Fat-solublevitamins are a class of vitamins that are insoluble in water but soluble in fat and non-polar organic solvents (such as benzene, ether, chloroform, etc.), including vita
Sep 30, 2022
After saponification of oil, there are still some substances such as sterols, polymer alcohols, hydrocarbons, pigments and fat-soluble vitamins that are insoluble in water but solu
Shellac is a kind of animal resin that accumulates on the branches due to the secretion of colloid due to the metabolism of shellac insects in India, Malaysia and Yunnan, China.
Copal resin is an amber-colored, hard, transparent substance that is the secretion of the sapwood and inner bark of some trees. Copal resin is derived from many species of tropical
Refractive index is also known as refractive index or refractive index. It is defined as the ratio of the propagation speed of light in a vacuum to the propagation speed in a mediu
Water treatment resin is divided into cation resin and anion resin, cation resin is further subdivided into sodium type and hydrogen type, sodium type resin exchanges calcium and m
Dama resin is also known as Taima glue, Taima resin. Dama resin is a kind of borneol spice plant secretion produced in Southeast Asia. Its appearance is transparent and light yello
Natural resin of recent period refers to a class of natural resins. A substance that hardens from the exudates of existing trees exposed to the air. Pale yellow to reddish brown. U
Sep 29, 2022
Synthetic resin is a kind of artificially synthesized polymer compound, which is a kind of resin that has or exceeds the inherent characteristics of natural resin. ASTM D883-65T de
Solvent resistance refers to the ability of a polymer to resist swelling, dissolution, cracking or deformation caused by a solvent. It is a physical performance index of plastic an
Sep 28, 2022
Thermosetting acrylic resin refers to acrylic monomers (methyl acrylate, ethyl acrylate, n-butyl acrylate, methyl methacrylate, n-butyl methacrylate, etc.) as the basic components,
The smallest unit of the same chemical composition in a polymer is called a repeating unit. It is the combination of atoms that constitutes the polymer chain and determines that th
Sep 27, 2022
