Double-component solvent-free polyurethane adhesive

A polyurethane adhesive, solvent-free technology, applied in the direction of polyurea/polyurethane adhesive, adhesive, adhesive type, etc., can solve the problems of bond layer damage, short open time, poor adhesion, etc., to improve the bonding force , Improve adhesion, good bonding effect

Active Publication Date: 2016-07-20
上海都昱新材料科技有限公司
View PDF5 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Great environmental pollution, long-term use seriously damages people's physical and mental health, and the shrinkage rate is relatively large during curing, and the solvent is easy to corrode the insulation material, causing damage to the bonding layer, reducing the airtightness and insulation effect of the compartment, and reducing the refrigeration effect
In addition, solvent-based adhesives have low viscosity, short open time, glue flow, poor adhesion to some non-polar materials, and low bond strength, making the car body not resistant to impact and bumps.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Double-component solvent-free polyurethane adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The two-component solvent-free polyurethane adhesive of the present embodiment is specifically as follows:

[0027] Component A: Weigh 12kg of polyether polyol, 30kg of polyester polyol, 2kg of accelerator, 4kg of silane coupling agent, 45.92kg of quartz powder, 8kg of 4A molecular sieve, and 0.08 planetary speed of the catalyst in a 200L reactor. 30HZ, disperse at 1000rpm, then turn on the vacuum -0.1Mpa, defoam for about 20min, and discharge.

[0028] Component B: Weigh 25kg of polyester polyol, 5kg of ethylene glycol, 45kg of diphenylmethylene diisocyanate and 25kg of polymethylene polyphenylisocyanate in a 200L reactor, React at low temperature for 4-6 hours, control NCO% at 10-25%, and discharge.

[0029] Mix components A and B at a mass ratio of 2:1 to make a stainless steel shear sample, and test the shear strength after 3 days at room temperature (GB / T7124-2008); use aluminum alloy / glass fiber reinforced plastic as the test sample, and cure The condition is to...

Embodiment 2

[0031] The two-component solvent-free polyurethane adhesive of the present embodiment is specifically as follows:

[0032] Component A: Weigh 8kg of polyether polyol, 35kg of polyester polyol, 3kg of accelerator, 3kg of silane coupling agent, 40.92kg of quartz powder, 10kg of 4A molecular sieve, and 0.08 planetary speed of catalyst in a 200L reactor. 30HZ, disperse at 1000rpm, then turn on the vacuum -0.1Mpa, defoam for about 20min, and discharge.

[0033] Component B: Weigh 15kg of polyester polyol, 7.5kg of ethylene glycol, 57.5kg of diphenylmethylene diisocyanate and 20kg of polymethylene polyphenylisocyanate in a 200L reactor, React at 100°C for 4-6 hours, control NCO% at 10-25%, and discharge.

[0034] Mix components A and B at a mass ratio of 2:1 to make a stainless steel shear sample, and test the shear strength after 3 days at room temperature (GB / T7124-2008); use aluminum alloy / glass fiber reinforced plastic as the test sample, and cure The condition is to test the ...

Embodiment 3

[0036] The two-component solvent-free polyurethane adhesive of the present embodiment is specifically as follows:

[0037] Component A: Weigh 10kg of polyether polyol, 25kg of polyester polyol, 4kg of accelerator, 3kg of silane coupling agent, 46.92kg of quartz powder, 6kg of 4A molecular sieve, and 0.08 planetary speed of catalyst in a 200L reactor. 30HZ, disperse at 1000rpm, then turn on the vacuum -0.1Mpa, defoam for about 20min, and discharge.

[0038]Component B: Weigh 20kg of polyester polyol, 6.5kg of ethylene glycol, 55kg of diphenylmethylene diisocyanate and 18.5kg of polymethylene polyphenylisocyanate in a 200L reactor, React at 100°C for 4-6 hours, control NCO% at 10-25%, and discharge.

[0039] Mix components A and B at a mass ratio of 3:1 to make a stainless steel shear sample, and test the shear strength after 3 days at room temperature (GB / T7124-2008); use aluminum alloy / glass fiber reinforced plastic as the test sample, and cure The condition is to test the p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
shear strengthaaaaaaaaaa
shear strengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a double-component solvent-free polyurethane adhesive.The double-component solvent-free polyurethane adhesive is prepared from a component A and a component B at the mass ratio of (1-4):1.The component A is prepared from, by weight, 5-15% of polyether polyol, 20-40% of polyester polyol, 1-5% of an accelerant, 2-6% of a coupling agent, 30-60% of filler, 5-10% of a drying agent and 0.05-0.2% of a catalyst.The component B is prepared from, by weight, 50-80% of isocyanate, 10-30% of polyester polyol and 1-10% of a chain extender.A preparing method of the double-component solvent-free polyurethane adhesive includes the following first step of preparation of the component A, the second step of preparation of the component B and the third step of mixing of the component A and component B.The double-component solvent-free polyurethane adhesive is used for adhesion of compartment structural members in refrigerator car compartments and truck compartments, is capable of achieving long opening time, has high initial adhesion force and adhesion strength, high base material applicability and excellent adhesion force on various base materials, and is long in storage life and high in stability.

Description

technical field [0001] The invention relates to an adhesive, in particular to a two-component solvent-free polyurethane adhesive. Background technique [0002] Polyurethane adhesives refer to adhesives containing carbamate groups (-NHCOO-) or isocyanate groups (-NCO) in the molecular chain. Polyurethane adhesives have always had the following characteristics: high reactivity, high bonding strength to substrates containing active hydrogen or water absorption, such as metal, wood, rubber, fiber, wood, leather, plastic, etc., both It can be cured at room temperature or heated. It is easy to form a cross-linked structure. The hardness of the adhesive layer is also high. The operation is simple and convenient. It has excellent low temperature resistance, good flexibility, high peel strength, impact resistance, vibration resistance, and good fatigue resistance. [0003] With the improvement of social living standards and the change of lifestyle, people need more and more quick-fr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C09J11/04C08G18/66C08G18/40C08G18/32
CPCC08G18/3206C08G18/4018C08G18/6607C08K3/36C09J11/04C09J175/06
Inventor 杨军方俊许期斌杨丽燕
Owner 上海都昱新材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap