68results about How to "High flame retardant level" patented technology

The invention discloses a halogen-free flame retardant polylactic acid composite material which is formed by taking polylactic resin as a body, and adding a mixture of ammonium polyphosphate and a char forming agent, SO42- / MxOy type solid super-strong acid, an antioxidizer, a nucleating agent and an anti-melting drop agent through melt blending. The halogen-free flame retardant polylactic acid composite material comprises the following components in parts by weight: 70 to 95 parts of the polylactic resin, 3 to 25 parts of the mixture of the ammonium polyphosphate and the char forming agent, 0.1 to 5 parts of the SO42- / MxOy type solid super-strong acid, 0.01 part to 3 parts of the antioxidizer, 0.1 part to 2 parts of the nucleating agent and 0.1 part to 10 parts of the anti-melting drop agent. Compared with the prior art, the halogen-free flame retardant polylactic acid composite material synergistically promotes the fire retardation performance of the polylactic acid composite material through the catalytic action of the SO42- / MxOy type solid super-strong acid and the synergistic effect char forming fire retardation action of a nitrogen and phosphorus intumescent type fire retardant, has the advantages of environmental protection and high fire retardation level, and can furthest reduce the affect of addition of auxiliaries to the physical and mechanical performance of polylactic acid body materials simultaneously.

The invention relates to a continuous fiber enhanced thermoplastic antiflaming presoaking belt composite material and a preparation method thereof. The composite material is prepared from the following raw materials by weight percent: 45-55% of modified resin and 55-45% of continuous fiber. According to the preparation method in the invention, the composite material is obtained by reasonable fiber dispersion, resin impregnation and composite rolling processes based on the resin containing a flame retardant, a grafting agent, glass microsphere and other auxiliaries and the continuous fiber treated by an impregnating agent which are used as raw materials; compared with the prior art, by using the preparation method in the invention, the problem that the antiflaming resin is difficultly impregnated due to poor flowability is overcome, the produced continuous fiber enhanced thermoplastic antiflaming presoaking belt has extremely high strength, modules and impact property and has antiflaming characteristic, wherein the antiflaming grade can reach UL94 V0 grade.