Flame retarding and sound insulating pad with high density and low smoke toxicity and preparation method thereof

Abstract

The invention relates to a flame retarding and sound insulating pad with high density and low smoke toxicity and a preparation method thereof. The flame retarding and sound insulating pad with the high density and the low smoke toxicity belongs to a rubber product. The flame retarding and sound insulating pad with the high density and the low smoke toxicity is prepared by steps of: mixing 20-300 parts of chlorinated polyethylene, 10-200 parts of butadiene styrene rubber, 10-800 parts of barium sulfate, iron compound and mica, 10-400 parts of inorganic flame retardant, 1-50 parts of auxiliary and 1-10 parts of antiager RD according to a formula ratio by an internal mixer, and molding the components by a calender to form the pads with corresponding specifications. The pad disclosed by the invention maintains good flexibility and tailing property, has excellent physical properties such as high sound insulating quantity, high flame retarding level, low smoke level, low smoke toxicity, no drippage of combustion and the like, and can be widely applied to sound insulating and noise reducing treatment of motor train units, buildings and pipelines. The pad is a novel, safe, green and efficient sound insulating product.

Description

technical field [0001] The invention belongs to a sound-insulating, shock-absorbing and damping acoustic material and a preparation method thereof, and particularly relates to a high-density, low-smoke-toxic, flame-retardant sound-insulating pad in the field of polymer materials and preparation method. Background technique [0002] The sound insulation effect of the sound insulation pad is directly determined by the density of the material. The same thickness, the greater the density, the greater the sound insulation. At present, most of the sound insulation mats on the market have a density lower than 2.0g / cm 3 The sound insulation pad is mainly used, the density is greater than 2.3g / cm 3 High-quality sound insulation materials have disadvantages such as poor flame retardancy and environmental protection, and high prices. This is because in order to obtain a high-density sound-insulating material, increasing the filler filling amount of the sound-insulating pad materia...

AI Technical Summary

Problems solved by technology

A large amount of iron powder in the material is likely to cause rapid wear on the rotor and screw of the internal mixing equipment during the material mixing process, increasing the processing cost

At the same time, iron powder is easy to precipitate on the surface of the material, and it is easy to rust in a humid environment

At present, there is no report on the sound insulation material that takes into account high density, high flame retardancy, low smoke, low smoke toxicity, and does not use pure iron powder as a filler.