Sealing material based on polyurethane foam

A polyurethane foam and sealing material technology, applied in the field of materials, can solve the problems of on-site weather conditions, etc., and achieve the effects of good environmental adaptability, low comprehensive cost, and good economic benefits

Inactive Publication Date: 2018-06-29
苏州浩洋聚氨酯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Polyurethane rigid foam has been widely used due to its high-quality thermal insulation performance, and has been gradually applied to the field of thermal insulation pipelines. These thermal insulation pipelines are all produced in factories under set controllable conditions. Pipe connections can only be made under the weather conditions of the construction site, and additional insulation is still required after the joints have been welded

Method used

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Embodiment Construction

[0011] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand the various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of this application.

[0012] A kind of sealing material based on polyurethane foam of the present embodiment is made of polyisocyanate, polyether polyol, foaming agent, chain extender, catalyst and auxiliary agent, and described polyether polyol is formed by DMC catalyst in the presence of Obtained by reacting at least one polyester polyol and at least one alkoxylation agent, the number average molecular weight of the polyether polyol is 3000-8000, and the chain extender is a diol with an aliphatic linear carbon chain, the The...

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Abstract

The invention discloses a sealing material based on polyurethane foam. The sealing material is prepared from polyisocyanate, polyether polyol, a foaming agent, a chain extender, a catalyst and an additive, wherein polyether polyol is obtained by reaction of at least one polyester polyol and at least one oxyalkylation agent in the presence of a DMC catalyst; the number-average molecular weight of polyether polyol is 3000-8000; the chain extender is diol with an aliphatic linear carbon chain, and the aliphatic linear carbon chain contains 1-10 carbon atoms; and the additive is fumed silica.

Description

technical field [0001] The invention relates to a sealing material based on polyurethane foam, which belongs to the technical field of materials. Background technique [0002] Polyurethane rigid foam has been widely used due to its high-quality thermal insulation performance, and has been gradually applied to the field of thermal insulation pipelines. These thermal insulation pipelines are all produced in factories under set controllable conditions. Pipe connections can only be made under the weather conditions of the construction site, and additional insulation is still required after the joints have been welded. [0003] Therefore, there is a need for a polyurethane foam with low overall cost and good environmental adaptability. Contents of the invention [0004] In order to solve the deficiencies in the prior art, the present invention proposes a sealing material based on polyurethane foam. [0005] In order to solve the above-mentioned technical problems, the present...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/48C08G18/32C08G18/10C08K3/36C08J9/08C09K3/10
CPCC08G18/10C08G18/3206C08G18/48C08G18/6674C08K3/36C09K3/10C08G2110/0083
Inventor 周建颜玉荣
Owner 苏州浩洋聚氨酯科技有限公司
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