Process for preparing environment-friendly silicon rubber shed or awning cloth

Abstract

The invention discloses a process for preparing environment-friendly silicon rubber shed or awning cloth. The process comprises the following steps of: matching silicon rubber serving as a base with a reinforcing filler, an inorganic flame-retardant filler, a mineral flame-retardant filler, a metallic compound, a heat-resistant additive and a rolling aid to prepare flame-retardant silicon rubber;compounding the flame-retardant silicon rubber with a single-layer or multi-layer reinforced fabric treated by a coupling agent; and vulcanizing to prepare the silicon rubber shed (awning) cloth witha sandwich structure. The combustion performance of the prepared silicon rubber shed (awning) cloth passes Britain BS 6853 Code of Practice for Fire Precautions in the Design and Construction of Passenger Carrying Trains, and the silicon rubber shed (awning) cloth passes the certification of TB / T 3193 Decorating Materials and Indoor Air Limit of Harmful Substance for Railway Locomotive and Vehicle, and has the longitudinal strength of more than or equal to 3,000K / 30mm, the latitudinal strength of more than or equal to 2,300K / 30mm, good sealing property, high and low temperature resistance andanti-fatigue performance. Compared with the prior art, the environment-friendly silicon rubber shed or awning cloth comes up to or exceeds the similar products abroad, fills a blank in the field of China, and can be widely applied to rubber vestibule diaphragms at ends of underground and ground high-speed and superspeed rail trains.

Description

technical field [0001] The invention relates to a preparation process of an environment-friendly silicone rubber shed or tarpaulin, which belongs to the technical field of rubber materials. This kind of environment-friendly silicone rubber shed or tarpaulin has ultra-low smoke, low toxicity and flame retardant properties. Background technique [0002] The hazards of fire pervade all areas of society. In the field of rail transportation, fires have not been spared, and once they happen, the losses will be huge. The rubber shed (canopy) cloth, as the main material of the rubber windshield at the end of the train, is a necessary part of the sealing, heat insulation and sound insulation of modern rail trains. Its combustion performance has a direct impact on the consequences of fire, especially for relatively closed high-speed operating environment. Therefore, the development of environmentally friendly ultra-low smoke, low toxicity, halogen-free flame-retardant silicone rubb...

AI Technical Summary

Problems solved by technology

The utility model patent CN200920233328.2 introduces a silicone / aramid fabric flame-retardant adhesive tape structure, which is composed of surface flame-retardant silica gel, middle layer aramid fabric and bottom layer flame-retardant silica gel, but lacks the preparation process of silicone rubber formula and adhesive tape instruction of

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