Polyurethane rubber composite material and preparation method thereof

Abstract

The invention relates to a composite material and the preparation field thereof, in particular to a polyurethane rubber composite material. The polyurethane rubber composite material comprises the following components in percentage by weight: 50 to 70 percent of polyether glycol (PPG), 18 to 50 percent of isocyanate (MDI), 6 to 9 percent of crosslinking agent, 1 to 3 percent of catalyst, 4 to 5 percent of aid, 0.9 to 2 percent of water, 1 to 10 percent of surfactant, 1 to 4 percent of triisocyanate, 1 to 3 percent of sulfur accelerating agent, 2 to 4 percent of foaming agent, 1 to 3 percent of internal lubricant, 2 to 3 percent of external lubricant and 1 to 10 percent of coloring agent. The rubber composite material is prepared by the preparation method. Compared with the traditional hard rubber, the polyurethane rubber composite material has a low density and a stable size and can greatly save materials.

Description

[0001] technical field [0002] The invention relates to the field of composite materials and preparation thereof, in particular to polyurethane rubber composite materials and a preparation method thereof. [0003] Background technique [0004] Existing rubber foam materials usually use chemical foaming agents such as azo (such as azoformamide), 4,4 bisbenzenesulfonyl hydrazide, and dinitrosopentamethylenetetramine as foaming agents. , by controlling the amount of foaming agent to control the foaming (expansion) ratio (that is, the size) of the foaming material, the disadvantage is that the size of the foaming material is difficult to control, and the shrinkage rate of the material after foaming is large, and the size is easy to change. And the calculation of mold magnification is difficult. If hard rubber (non-foaming rubber) is used, although the size is stable after molding, the density is high and the amount of consumables is large, resulting in a waste of resources. ...

AI Technical Summary

Problems solved by technology

[0004] Existing rubber foam materials usually use azo (such as azoformamide), 4,4 bisbenzenesulfonyl hydrazide, dinitroso Chemical foaming agents such as pentamethylenetetramine are used as foaming agents, and the foaming (expansion) ratio (ie size) of the foaming material is controlled by controlling the amount of the foaming agent. The disadvantage is that the size of the foaming material is difficult to control , and the shrinkage rate of the material after foaming is large, the size is easy to change, and the calculation of the mold ratio is difficult

If hard rubber (non-foaming rubber) is used, although the size is stable after molding, it has a high density and a large amount of consumables, resulting in a waste of resources.

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