3.1.3 Structural features A, PVC structure Figure 3.5 PVC Structural Diagram Figure 3.5 (a) is molecular formula for polymerization of vinyl chloride monomer in PVC, and (b) is a model of three-dimensional structure of PVC. (c) T...

A plasticizer is an additive to polymeric materials widely used in industrial production, also known as a plasticizer. Any substance added to a polymer material that can increase plasticity of a polymer is called a plasticizer. Th...

Text/Mite Polymer milan only Now international price of crude oil is down to $20/bbl, why is domestic price of gasoline down only a few cents? We know that oil is still a highly demanded commodity on world market, and not only its...

Text/Meite Polymer Zhong Ming 1. What is wave tracing? Wave marks are irregularities in form of ring-shaped, helical or cloud-like waves on surface of plastic parts due to improper flow of molten material in mold cavity, mainly i...

Writer/Wisdom and Love Wang Chen from Fangcai Hospital planned overall battle, just like blockade of Li Lanjuan, strong man who closed city with his broken arm, combined with grid-based investigation of community's people's war, t...

Writer/Wisdom and Love People have come out of Africa, similar to new corona coming out of United States, genome sequencing and evolution of new coronavirus, article was published on Chinese Academy of Science and Technology Artic...

Writer/Wisdom and Love The new corona infection is analogous to sperm fertilization, arginine protein packages semi-baby DNA, just like S spike protein packages RNA; ovum absorbs arginine protein package, ACE2 appears to absorb sp...

Text/Wang Qiang There are thousands of types of polymer materials, some polymer materials are amorphous, some are crystalline, main influencing factor is structure of polymer chain, because a polymer needs its own polymer to cryst...

Text/Wang Qiang 1. Flame retardant Flame retardants are additives used in fire retardant combustible materials that render combustible materials flame-retardant. Flame retardants can be divided into reactive flame retardants and a...

Text/POLYMER In order to meet performance requirements of polypropylene (PP) for various applications, it must be modified based on original polypropylene resin. Property modification methods include chemical modification and phys...