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Self-adhesive polyurethane gel composite material and preparation method thereof

A technology of polyurethane gel and combined materials, which is applied in the field of self-adhesive polyurethane gel combined materials, which can solve the problems of weakened self-adhesiveness, inability to attach, cumbersome processing technology, etc., and achieve stable surface hardness, good surface viscosity, and adhesion powerful effect

Active Publication Date: 2019-09-06
SHENZHEN LIXIN LUNAN RUBBER & PLASTIC HARDWARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The performance of the self-adhesive materials currently on the market is poor, the use effect is not ideal, it is easy to fall off or cannot be attached to the surface of smooth objects such as ceramics; or the self-adhesiveness is greatly weakened after encountering dust, and the processing technology is not only cumbersome, not environmentally friendly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The self-adhesive polyurethane gel composite material provided by the invention comprises the following raw materials in parts by weight:

[0037] Trimer 60 parts

[0038] Hardener 2 parts

[0039] 2 parts plasticizer;

[0040] Trimers are trimers including polyols, HDI: hexamethylene diisocyanate and MDI: diphenylmethane diisocyanate.

[0041] The mass ratio of polyol, hexamethylene diisocyanate and diphenylmethane diisocyanate is: 0.1:0.1:2.

[0042] The molecular weight of the polyol is 3000.

[0043] The processing technology of self-adhesive polyurethane gel composite material comprises the following steps:

[0044] 1) Heat the polyol to 50°, add MDI to react for 20 minutes; then add HDI, control the temperature at 70°C, and react for 3.5 hours; leave it for 20 hours, it will cool naturally, and the production of trimer is completed;

[0045] 2) Mix the three liquid substances of the trimer, the curing agent and the plasticizer, stir them, and introduce them i...

Embodiment 2

[0048] The self-adhesive polyurethane gel composite material provided by the invention comprises the following raw materials in parts by weight:

[0049] Trimer 100 parts

[0050] Curing agent 20 parts

[0051] 25 parts of plasticizer;

[0052] Trimers are trimers including polyols, HDI: hexamethylene diisocyanate and MDI: diphenylmethane diisocyanate.

[0053] The mass ratio of polyol, hexamethylene diisocyanate and diphenylmethane diisocyanate is: 1.5:0.1:0.1.

[0054] The molecular weight of the polyol is 6000.

[0055] The processing technology of self-adhesive polyurethane gel composite material comprises the following steps:

[0056] 1) Heat the polyol to 70°, add MDI to react for 40 minutes; then add HDI, control the temperature at 85°C, and react for 3.5 hours; leave it for 48 hours, it will cool naturally, and complete the production of trimer;

[0057] 2) Mix the three liquid substances of the trimer, the curing agent and the plasticizer, stir them, and introduc...

Embodiment 3

[0060] The self-adhesive polyurethane gel composite material provided by the invention comprises the following raw materials in parts by weight:

[0061] Trimer 70 parts

[0062] Curing agent 10 parts

[0063] 12 parts of plasticizer;

[0064] Trimers are trimers including polyols, HDI: hexamethylene diisocyanate and MDI: diphenylmethane diisocyanate.

[0065] The mass ratio of polyol, hexamethylene diisocyanate and diphenylmethane diisocyanate is 1:1:1.

[0066] The molecular weight of the polyol is 5000.

[0067] The processing technology of self-adhesive polyurethane gel composite material comprises the following steps:

[0068] 1) Heat the polyol to 60°, add MDI to react for 30 minutes; then add HDI, control the temperature at 75°C, and react for 3.5 hours; leave it for 30 hours, it will cool naturally, and complete the production of trimer;

[0069] 2) Mix the three liquid substances of the trimer, the curing agent and the plasticizer, stir them, and introduce them i...

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Abstract

The invention discloses a self-adhesive polyurethane gel composite material. The self-adhesive polyurethane gel composite material is prepared from the following raw materials in parts by weight: 60 to 100 parts of a tripolymer, 2 to 20 parts of a curing agent and 2 to 25 parts of a plasticizer; the tripolymer is obtained by taking polyol, hexamethylene diisocyanate HDI and diphenyl-methane-diisocyanate MDI to react. The material is environment-friendly and has a high attaching property. The invention further provides a machining process of the self-adhesive polyurethane gel composite material; the machining process comprises the following steps: (1) heating the polyol, which is taken in parts by weight, to 50 DEG C to 70 DEG C; adding the diphenyl-methane-diisocyanate MDI, which is taken in parts by weight, to react for 20 minutes to 40 minutes; then adding the hexamethylene diisocyanate HDI which is taken in parts by weight; controlling the temperature to be 70 DEG C to 85 DEG C and reacting for 3 hours to 5 hours; standing for 20 hours to 48 hours and naturally cooling to finish the production of the tripolymer; (2) mixing three types of liquid-state substances including the tripolymer prepared by the step (1), and the curing agent and the plasticizer which are taken in parts by weight and stirring; leading a mixture into a mold, and heating and molding, wherein the temperature is selected in a range from 100 DEG C to 150 DEG C.

Description

technical field [0001] The invention relates to a self-adhesive polyurethane gel composite material. Background technique [0002] The performance of the self-adhesive materials currently on the market is poor, the use effect is not ideal, it is easy to fall off or cannot be attached to the surface of smooth objects such as ceramics; or the self-adhesiveness is greatly weakened after encountering dust, and the processing technology is not only cumbersome, Not environmentally friendly enough. Contents of the invention [0003] The technical problem to be solved by the invention is to provide a self-adhesive polyurethane gel composite material, which is environmentally friendly and has strong adhesion performance. [0004] The self-adhesive polyurethane gel composite material provided by the invention comprises the following raw materials in parts by weight: [0005] Trimer 60-100 parts [0006] Curing agent 2-20 parts [0007] 2-25 parts of plasticizer; [0008] The tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/73C08G18/76C08G18/65C08G18/40C08G18/32C08G18/10C08L75/04
Inventor 向欢
Owner SHENZHEN LIXIN LUNAN RUBBER & PLASTIC HARDWARE
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