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Reaction thickening type two-component polyurethane glass adhesive and preparation method thereof

A two-component polyurethane, two-component polyurethane technology, applied in the field of adhesive glue, can solve the problems of difficult mixing, tube burst, difficult extrusion of glue guns, etc., to promote mixing and dispersion, high tensile shear The effect of good strength and strong adhesion

Inactive Publication Date: 2019-08-06
GUANGDONG PUSTAR SEALED RAYON CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the viscosity of component A and component B reaches the viscosity of commonly used one-component polyurethane glass glue, it is difficult to mix evenly, and it is more likely that the glue gun is difficult to extrude, and even the tube may burst.

Method used

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  • Reaction thickening type two-component polyurethane glass adhesive and preparation method thereof
  • Reaction thickening type two-component polyurethane glass adhesive and preparation method thereof
  • Reaction thickening type two-component polyurethane glass adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A preparation method of a reactive thickening type two-component polyurethane glass adhesive glue includes the following steps:

[0048] Step 1: Prepare a two-component polyurethane adhesive prepolymer: add 100g of polyether glycol with a molecular weight of 2000, 260g of polyether triol with a molecular weight of 5000 and 100g of dioctyl phthalate into the vacuum reactor In the vacuum, dehydration is carried out at 120℃ for 4h, the moisture content of the mixture is controlled to be ≤100ppm, and then after cooling to 85℃, 70g of diphenylmethane diisocyanate is added to react for 4h under nitrogen protection to obtain a two-component Polyurethane prepolymer.

[0049] Step 2: Preparation of component A: Add 424g of the two-component polyurethane prepolymer prepared in step 1 and 95g of polymethylene polyphenyl isocyanate into the reaction device at a temperature of 45°C and a vacuum of 0.09±0.005MPa Stir for 30 min under the conditions of, to prepare the premix ①; then 120g ...

Embodiment 2

[0053] A preparation method of a reactive thickening type two-component polyurethane glass adhesive glue includes the following steps:

[0054] Step 1: Preparation of two-component polyurethane adhesive prepolymer: 120g of polyether glycol with a molecular weight of 2000, 270g of polyether triol with a molecular weight of 5000 and 110g of dioctyl phthalate are added to the vacuum reactor In the vacuum, dehydration is carried out at 120℃ for 4h, the moisture content of the mixture is controlled to be ≤100ppm, and then after cooling to 85℃, 70g of diphenylmethane diisocyanate is added to react for 4h under nitrogen protection to obtain a two-component Polyurethane prepolymer.

[0055] Step 2: Preparation of component A: Add 488g of the two-component polyurethane prepolymer prepared in Step 1 and 56g of polymethylene polyphenyl isocyanate into the reaction device at a temperature of 45°C and a vacuum of 0.09±0.005MPa Stir for 30 min under the conditions of, to obtain the premix ①; th...

Embodiment 3

[0059] A preparation method of a reactive thickening type two-component polyurethane glass adhesive glue includes the following steps:

[0060] Step 1: Prepare a two-component polyurethane adhesive prepolymer: add 100g of polyether glycol with a molecular weight of 2000, 260g of polyether triol with a molecular weight of 5000, and 110g of dioctyl phthalate into the vacuum reactor In the vacuum, dehydration is carried out at 120℃ for 4h, the moisture content of the mixture is controlled to be ≤100ppm, and then after cooling to 85℃, 70g of diphenylmethane diisocyanate is added to react for 4h under nitrogen protection to obtain a two-component Polyurethane prepolymer.

[0061] Step 2: Preparation of component A: Add 442g of the two-component polyurethane prepolymer prepared in Step 1 and 118g of polymethylene polyphenyl isocyanate into the reaction device at a temperature of 45°C and a vacuum of 0.09±0.005MPa Stir for 30 minutes under the conditions of ① to obtain the premix ①; then...

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Abstract

The invention relates to the technical field of adhesives, in particular to a reactive thickening type two-component polyurethane glass adhesive and a preparation method thereof. The preparation method comprises the following steps of: mixing and stirring a component A and a component B in a volume ratio of 1: 0.8-1.2 for 5-20min to prepare the glass adhesive. The component A comprises 40-75% of atwo-component polyurethane prepolymer, 1-15% of polymethylene polyphenyl isocyanate, 20-40% of a reinforcing filler A, 0.1-2% of a catalyst A, 0.1-2% of an adhesion promoter A and 0.1-2% of a water removal agent. The component B comprises 30-65% of a low-activity cross-linking agent, 1-10% of a high-activity cross-linking agent, 20-40% of a reinforcing filler B, 10-25% of a plasticizer B, 0.1-2%of a catalyst B and 0.1-2% of an adhesion promoter B. The preparation method of the invention has simple operation, convenient control, low production cost and high product quality, and can be used for large-scale production.

Description

Technical field [0001] The invention relates to the technical field of adhesive glue, in particular to a reactive thickening type two-component polyurethane glass adhesive glue and a preparation method thereof. Background technique [0002] With the rapid development of the automobile industry and the acceleration of the final assembly cycle, automobile OEMs have put forward new requirements for rapid glass installation, rapid positioning, and rapid curing at low temperatures. At present, one-component polyurethane glass bonding glue is usually used for glass bonding. Because one-component polyurethane glue is affected by temperature and moisture, the curing speed and initial bonding strength of the sealant are limited. [0003] For this reason, two-component polyurethane glass adhesive has gradually become the main direction of research. Sika uses the Booster system to prepare two-component polyurethane glass adhesive, which uses the usual one-component polyurethane glass adhesive...

Claims

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Application Information

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IPC IPC(8): C09J175/08C09J175/04C09J11/04C09J11/06C08G18/32C08G18/36C08G18/40C08G18/48C08G18/66
CPCC08G18/3206C08G18/3284C08G18/36C08G18/4018C08G18/4812C08G18/6629C08G18/6696C08K2003/265C08K2201/014C09J11/04C09J11/06C09J175/04C09J175/08C08K13/02C08K3/04C08K3/26C08K5/098C08K5/544C08K5/353
Inventor 张志军李桂妃林国顺万盛詹锋吴朝森王理响
Owner GUANGDONG PUSTAR SEALED RAYON CO LTD
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