Two-component polyurethane adhesive and preparation method thereof

A two-component polyurethane and adhesive technology, applied in the direction of polyurea/polyurethane adhesive, adhesive, adhesive type, etc., can solve the problems of lower production efficiency, complicated process, time-consuming, etc., and achieve high bonding shear strength , low mixing viscosity, good fluidity and wettability

Active Publication Date: 2021-04-30
湖北南北车新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of multiple pouring is complicated and time-consuming, which seriously reduces the production efficiency

Method used

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  • Two-component polyurethane adhesive and preparation method thereof
  • Two-component polyurethane adhesive and preparation method thereof
  • Two-component polyurethane adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This embodiment provides a preparation method of a two-component polyurethane adhesive, comprising the following steps:

[0040] Preparation of component A: In parts by weight, add 72 parts of primary refined castor oil (hydroxyl value 164mgKOH / g), 10 parts T-400 and 6 parts of hydroxyl-terminated polybutadiene Polybd R45V, 11 parts of dipropylene glycol were heated to 120 ° C, and stirred and dehydrated under vacuum for 2 hours, then cooled to 60 ° C, and then 0.59 parts of defoamer BYK6880, 0.01 1 part of wetting agent BYK307, 0.3 part of 3A molecular sieve, 0.1 part of fumed silica HDK H15, stirred for 1 hour in a vacuum state and discharged to prepare component A.

[0041] Preparation of component B: respectively add 67.5 parts of isocyanate CDMDI100L and 6.7 parts of isocyanate Suprasec 1004 into the reactor, continuously feed nitrogen, add dropwise 5.8 parts of bisphenol A polyether polyol BSA-30F, after the addition is completed, the temperature at 80±2 React a...

Embodiment 2

[0044] This embodiment provides a preparation method of a two-component polyurethane adhesive, comprising the following steps:

[0045] Preparation of component A: In parts by weight, add 61.5 parts of primary refined castor oil (hydroxyl value 164mgKOH / g), 10 parts of A30 castor oil modified polyol and 15 parts of hydrogenated hydroxyl-terminated polybutadiene polyol into the reactor Cray HLBH-P2000, 10 parts of 1,4-butanediol was heated to 120°C, stirred and dehydrated under vacuum for 2 hours, then cooled to 60°C, and then 0.5 parts of defoamer BYK067A, 0.2 parts of wetting agent TEGO- 4100, 1.5 parts of 4A molecular sieves, 0.3 parts of fumed silica AEROSIL R972, stirred for 1 hour in a vacuum state and discharged to obtain component A.

[0046] Preparation of component B: respectively add 63 parts of isocyanate MDI and 7 parts of isocyanate MDI-50 into the reactor, continuously feed nitrogen, add 5 parts of bisphenol A polyether polyol BSA-30F dropwise, after the additi...

Embodiment 3

[0049] This embodiment provides a preparation method of a two-component polyurethane adhesive, comprising the following steps:

[0050] Preparation of component A: in parts by weight, add 75 parts of primary refined castor oil (hydroxyl value 164mgKOH / g), 5 parts T-400 (hydroxyl value 450mgKOH / g) and 9.5 parts of hydroxyl-terminated polybutadiene polyol Cray LBH-P 2000, heat 7 parts of dipropylene glycol to 120°C, stir and dehydrate under vacuum for 2 hours, then cool down to 60°C, add 1 part of defoamer MOK6621, 0.2 parts of wetting agent TEGO-Wet265, 1.8 parts 3A molecular sieve, 0.5 parts fumed silica TS-720, stirred under vacuum for 1 hour and discharged to obtain component A.

[0051] Preparation of component B: respectively add 54 parts of isocyanate CDMDI100L and 6 parts of isocyanate MDI-50 into the reactor, continuously feed nitrogen, add 10 parts of bisphenol A polyether polyol BSA-30F dropwise, after the addition is completed, the temperature will be 80± React...

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Abstract

The invention provides a two-component polyurethane adhesive and a preparation method thereof. The two-component polyurethane adhesive is composed of a component A and a component B, wherein the component A is prepared from the following raw materials in parts by weight: 65 parts to 85 parts of vegetable oil polyol, 5 parts to 20 parts of polymer polyol, 5 parts to 12 parts of small molecular polyol, 0.3 part to 1.3 parts of a defoaming agent, 0.01 part to 0.5 part of a wetting agent, 0.3 part to 3 parts of a water removal agent and 0.1 part to 1.5 parts of a rheological agent; and the component B comprises a polyurethane prepolymer, and the structure of the polyurethane prepolymer has a rigid benzene ring and a side group protection structure. Compared with the prior art, the acid and alkali resistance and hydrolysis resistance are good, and a foundation is provided for use under the strong corrosion condition; the mixed viscosity is small, so that the adhesive has good flowability and wettability, and subsequent use is facilitated; the strength and the toughness are considered, so that the adhesive has good post-processing performance; and the adhesive has high bonding shear strength with ABS and PVC, and has favorable bonding performance.

Description

technical field [0001] The invention belongs to the field of adhesive manufacturing, and in particular relates to a two-component polyurethane adhesive and a preparation method. Background technique [0002] Hollow fiber membrane module is a module configuration with the highest packing density, generally 16000-30000m 2 / m 3 , high water production. In sewage treatment (such as municipal domestic sewage treatment, electronic industry wastewater, food industry wastewater, chemical industry wastewater, landfill leachate), pretreatment of reverse osmosis and nanofiltration (such as seawater desalination, preparation of ultrapure water), circulating water treatment (such as boilers, swimming pools, landscaping water), dairy products, electrophoretic coating, biochemical technology and other fields have a wide range of applications. [0003] At present, the main hollow fiber membrane materials used in the market are polysulfone, polyethersulfone, polyvinylidene fluoride, polyc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J11/04C08G18/32C08G18/67C08G18/48C08G18/62C08G18/65C08G18/68C08G18/69
CPCC09J175/14C09J11/04C08G18/68C08G18/686C08G18/36C08G18/69C08G18/3206C08G18/4879C08G18/6208C08G18/4063C08G18/6588C08G18/6511C08K2201/014C08K7/26Y02A20/131
Inventor 李建林杨足明赵祖培陈清张虎极韩胜利赵勇刚章锋
Owner 湖北南北车新材料有限公司
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