What material is fr4 epoxy glass fiber board

What material is fr4 epoxy glass fiber board? What material is epoxy resin board? It is better to use the following materials:

A. It is epoxy resin, which refers to the general name of polymers containing epoxy groups. It is mainly suitable for media with less corrosive properties. It has outstanding alkali resistance and can resist the corrosion of general acids (except hydrofluoric acid). The demand for epoxy resins in the corrosion market has been greatly reduced. The main reason is that the unsaturated polyester resins in corrosion-resistant resins have developed rapidly and there are many varieties. The domestic market has a late start of unsaturated polyester resins, so epoxy resins It is still one of the main resin varieties in the field of anti-corrosion. The main characteristics of epoxy resin are high bonding strength, low shrinkage, high product brittleness, and high price. The use temperature of resin cured at room temperature does not exceed 80°C;

B. It is the curing agent of fr4 epoxy glass fiber board) epoxy resin. There are several varieties of amines, acid anhydrides, resin compounds and so on. Among them, amine compounds are the most commonly used. They can be divided into fatty amines, aromatic amines and modified amines. Several types of amines, such as ethylenediamine, m-phenylenediamine, xylylenediamine, polyamide, diethylenetriamine and other compounds, are more toxic and odorous, so they are gradually being used by non-toxic and low-toxic new curing agents ( Such as: T31, 590, C20, etc.) instead, this kind of curing agent can be cured even under water on the wet base layer, so people are paying more and more attention and praise;

C. It is fr4 epoxy glass fiberboard diluent. The epoxy resin is usually diluted with inactive diluents such as ethanol, acetone, benzene, toluene, xylene, etc. The two inactive diluents can be mixed and used, sometimes in order to reduce curing Reactive diluents such as propylene oxide butyl ether, propylene oxide phenyl ether, polyglycidyl ether, etc. are also used for the shrinkage of the finished product, to reduce pores and cracks;

D. It is a plasticizer and toughening agent for fr4 epoxy glass fiberboard. The simple epoxy resin is more brittle after curing, and has poor impact toughness, bending strength and heat resistance. Plasticizers and tougheners are commonly used to make Resin increases plasticity, improves toughness, increases bending strength and impact toughness;

E. It is a filler, powder, fine aggregate, coarse aggregate, and glass flakes are collectively referred to as fillers. Adding appropriate fillers can reduce the cost of the product and improve its performance. The amount of filler in the glue is generally resin The amount of 20-40% (weight), the amount can be more when preparing putty, generally can be 2 to 4 times the amount of resin, commonly used powders are quartz powder, porcelain powder, in addition to graphite powder, brilliant green Rock powder, talcum powder, mica powder, etc.