Preparation method of polyurethane energy-absorbing material

An energy-absorbing material, polyurethane technology, applied in the field of polyurethane energy-absorbing material preparation, can solve the problems such as difficult control of isopropanol volatilization, side reactions, etc., achieve good shear thickening performance and increase complexity
CN103145941BActive Publication Date: 2015-03-11BEIJING UNIV OF CHEM TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING UNIV OF CHEM TECH
Publication Date
2015-03-11

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Abstract

The invention relates to a preparation method of a polyurethane energy-absorbing material. Hydroxyl silicone oil is adopted as a good solvent for boriding organosilicon polymer to prepare shear thickening fluid, thereby overcoming the problems of splitting phase, difficultly controlling the volatilization amount of isopropanol, producing side reaction with MDI and the like in the prior art. Compared with the prior art, the preparation method of the polyurethane energy-absorbing material is simple in preparation technique, short in preparation cycle, strong in operation controllability, and capable of improving the stability of products and benefiting the realization of large-scale production.
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Description

Technical field:

[0001] The invention relates to a preparation method of a polyurethane energy-absorbing material. Background technique:

[0002] From the 1940s, German chemist Otto Bayer first synthesized compounds containing carbamate characteristic groups in the process of studying the reaction process of isocyanate addition polymers. With the continuous deepening of research in academia and industry, polyurethane has gradually become a kind of synthetic material with a wide range of uses. Its industrial production is mainly composed of polyvalent organic isocyanate and various hydrogen donor compounds (usually such as polyols compound) prepared by reaction. By choosing different numbers of functional groups and different types of functional groups, and using different synthesis processes, polyurethane products with different properties and appearances can be prepared.

[0003] The types of polyurethane products are extremely rich, including foam plastics from very soft...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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