Dibenzoate Plasticizer Technology for Sealants - ASTM International
Dibenzoate Plasticizer Technology for Sealants Source Dibenzoate plasticizers are widely utilized in latex caulks because they are compatible with the polymers used in that application. Dibenzoates are also known to be used in the polymer side of two-part insulating glass polysulfide sealants.
Plasticizers - ASTM International
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.
ASTM International - ASTM D3465-21 - Standard Guide for Purity
ASTM D3465-00 August 10, 2000 Standard Test Method for Purity of Monomeric Plasticizers by Gas Chromatography 1.1 This gas chromatographic test method covers a procedure for extending the range of purity determination of monomeric plasticizers beyond that now determined by other methods. Due to the need to...
Standard Test Methods for Sampling and Testing
ASTM D1045-19 Standard Test Methods for Sampling and Testing Plasticizers Used in Plastics Significance and Use 4.1 These test methods shall be used in establishing and confirming quality control standards for liquid plasticizers used in the compounding of plastics. Scope
New standard test method to identify plasticizers
On June 6, 2013 the developer of international voluntary consensus standards ASTM International released a new standard test to determine low level migration of phthalates. The method aims to ensure compliance with the U.S. Consumer Product Safety Improvement Act (CPIA) of 2008, Section 108, which prohibits certain products, including toys, from containing 6 phthalates. The
- 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.
- Why does plasticizer spew?
- If these compressive stresses cannot be relieved rapidly by internal migration of plasticizer, then plasticizer will spew. The internal migration of plasticizer will continue and when a deficiency of plasticizer occurs at the compressed area spewed plasticizer will be reabsorbed.
- How are plasticizers delivered?
- Methods for the isolation, identification, and quantitative determinations of these plasticizers are also included. Domestic orders are delivered via United Parcel Service (UPS) or United States Postal Service (USPS). Transit times average 3 to 5 business days. Please be aware that UPS will not deliver packages to Post Office Boxes.
- What happens if a plasticizer deficiency occurs?
- The internal migration of plasticizer will continue and when a deficiency of plasticizer occurs at the compressed area spewed plasticizer will be reabsorbed. It is possible for certain plasticizers to spew and be reabsorbed quite rapidly. Less compatible plasticizers are capable of spewing early and continuing to spew throughout the test.
- What are the characteristics of a plasticizer?
- Typical plasticizers are liquid esters of molecular weight between about 200 to 800, with specific gravities between 0.75 and 1.35 at 20/20°C, viscosities between 50 to 450 cSt, vapor pressure of less than 3.0 mm of mercury at 200°C, and flash points greater than 120°C (248°F).
