Polyether amine technology should have the required hardness after the reaction with resin

2020-05-18 10:50:45

Polyether amine can be used as curing agent, mainly to play a good viscosity, so in the field of application is relatively broad, it generally contains the primary amine connected to one end of the main chain of polyether. The main chain generally has the mixed structure of EO, PO or EO / PO, so it is named "polyether amine". One of the purposes is to use it as curing agent of epoxy jewelry adhesive. Why choose it as curing agent?

When casting and making ornaments, ornament glue requires low viscosity of colloid, mold forming, good fluidity, non brittleness, low heat release, little shrinkage, and good flexibility of colloid before and after demoulding. It can release the internal stress generated in the curing process as much as possible, keep the colloid unchanged, and concentrate these many characteristics in one. Only with it can it be perfectly achieved.

When polyether amine is used, we need to pay special attention. We need to ensure the quality and purity of the product, and it will not be mixed by other substances. Therefore, when we use this kind of curing agent, we must pay attention to the following matters, so that we can better ensure the use effect of the product.

1. Before using polyether amine, the oil, dust and rust on the contact surface of the adhesive must be cleaned.

2. Appropriate dosage can be added in low temperature, humid environment or under water.

3. Add some fillers as required.

4. Polyether amine shall be protected from rain, sun and moisture during transportation.

5. Store in cool and dry condition, away from fire source, strong acid, strong alkali and strong oxidant.

6. Under the transportation and storage conditions that meet the requirements of the standard, the storage period is 12 months from the date of polyether amine production.

Polyether amine technology is constantly improving, and the products are also constantly improving. Now we have begun to study how to improve the hardness of the product. In fact, for the product itself, it only has advantages and disadvantages, not only can improve the performance of the product, but also to a large extent, it can play an excellent role in the performance advantages. This is what we want to see, isn't it? Let's not say much. Next, let's have a simple understanding of what is the way to improve its hardness?

The hardness of pure polyether amine curing agent can not be clear, so can polyether amine curing agent. Polyether amine technology should react with resin to produce the required hardness. Generally, there is a suitable proportion, according to different use requirements. Generally, the content of curing agent is too much, and the hardness is high (the curing temperature is high, and the same content and hardness are also high), but the hardness of filler is improved significantly! The addition of such fillers shall depend on the use of the final product.