Magnesite micro powder-assisting flame-resistant expanded halogen-free flame-resistant electronic wire-coated material and preparation method thereof

Abstract

The invention discloses a magnesite micro powder-assisting flame-resistant expanded halogen-free flame-resistant electronic wire-coated material and a preparation method thereof. The material consists of 100 parts of basic resin, 5-25 parts of compatilizer, 20-40 parts of fire retardant A, 10-30 parts of fire retardant B, 0-10 parts of fire retardant C, 5-25 parts of assistant fire retardant, 0-0.1 part of anti-dripping agent, 0.1-2 parts of lubricating agent and 0.1-1 part of antioxygen, wherein the fire retardant A is microcapsule-coated ammonium polyphosphate, the microcapsule takes phenolic resin as capsule wall, and the assistant fire retardant is modified micrometer-level magnesite micro powder. The material has good physical performance, does not obtain poisonous and harmful substances, does not release poisonous gas when burning, has good flame resistance, higher extension-resistant and breaking elongation ratio than congeneric products, higher flame-resistant effect than the congeneric halogen-free flame-resistant electric wire and cable material, greatly reduce the price, and particularly can be fast popularized in an industrialization way and applied in a marketization way due to the low price as high-grade magnesite resource is abundance in China.

Description

technical field [0001] The invention relates to a wire material with polyolefin as the main base material, in particular to a halogen-free expanded flame-retardant electronic wire outer quilt with magnesite micropowder as an auxiliary flame-retardant and a preparation method thereof. Background technique [0002] At present, the commonly used high flame retardant wire and cable materials are mainly made of PVC materials. Although it has high flame retardant efficiency and good temperature resistance, due to the plasticizers that must be used in the production of PVC wire and cable materials, it will be more or less affected. Influence on the human body. Wires and cables containing a large amount of halogens will release toxic and harmful gases in the event of fire and combustion, which is the main cause of casualties in closed spaces such as high-rise buildings or dance halls. PVC wire and cable materials are used in insulating layers. The electrical properties such as volum...

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Problems solved by technology

[0003] The problem to be solved by the present invention is that the flame retardant effect of the current halogen-free electronic wire outer covering is not ideal, the physical properties are low, the water resistance is poor, and the price is high. Boiled magnesite microwave is an auxiliary flame retardant expandable halogen-free flame retardant electronic wire coating

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