Plasticizers: Types, Uses, Classification, Selection & Regulation
Most common plasticiser chemistries include citrates, benzoates, ortho-phthalates, terephthalates, adipates, azelates, sebacates, and trimellitates. Plasticizers are the most common additives used in the plastics industry. But, selecting the right plasticizer for an application has always been a daunting task.
Plasticizers - Chemical Economics Handbook (CEH) | S&P Global
Plasticizers and plasticization 17 Phthalates 19 Terephthalates 19 Aliphatics 20 Epoxidized vegetable oils 20 Trimellitates 20 Benzoates 20 Phosphate plasticizers 20 Polymeric plasticizers 21 Manufacturing processes 22 Polycarboxylic acid esters 22 Terephthalates 22 Epoxidized vegetable oils 22 Phosphate plasticizers 22 Polymeric plasticizers 22
Use of Water Reducers, Retarders, and Superplasticizer
There are four types of superplasticizers: sulfonated melamine, sulfonated naphthalene, modified lignosulfonates and a combination of high dosages of water reducing and accelerating admixtures. Commonly used are melamine based and naphthalene based superplasticizers.
Super Plasticizers: Classification and Uses | Concrete Technology
Super plasticizers are used for producing flowing concrete to be used in inaccessible locations, floors or where very quick placing is required. A self levelling and self-compacting concrete is called flowing concrete. Super plasticizers are also used for the production of high strength and high performance concrete.
Classification of plasticizers - Oxoplast
Classification of plasticizers. Plasticizers (softeners) are softening substances which reduce the intensity of intermolecular interaction and increase the mobility of polymer chains. As a result lower glass transition temperature, hardness, strength and increased flexibility of polymer is achieved . Plasticizers also act as an internal lubricant.
- What is a superplasticizer used for?
- Superplasticizers (SPs), also known as high range water reducers, are additives used for making high strength concrete or to place self-compacting concrete. Plasticizers are chemical compounds enabling the production of concrete with approximately 15% less water content. Superplasticizers allow reduction in water content by 30% or more.
- What is the difference between a plasticizer and a superplasticizer?
- Plasticizers are chemical compounds enabling the production of concrete with approximately 15% less water content. Superplasticizers allow reduction in water content by 30% or more. These additives are employed at the level of a few weight percent. Plasticizers and superplasticizers also retard the setting and hardening of concrete.
- What is a superplasticizer admixture?
- Superplasticizers belong to a class of water reducers chemically different from the normal water reducers and capable of reducing water contents by about 30%. The admixtures belonging to this class are variously known as superplasticizers,” “superfluidizers,” “superfluidifiers,” “super water reducers,” or “high range water reducers.”
- When were superplasticizers used?
- In North America they were used from 1974.1’1 The advantages derived by the use of superplasticizers include pro-duction of concrete having high workability for easy placement, and pro- duction of high strength concrete with normal workability but with a lower water content.
- How many types of super-plasticizers are there?
- The super-plasticizers are divided into four types: SPN and SPR (non-flowing types) and SPN and SPR ( flowing types). The minimum water requirement for the non-flowing type is 8 8 % of the control, whereas there is no requirement for the flowing types. There is also a requirement for the slump retention.
- What is polycarboxylate superplasticizer (PCE)?
- Polycarboxylate superplasticizer (PCE), the third generation of high-performance superplasticizer, follows the development of ordinary plasticizers and superplasticizers. It significantly reduces water content while enhancing concrete's workability, strength, and durability.
