Manufacturing technique of high wear-resisting polyurea elastomer spraying layer

Abstract

The invention employs a special polyurea spray device with a reaction raw material volume ratio of VA to VB being 2:1, matching a manufacturing technique of high wear-resisting polyurea elastomer spraying paint, to prepare a high wear-resisting polyurea coating, which belongs to the technical field of new materials. The high wear-resisting polyurea coating is a lining wear-resisting layer material suitable for mine clastic rock transportation, vibratory screening and sediment-containing water pipe transportation as well as site operation. In the traditional related wear-resisting techniques, a polyurethane pouring process is used commonly; since the polyurea coating needs to be prefabricated and cannot be manufactured on spot under the restriction of shapes and assembly structure of wear-resisting components, the application on multiple complex occasions are limited. Currently, a universal type polyurea material is used, the spray device with the reaction raw material volume ratio of VA to VB being 1:1 is adopted for construction, the degree of chemical cross linking of the raw material is obviously lower than the polyurea pouring body, and an optimal wearing-resisting effect can not be achieved in the application of the high wear-resisting polyurea material due to the limitation of application device. In the invention, the polyurea spray device with the reaction raw material volume ratio of VA to VB being 2:1 and a matched polyurea material formula system are used to prepare the elsatomer coating, the used material has good wear-resisting property, and overcomes the defect of the universal type polyurea material in the aspect of high wear-resisting property and non-in-site construction of the pouring polyurea. Therefore, application field of polyurea spraying to the wear-resiting lining layer is broadened, and a new wear-resisting material application facilitating in-site construction is formed.

Description

[technical field] [0001] The invention belongs to the technical field of wear-resistant paint manufacture and application, and specifically relates to a manufacturing technology for preparing a high wear-resistant polyurea elastomer coating suitable for on-site spraying construction by adopting a new process. [technical background] [0002] At present, the usual spray polyurea coatings in the domestic market are made of V A :V B = 1:1 polyurea spraying equipment construction, known as general-purpose spraying polyurea. while V A :V B = 1:1 equipment has defects in the application of polyurea materials in high elasticity, low hardness polyurea and high wear-resistant pure polyurea, use V A :V B =1:1 The performance of the material formula system supporting the equipment cannot reach the wear-resisting technical index required by the present invention. Therefore, in the application of polyurea, new materials or processes are expected to provide polyurea coatings with bet...

AI Technical Summary

Problems solved by technology

while V A :V B = 1:1 equipment has defects in the application of polyurea materials in high elasticity, low hardness polyurea and high wear-resistant pure polyurea, use V A :V B =1:1 The performance of the material formula system supporting the equipment cannot reach the wear-resisting technical index required by the present invention

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