| abstract |
The invention relates to the technical field of high polymer materials, in particular to a high-flame-retardant high-heat-resistant MPP pipe and a preparation method thereof, wherein the MPP pipe comprises the following raw materials in parts by weight: 68-102 parts of polypropylene resin, 0.1-2.5 parts of antioxidant, 2-8 parts of compatilizer, 8-15 parts of flame retardant, 1-5 parts of synergist, 6-15 parts of acrylate fiber, 4-10 parts of heat-resistant filler and 1.5-3.5 parts of modified silica fume, wherein the heat-resistant filler is prepared from calcium carbonate, lignocellulose and magnesium silicide in a weight ratio of (3-12): 3-8: 1-2. The MPP pipe has better performances of flame retardance, heat resistance, smoke suppression, stability, oxidation aging resistance and the like, and high strength, can effectively improve the heat resistance and the processing fluidity of the MPP pipe and reduce the surface glossiness by adopting the heat-resistant filler, and has good forming performance, good processing performance and high use value. |