Polyurethane waterproof coating and preparation method thereof, and two-component polyurethane waterproof coating and preparation method thereof

A polyurethane waterproof and coating technology, applied in the field of polyurethane waterproof coating and its preparation, two-component polyurethane waterproof coating and its preparation, can solve problems such as not being able to meet multi-functional use

Pending Publication Date: 2021-09-14
四川省飞翎防水科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditionally, two-component polyurethane waterproof coating is a two-component reaction-curing synthetic polymer waterproof coating. Material A is generally a polyurethane prepolymer obtained by polycondensation reaction of polyether and isocyanate, and component B is composed of fillers, Composed of curing agent and filler, it needs to be added and stirred evenly in a certain proportion when using, which cannot meet the multi-functional use

Method used

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  • Polyurethane waterproof coating and preparation method thereof, and two-component polyurethane waterproof coating and preparation method thereof
  • Polyurethane waterproof coating and preparation method thereof, and two-component polyurethane waterproof coating and preparation method thereof
  • Polyurethane waterproof coating and preparation method thereof, and two-component polyurethane waterproof coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A kind of polyurethane waterproof coating of the present application, comprises the component of following parts by weight:

[0023] 5 parts of plasticizer, 5 parts of filler oil, 20 parts of polyether polyol A, 10 parts of polyether polyol C, 10 parts of diphenylmethane diisocyanate, 20 parts of 800 mesh heavy calcium, 25 parts of 600 mesh talcum powder, 400 mesh 15 parts of heavy calcium, 0.1 part of defoamer, 0.1 part of dispersant, 0.1 part of catalyst, 4 parts of solvent naphtha, 0.5 part of curing agent; wherein, the number average molecular weight of polyether polyol A is 3000 Da, and that of polyether polyol C The number average molecular weight is 1000 Da.

Embodiment 2

[0025] A kind of polyurethane waterproof coating of the present application, comprises the component of following parts by weight:

[0026] 7 parts of plasticizer, 7 parts of filler oil, 23 parts of polyether polyol A, 7 parts of polyether polyol C, 7 parts of diphenylmethane diisocyanate, 17 parts of 800 mesh heavy calcium, 23 parts of 600 mesh talcum powder, 400 mesh 13 parts of heavy calcium, 0.6 part of defoamer, 0.6 part of dispersant, 0.6 part of catalyst, 6 parts of solvent oil, and 0.7 part of curing agent; wherein, the number average molecular weight of polyether polyol A is 4000 Da, and that of polyether polyol C The number average molecular weight is 2000 Da.

Embodiment 3

[0028] A kind of polyurethane waterproof coating of the present application, comprises the component of following parts by weight:

[0029] 10 parts of plasticizer, 10 parts of filler oil, 25 parts of polyether polyol A, 5 parts of polyether polyol C, 5 parts of diphenylmethane diisocyanate, 15 parts of 800 mesh heavy calcium, 20 parts of 600 mesh talcum powder, 400 mesh 10 parts of heavy calcium, 1 part of defoamer, 1 part of dispersant, 1 part of catalyst, 8 parts of solvent oil, and 1 part of curing agent; wherein, the number average molecular weight of polyether polyol A is 6000 Da, and that of polyether polyol C The number average molecular weight is 3000 Da.

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Abstract

The invention discloses a polyurethane waterproof coating and a preparation method thereof, and a two-component polyurethane waterproof coating and a preparation method thereof. The two-component polyurethane waterproof coating comprises a material A and a material B. The material A is prepared from the following components in parts by weight: 10 to 15 parts of a plasticizer, 5 to 10 parts of filling oil, 45 to 55 parts of polyether polyol A, 10 to 20 parts of polyether polyol B, 15 to 20 parts of diphenylmethane diisocyanate, 0.1 to 1 part of a catalyst and 5 to 8 parts of solvent oil. The material B comprises the following components in parts by weight: 5-10 parts of a plasticizer, 5-10 parts of extending oil, 20-25 parts of polyether polyol A, 5-10 parts of polyether polyol C, 5-10 parts of diphenylmethane diisocyanate, 15-20 parts of 800-mesh coarse whiting, 20-25 parts of 600-mesh talcum powder, 10-15 parts of 400-mesh coarse whiting, a defoaming agent, a dispersing agent, a catalyst, solvent oil and a curing agent. A mass ratio of the material A to the material B is 1: (2-4). According to the invention, various functions can be realized.

Description

technical field [0001] The application relates to waterproof coatings and their preparation techniques, in particular to polyurethane waterproof coatings and their preparation methods, and two-component polyurethane waterproof coatings and their preparation methods. Background technique [0002] Polyurethane waterproof coating is a chemical reaction type waterproof coating. After curing, it is a rubber-like high-elastic coating film. The coating film is seamless as a whole. Because of its excellent comprehensive performance, it is called "liquid coil" by the industry. It is widely used in the interior, especially suitable for waterproofing of special-shaped parts. According to its composition and curing mechanism, polyurethane waterproof coatings can be divided into two categories: one-component polyurethane waterproof coatings and two-component polyurethane waterproof coatings. Two-component polyurethane waterproof coatings are widely used because of their dense coating fi...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/61
CPCC09D175/08C09D7/61C08K2003/265C08K2201/003C08K3/26C08K3/34
Inventor 曾心赵文炳
Owner 四川省飞翎防水科技有限公司
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