Cover rubber used for low-temperature vulcanized high-performance halogen-free flame-retardant laminated conveyor belt, and preparation method thereof

Abstract

The invention relates to a low-temperature vulcanized high-performance halogen-free flame-retardant laminated conveyor belt cover rubber, and belongs to the technical field of conveyor belt. According to a preparation method, EVM and EBA mixed rubber is taken as a matrix; a peroxide is taken as a cross-linking agent, and an auxiliary crosslinking agent, a silane coupling agent, a filling reinforcing agent, a fire retardant, and other auxiliary agents are added; and high-performance halogen-free flame-retardant laminated conveyor belt is obtained via low temperature (95-120 DEG C) vulcanization using a plate vulcanizing machine. Effective low temperature vulcanization of the low-temperature vulcanized high-performance halogen-free flame-retardant laminated conveyor belt cover rubber can be realized at a relatively low temperature; vulcanization of the low-temperature vulcanized high-performance halogen-free flame-retardant laminated conveyor belt cover rubber at low temperature conditions is capable of protecting the excellent performance of a cover rubber matrix and adopted skeleton materials, ensuring the safety of conveyor belt technology, and increasing production efficiency. The preparation method is capable of solving a difficult problem that the excellent performance of rubber matrix and the skeleton materials is destroyed by relatively high halogen-free flame-retardant cover rubber vulcanization temperature; rubber vulcanization technology is improved; a method is provided for production of special conveyor belt; and company benefit is increased.

Description

technical field [0001] The invention relates to a low-temperature vulcanized high-performance halogen-free flame-retardant laminated conveyor belt covering rubber and a preparation method thereof, belonging to the technical field of conveyor belts. Background technique [0002] Flame retardant research in the rubber industry started in the 1950s and developed in the 1960s. The most commonly used method is to add non-combustible or flame-retardant materials and additives to the rubber product materials, such as: aluminum hydroxide, magnesium hydroxide, chlorinated paraffin, phosphate esters and brominated flame retardants. These flame-retardant materials have obvious flame-retardant effects, making rubber products flame-retardant or non-flammable. However, with the development of science and technology, people have found that although many fires have adopted high-efficiency flame-retardant materials, the losses caused by fires are still very large. It can be classified into...

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Problems solved by technology

(2) The smog contains a large amount of corrosive substances, which will corrode the control system of equipment and instruments, and cause secondary disasters due to operation failure

[0003] If the vulcanization temperature is too high, the disadvantages are obvious: firstly, if the vulcanization temperature is too high, the rubber and the skeleton material will be aged and scorched, resulting in a serious loss of the mechanical properties of the skeleton material, and the mechanical properties of the conveyor belt cannot be guaranteed; secondly, due to the thermal conductivity of the rubber material Poor, when vulcanized at a higher temperature, the temperature rise between the inside and outside of the rubber material will not be synchronized, and the temperature difference between the inside and the outside will increase, so that the outside of the rubber has reached a positive vulcanization state, but the internal temperature continues to rise and cause the rubber The volume of the material continues to expand, causing defects such as product wrinkles, cracks, and inner voids

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