What harm does resin do to the human body

The resin we are most familiar with is the resin lens. Its advantages are that it is relatively light and highly wear-resistant. Resin is non-toxic, so resin lenses are not toxic at all. However, epoxy resin does have certain hazards. This is because some toxic substances are added to epoxy resin. These toxic substances are generally volatile and flammable, which are harmful to the body. Therefore, you must be cautious when using epoxy resin products to avoid causing harm to the human body.

Epoxy resin is generally used with additives to obtain application value. Additives can be selected according to different uses. Commonly used additives include the following categories: (1) curing agent; (2) modifier; (3) filler; (4) diluent; (5) others.

Among them, curing agent is an indispensable additive. Whether it is used as an adhesive, coating or castable, curing agent must be added, otherwise the epoxy resin cannot be cured.

Due to different performance requirements for different uses, there are also different requirements for epoxy resins and additives such as curing agents, modifiers, fillers, diluents, etc. The following is a brief introduction to their selection methods:

1. Selection of epoxy resin

1. Choose from the purpose

When used as an adhesive, it is best to use a resin with a medium epoxy value (0.25-0.45), such as 6101 and 634; when used as a castable, it is best to use a resin with a high epoxy value (>0.40), such as 618 and 6101; when used as a coating, a resin with a low epoxy value (<0.25) is generally used, such as 601, 604, 607, 609, etc.

2. Choose from the perspective of mechanical strength

Resins with too high epoxy values ​​are stronger but more brittle; resins with medium epoxy values ​​have good strength at both high and low temperatures; and resins with low epoxy values ​​have poor strength at high temperatures. Because the strength is related to the degree of cross-linking, the higher the epoxy value, the higher the degree of cross-linking after curing, and the lower the epoxy value, the lower the degree of cross-linking after curing, which causes differences in strength.

3. Choose from the operational requirements

If you do not need to withstand high temperatures and do not have high strength requirements, and you hope that the epoxy resin can dry quickly and not easily drain, you can choose a resin with a lower epoxy value. If you hope for good permeability and strength, you can choose a resin with a higher epoxy value.