Halogen-free and low-smoke flame retardant for preparing polyethylene material

Abstract

The invention discloses a halogen-free and low-smoke flame retardant for preparing a polyethylene material. The halogen-free and low-smoke flame retardant is prepared by compounding DMMP (Dimethyl Methyl Phosphonate), Mg(OH)2 (available in the market) modified by sodium stearate, 2,3-dimethyl-2,3-diphenylbutane, palygorskite clay and zinc tetraphenylporphyrin. In the polyethylene material prepared by utilizing the halogen-free and low-smoke flame retardant, the oxygen index is not lower than 32, the smoke density under a flameless condition is not higher than 75, the tensile strength is not lower than 12MPa, and the elongation at break is not lower than 180 percent, so that the polyethylene material is a modified halogen-free, low-smoke and anti-flaming polyethylene composite material with a very good performance and can be widely applied to the fields of electric wires and cables, buildings and the like. The flame resistance of the polyethylene material cannot be affected after the polyethylene material is subjected to conventional irradiation cross-linking if cross-linking treatment needs to be carried out on a prepared product, and the mechanical performance of the polyethylene material can be further increased.

Description

technical field [0001] The invention relates to a halogen-free smoke-suppressing flame retardant, in particular to a halogen-free low-smoke flame retardant for preparing polyethylene materials, and belongs to the technical field of composite materials. Background technique [0002] In the past 30 years, my country's national economy has achieved unprecedented rapid development under the guidance of the policy of reform and opening up, but the degree of fire hazards has been the most serious period since the founding of the People's Republic of China. Although in the mid-to-late 1990s, governments at all levels and all walks of life paid great attention to fire protection work and increased investment in fire protection, they did not stop the rising trend of fires, especially the serious fire accidents that occurred in the past one or two years. It not only warns that mass death and mass injury fires are showing a "rebound" trend, but also reflects the objective reality that ...

AI Technical Summary

Problems solved by technology

Due to the good performance of polyethylene, it is widely used in various industries. However, if the polyethylene used is not flame retardant in construction, wire and cable, home appliance manufacturing, automobile industry, communication and aerospace, it is very easy to Fire, causing various property and loss of life