| The effect of styrene content
2.1 on the mechanical properties of the cured product
The properties of cured resin not only depends on the molecular chain structure, but also with the participation of the crosslinking reaction of the monomer structure and related quantities. For casting resin, bending strength with styrene content increases, and the glass fiber reinforced laminate, bending strength increased with the content of styrene. Tensile strength with the styrene content increases, until a maximum value, and then began to decline, poly bag supplier that is to say, adding proper amount of styrene can make its tensile strength reached the maximum value. General molded plastic resin, styrene content in 30% 40% is best. Styrene content in allowed range, appropriately increase the amount of styrene on the mechanical performance is favorable. This is because the crosslink completely cured. It is beneficial to improve the mechanical properties, reduced shrinkage, reduce the resin viscosity, easy to use.
2.2 effect on electric properties
Styrene content on the electrical properties of the cured product of impact is very significant. Styrene content is too high or too low on the electrical performance is bad. Styrene content in 30% - 50% between often can obtain high electric property.
2.3 of the absorbent effect
Unsaturated polyester resin absorbent depends mainly on the polyester molecular chain structure, the acid value, hydroxyl value of resin and styrene content, but also have a certain relationship.make plastic bag In general, a cured product absorbent is usually with styrene content increased with the decrease of the.
2.4 of curing product chemical resistance effect
Influence of curing product of chemical resistance is a factor in the molecular chain structure, such as benzene two formic acid polyester is more resistant to chemical corrosion. The effect of curing product of chemical resistance is another factor is the type and content of the diluent. Using styrene as crosslinking agent of polyester, along with the increase of content of styrene, improves the crosslinking density so that it can more effectively prevent the chemical solvent attack"".
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