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Reactive polyurethane hot melt adhesive for reflective fabric and preparation method thereof

A polyurethane hot-melt adhesive, reactive technology, used in polyurea/polyurethane adhesives, adhesives, adhesive types, etc. Unsatisfactory performance and storage stability, poor metal bonding performance, etc., to achieve the effect of improving heat resistance, oxidation resistance, yellowing resistance, and good initial bonding strength

Active Publication Date: 2019-01-25
康达新材料(集团)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, at present, the reactive polyurethane hot melt adhesive body has a contradiction between strong initial bonding force and good flexibility (poor strength), and there is also a weak point of poor bonding performance to metals, and it is difficult to achieve solidified bonding strength and durability. There are also unsatisfactory places in washing performance, solvent resistance, temperature resistance and storage stability.

Method used

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  • Reactive polyurethane hot melt adhesive for reflective fabric and preparation method thereof
  • Reactive polyurethane hot melt adhesive for reflective fabric and preparation method thereof
  • Reactive polyurethane hot melt adhesive for reflective fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The preparation method of reactive polyurethane hot-melt adhesive for the reflective fabric of this embodiment, its steps are as follows:

[0054] 1) Get 40 parts by weight of amorphous polyester polyol, 25 parts by weight of crystalline polyester polyol, 10 parts by weight of polyether polyol, 3 parts by weight of polymer polyester, 2 parts by weight of adhesion promoter, 0.1 part by weight of anti- Add oxygen agent, 0.05 parts by weight of ultraviolet absorber, and 0.03 parts by weight of stabilizer into the reaction kettle, and vacuum dehydrate at 110-120 ° C for 60 minutes;

[0055] 2) Cool down to 80°C, and add 19 parts by weight of isocyanate while stirring;

[0056] 3) Slowly heat up to 100-120°C, vacuum defoaming reaction for 60 minutes;

[0057] 4) Cool down to 90°C, add 0.02 parts by weight of catalyst and 0.8 parts by weight of silane coupling agent, then heat up, vacuumize at 100-120°C until no bubbles appear, and test viscosity and NCO%;

[0058] 5) After...

Embodiment 2

[0086] The preparation method of reactive polyurethane hot-melt adhesive for the reflective fabric of this embodiment, its steps are as follows:

[0087] 1) Get 30 parts by weight of amorphous polyester polyol, 30 parts by weight of crystalline polyester polyol, 15 parts by weight of polyether polyol, 2 parts by weight of polymer polyester, 1 part by weight of adhesion promoter, 0.1 part by weight of anti- Add oxygen agent, 0.05 parts by weight of ultraviolet absorber, and 0.03 parts by weight of stabilizer into the reaction kettle, and vacuum dehydrate at 110-120 ° C for 60 minutes;

[0088] 2) Cool down to 80°C, and add 21 parts by weight of isocyanate while stirring;

[0089] 3) Slowly heat up to 100-120°C, vacuum defoaming reaction for 60 minutes;

[0090] 4) Cool down to 90°C, add 0.02 parts by weight of catalyst and 0.8 parts by weight of silane coupling agent, then heat up, vacuumize at 100-120°C until no bubbles appear, and test viscosity and NCO%;

[0091] 5) After ...

Embodiment 3

[0119] The preparation method of reactive polyurethane hot-melt adhesive for the reflective fabric of this embodiment, its steps are as follows:

[0120] 1) Get 25 parts by weight of amorphous polyester polyol, 25 parts by weight of crystalline polyester polyol, 15 parts by weight of polyether polyol, 3 parts by weight of chain extender, 2 parts by weight of polymer polyester, 1 part by weight of adhesion Accelerator, 0.1 weight part of antioxidant, 0.05 weight part of ultraviolet absorber, 0.03 weight part of stabilizer are added to the reaction kettle, and vacuum dehydration is carried out at 110-120 ° C for 60 minutes;

[0121] 2) Cool down to 80°C, and add 27 parts of isocyanate while stirring;

[0122] 3) Slowly heat up to 100-120°C, vacuum defoaming reaction for 60 minutes;

[0123] 4) Cool down to 90°C, add 0.02 parts by weight of catalyst and 0.8 parts by weight of silane coupling agent, then heat up, vacuumize at 100-120°C until no bubbles appear, and test viscosity ...

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Abstract

The invention discloses a reactive polyurethane hot melt adhesive for a reflective fabric. The reactive polyurethane hot melt adhesive is prepared from polyester polyol, polyether polyol, a chain extender, high polymer polyester, an adhesion promoter, an anti-oxidant, an ultraviolet ray absorber, a stabilizing agent, isocyanate, a catalyst and a silane coupling agent. The invention also discloses a preparation method for the reactive polyurethane hot melt adhesive used for the reflective fabric. The reactive polyurethane hot melt adhesive for the reflective fabric has high initial-stage strength, good soft handle, good washing performance, solvent resistance, heat resistance, storage stability and excellent environmental protection performance and is applicable to bonding of a variety of materials including a reflective material.

Description

technical field [0001] The invention relates to the technical field of polyurethane adhesive synthesis, in particular to a reactive polyurethane hot melt adhesive for reflective fabrics and a preparation method thereof. Background technique [0002] The reflective material base is made of base cloth / film, adhesive, reflective layer and bead layer by transfer method, and adhesive is the most important key basic raw material. Adhesives currently used are mainly solvent-based adhesives. Therefore, the development of reactive polyurethane hot melt adhesives on reflective fabrics can not only promote the common development of my country's reactive polyurethane hot melt adhesive industry and reflective material industry, but also have positive promotion significance for the progress of my country's traffic safety products and civil protection, and meet the requirements of The national policy of creating an energy-saving society requires implementing a low-carbon economy and streng...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/04C08G18/66
Inventor 从赫雷程瑶乔勇杰
Owner 康达新材料(集团)股份有限公司
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