discount 70% in 2018-09-21 to 2018-09-23
price: USD$ 7.00
freight :USD$7.00,(Postal parcel)
Minimum Order Quantity:2
Search Similar or mail to saler or send message to saler
Brief introduction of materials:
Epoxy resin is an organic macromolecule compound containing two or more epoxy groups in the molecule, except for some of them, the relative molecular weight of them is not high enough. (two). The molecular structure of epoxy resin is characterized by the presence of active epoxy groups in the molecular chain, and the epoxy group can be located at the end, intermediate or ring like structure of the molecular chain. Because of the active epoxy groups in the molecular structure, they can be cross-linked with various types of curing agents to form insoluble, non melting polymers with three directional network structure.
1、Various forms:Various resins, curing agents and modifier systems can almost meet the requirements of various applications for the form, ranging from very low viscosity to high melting point solids.
2、Easy curing:The epoxy resin system can be used in almost all kinds of curing agents0～180Curing at temperature range of temperature.
3、Strong adhesion:The existence of polar hydroxyl groups and ether bonds in the molecular chain of epoxy resin makes it highly adhesive to various materials. When epoxy resin is cured, the shrinkage is low and the internal stress is small, which also helps to improve the adhesion strength.
4、Low contractility:The reaction between epoxy resin and curing agent is carried out by direct addition reaction or ring opening polymerization of oxygen in the resin molecule. No water or other volatile by-products are released. Compared with unsaturated polyester resin and phenolic resin, they show low shrinkage in curing process (less than)2%）。
5、Mechanical properties:The cured epoxy resin system has excellent mechanical properties.
6、Electrical properties:The cured epoxy resin system is an excellent insulating material with high dielectric properties, resistance to surface leakage and arc resistance.
7、Chemical stability:Generally, the cured epoxy resin system has excellent alkali resistance, acid resistance and solvent resistance. Like other properties of the cured epoxy system, the chemical stability depends on the selected resins and curing agents. Proper selection of epoxy resin and curing agent can make it have special chemical stability.
8、Dimensional stability:The synthesis of many properties above makes the epoxy resin system outstanding in dimensional stability and durability.
9Mold resistance:The cured epoxy system is resistant to most molds and can be used in harsh tropical conditions.