(1) Research on alloy flame retardants. The so-called alloy flame　retardant is based on red phosphorus with a variety of modified additives and materials, combined by molecular chains and by interface fusion to form a molecular group, and then wrapped with a single molecular layer of surfactant Microencapsulated products.

　　The alloy type flame retardant is mainly based on the alloy processing idea of metallurgy, after technical treatment, the introduction of polar groups to further loosen the loose molecular bonds of various raw materials with weak binding force, so that various compounds interpenetrate, combine, and entangle To become a group member. Then it is further pulverized to the required particle size, and finally the surfactant is wrapped on the surface of the group of particles to be microencapsulated to improve the compatibility with the plastic. This alloy-type flame retardant is initially used for recycling polyethylene, polypropylene and double-stretch Good results are obtained on flame retardant products such as polypropylene strapping.

　　(2) Research on flame retardant for paper. The general paper is mostly flammable. In real life, a considerable number of fires are caused by paper and packaging materials. In order to eliminate the hidden fire hazards, many countries have formulated various fire safety regulations. The requirements are increasing day by day.

　　There are generally two types of flame retardants: one is paper made from inorganic fibers such as asbestos, mineral wool, glass fiber, etc., and the other is to add various flame retardants to the pulp or dip coating to make The paper products with burning effect are currently developing rapidly. The main flame retardants currently used in paper are phosphorus flame retardants, halogen flame retardants, hydrated alumina flame retardants, and borax flame retardants. Phosphorus-based flame retardants are widely used in paper flame retardant. The earliest phosphorus-containing flame retardant used in paper industry is diammonium hydrogen phosphate, and the current general application is an important high-efficiency resistance developed over the past few years. Burning agent ammonium polyphosphate (APP). Many phosphorus-based flame retardants contain nitrogen elements at the same time, and nitrogen-containing compounds will release nitrogen, nitrogen dioxide, ammonia and other gases to cut off the supply of oxygen after being heated, to achieve the purpose of flame retardant synergies and synergistic effects.