Experts say that the needs of the product should be given priority. Each product has its own advantages and disadvantages. Usually the dilution capacity is the primary factor, but according to different needs, you can also choose HDT, or acid and alkali resistance or toughness. The main factor. The expert focused on the comparison of several important commonly used diluents as follows: H61 as an entry-level active diluent, still has its unique use, outstanding viscosity reduction ability is the biggest advantage of H61, but there is a high vapor pressure and some The danger of partial toxicity, and the poor water resistance and acid resistance of the test, but it is actually very difficult to obtain high-purity BGE. In the face of many BGE products with excessive impurities on the market, these BGEs actually contain a large amount of ring Oxychloropropane and some solvents are the main factors that damage the epoxy products. Generally, the addition amount of products on the market cannot exceed 10%, otherwise there will be major defects. Therefore, the average paint worker will think that BGE seriously affects the coating performance. In fact, the recommended dosage of H61 is 10-20%, and EPON815 is a product with a dosage of 20%. Therefore, high-purity H61 still has great application potential, especially for those coating products with extremely strict viscosity requirements. Of course, the best choice in terms of environmental protection, safety and performance is H8, commonly known as AGE, which is the most widely used in coatings and potting.
H8 is an AGE with carbon chain C12-C14. As the world's largest active diluent, H8 also has an ideal diluting capacity. Compared with CE-10, which is also aliphatic, CE-10 has a larger position. The resistance structure and mechanical properties are given priority to H8 by a few percentage points. According to experts from China Epoxy Resin Industry Association (www.epoxy-e.cn), H8 has a considerable advantage in terms of dilution performance. 15% can be added to the standard Epoxy resin is reduced to 1000cps, and CE-10 needs to be added 20%. H8 is significantly ahead of other modifiers in terms of toughness. This is achieved by sacrificing part of the rigidity of epoxy products with high rigidity and low toughness. Greater toughness is very useful, especially to enhance the wear resistance of the material. H8 is colorless and odorless, and has the best color value among all active diluents. H8 has extremely low surface tension, which means that the material can obtain better leveling performance. Therefore, H8 is undoubtedly the most cost-effective. The emergence of H62 broke the myth of the advantages of polyepoxides in terms of physical and chemical properties. H62 almost beats all diepoxy active diluents in performance comparisons, and its performance is not as good as polyepoxy diluents, but In terms of dilution performance, H62 is even higher than CE-10 of monoepoxy. This indeed confirms that the role of epoxy diluent lies in its reasonable molecular structure and purity. The ideal cured product is better than the theoretically perfect but not ideal cured product. Good performance. As a special high-performance thinner, H62 is undoubtedly the top performance in this product test.