Epoxy toxic?

Epoxy toxic?

     Non-toxic epoxy resin and epoxy resin adhesive itself, but added in the preparation process and other toxic solvents, thus a lot of epoxy resin so "toxic" that the recent modification of epoxy resin industry is through the water to avoid Add other ways to keep epoxy "drug-free" character. At present, most epoxy coating for solvent-based paints, contain large quantities of volatile organic compounds (VOC), toxic, flammable, and thus harm the environment and the human body.

Epoxy resin generally refers to molecules containing two or more epoxy groups of organic polymers, with the exception, but they are not high relative molecular mass. The molecular structure of epoxy resin is based on the molecular chain of epoxy groups with its lively characteristics of epoxy groups in the molecular chain can be the end of the middle or into the ring. Because the molecular structure of epoxy groups with lively, so that they can place various types of curing agents to form insoluble cross-linking reaction, does not melt with the three-network structure polymer.

★ performance and characteristics of epoxy resin

1, in various forms. A variety of resins, curing agents, modifiers can be adapted to a variety of system applications is almost the request form, which can range from very low viscosity to high melting point solid.

2, curing convenience. Use a variety of curing agent, epoxy resin system can almost 0 ~ 180 ℃ temperature range of curing.

3, strong adhesion. Epoxy molecular chain polarity inherent in the presence of hydroxyl and ether, to a variety of materials with high adhesion. Contraction of epoxy curing low, the resulting internal stress, which also help to improve the adhesion strength.

4, the shrinkage is low. Epoxy resin and curing agent used in the reaction or by direct addition reaction of epoxy resin molecules in the ring-opening polymerization reaction carried out, no water or other volatile by-product release. They and unsaturated polyester resins, phenolic resins, the curing process shows very low shrinkage (less than 2%).

5, the mechanical properties. Cured epoxy resin system with excellent mechanical properties.

6, the electrical properties. Cured epoxy resin system is a high dielectric properties, resistance to surface leakage resistance, good insulation material arc.

7, the chemical stability. Typically, the cured epoxy resin system with excellent alkali resistance, acid resistance and solvent resistance. Like other properties of cured epoxy systems, like chemical stability also depends on the choice of resin and hardener. Proper selection of epoxy resin and curing agent, can make it special chemical stability.

8, dimensional stability. Many properties of the synthesis, the epoxy resin system has outstanding dimensional stability and durability.

9, resistant to mold. Cured epoxy resin system resistant to most fungi, can be used under harsh tropical conditions.

     Non-toxic epoxy resin and epoxy resin adhesive itself, but added in the preparation process and other toxic solvents, thus a lot of epoxy resin so "toxic" that the recent modification of epoxy resin industry is through the water to avoid Add other ways to keep epoxy "drug-free" character. At present, most epoxy coating for solvent-based paints, contain large quantities of volatile organic compounds (VOC), toxic, flammable, and thus harm the environment and the human body.

Epoxy resin generally refers to molecules containing two or more epoxy groups of organic polymers, with the exception, but they are not high relative molecular mass. The molecular structure of epoxy resin is based on the molecular chain of epoxy groups with its lively characteristics of epoxy groups in the molecular chain can be the end of the middle or into the ring. Because the molecular structure of epoxy groups with lively, so that they can place various types of curing agents to form insoluble cross-linking reaction, does not melt with the three-network structure polymer.

★ performance and characteristics of epoxy resin

1, in various forms. A variety of resins, curing agents, modifiers can be adapted to a variety of system applications is almost the request form, which can range from very low viscosity to high melting point solid.

2, curing convenience. Use a variety of curing agent, epoxy resin system can almost 0 ~ 180 ℃ temperature range of curing.

3, strong adhesion. Epoxy molecular chain polarity inherent in the presence of hydroxyl and ether, to a variety of materials with high adhesion. Contraction of epoxy curing low, the resulting internal stress, which also help to improve the adhesion strength.

4, the shrinkage is low. Epoxy resin and curing agent used in the reaction or by direct addition reaction of epoxy resin molecules in the ring-opening polymerization reaction carried out, no water or other volatile by-product release. They and unsaturated polyester resins, phenolic resins, the curing process shows very low shrinkage (less than 2%).

5, the mechanical properties. Cured epoxy resin system with excellent mechanical properties.

6, the electrical properties. Cured epoxy resin system is a high dielectric properties, resistance to surface leakage resistance, good insulation material arc.

7, the chemical stability. Typically, the cured epoxy resin system with excellent alkali resistance, acid resistance and solvent resistance. Like other properties of cured epoxy systems, like chemical stability also depends on the choice of resin and hardener. Proper selection of epoxy resin and curing agent, can make it special chemical stability.

8, dimensional stability. Many properties of the synthesis, the epoxy resin system has outstanding dimensional stability and durability.

9, resistant to mold. Cured epoxy resin system resistant to most fungi, can be used under harsh tropical conditions.