Polyurethane adhesive and preparation method thereof

A technology of polyurethane adhesive and polycaprolactone, which is applied in polyurea/polyurethane coatings, applications, coatings, etc., can solve problems such as leakage, glass bricks and adhesive quality that cannot meet technical requirements, and improve anti-corrosion durability , good mechanical properties and acid corrosion resistance, simple preparation method

Pending Publication Date: 2020-10-23
SHENZHEN ANPIN SILICONE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, domestic power plant chimneys mostly use waste glass foam glass bricks for wet chimney anticorrosion, but about 80% will leak within one year, the main reason is that the quality of glass bricks and adhesives cannot meet the technical requirements

Method used

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  • Polyurethane adhesive and preparation method thereof
  • Polyurethane adhesive and preparation method thereof
  • Polyurethane adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The polyurethane adhesive includes A component and B component, and the preparation method is as follows:

[0035] Mix 40kg of hydroxyl-terminated polybutadiene (HTPBШ type, Liming Institute of Chemical Industry, hydroxyl value 38mgKOH / g, molecular weight 1800-3500) and 15kg of quartz powder (604, Sibelco Mining Co., Ltd., with an average particle size (D50) of 15 μm ) into the stirring device for 15 minutes, add 2kg antioxidant Irganox 1010, 2kg chain extender Span80 (Guangdong Runhua Chemical Co., Ltd., hydroxyl value 200mgKOH / g), 5kg EPDM rubber (EV-30, Dongguan Junsong Plastic, molecular weight 45000, 25 ℃ dynamic viscosity value is 200000cps), 10kg polyisobutylene (PB4000, Daelim, South Korea, molecular weight 4000) was mixed for 15 minutes to obtain a premix; 7kg corrosion-resistant filler barium sulfate (XLT-3, Guizhou Xin Rio Tinto Mining Co., Ltd., 600 mesh) mixed with 18kg polycaprolactone diol (L330AL, Japan Chemical Industry Co., Ltd. Daicel, 3000 molecular ...

Embodiment 2

[0037] The polyurethane adhesive includes A component and B component, and the preparation method is as follows:

[0038]Mix 10kg of hydroxyl-terminated polybutadiene (HTPBШ type, Liming Institute of Chemical Industry, hydroxyl value 38mgKOH / g, molecular weight 1800-3500) and 30kg of silica powder (604, Sibelco Mining Co., Ltd., particle size (D50) is 15μm) Put into stirring device and mix for 15 minutes, add 2kg antioxidant Irganox 1010, 2kg Span80 (Guangdong Runhua Chemical Co., Ltd., hydroxyl value 200mgKOH / g), 3kg 1,4-butanediol (BASF), 5kg polybutene (Jilin Petrochemical, molecular weight 4000), 15kg polyisobutene (Jilin Petrochemical, molecular weight 3000) and mixed for 15 minutes to obtain a premix; 25kg silicon micropowder (604, Sibelco Mining Co., Ltd.) and 5kg polycaprolactone diol (CAPA2200 , Swedish Perstorp Group Company, molecular weight 2000, hydroxyl value 56mgKOH / g) mixed and heated up to 70°C, then mixed with the premix, stirred at high speed and vacuumed to...

Embodiment 3

[0040] The polyurethane adhesive includes A component and B component, and the preparation method is as follows:

[0041] 25kg of hydroxyl-terminated polybutadiene (HTPB Poly bd R-45HT, Japan Idemitsu Kosan Co., Ltd., molecular weight 2800, hydroxyl value 46mgKOH / g) and 30kg of silicon micropowder (604, Sibelco Mining Co., Ltd., particle size (D50 ) is 15 μm) was put into the stirring device and mixed for 15 minutes, 3kg of antioxidant Irganox 1010, 1kg of chain extender 1,4-butanediol (Tianjin Zhonghe Shengtai Chemical Co., Ltd.), 2kg of Span80 (Guangdong Runhua Chemical Co., Ltd., hydroxyl Value 200mgKOH / g), 3kg EPDM rubber (CP-1100, Sumitomo, Japan, molecular weight 12000, viscosity 22500cst at 40°C), 5kg polyisobutylene (PB2400, Daelim, South Korea, molecular weight 2400, viscosity 4500cps at 100°C) and mixed for 15 14kg corrosion-resistant filler barium sulfate (XLT-3, Guizhou New Rio Tinto Mining Co., Ltd., 600 orders) and 9kg polycaprolactone diol (CAPA2200, Sweden Pers...

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Abstract

The invention belongs to the technical field of adhesive materials, and discloses an acid-resistant corrosion-resistant polyurethane adhesive, which is prepared by the following steps: mixing hydroxyl-terminated liquid rubber with part of a corrosion-resistant filler, adding an antioxidant, a chain extender and polyolefin, and uniformly mixing to obtain a premix; mixing the residual corrosion-resistant filler with polyester polyol, heating, mixing with the premix under a vacuumizing condition, adding a water absorbent, sealing and discharging to obtain a component A; and sub-packaging a polyisocyanate curing agent to obtain the component B. The adhesive disclosed by the invention has good mechanical properties and acid corrosion resistance after being cured, and the preparation method of the product is simple.

Description

technical field [0001] The invention relates to an adhesive material, in particular to a polyurethane adhesive used for anticorrosion, especially chimney anticorrosion and a preparation method thereof. Background technique [0002] At present, domestic power plant chimneys mostly use waste glass foam glass bricks for wet chimney anticorrosion, but about 80% will leak within one year, mainly because the quality of glass bricks and adhesives cannot meet the technical requirements. The anti-corrosion conditions of wet chimneys are harsh, including: the concentration of acid solution is high, and the pH value of the actual extracted acid solution sample is close to 1; in places where fluid is easy to accumulate, as the water in the acid solution volatilizes, the concentration increases; the acid solution The composition is complex, containing sulfuric acid, and also contains trace amounts of nitric acid, hydrochloric acid and hydrofluoric acid, which are very corrosive to materi...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D123/16C09D123/20C09D11/04C08G18/76C08G18/69C08G18/65C08G18/42C08G18/32
CPCC08G18/3206C08G18/4202C08G18/4238C08G18/4277C08G18/6588C08G18/69C08G18/7664C08K2003/3045C08K2201/005C08L2205/03C08L2205/035C09D11/04C09D175/14C08L23/22C08L23/20C08K3/36C08L23/16C08K3/30
Inventor 王超马玉珍刘奇明余栋才游正林苏剑
Owner SHENZHEN ANPIN SILICONE MATERIAL
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