Plasticizer
In the concrete technology, plasticizers and superplasticizers are also called high range water reducers. When added to concrete mixtures, they confer a number of properties including improved workability and strength. The strength of concrete is inversely proportional to the amount of water added, i.e., the water-cement (w/c) ratio.
Plasticizer - an overview | ScienceDirect Topics
Good plasticization involves interspersing plasticizer molecules between PVC chains, breaking the small amount of native PVC crystallinity, and internally lubricating the polymer blend. While there is no formal chemical bond between plasticizer and polymer, the polar attraction between them makes plasticized PVC more than a simple physical mixture.
Handbook of Plasticizers - 3rd Edition
Plasticizers are vital to the plastics industry, particularly in improving the properties of materials such as PVC. Plasticizers are commonly added to complex mixtures containing a variety of materials, so successful incorporation requires a broad understanding of the mechanisms of plasticizer action, and compatibility with different materials
Plasticizers: Types, Uses, Classification, Selection & Regulation
Plasticizers increase the flow and thermoplasticity of a polymer by decreasing the viscosity of the polymer melt, the glass transition temperature (Tg), the melting temperature (Tm) and the elastic modulus of the finished product without altering the fundamental chemical character of the plasticized material.
Plasticizer - an overview | ScienceDirect Topics
Effect of plasticizer level on Shore A hardness. 1. Dioctyl phthalate; 2. Di-iso-decyl phthalate; 3. Di-isotridecyl phthalate; 4. Dioctyl adipate. Reproduced by permission of Elsevier from ‘PVC Plastics – Properties, Processing and Applications,’ 1990, p. 233. Table 1. Flexible PVC usage in different applications (Western Europe, 1998)
- Which plasticizer possesses a favorable plasticization effect on PVC?
- Among, Yao et al. synthesized an environmental-friendly plasticizer CEP originated from cardanol by click chemistry, the results showed that it possessed favorable plasticization effect and stabilization effect on PVC. Zhu et al. designed and synthesized a new type of VA-based plasticizer (VA4-Cn).
- Which plasticizer is used to plasticize PVA resin with a DP of 2400?
- In this study, two types of frequently used plasticizers, glycerol (GLY) and diethanolamine (DEA), are chosen to plasticize PVA resin with a DP of 2400. Both PVA/plasticizer films possess excellent optical transmittance and mechanical ductility, whereas the films blended with DEA exhibit higher strength than the PVA/GLY films.
- How do Plasticizers improve polymer material flexibility & durability?
- Plasticizers improve polymer material flexibility and durability by lowering glass transition and cold flex temperatures. While many different classes of plasticizers have been synthesized and used...
- What is a plasticizer in chemistry?
- "Plasticizers". In: Encyclopedia of Polymer Science and Technology Table 1. Commonly Used Plasticizers aTo convert Pa to mm Hg, divided by 133.3. bl is linear. modifying the polymer or monomer so that the flexibility of the polymer is in-creased.
- What is plasticization in chemistry?
- The term plasticization refers to the softening and increase in flexibility of a polymer. This change is due to the addition of specific additives, especially plasticizers. A plasticizer is a non-volatile substance incorporated in a plastic or elastomer. It changes the thermal and mechanical properties of the material.
- How can plasticizers be used in industrial applications?
- External plasticization using low molecular weight plasticizers is the most widely applied approach in industrial applications. The glass transition temperatures and the mechanical properties (elastic modulus) of CA systems with different plasticizer contents are reported in Table 2.
