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Moisture-curable polyurethane hot melt adhesive for automobile roof pendants and preparation method of the moisture-curable polyurethane hot melt adhesive

A polyurethane hot-melt adhesive and car roof technology, which is applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of poor stability of hot-melt adhesives, achieve adjustable opening time, low The effect of construction temperature and excellent high and low temperature cycle performance

Pending Publication Date: 2019-12-24
上海汉司实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hot melt adhesive has a low sizing temperature and has good adhesion to different substrates. However, the random polyolefin disclosed in the patent has compatibility problems with raw materials such as polyester, polyether, rosin resin, and petroleum resin. , may lead to poor stability of the hot melt adhesive

Method used

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  • Moisture-curable polyurethane hot melt adhesive for automobile roof pendants and preparation method of the moisture-curable polyurethane hot melt adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of moisture-curing polyurethane hot-melt adhesive for automobile ceiling pendant, including the following raw materials composed by weight: 10 parts of polyester polyol, 10 parts of polyether polyol, 5 parts of high molecular weight saturated polyester resin, terpene resin 5 parts, 8 parts of isocyanate, 0.1 part of antioxidant.

[0027] The polyester polyols are crystalline polyester diols and liquid polyester polyols with a molecular weight of 2000-8500, specifically Dynacoll 7360, Dynacoll 7361, Dynacoll 7380, Dynacoll 7381, XCP-2000B, Dynacoll 7230, Dynacoll 7210, Dynacoll One of 7250, Dynacoll 7231 or XCP-2000D.

[0028] The polyether polyol is polypropylene oxide diol with a molecular weight of 400.

[0029] The molecular weight range of the high-molecular-weight saturated polyester resin is 10,000-100,000, the softening point is -30-100° C., and the hydroxyl value is 1-11.

[0030] The terpene resin is a modified terpene resin. The softening point range...

Embodiment 2

[0037] A kind of moisture-curing polyurethane hot-melt adhesive for automobile ceiling pendant, including the following raw materials composed by weight: 30 parts of polyester polyol, 30 parts of polyether polyol, 10 parts of high molecular weight saturated polyester resin, terpene resin 25 parts, 15 parts of isocyanate, 0.5 part of antioxidant.

[0038] The polyester polyols are crystalline polyester diols and liquid polyester polyols with a molecular weight of 2000-8500, specifically Dynacoll 7360, Dynacoll 7361, Dynacoll 7380, Dynacoll 7381, XCP-2000B, Dynacoll 7230, Dynacoll 7210, Dynacoll One of 7250, Dynacoll 7231 or XCP-2000D.

[0039] The polyether polyol is polypropylene oxide diol with a molecular weight of 1000.

[0040] The molecular weight range of the high-molecular-weight saturated polyester resin is 10,000-100,000, the softening point is -30-100° C., and the hydroxyl value is 1-11.

[0041] The terpene resin is a modified terpene resin. The softening point r...

Embodiment 3

[0047] A kind of moisture-curing polyurethane hot-melt adhesive for automobile ceiling pendant, including the following raw materials composed by weight: 40 parts of polyester polyol, 50 parts of polyether polyol, 15 parts of high molecular weight saturated polyester resin, terpene resin 40 parts, 25 parts of isocyanate, 1 part of antioxidant.

[0048] The polyester polyols are crystalline polyester diols and liquid polyester polyols with a molecular weight of 2000-8500, specifically Dynacoll 7360, Dynacoll 7361, Dynacoll 7380, Dynacoll 7381, XCP-2000B, Dynacoll 7230, Dynacoll 7210, Dynacoll One of 7250, Dynacoll 7231 or XCP-2000D.

[0049] The polyether polyol is polypropylene oxide diol with a molecular weight of 2000.

[0050] The molecular weight range of the high-molecular-weight saturated polyester resin is 10,000-100,000, the softening point is -30-100° C., and the hydroxyl value is 1-11.

[0051] The terpene resin is a modified terpene resin. The softening point ran...

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Abstract

The invention discloses a moisture-curable polyurethane hot melt adhesive for automobile roof pendants. The moisture-curable polyurethane hot melt adhesive comprises the following raw materials in parts by weight: 10-40 parts of polyester polyol, 10-50 parts of polyether polyol, 5-15 parts of high-molecular-weight saturated polyester resin, 5-40 parts of terpene resin, 8-25 parts of isocyanate and0.1-1 part of an antioxidant. The embodiment of the invention further provides a preparation method of the moisture-curable polyurethane hot melt adhesive for the automobile ceiling pendants. The polyester polyol, the polyether polyol, the high-molecular-weight saturated polyester resin, the terpene resin, the isocyanate and the like are used as reaction raw materials to prepare the moisture-curable polyurethane hot melt adhesive for the automobile roof pendants. The polyurethane hot melt adhesive prepared by the invention has relatively high initial bonding strength and final bonding strength, adjustable opening time, relatively low construction temperature and excellent high-temperature and low-temperature cyclic resistance. The raw materials for preparing the polyurethane hot melt adhesive are simple, easy to obtain and low in cost.

Description

technical field [0001] The invention belongs to reactive polyurethane hot-melt adhesives, belongs to the technical field of polyurethane adhesives, and in particular relates to a moisture-curing polyurethane hot-melt adhesive for automobile ceiling pendants and a preparation method thereof. Background technique [0002] Moisture-curing polyurethane hot-melt adhesive is a solvent-free, reactive hot-melt adhesive containing terminal isocyanate groups, which achieves curing and bonding by reacting with moisture in the air. [0003] Moisture-curing polyurethane hot melt adhesive has a 100% solid content and is considered to be an excellent environmentally friendly adhesive. In recent years, moisture-curing polyurethane hot-melt adhesives have developed rapidly in China, and their application industries include woodworking, home furnishing, textiles, automobiles, and electronics. [0004] Chinese patent CN 108410410A discloses a moisture-curing polyurethane hot-melt adhesive for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J175/06C08G18/62C08G18/48C08G18/42
CPCC08G18/4018C08G18/4063C08G18/4202C08G18/4825C08G18/62C09J175/06C09J175/08
Inventor 黄先华林孝蔚吴海平向劲松
Owner 上海汉司实业有限公司
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