Description: China has now become the world's largest producer of polyester (PET), especially PET, which has occupied about 80% of all synthetic fibers as fiber material. It is the largest and most widely used synthetic fiber. However, due to its inherent flammability and melting drop, polyester has been limited in some important areas, such as flame retardant protective clothing and military uniform, electronic devices, etc. Melting drop Defects. In this study, a flame retardant and droplet resistant copolyester can be synthesized by molecular design and self crosslinking at polyester combustion temperature.

The polyester has the following characteristics: 1. it does not crosslink in polymerization, processing and spinning process, that is, it does not affect spinning property. 2. the crosslinking temperature has a certain processing window between the melting point and the thermal decomposition temperature. It is also sufficient to ensure that the polyester is first crosslinked and decomposed to flame retardant and anti droplet. 3. it can be rapidly cross-linked under high temperature and can achieve enough melt viscosity, which is sufficient for flame-retardant and anti droplet. The problem of flame retardation and droplet resistance of polyester is solved well by self crosslinking at high temperature.

Main technical specification: self crosslinking at high temperature polyester Tm=210 degree C~245 degree C, the temperature is more than 350 degrees C, and the molecular weight of the data is more than 10000. The flame retardancy of high temperature self crosslinking polyester is HRR less than 150kw/m, UL94 is V0, LOI is more than 30. Droplet properties of self crosslinking polyester at high temperature: the splines are directly ignited almost without droplets.

main Economic indicators Analysis: the current cost is higher, 2 times higher than that of ordinary polyester.

Conditions for construction and commissioning: same as those of ordinary polyester and polyester fiber production equipment.

Application area and market demand analysis: the product can be applied to some important fields that have strict requirements for flame retardancy and anti droplet of polyester, such as flame retardant protective clothing, uniform and electronic devices. At the same time, because there is no halogen-free polyester with flame retardancy and anti droplet in the market, the product has good prospects for development.

Ways of cooperation: technology transfer, technology equity participation and cooperative development.