Polyisocyanate adhesive, and production method and production device thereof

A technology of polyisocyanate glue and production equipment, which is applied in the direction of mixing methods, chemical instruments and methods, polyurea/polyurethane adhesives, etc., and can solve problems such as low tensile strength, heavy odor, and short elongation at break

Active Publication Date: 2021-07-06
常熟市江南粘合剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Now polyisocyanate glue is designed for better use of isocyanate, but the existing polyisocyanate glue has a heavy odor and high toxicity. The use of polyisocyanate glue in nylon products makes nylon products low in tensile strength, high in brittleness, easy to break, and fracture elongation. The length is short and the bending strength cannot meet the requirements. At the same time, the material fluidity in the polyisocyanate rubber production device is poor, and the production efficiency is low.

Method used

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  • Polyisocyanate adhesive, and production method and production device thereof
  • Polyisocyanate adhesive, and production method and production device thereof
  • Polyisocyanate adhesive, and production method and production device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 As shown, a polyisocyanate glue is composed of the following parts by weight: 10 parts of polyphenyl polymethylene polyisocyanate, 277 parts of diisocyanate, 12 parts of hexamethylene diisocyanate, 6.5 parts of terpene resin Parts, 22 parts of ethyl acetate, 23 parts of methyl acetate and 11.5 parts of propylene glycol methyl ether acetate.

[0042] A kind of production method of polyisocyanate glue, production method step is as follows:

[0043] Step 1, polyphenyl polymethylene polyisocyanate, diisocyanate, hexamethylene diisocyanate and ethyl acetate are weighed in proportion and added to the first stirring tank, and the temperature in the first stirring tank is raised to 140 °C to Stir at a stirring speed of 400r / min for 7h to obtain the first mixed solution, and cool it to below 40°C for later use;

[0044] Step 2. Weigh the proportions of terpene resin, methyl acetate and propylene glycol methyl ether acetate and add them to the second stirring t...

Embodiment 2

[0047] A polyisocyanate glue, the polyisocyanate glue is composed of the following components in parts by weight: 8 parts of polyphenyl polymethylene polyisocyanate, 30 parts of diisocyanate, 15 parts of hexamethylene diisocyanate, 8.5 parts of terpene resin, acetic acid 25 parts of ethyl ester, 20 parts of methyl acetate and 13.5 parts of propylene glycol methyl ether acetate.

[0048] A kind of production method of polyisocyanate glue, production method step is as follows:

[0049] Step 1, polyphenyl polymethylene polyisocyanate, diisocyanate, hexamethylene diisocyanate and ethyl acetate are weighed in proportion and added to the first stirring tank, and the temperature in the first stirring tank is raised to 130 °C to Stir at a stirring speed of 400r / min for 6h to obtain the first mixed solution, and cool to below 40°C for later use;

[0050] Step 2. Weigh the proportions of terpene resin, methyl acetate and propylene glycol methyl ether acetate and add them to the second ...

Embodiment 3

[0053] A polyisocyanate glue, the polyisocyanate glue is composed of the following components in parts by weight: 12 parts of polyphenyl polymethylene polyisocyanate, 33 parts of diisocyanate, 18 parts of hexamethylene diisocyanate, 7.5 parts of terpene resin, acetic acid 28 parts of ethyl ester, 25 parts of methyl acetate and 15.5 parts of propylene glycol methyl ether acetate.

[0054] A kind of production method of polyisocyanate glue, production method step is as follows:

[0055] Step 1, polyphenyl polymethylene polyisocyanate, diisocyanate, hexamethylene diisocyanate and ethyl acetate are weighed in proportion and added to the first stirring tank, and the temperature in the first stirring tank is raised to 130 °C to Stir at a stirring speed of 400r / min for 6h to obtain the first mixed solution, and cool to below 40°C for later use;

[0056] Step 2. Weigh the proportions of terpene resin, methyl acetate and propylene glycol methyl ether acetate and add them into the seco...

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Abstract

The invention discloses a polyisocyanate adhesive, and a production method and a production device thereof, and relates to the technical field of adhesives. The polyisocyanate adhesive is prepared from, by weight, 8 to 12 parts of polyphenyl polymethylene polyisocyanate, 27 to 33 parts of diisocyanate, 12 to 18 parts of hexamethylene diisocyanate, 6.5 to 8.5 parts of terpene resin, 22 to 28 parts of ethyl acetate, 20 to 25 parts of methyl acetate and 11.5 to 15.5 parts of propylene glycol methyl ether acetate. The environment-friendly solvent is used for replacing chlorobenzene and the isocyanate is used for replacing a high-toxicity raw material TDI, so that the odor and toxicity of the glue are reduced, the elongation at break, the tensile strength and the bending strength of the polyisocyanate glue are improved, and related technical requirements and safety performance of the high-speed rail industry are met.

Description

technical field [0001] The invention relates to adhesive technology, in particular to a polyisocyanate adhesive, a production method and a production device thereof. Background technique [0002] Isocyanate is a general term for various esters of isocyanic acid, used in home appliances, automobiles, construction, footwear, furniture, adhesives and other industries. If classified by the number of -NCO groups, it includes monoisocyanate R-N=C=O, diisocyanate O=C=N-R-N=C=O and polyisocyanate. Common diisocyanates include toluene diisocyanate (TDI), isophorone diisocyanate (IPDI), diphenylmethane diisocyanate (MDI), dicyclohexylmethane diisocyanate (HMDI), hexamethylene diisocyanate (HDI ), Lysine diisocyanate (LDI). [0003] Now polyisocyanate glue is designed for better use of isocyanate, but the existing polyisocyanate glue has a heavy odor and high toxicity. The use of polyisocyanate glue in nylon products makes nylon products low in tensile strength, high in brittleness, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C09J11/08C08G18/02B01F7/18B01F15/02B01F3/08
CPCC09J175/04C09J11/08C08G18/02B01F23/405B01F23/43B01F27/191B01F27/90B01F35/71B01F2101/36C08L45/00Y02P20/141
Inventor 龚国祥陆瑞明
Owner 常熟市江南粘合剂有限公司
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