Polyamide (Polyamide)

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Polyamide

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Polyamide resin

63428-84-2

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Product Description

polyamide resin is a polycondensation polymer compound with a CONH structure in the molecule. It is usually obtained by polycondensation of dibasic acid and diamine. The most prominent advantage of polyamide resins is that the softening point range is particularly narrow, and unlike other thermoplastic resins, there is a gradual curing or softening process, which causes rapid curing when the temperature is slightly lower than the melting point. Polyamide resin has good drug resistance and can resist acid and alkali, vegetable oil, mineral oil, etc. Because it has amino, carbonyl, amide and other polar groups in its molecule, it has good bonding properties for wood, pottery, paper, cloth, brass, aluminum and phenolic resin, polyester resin, polyethylene and other plastics.

Nature Description

Product Applications

Polyamide resin is a chemical raw material with excellent performance and wide application. It can be divided into two categories according to its properties: non-reactive or neutral polyamides and reactive polyamides. Neutral polyamides are mainly used to produce inks, thermocompatible adhesives and coatings, while reactive polyamides are used epoxy resin curing agent, and used for thermosetting surface coating, adhesive, insert material and can seal and mold casting resin. Neutral dipolyacid polyamide resin polyethylene good adhesion on the substrate, especially suitable for stretch wrap polyethylene surface, metal foil printing on plastic films such as composite laminating film; The ink prepared by neutral polyamide resin has gloss, good adhesion, excellent alcohol dilution, low gelling property, quick drying and low odor. Dipolyacid-based heat-sealing resin is widely used in shoe making, can making, packaging and book binding; It is used for edge seam sealing of canned packaging; It is used for freezing apples, bonding of containers with new structure of oranges and other fruit juice. Heat-sealing polyamide Binder, because of its dry cleaning resistance, strong detergent resistance, Bleacher resistance and high temperature washing conditions between laundry room and family, is convenient to use for strong adhesive bonding of fabrics; it is used for heat shrinkage cable cover due to its necessary adhesion and excellent moisture resistance. Other uses of neutral polyamine resin include preparation of tactile coatings, civil water-based adhesive, fabric antistatic agent, transparent candles and detergents. Reactive polyamide resin is further reacted and used as epoxy resin curing Agent, resulting in extensive crosslinking into thermosetting resin. When used as curing agent, it is random, non-toxic, and can be used frequently. The advantages of curing under temperature and softness and non-embrittlement can make epoxy resin have excellent adhesion, flexibility, toughness, chemical resistance, moisture resistance and surface smoothness. The biggest use of dipolyacid amine resin-epoxy resin is Binder, surface coating, can seal and mold casting resin. The binder has good wetting property, high bonding strength, good plasticity of inner height increase, and can withstand greater impact force than epoxy resin cured with amine. This adhesive can be used as metal side seam adhesive, plastic, automobile body welding agent and joint blocking material, and also as metal-metal adhesive structural adhesive. Epoxy resin cured by dipolyacid-based polyamide has excellent properties such as flexibility, chemical resistance, salt corrosion resistance, impact resistance and high gloss, and is widely used as surface coating.