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High weather resistant polyurethane adhesive

A polyurethane and adhesive technology, used in polyurea/polyurethane adhesives, non-polymer adhesive additives, adhesives, etc., can solve the problems of poor adhesion, limited weather resistance, and long curing cycle of silicone rubber. Achieve the effect of breaking the poor weather resistance, good weather resistance and high reliability performance

Inactive Publication Date: 2019-03-26
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the adhesives used for bonding and fixing power batteries are mainly polyurethane adhesives and silicone rubber. However, due to the long curing period of silicone rubber and poor adhesion, the direction of polyurethane has become the research direction of many researchers; however, polyurethane Weather resistance limits its use to some extent

Method used

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  • High weather resistant polyurethane adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The A component consists of the following raw materials in parts by mass:

[0037] Polyurethane prepolymer: 70 parts;

[0038] YS-B09S-1050D: 30 copies;

[0039] The B component consists of the following raw materials in parts by mass:

[0040] Sovermol1092: 20 parts;

[0041] AF4330: 5;

[0042] The polyester diol of bulky side chain modification: 20 parts;

[0043] A-Link599: 1 copy;

[0044] 8184: 20 copies;

[0045] D405; 25 parts

[0046] Polycarbodiimide: 5 parts;

[0047] R202: 4 copies;

[0048] BiCAT8118: 0.1 part

[0049] (1) Preparation of polyurethane prepolymer: in parts by mass: Add 45.2 parts of 3190 produced by Croda into the reactor, dehydrate for 2.5 hours at 120°C and a vacuum of 0.08~0.1MPa, and cool down to After 60°C, add 54.8 parts of diphenylmethane diisocyanate into the reactor, then raise the temperature to 80°C to react until the mass percentage of -NCO ions is 14%, and obtain a polyurethane prepolymer;

[0050] (2) Preparation of c...

Embodiment 2

[0055] The A component consists of the following raw materials in parts by mass:

[0056] Polyurethane prepolymer: 80 parts;

[0057] YS-B09S-1050D: 20 copies;

[0058] The B component consists of the following raw materials in parts by mass:

[0059] Sovermol815: 22 parts;

[0060] P202: 20 copies;

[0061] XCP-488: 15 copies;

[0062] Sliquest*15744: 0.5 copies;

[0063] YS-B09S-1050D: 17 copies;

[0064] T805; 20 parts

[0065] Polycarbodiimide: 3 parts;

[0066] R202: 2.5 parts;

[0067] BiCAT8: 0.05 copies

[0068](1) Preparation of polyurethane prepolymer: in parts by mass: Add 45.2 parts of 3190 produced by Croda into the reactor, dehydrate for 2.5 hours at 120°C and a vacuum of 0.08~0.1MPa, and cool down to After 60°C, add 54.8 parts of diphenylmethane diisocyanate into the reactor, then raise the temperature to 80°C to react until the mass percentage of -NCO ions is 14%, and obtain a polyurethane prepolymer;

[0069] (2) Preparation of component A: Take 80 ...

Embodiment 3

[0074] The A component consists of the following raw materials in parts by mass:

[0075] Polyurethane prepolymer: 73 parts;

[0076] YS-B09S-1050D: 27 copies;

[0077] The B component consists of the following raw materials in parts by mass:

[0078] Sovermol1092: 17 parts;

[0079] AP11: 13 copies;

[0080] Sovermol815: 6 parts;

[0081] XCP-488: 18 copies;

[0082] Sliquest*15744: 1 copy;

[0083] YS-B09S-1050D: 17 copies;

[0084] T805; 20 parts

[0085] Polycarbodiimide: 4 parts;

[0086] R202: 3 copies;

[0087] BiCATZ: 0.05 copies

[0088] BiCAT8: 0.05 copies

[0089] (1) Preparation of polyurethane prepolymer: in parts by mass: Add 45.2 parts of 3190 produced by Croda into the reactor, dehydrate for 2.5 hours at 120°C and a vacuum of 0.08~0.1MPa, and cool down to After 60°C, add 54.8 parts of diphenylmethane diisocyanate into the reactor, then raise the temperature to 80°C to react until the mass percentage of -NCO ions is 14%, and obtain a polyurethane pre...

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Abstract

The invention relates to a high weather resistant polyurethane adhesive. The adhesive is prepared from the following components: 70-80 parts of polyurethane prepolymer, 20-30 parts of flame retardant,25-42 parts of fat based polyol, 15-20 parts of bulky side chain modified polyester diol, 0.5-1 part of adhesion promoter, 17-20 parts of flame retardant, 20-25 parts of calcium powder, 2.5-4 parts of gaseous silicon, 0.05-0.1 part of a catalyst and 3-5 parts of polycarbodiimide. The high weather resistant polyurethane adhesive has low modulus and excellent adhesion performance on various materials, has the shearing strength on a PET film being more than 7MPa, the shearing strength on unprocessed AL being more than 13MPa, the shearing strength on PA being more than 7MPa, the shearing strengthon PC being more than 8MPa and the shearing strength on ABS being more than 8MPa; and the strength retention rate of the high weather resistant polyurethane adhesive is more than or equal to 90 percent after aging treatment at the temperature of 85 DEG C and humidity of 85 percent for 1000 hours and 200 circulation at negative 40-100 DEG C (2h / cycle).

Description

technical field [0001] The invention relates to a highly weather-resistant polyurethane adhesive and a preparation method thereof, belonging to the technical field of polyurethane adhesives. Background technique [0002] With the development of economy and technology, environmental protection issues have become more and more important, because new energy vehicles can rely on clean energy such as solar and wind energy and are gradually replacing traditional gasoline-powered vehicles. The core of a power vehicle is the power battery. At present, the common materials that the power battery is in contact with are roughly the following types, such as PC, AL, PET, ABS, etc., so it is urgent to develop a material that can meet these materials at the same time. Adhesives to support the development of new energy vehicles. [0003] At present, the adhesives used for bonding and fixing power batteries are mainly polyurethane adhesives and silicone rubber. However, due to the long curi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C09J11/04
CPCC08K2003/023C08K2003/265C09J11/04C09J175/06C08K3/26C08K3/02
Inventor 刘志培王建斌陈田安解海华
Owner YANTAI DARBOND TECH
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