Ceramized polyolefin material and preparation method thereof

Abstract

The invention discloses a ceramized polyolefin material and a preparation method thereof, belonging to the field of electric wire and cable materials. The ceramized polyolefin material comprises the following raw material components: 100 parts of an ethylene-alpha-olefin copolymer, 100-200 parts of ceramized powder A, 20-100 parts of ceramized powder B, 100-200 parts of ceramized powder C, 5-40 parts of a lubricating agent and 0.1-1 part of an antioxidant, wherein the ethylene-alpha-olefin copolymer is one or more selected from an ethylene and alpha-propylene copolymer, an ethylene and alpha-butylene copolymer, an ethylene and alpha-hexylene copolymer and an ethylene and alpha-octene copolymer; the ceramized powder A is one or a combination of more than one selected from layered inorganic powder, fibrous inorganic powder and needle-like inorganic powder; the ceramized powder B is at least one selected from borax, ammonium borate, a zinc borate and boron frit, phosphate glass powder with a low melting point, borate glass powder with a low melting point and silicate glass powder with a low melting point; the ceramized powder C is granular powder with excellent high-temperature insulativity; and the antioxidant is at least one selected from 1010, 1076, 168, 626, 300 and DSTDP.

Description

technical field [0001] The invention belongs to the technical field of wire and cable materials, in particular relates to a ceramic polyolefin material, and also relates to a preparation method thereof. Background technique [0002] With economic development, social progress, and significant improvement in living standards, people's awareness of safety in food, clothing, housing, transportation, and use has increased in all aspects. Among them, the safety of electricity use has become increasingly stringent. In view of the fact that wires and cables are important carriers of power systems, their safety has attracted much attention. Since the fire-resistant cable can guarantee the emergency facilities and equipment to continue to run for a certain period of time in a reasonable period of time in the burning state, it will win valuable time and / or create favorable conditions for the escape of people trapped in the fire and the rescue of firefighters. Conditions, so more by th...

AI Technical Summary

Problems solved by technology

The disadvantage of this patent solution is: when used, it needs to be extruded by a special rubber extruder, and it needs to be vulcanized through a vulcanization process, so the process is relatively complicated and the scope of application is limited; if the cable material is made into a silicone rubber belt , and wrap it outside the cable core during the wire and cable processing process, the production efficiency is low and the cost is high, which is not conducive to industrial scale-up production; another example is the invention patent application publication number CN103525092A which provides "a kind of ceramic silicone rubber cable material and Its preparation method", formula (by weight): 80-90 parts of silicone rubber, 10-20 parts of natural rubber, 20-30 parts of mineral silicate, 10-15 parts of antimony trioxide, 10 parts of ammonium polyphosphate -20 parts, 4-6 parts of zinc oxide, 1-2 parts of antioxidant (DTPD), 20-30 parts of spray carbon black, 10-20 parts of light calcium carbonate, 14-16 parts of aluminum hypophosphite, calcium stearate 1-2 parts, 1-2 parts of pentaerythritol, 1-2 parts of talc powder and 12-14 parts of modified filler

This patent application scheme all adopts ceramic silicon rubber material like aforementioned CN101169993B, and this patent application scheme also has the described shortcoming of aforementioned CN10116999B except that the formula is complicated; Its preparation method" (one of the inventors of this patent is the first inventor of this application), this patent solution has ceramic performance and can objectively reflect the technical effects recorded in paragraphs 0023 to 0025 of its description, but the formula and The preparation process is complicated, and because it contains more polyethylene (30-40 parts by weight in the system), the processing temperature is higher, the energy consumption is large, and it is economical and cheap; and then as disclosed in the invention patent application publication number CN103509237A There is "a kind of rapid ceramic refractory cable material". From paragraph 0005 of the specification of the patent application, it can be known that its formula is very complicated, and because the proportion of filler is unreasonable, the strength and compactness of the ceramic material are difficult to meet expectations; moreover For example, the invention patent application publication number CN103865166A discloses "low-smoke and halogen-free ceramic polyolefin cable material and its preparation method". After extruding other materials, the performance of the porcelain crust is obviously reduced, and the strength of the residue is very low

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