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Silane end capping agent-modified two-component polyurethane waterproof coating and preparation method thereof

A two-component polyurethane and waterproof coating technology, applied in the field of coatings, can solve the problems of products losing waterproof effect, air pollution, and bubbles, and achieve the effect of environmental protection and bubbles affecting product performance

Active Publication Date: 2017-07-25
上海北新月皇新材料集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyurethane waterproof coatings have become one of the fastest-growing varieties in the global coatings industry in the past ten years due to their excellent product performance and processing diversity. In traditional two-component polyurethane waterproof coatings, component A is usually an excessive amount of polyisocyanate , and then mixed with component B to obtain polyurethane coatings, so that excess polyisocyanate will volatilize into the air to pollute the air, and excess polyisocyanate will react with water to generate carbon dioxide, which will cause air bubbles to affect the various properties of polyurethane coating products , in severe cases, the product may lose its waterproof effect

Method used

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  • Silane end capping agent-modified two-component polyurethane waterproof coating and preparation method thereof
  • Silane end capping agent-modified two-component polyurethane waterproof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A silane-blocking agent modified two-component polyurethane coating is divided into A component and B component:

[0044] Raw material formula of component A: 40% polyether polyol 2000, 35% polyether polyol 3000, 2% toluene diisocyanate, 17% 3-isocyanatopropyl triethoxysilane, 4% chlorinated paraffin-42.

[0045] B component raw material formula: 5% aromatic oil, 5% polyether polyol 2000, 3% polyether polyol 3000, 15% chlorinated paraffin-42, 45% heavy calcium, 15% talc, 1% iron brown, 3.6% plasticizer, 0.2% catalyst, 0.2% defoamer, 7% environmentally friendly solvent methyl ether acetate malonate.

[0046] Put the raw materials of component A and component B in the mixer in turn, then mix components A and B uniformly according to the mass ratio of 1:2, and solidify to form a film.

Embodiment 2

[0048] A silane-blocking agent modified two-component polyurethane coating is divided into A component and B component:

[0049] Raw material formula of component A: 35% polyether polyol 2000, 39% polyether polyol 3000, 2.5% toluene diisocyanate, 19% 3-isocyanatopropyl triethoxysilane, 4.5% chlorinated paraffin-42.

[0050] B component raw material formula: 7% aromatic oil, 3% polyether polyol 2000, 5% polyether polyol 3000, 18% chlorinated paraffin-42, 40% heavy calcium, 15% talc, 1% iron brown, 3.6% plasticizer, 0.2% catalyst, 0.2% defoamer, 7% environmentally friendly solvent methyl ether acetate malonate.

[0051]Put the raw materials of component A and component B in the mixer in turn, then mix components A and B uniformly according to the mass ratio of 1:2.5, and solidify to form a film.

Embodiment 3

[0053] A silane-blocking agent modified two-component polyurethane coating is divided into A component and B component:

[0054] Raw material formula of component A: 30% polyether polyol 2000, 45% polyether polyol 3000, 3% toluene diisocyanate, 20% 3-isocyanatopropyl triethoxysilane, 2% chlorinated paraffin-42.

[0055] B component raw material formula: 5% aromatic oil, 4% polyether polyol 2000, 4% polyether polyol 3000, 15% chlorinated paraffin-42, 40% heavy calcium, 20% talcum powder, 1% iron brown, 3.6% plasticizer, 0.2% catalyst, 0.2% defoamer, 7% environmentally friendly solvent methyl ether acetate malonate.

[0056] Put the raw materials of component A and component B in the mixer in turn, then mix components A and B uniformly according to the mass ratio of 1:2.5, and solidify to form a film.

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Abstract

The invention relates to a silane end capping agent-modified two-component polyurethane waterproof coating and a preparation method thereof. Raw materials comprises a component A and a component B. The component A is composed of polyether polyol having relative molecular mass of 2000, polyether polyol having relative molecular weight of 3000, polyisocyanate and a silane isocyanate end-capping agent. The component B is composed of polyether polyol having relative molecular mass of 2000, polyether polyol having relative molecular mass of 3000, chlorinated paraffin, aromatic hydrocarbon oil, a catalyst, a defoamer, a filler, a pigment, a plasticizer and an environmentally friendly solvent. Compared with the prior art, the preparation method does not produce bubbles, does not produce polyisocyanate residues after the reaction, is environmentally friendly, has a fast curing rate and good film formation effects and does not produce pollution on the base and environment.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a two-component polyurethane waterproof coating modified by a silane end-capping agent and a preparation method thereof. Background technique [0002] Polyurethane waterproof coatings have become one of the fastest-growing varieties in the global coatings industry in the past ten years due to their excellent product performance and processing diversity. In traditional two-component polyurethane waterproof coatings, component A is usually an excessive amount of polyisocyanate , and then mixed with component B to obtain polyurethane coatings, so that excess polyisocyanate will volatilize into the air to pollute the air, and excess polyisocyanate will react with water to generate carbon dioxide, which will cause air bubbles to affect the various properties of polyurethane coating products In severe cases, the product may lose its waterproof effect. [0003] Chinese patent CN104194...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/12C09D7/00C08G18/48C08G18/83
CPCC08G18/48C08G18/4808C08G18/837C08L2205/02C08L2205/025C08L2205/03C08L2205/035C09D7/20C09D7/63C09D7/65C09D175/08C08L91/06C08L91/00C08K13/02C08K2003/265C08K3/34C08K5/12
Inventor 王志鹏黎翠莲程先政李正爽李路
Owner 上海北新月皇新材料集团有限公司
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