Plasticizer is a polymer material additive widely used in industrial production. Any substance that is added to a polymer material to increase the plasticity of the polymer is called a plasticizer. The use of plasticizers can improve the performance of polymer materials, reduce production costs, and increase production efficiency. It is an important chemical product additive. As an auxiliary, it is widely used in plastic products, concrete, plaster, cement, plaster, cosmetics, cleaning agents and other materials, especially in polyvinyl chloride plastic products, in order to increase the plasticity of plastics. To improve the strength of plastics, it is necessary to add phthalates, whose content can sometimes reach 50% of the product. The function of plasticizers is mainly to weaken the secondary bonds between resin molecules, increase the mobility of resin molecular bonds, reduce the crystallinity of resin molecules, increase the plasticity of resin molecules, and make them more flexible, easy to process, and can be used legally. For industrial use, it is widely used in food packaging, cosmetics, medical equipment, and environmental water bodies. For example, plastic wrap, food packaging, toys, etc.
Adjuvants are defined in medicine as excipients and additives used in the production of medicines and formulating prescriptions, that is, the general term for all materials except the main active ingredients of medicines, and are important components of Pharmaceutical Preparations. In industrial production, auxiliary chemicals are added to improve the production process, increase product quality and output, or to give products a particular application performance. Also known as additives. However, as an important component of the product matrix, large-dose supplements that have a significant impact on product form, structure, and performance are generally not included in the category of additives.
Plasticizers And Aids,Material For Cold-Resistant Plasticizer,Plasticizer And Aids Cosmetic Ingredients,Environmental Friendly Plasticizer Dotp Sunrise Group Corporation , https://www.sunriseindust.com
Pressure Seal Gate Valve
Main Features:
The pressure seal valves are designed for service of high temperature and high pressure and are widely used in fossil fuel power plant. Compared with bolted bonnet joint valves,
it provides absolute reliable sealing of the bonnet joint, so that the pressure seal valves are more compact and rigid as well as maintenance cost-effective at high temperature and high pressure service.
This kind of gate valve is not only characterized as simple structure and reliable usage, but also able to create slight flexible deformation to compensate the deviation of the sealing face angle generated during processing, thus improving the process performance. In addition, at seat and gate disc seal surface are over-lay with iron-base alloy or Co-base alloy or carbide alloy for long duration.
Main Parameter Specification
Design and Manufacture:Cast Steel Gate Valve to API 600(ISO 10434),API 6D;Cast Stainless Steel Gate Valve to API 603,API 600
Inspection and Test:API598,API600 or API 6D
End Flange Dimension:ASME B16.5(for NPS≤24,ASME B 16.47 series B,API 605,ASME B16.47 A Series,MSS SP-44(for NPS>24)
BW end Dimension:ASME B16.25
Face to Face and End to End:ASME B16.10
Pressure-temperature ratings:ASME B16.34
Product Range
Body material: carbon steel, stainless steel, alloy steel
Nominal diameter:2"~36"(DN50~DN900)
End Connection: RF,RTJ, BW
Pressure range: Class150~2500(PN16~PN420)
Working temperature:-29ºC~+560ºC
Operation: Hand wheel,Gear,Electric Actuator,etc.
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Specifications
Applicable Standards
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Design
ASME B16.34, API6DÂ
Fire safe
APIÂ 607Â
Anti static
API 608, API6DÂ
Face to face
ASME B16.10, API6D
Welding ends
ASMEÂ B16.25
Inspection and test
API 598, API 6D Â