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Moisture curable polyurethane adhesive and preparation method thereof

A polyurethane adhesive, moisture-curing technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problem of low curing rate, low body strength, affecting the application effect or ergonomics of one-component polyurethane adhesives and other problems, to achieve the effect of high curing rate, bulk strength and high elongation

Inactive Publication Date: 2011-06-29
GUANGXI NANNING QISHUN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the one-component polyurethane adhesive is bonded, its body strength is low or the elongation rate is low, and the curing rate is low, which affects the application effect or work efficiency of the one-component polyurethane adhesive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) formula component and parts by weight are:

[0019] 67.0 parts of polyether polyol (M=2800), 6.7 parts of terpene phenolic resin, 0.13 parts of stannous octoate, 0.67 parts of dibutyltin dilaurate, 3.3 parts of a mixture of crosslinking agents MDI and TDI, 16.7 parts of talc, kaolin 6 copies and appropriate amount of color paste.

[0020] (2) Preparation method:

[0021] First add diphenylmethane diisocyanate (MDI) and toluene diisocyanate (TDI), stannous octoate, talcum powder and hydrocarbon solvent into the reaction kettle, stir and mix, control the temperature to 40°C, and the time is 60 minutes to prepare the mixture for later use; Put polyether polyol, terpene phenolic resin, dibutyltin dilaurate and kaolin into the reaction kettle, stir and mix, control the temperature at 40°C, and make the prepolymer for 60 minutes; in the prepolymer, control the temperature as Stir at 40°C, slowly add the mixture within 3 hours, and add an appropriate amount of color past...

Embodiment 2

[0023] (1) formula component and parts by weight are:

[0024] 66 parts of polyether polyol (M=2800), 6.6 parts of terpene phenolic resin, 0.12 part of stannous octoate, 0.66 part of dibutyltin dilaurate, parts of crosslinking agent MDI and TDI, 3 parts of hydrocarbon solvent, talcum powder 16 parts, 5 parts of kaolin and appropriate amount of color paste.

[0025] (2) Preparation method:

[0026] First add diphenylmethane diisocyanate (MDI) and toluene diisocyanate (TDI), stannous octoate, talcum powder and hydrocarbon solvent into the reaction kettle, stir and mix, control the temperature to 40°C, and the time is 50 minutes to prepare the mixture for later use; Put polyether polyol, terpene phenolic resin, dibutyltin dilaurate and kaolin into the reaction kettle, stir and mix, control the temperature at 40°C, and make the prepolymer for 55 minutes; in the prepolymer, control the temperature as Stir at 40°C, slowly add the mixture within 3 hours, and add an appropriate amou...

Embodiment 3

[0028] (1) formula component and parts by weight are:

[0029] 68 parts of polyether polyol (M=2800), 6.8 parts of terpene phenolic resin, 0.14 parts of stannous octoate, 0.68 parts of dibutyltin dilaurate, crosslinking agents MDI and TDI, 3.6 parts of hydrocarbon solvents, 17 parts of talcum powder , 7 parts of kaolin and appropriate amount of color paste.

[0030] (2) Preparation method:

[0031] First add diphenylmethane diisocyanate (MDI) and toluene diisocyanate (TDI), stannous octoate, talcum powder and hydrocarbon solvent into the reaction kettle, stir and mix, control the temperature to 40°C, and the time is 65 minutes to prepare the mixture for later use; Put polyether polyol, terpene phenolic resin, dibutyltin dilaurate and kaolin into the reaction kettle, stir and mix, control the temperature at 40°C, and prepare the prepolymer for 70 minutes; in the prepolymer, control the temperature as Stir at 40°C, slowly add the mixture within 3 hours, and add an appropriate ...

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Abstract

The invention relates to a moisture curable polyurethane adhesive and a preparation method thereof. The adhesive adopts polyether polyol, polyterpene phenolic resin and dibutyltin dilaurate for preparing a prepolymer; a cross-linking agent, a filler and color paste are added for preparing the polyurethane adhesive, the polyurethane adhesive comprises the following components in parts by weight: 66-68 parts of the polyether polyol (M is equal to 2800), 6.6-6.8 parts of the polyterpene phenolic resin, 0.12-0.14 part of stannous octoate, 0.66-0.68 part of the dibutyltin dilaurate, 3.0-3.6 parts of the cross-linking agent, 22.0-23.0 parts of the filler and an appropriate amount of the color paste, and the adhesive is obtained by reaction. After the adhesive is cured, the strength and the elongation rate of a body are higher, and the adhesive has high curing rate at low temperature. The adhesive is applicable to elastic adhesion under environments with high and low temperature, high and low humidity, high mechanical properties and the like, such as the adhesion of metal, wood, stone and the like, and is particularly applicable to toilets and kitchens for use.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to a moisture-curable polyurethane adhesive used for elastic bonding of metals, pottery, stone and wooden villages and a preparation method thereof. Background technique [0002] Adhesives are materials used to fill gaps such as holes, joints, seams, etc., and have a bonding effect on the interface of the filled base. It mainly includes: silicone (including modified silicone), polyhydrogen ester, polysulfide rubber , Acrylic esters, SBR rubber, butyl rubber, asphalt, oily caulk, etc. Elastic adhesives must be used to fill gaps that are stretchable due to vibration or thermal expansion and contraction. Elastic adhesives are products that combine the functions of bonding and sealing. Among them, the three types of high-grade elastic adhesives with better performance are silicone adhesives, polysulfide sealants and polyurethane adhesives. In recent years, elastic adhesives ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08
Inventor 张小帆
Owner GUANGXI NANNING QISHUN CHEM
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