% of polymeric plasticizers, the most common beingphthalates ester, be used inPVC, which improves the flexibility and durability of this material.[first]Mainly used in films and cables.[2]

Action mechanism[Editor]

Plasticizers are generally thought to work by interlocking between chainspolymers, move them away (increase the “empty volume”),[3][4]or inflate them and thus considerably reduceglass transitiontemperature for plastic and make it softer; however, it was later shown that the free mass explanation could not explain all the effects of plasticization.[5]The classic picture of polymer chain mobility is more complex in the presence of plasticizers than that plotted byFoxfor single polymer chains. The plasticizer molecules control chain mobility, and the polymer chain shows no increase in free volume around the polymer ends; in the case of plasticizers/water forming hydrogen bonds with hydrophilic polymer moieties, the bound free volume can be reduced.[6]

For plastics like PVC, the more plasticizers added, the lower their cold bending temperature will be. Plastic items contain plasticizers which can improve flexibility and durability. Plasticizers can be easily exposed due to resin migration and abrasion because they are not bound to the polymer matrix. The “new car smell”often attributed to plasticizers or their degradation products.[7]However, many odorization studies have not found phthalates in appreciable amounts, possibly due to their extremely low volatility and vapor pressure.[8]

The effect of plasticizers onmoduledepends on both temperature and plasticizer concentration. Below a certain concentration, called cross concentration, plasticizers can increase the modulus of a material. However, the glass transition temperature of the material will decrease at all concentrations. In addition to the cross-exchange concentration, there is also a cross-exchange temperature. Below the junction temperature, the plasticizer will also increase the modulus.


Over the past 60 years, more than 30,000 different substances have been evaluated for their suitability as polymer plasticizers. Of these, only a small number – around 50 – are in commercial use today.[9]

EsterPlasticizers are selected based on an evaluation of cost performance. The rubber compound manufacturer should evaluate ester-based plasticizers for compatibility, processability, permanence, and other performance characteristics. Various ester chemicals are produced includingsebacades,adipates,terephthalates,dibenzoate,buttocks,phthalates,azelates, and other special blends. This extensive product line provides a range of performance benefits needed by manyelastomerapplications such as pipes and hoses, flooring, wall coverings, seals and gaskets, belts, wires and cables and printing rollers.

Low to high polarity esters are useful in a wide range of elastomers includingnitrile,polychloroprene,EPDM,chlorinated polyethylene, andepichlorohydrin. Plasticizer-elastomer interactions are influenced by many factors such asdissolution parameter,molecular weight, and the chemical structure. Compatibility and performance properties are important factors in developing a rubber formulation for a particular application.[Ten]

The plasticizers used in PVC and other plastics are generally based onesterof polycarboxylic acids with linear or branched fatty alcohols of medium chain length. These compounds were selected based on many important criteria, including low toxicity, compatibility with host materials, nonvolatile properties, and low cost. Phthalate esters of straight-chain and branched-chain alkyl alcohols meet these specifications and are common plasticizers. Orthophthalate esters have traditionally been the most dominant plasticizer, but regulatory concerns have led to a shift from classified to unclassified substances, including high molecular weight orthophthalate and other plasticizers, particularly in Europe .


Anti-plasticizers are polymer additives that have the opposite effect of plasticizers. They increase the modulus while decreasing the glass transition temperature.

Bis(2-ethylhexyl) phthalate

Safety and toxicity[Editor]

Considerable concern has been expressed about the safety of some polymeric plasticizers, particularly because some low molecular weight orthophthalates have been classified as potentially potent.endocrine disruptorwith some developmental toxicity reported.[11]

Popular polymer plasticizer[Editor]

Ortho Phthalates[Editor]

  • Phthalate
  • Platform based plasticizers are used in situations where good water and oil resistance is required. Some common phthalate plasticizers are:
  • Low molecular weight orthophthalate
  • Diisobutyl phthalate (DIBP)
    Di-n-butyl phthalate (DBP), used in cellulosic resins, food packaging, adhesives, perfumes and cosmetics – about a third of nail polishes, varnishes, enamels and thickeners contain it, along with some shampoos, sun creams, emollients and insect repellents.
    Butyl benzyl phthalate (BBzP) is found in vinyl tiles, traffic cones, food conveyors, artificial leather and plastic foam.
    Bis(2-ethylhexyl) phthalate (DEHP), also known as dioctyl phthalate (DOP), was once used in flooring, medical devices, countless consumer products and high explosives, for example as Semtex. DEHP has been the most popular plasticizer for decades and still holds that title globally, even though it has been largely replaced by phthalates and higher molecular weight substitutes in the United States and Europe.
  • High molecular weight orthophthalates
  • Diisononyl phthalate (DINP), used in flooring, is found in garden hoses, shoes, toys and building materials.
    Bis(2-propylheptyl) phthalate (DPHP), used in cables, wires, and roofing materials
    Diisodecyl phthalate (DIDP), used to insulate wires and cables, car underbody liners, shoes, carpets, swimming pool liners
    Diisoundecyl phthalate (DIUP) is used to insulate wires and cables, car underbody liners, shoes, carpets, pool liners. High temperature and good outdoor weather performance
    Ditridecyl phthalate (DTDP) is the highest molecular weight phthalate plasticizer, providing superior performance at elevated temperatures. It is the preferred plasticizer for automotive wire and cable applications.


  • Trimellitates
  • used in automotive interiors and other applications where high temperature resistance is required. They have extremely low volatility.
  • Trimming tri-(2-ethylhexyl) (TEHTM) (TOTM)
    Tri-(isononyl) trimellitate (TINTM)
    Trimming tri-(isodecyl) (TIDTM)
    Tri-(isotridecyl) Trimming (TITDTM)

Adipates, sebacates[Editor]

  • adipate
  • base plasticizer used for low temperature or heat resistance
  • ultraviolet ray
  • light. An example is:
  • Bis(2-ethylhexyl) adipate (DEHA)
  • Sebacate
  • – plasticizer based on excellent compatibility with a wide range of plastics and neoprene materials (especially nitrile and neoprene rubber), excellent low temperature properties and good oil resistance. Some examples:
  • Dibutyl Sebacate (DBS)
    Di-(2-Ethylhexyl) Sebacate, Di-Octyl Sebacate (DOS)


Organophosphatesinclude the following:

  • Tricresyl (methylphenyl) phosphate (TCP)
  • 2-Ethylhexyldiphenyl phosphate
  • Tri-2-ethylhexyl phosphate


  • Terephthalates such as
  • Bis (2 ethyl hexylterephthalate (DEHT) or dioctyl terephthalate (DOTP) (Eastman Chemical Company brand: Eastman 168).
    Dibutyl Terephthalate (DBT) (Eastman Chemical Brand: Eastman Effusion)
  • 1,2-Cyclohexane dicarboxylic acid diisononyl ester
  • (BASF brand: Hexamoll DINCH)
  • Alkylsulfonic acid phenyl ester (ASE). Lanxess Chemical Brand: Mesamoll)
  • Triethylene glycol di-2ethylhexanoate (Eastman Chemical Brand: Eastman TEG-EH)

Biobased plasticizers have been studied, such asglycerol triacetate(triacetin) and triacetyl citrate. However, they are not widely used.

  • To note:
  • bisphenol A
  • , or BPA, is not a plasticizer, despite what the media say. BPA is a monomer and sometimes another additive to plastics, but it is not a plasticizer by any scientific definition.

Plasticizers for inorganic materials[Editor]


In concrete technology, plasticizers andsuperplasticizeralso known as premium water reducer. When addedconcretemixed together they give a number of properties, including enhancementsWork capacityand strength. The strength of concrete is inversely proportional to the amount of water added, i.e. the water-cement ratio (w/c). To produce stronger concrete, less water is added (without “starving”), making the concrete mix less workable and difficult to mix, requiring the use of plasticizers, water reducers, superplasticizers, liquids or dispersants.[twelfth]

Plasticizers are also commonly used whenpozzolanic ashadded to concrete to improve its strength. This method of proportional mixing is especially popular when producing high strength concrete and fiber-reinforced concrete.

Usually the addition of 1-2% plasticizer per unit weight of cement is sufficient. Adding too much plasticizer will cause too muchconcrete separationand not recommended. Depending on the specific chemical used, excessive use of plasticizers may result in a retarding effect.

Plasticizers are usually made fromlignosulphonates, a by-product ofpaper industry. Superplasticizers are usually made fromsulphonation naphthalenecondensation or sulfonationmelamineformaldehyde, although new products based on polycarboxylic ethers are now available. Traditional plasticizer based on lignosulfonate,naphthaleneandmelamineThe sulfonate-based superplasticizer disperses the agglomerated cement particles by an electrostatic repulsion mechanism (seeGlue). In conventional plasticizers, the active ingredients areinterestingon the cement particles, giving them a negative charge, resulting in repulsion between the particles.Lignin,naphthalene, andmelaminesulfonate superplasticizers are organic polymers. The long molecules wrap around the cement particles, giving them a high negative charge so that they repel each other.

Ether polycarboxylate Superplasticizer(PCE) or simplypolycarboxylate(PC), which behaves differently from sulfonate-based superplasticizers, induces cement dispersion by stabilizing the steel. This dispersion is more powerful and improves the maintainability of the cementitious mixture.[13]


Plasticizers can be addedwall panel mortarmixture to improve workability. To reduce the energy consumption for drying the plasterboards, less water is added, which makes the gypsum mixture very difficult and difficult to mix, requiring the use of plasticizers, water reducers or dispersants. Some studies have also shown that too much lignosulfonate dispersant can cause a set retarding effect. The data showed that the formation of amorphous crystals reduced the mechanical needle-crystal interaction in the nucleus, preventing the nucleus from strengthening. Sugars, chelators in lignosulphonates such asaldonic acidand the extracted compounds mainly caused growth retardation. These low range water reducing dispersants are generally produced fromlignosulphonates, a by-product ofpaper industry.

High quality superplasticizers (dispersants) are usually produced fromsulphonation naphthalenecondensate, although polycarboxylic ethers represent more modern alternatives. These two premium water reducers are used in 1/2 to 1/3 of all lignosulfonates.[14]

Traditional lignosulfonate andnaphthaleneThe sulfonate plasticizer disperses the agglomerated gypsum particles by an electrostatic repulsion mechanism (seeGlue). In conventional plasticizers, the active ingredients areinterestingon the gypsum particles, giving them a negative charge, resulting in repulsion between the particles. Lignin and naphthalene sulfonate plasticizers are organic polymers. The long molecules wrap around the gypsum particles, giving them a high negative charge so that they repel each other.[15]

Energy materials[Editor]

Matter is full of energy fireworks products, especially snakesrocket launcherandsmokeless powderfor firearms, plasticizers are often used to improve the physical properties of the propellant binder or overall propellant, to provide auxiliary fuel, and ideally to improve specific energy yield (for example:specific impulse, fuel efficiency per gram of propellant, or similar numbers) of the propellant. An energetic plasticizer improves the physical properties of an energetic material while increasing its specific energy yield. Energetic plasticizers are often preferred over non-energetic plasticizers, especially for solidsrocket launcher. The energetic plasticizer reduces the required mass of the propellant, allowing the rocket vehicle to carry more payload or reach higher speeds than would otherwise be the case. However, safety or cost considerations may necessitate the use of non-energetic plasticizers, even in rocket launchers. Solidsrocket launcherused to supply fuel toShuttle bus solid boostersTo hireHTPB, Asynthetic rubber, as a non-energetic secondary fuel.

Plasticizers for energetic materials[Editor]

Here is someenergy plasticUsed inrocket launcherandsmokeless powder:

  • Nitroglycerine
  • (NG, aka “nitro”, glyceryl trinitrate)
  • Butanetriol trinitrate
  • (BTTN)
  • Dinitrotoluene
  • (DNT)
  • Trimethylolethane trinitrate
  • (TMETN, aka Metriol Trinitrate, METN)
  • Diethylene glycol dinitrate
  • (DEGDN, less commonly DEGN)
  • Triethylene glycol dinitrate
  • (TEGDN, less common than TEGN)
  • Bis(2,2-dinitropropyl) official
  • (BDNPF)
  • Bis(2,2-dinitropropyl)acetane
  • (BDNPA)
  • 2,2,2-trinitroethyl 2-nitroxyethyl ether
  • (TNEN)

Becausesecondary alcoholThe NG and NR groups have relatively low thermal stability. TMETN, DEGDN, BDNPF and BDNPA have relatively low energies. NG and DEGN havesteam pressure.[16]


  1. ^
  2. David F. Cadogan and Christopher J. Howick “Plastics” in Ullmann’s Encyclopedia of Industrial Chemistry 2000, Wiley-VCH, Weinheim. doi:10.1002/14356007.a20_439
  3. ^
  4. Plasticizers Market Research, 3rd ed., Ceresana, November 2013
  5. ^
  6. (1) Maeda, Y. Paul, D.R.J. Polym. Science. Part B Polymer. Physical. 1987, 25, 957–980.
  7. ^
  8. (1) Maeda, Y. Paul, D.R.J. Polym. Science. Part B Polymer. Physical. 1987, 25, 1005-1016.
  9. ^
  10. (1) Casalini, R.; Ngai, K.L.; Robertson, C.G.; Roland, C.M.J. Polym. Science. Part B Polymer. Physical. 2000, 38, 1841–1847.
  11. ^
  12. Capponi, S.; Alvarez, F.; Racko, D. (2020), “Free mass in water-polymer PVME solution”, Macromolecules, XXX(XXX):XXX–XXX, Bibcode:2020MaMol..53.4770C, doi:10.1021/acs.macromol.0c00472, hdl : 10261/218380, S2CID 219911779
  13. ^
  14. Geiss, O.; Tirendi, S.; Barrero-Moreno, J.; Kotzias, D., “Survey of volatile organic compounds and phthalates in the cabin air of used passenger cars”, Environment International 2009, 35, 1188-1195. doi:10.1016/j.envint.2009.07.016
  15. ^
  16. Chemistry and Engineering News, 2002, 80 (20), 45;
  17. ^
  18. Malveda, Michael P (July 2015). “Report of the Handbook of Chemical Economics of Plasticizers”. {{cite journal}}: Cite journal required | log = (help)
  19. ^
  20. [1] Archived March 27, 2009, at the Wayback Machine
  21. ^
  22. Halden, Rolf U. (2010). “Plastics and health risks”. Annual public health report. 31: 179–194. doi:10.1146/annurev.publhealth.018009.103714 PMID 20070188.
  23. ^
  24. Combination of cement additives. “CAA”. Original archived March 16, 2008. Accessed April 2, 2008.
  25. ^
  26. OLD
  27. ^
  28. [2] Archived July 24, 2011, at the Wayback Machine
  29. ^
  30. Kirby, Glen H.; Jennifer A. Lewis (2002). “Evolution of rheological properties in concentrated cement-polyelectrolyte suspensions”. Journal of the American Ceramics Association. 85 (12): 2989–2994. doi:10.1111/j.1151-2916.2002.tb00568.x.
  31. ^
  32. 2,2,2-trinitroethyl 2-nitroxyethyl ether and method of preparation – U.S. Patent 4745208

external link[Editor]

  • Plastics Information Center
  • Change glasses
  • DIDP
  • , *
  • DINP
  • ,
  • DBP
  • ,
  • BBP
  • , *
  • DEHP
  • , Risk Assessment Report of
  • European Chemicals Agency
  • (ECB).

Popular questions about what does a plasticizer do

what does a plasticizer do?

Plasticizers are used to convert PVC, a rigid plastic, into a soft, flexible, and elastic material. A plasticizer that is compatible with PVC and exhibits low volatility, good permanence, and high efficiency is referred to as a primary plasticizer.

What is the purpose of plasticizer?

Starting with the basics, a plasticizer is a low-volatility liquid or solid substance that’s added to a raw polymer like a type of plastic or rubber to improve its flexibility, make it easier to shape and mold, and reduce friction on its surface.

What is the role of plasticizer in concrete?

Superplasticizers, also known as plasticizers or high-range water reducers (HRWR), reduce water content by 12 to 30 percent and can be added to concrete with a low-to-normal slump and water-cement ratio to make high-slump flowing concrete.

When should I use plasticizer?

Plasticizer is used to increase workability in concrete. Due to plasticizer, we can reduce the water-cement ratio up to a certain limit. Basically, water-cement ratio is used for workability and hydration of cement.

Why are esters used as plasticizers?

A plasticizer, among other contributions, will reduce the melt viscosity, lower the temperature of a second order glass transition (Tg) or lower the elastic modulus of a polymer. This paper discusses ester plasticizers, one of the more common and important plasticizer classes.

Does plasticiser weaken mortar?

Excessive use of plasticisers can have an adverse effect on the mortar. Lime added to mortars is well known for giving them a soft, putty-like consistency which can make them easier to work and retard their setting.

How much does superplasticizer cost?

concrete. Very low water to cement ratios can be obtained with as much as 25-30% total water reduction. Typical dosage rates approximately 40% less than of standard melamine and naphthalene based superplasticizers, while maintaining the same percent water reduction.

OPTIMUM 380 Premium Superplasticizer.
Our Price: $54.00
Your Total: $54.00

How do you increase slump in concrete?

Adding just 1 gallon of water per cubic yard can: • Increase slump 1 inch • Decrease compressive strength 150 to 200 psi • Waste about 1⁄4 bag of cement • Increase shrinkage by 10% But water isn’t the only way to adjust slump. Consider adding a water reducer or superplasticizer at the site to increase slump.

Does plasticizer make concrete stronger?

Superplasticizers transform stiff, low-slump concrete into flowing, pourable, easily placed concrete. They can improve workability, speed finishing, increase strength, conserve cement and help reduce shrinkage and thermal cracking.

How do you control slump in concrete?

If the slump is low, introducing water or superplasticizer to the concrete in the mixer can solve the problem. However, if the slump value is high, adding cement to fresh concrete in the transit mixer, extra revolutions of concrete in the mixer, or introducing silica fume can tackle the problem.

What is plasticizer in food?

Phthalates and replacement plasticizers are chemicals used to make plastics soft and can migrate out of plastics into the food, which is ingested. Some sources of plastics include food handling gloves, industrial tubing, food conveyor belts and the outer packaging used to wrap fast food meals available in restaurants.

Are plasticizers harmful?

Most of these products contain fragrance and thus phthalates. These plasticizers are not known to damage the skin, but once absorbed can disrupt the natural hormones, inhibiting testosterone and enhancing estrogen.

Are plasticizers biodegradable?

Biodegradable plasticizers such as soybean oil (SO), epoxidized soybean oil (ESO), dibutyl phthalate (DBP) and triethyl citrate (TEC) were added to poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) films, enhancing their thermal and mechanical properties.

Do you need plasticizer for mortar?

Yes, Plasticisers do weaken the mortar. The reason for that is that the strength of the mortar is actually the strength of the cement. However, a plasticiser is used in CONCRETE and hardly ever in mortar, as the coarse aggregates need to slide over each other to form a dense packing in a mix of the three.

Why do they put lime in mortar?

Lime is added to make the mortar creamier or more workable and durable. It also helps to minimise cracking as the mix dries out. Sand is the fine aggregate component which is the basis of the mortar and only recognised brickie’s sand should be used.

Video tutorials about what does a plasticizer do

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Citrates, benzoates, ortophthalates, cyclohexanoates, trimellitates, terephthalates, sebacates…sounds complicated? Watch the video to clear things up!

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Plasticizers added to a polymer increase the flexibility by weakening the intermolecular forces between the polymer chains.

Applications and skills:

Description of the use of plasticizers in polyvinyl chloride.


Consider phthalate esters as examples of plasticizers.

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What are phthalates? Where are they found? Do meat and dairy have phthalates?

Types of phthalates – DiNP, DiDP, DEHP, DBP

Phthalates: Cancer? Reproductive harm? Birth defects? Asthma? Allergies?


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