Epoxy material composition
Epoxy resin anticorrosive materials mainly consist of the following materials. One is epoxy resin, which refers to a polymer containing epoxy groups. It is mainly used for mediums with less corrosive properties, and is more resistant to alkalis and also resistant to general acid (except hydrofluoric acid) corrosion. Demand for epoxy resin has been greatly reduced, mainly due to the rapid development of unsaturated polyester resins in corrosion-resisting resins, and many varieties, the domestic market due to the late start of unsaturated polyester resins, so the epoxy resin is still One of the major resin species in the field of corrosion protection. The main characteristics of epoxy resin are high bond strength, low shrinkage, high product brittleness, and high price. The use temperature of room-temperature curing resin does not exceed 80°C; the second is epoxy resin curing agent, including amines and anhydrides. , resin compounds and other major varieties, of which the most commonly used amine compounds, it can be divided into aliphatic amines, aromatic amines and modified amines and other types, due to ethylene diamine, m-phenylene diamine, xylylene diamine, poly Amides, diethylenetriamines, and other compounds have relatively high toxicity and odor, and are gradually replaced by new non-toxic, low-toxicity curing agents (eg, T31.590, C20, etc.). These types of curing agents also have Can be cured, so increasingly attract people's attention and praise; Third, thinner, epoxy resin is usually diluted with non-reactive diluents such as: ethanol, acetone, benzene, toluene, xylene, etc., two kinds of non-reactive diluent can be mixed In use, reactive diluents such as propylene oxide butyl ether, propylene oxide phenyl ether, polyglycidyl ether, etc. are sometimes used in order to reduce the shrinkage of the cured product, reduce porosity and cracks; Toughener The simple epoxy resin is relatively brittle after being cured, its impact toughness, bending strength and heat resistance are poor. Commonly used plasticizers and toughening agents are used to increase the plasticity of the resin, improve the toughness, and increase the flexural strength and impact toughness; Fifth, fillers, powders, fine aggregates, coarse aggregates, and glass flakes are collectively referred to as fillers. The addition of appropriate fillers can reduce the cost of the product and improve its performance. The amount of filler used in glue is generally the amount of resin used. 20 to 40% (by weight), when adding putty can be added more, generally 2 to 4 times the amount of resin, commonly used powder is quartz powder, porcelain powder, in addition to graphite powder, diabase Powder, talcum powder, mica powder and so on. Want to learn more about buttons: accessible For more details, please pay attention to WeChat public number: Work clothes jeans are the combination of work clothes pants and jeans, which add soft and elegant features and bring fashion and handsome to the extreme. Pockets are no longer practical, but play the role of decoration. Zipper is another essential element of workwear jeans. Now many zipper designs are very creative. We can see its existence where there should be a zipper and where there should not be a zipper, which makes the workwear pants appear stronger and more stylish. white cargo pants,womens high rise cargo pants,cargo jeans for women Dongguan Arrow Dragon Garment Co.Ltd. , https://www.jljeansfactory.com