A kind of flame retardant high damping rubber composition and its preparation method and application

Abstract

The invention provides a flame-retardant and high-damping rubber composition and its preparation method and application. The rubber composition is a non-black rubber composition, and comprises the following components in parts by weight: 80-100 parts by weight of butyl rubber , 5-13 parts by weight of vulcanization system, 40-100 parts by weight of flame retardant, 4-12 parts by weight of antioxidant and 10-30 parts by weight of pigment. The rubber composition has excellent flame retardancy and photo-oxidative aging resistance under the premise of ensuring damping properties and acoustic performance through screening of raw materials and compounding of components. The rubber composition is a safe and environment-friendly polymer material, its flame retardant performance can reach V-0 level, there is no obvious color difference under ultraviolet radiation, and it is excellent in mechanical performance, damping performance, aging resistance and appearance color. The utility model can fully meet the use requirement of the rubber edge of the loudspeaker, and has a good market application prospect.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a flame-retardant and high-damping rubber composition and a preparation method and application thereof. Background technique [0002] Commonly used rubber materials for speaker rubber edge include butyl rubber (IIR), nitrile rubber (NBR) and ethylene propylene diene monomer (EPDM), etc., whose oxygen index is less than 22, which is a flammable material. As a household electrical appliance, the speaker will generate heat during use, and occasionally there will be a short circuit. The speaker heat or short circuit may catch fire and cause safety accidents, threatening personal and property safety. Therefore, as an important part of the speaker, the use of flame-retardant rubber edge is imperative. In addition, with the diversified development of speaker application scenarios and application environments, new requirements have also been placed on the performan...

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Problems solved by technology

[0004] At present, the research and development of flame-retardant rubber materials is mainly concentrated in the fields of cables, rubber pipes, rubber floors, and interior materials of various vehicles. Since the above-mentioned materials themselves are black, the aging resistance of the materials under long-term sunlight is rarely involved. , and rarely consider whether the damping performance and hardness of the rubber material itself matches the acoustic requirements

At the same time, with the increasingly stringent environmental protection policies, many traditional flame retardants are banned, and it is necessary to develop new environmentally friendly flame retardants to meet application requirements; and the halogen and phosphorus nitrogen flame retardants commonly used in rubber materials The weather resistance itself is poor, and it will be partially decomposed during the rubber processing process, and the acidic or oxidative substances produced will affect the functions of other additives in the material, so that the comprehensive physical properties of the rubber material cannot meet the application requirements.

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