Plasticizers - ASTM International
STP37149S Plasticizers Source Several thousand high boiling solvents that impart permanent flexibility to otherwise rigid plastics have been created in recent decades to supplement to relative few available in the twenties. The appearance of new types of plastics and their adaptation to new uses requiring flexibility has prompted this search.
Plasticizers - ASTM International
Plasticizers are liquids of molecular weight greater than that of solvents—to limit volatility—but are not solids, such as alloying polymers, etc. It should be noted that cross-linked resinous coatings significantly reduce plasticizer loss due to diffusibility and volatility.
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Propagation Tear Resistance of Plastic Film ASTM D1922 Puncture Test FTMS 101C - Method 2065 QRS: QUV Accelerated Weathering - ASTM D4329, D4587, ISO 4892 Refractive Index ASTM D542 Relative Viscosity of Polyamides (Brookfield Viscosity ) ASTM D789, D4878 Rockwell Hardness ASTM D785, ISO 2039 Sample Preparation - Machining
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ASTM stands for American Society for Testing and Materials and was first founded in the year 1898. Initially, they were responsible for addressing and preventing the recurring breakdown in the railway industry by reinforcing standards to guarantee premium quality rail products.
- What are ASTM plastics standards?
- ASTM's plastics standards are instrumental in specifying, testing, and assessing the physical, mechanical, and chemical properties of a wide variety of materials and products that are made of plastic and its polymeric derivatives.
- How many high boiling fluids are a plasticizer?
- Several thousand high boiling fluids are potential plasticizers for coatings applications. The choice of plasticizer is dependent on compatibility with the resin in use, cost, and other desired attributes. Plasticizers may be classified by both chemical structure and performance characteristics, as shown in Table 1 .
- What is a plasticizer used for?
- Plasticizers are primarily employed in heavy gage coatings and/or when improved toughness is required for industrial, automotive, and appliance applications. Plasticizers function by reducing the glass transition temperature of the resin to a point below its application temperature.
- Which plasticizers can be volatilized?
- Due to the need to volatilize the plasticizer, only monomeric plasticizers having definitive boiling points and a molecular weight less than 1000 Daltons, such as dioctyl phthalate, are applicable to this guide. 1.2 The values in SI units are to be regarded as standard.
- What impurities can be found in monomeric plasticizers?
- 5.3 Impurities potentially found in monomeric plasticizers include alcohols, dibasic acids, and monoesters. 1.1 This gas chromatographic guide covers a procedure for extending the range of purity determination of monomeric plasticizers beyond that now determined by other methods.
- Why do we use high boiling fluids as plasticizers?
- Access your content now. PAINT AND COATING FORMULATIONS OFTEN incorporate high boiling fluids as plasticizers where rigid or brittle resins fail to meet toughness and flexibility requirements. The primary function of the plasticizer is to impart flexibility to the resin, thus minimizing film cracking.
