Method for recycling and reproducing waste airbags

Abstract

The invention belongs to the technical field of airbag recovery and in particular relates to a method for recycling and reproducing waste airbags. The method comprises the following steps: dissolvingto remove impurities, evaporating, reacting with cashew nut shell oil and preparing a bumper material. Compared with the existing technology, the method disclosed by the invention has the advantages that the waste airbags are evaporated by using a phenol-glacial acetic acid solution so as to remove impurities in the airbags, and one part of unavailable components are separated, so that the activeingredients in the airbags can be fully utilized; due to a reaction with the cashew nut shell oil under a vacuum condition, the bonding strength and a melting range of a recycled nylon 66 material arechanged, effective compatibility to raw materials such as polypropylene can be facilitated, a thermodynamic homogeneous system is formed, and the overall performance of the obtained material is improved. The material is high in impact toughness and has high oil resistance and aging resistance, the requirements on automotive bumper materials can be met, convenience is brought to processing, the environmental pollution is reduced, and the waste airbags are effectively recycled.

Description

technical field [0001] The invention belongs to the technical field of airbag recycling, and in particular relates to a method for recycling and reproducing waste airbags. Background technique [0002] The airbag has good physical and mechanical properties, and requires high strength, light weight, good friction and elasticity, and suitable thermal performance. It should have a high melting point and high enthalpy, which is conducive to the thermal load generated when the airbag is deployed. With effective flame retardancy, high chemical stability, aging resistance, and small folding volume, nylon 66 fine-denier industrial filaments are usually used in the prior art because nylon 66 has high strength and high heat enthalpy It can be effectively flame retardant before air inflation, but nylon 66 waste is difficult to degrade under natural conditions. The waste not only pollutes the environment, but also brings hidden dangers to the sustainable development of the national econ...

AI Technical Summary

Problems solved by technology

[0002] The airbag has good physical and mechanical properties, and requires high strength, light weight, good friction and elasticity, and suitable thermal performance. It should have a high melting point and high enthalpy, which is conducive to the thermal load generated when the airbag is deployed. With effective flame retardancy, high chemical stability, aging resistance, and small folding volume, nylon 66 fine-denier industrial filaments are usually used in the prior art because nylon 66 has high strength and high heat enthalpy It can be effectively flame retardant before air inflation, but nylon 66 waste is difficult to degrade under natural conditions. The waste not only pollutes the environment, but also brings hidden dangers to the sustainable development of the national economy. A large amount of liquid waste and solid waste are produced during the decomposing process, causing a large amount of liquid waste and solid waste to the environment, and causing secondary pollution to the environment. Therefore, further research on how to effectively recycle it is needed.

[0003] Automobile bumper is a large structural part with large surface area and complex shape. It not only requires excellent high and low temperature impact toughness, rigidity, aging resistance, heat resistance, but also oil resistance and sprayability. The existing technology usually Polypropylene is selected as the main raw material, but polypropylene has high low-temperature brittleness and large molding shrinkage. Therefore, the impact resistance is poor, so further research on its raw materials is required