Check patentability & draft patents in minutes with Patsnap Eureka AI!

Polyurethane adhesive with short opening time and high elasticity and application thereof

A technology of polyurethane adhesives and polyester polyols, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., to achieve strong body strength, good elasticity, and accelerated assembly efficiency

Active Publication Date: 2016-02-10
XIAMEN WELDTONE TECH CO LTD
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult for the existing polyurethane hot melt adhesives to take into account both high bonding strength and good flexibility while ensuring a short open time.

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
  • Polyurethane adhesive with short opening time and high elasticity and application thereof
  • Polyurethane adhesive with short opening time and high elasticity and application thereof
  • Polyurethane adhesive with short opening time and high elasticity and application thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] As shown in Table 1, the reactive hot-melt adhesive involved in the present invention can be prepared from the formula in the table, and the polyether polyol is heated to 100 degrees Celsius and mixed in the reactor (stirring speed is 300rpm), and vacuum-dried, when the reactor The internal mixture was kept for two hours after becoming homogeneous. In this example, the polyether polyol is PTMEG1000, the mixture of PPG1000 and thermoplastic polyurethane PB501, then MDI is added in the reactor, the vacuum is turned on and kept stirring at 100 degrees Celsius for 80 minutes (stirring speed 150rpm), and finally the catalyst DMDEE and Silane coupling agent KH560, after stirring in vacuum for 10 minutes, discharge.

[0023] We used the same method to prepare four different formulations, listed in Table 1. A typical reactive hot melt adhesive is prepared when the reaction is complete. For the present invention, the open time and ultimate strength of the product are critical....

example 2

[0030] As shown in Table 3, the reactive hot-melt adhesive involved in the present invention can be prepared from the formula in the table, and the polyether polyol is heated to 100 degrees Celsius and mixed in the reactor (stirring speed is 300rpm), and vacuum-dried, when the reactor The internal mixture was kept for two hours after becoming homogeneous. In this example, the polyether polyol is a mixture of PTMEG1000, PPG1000 and thermoplastic polyurethane PB501. At this time, add MDI into the reactor, turn on the vacuum and keep stirring at 100 degrees Celsius for 80 minutes (stirring speed 150rpm), and finally add the trifunctional The isocyanate DESMODURN3300, the catalyst DMDEE and the silane coupling agent KH560 are discharged after vacuum stirring for 10 minutes.

[0031] We used the same method to prepare four different formulations, listed in Table 3. A typical reactive hot melt adhesive is prepared when the reaction is complete. For the present invention, the open ...

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

No PUM Login to View More

Abstract

The invention relates to a polyurethane adhesive and application thereof. The polyurethane adhesive is prepared from, by mass, 20%-36% of polyether polyol or polyester polyol or a mixture of polyether polyol and polyester polyol, 48%-70% of thermoplastic resin, 13%-15% of isocyanate, 0.5% of catalyst and 1% of silane coupling agent, wherein the total percentage of the materials is 100%. The polyurethane adhesive can be used as a material of a supporting gasket. According to the polyurethane adhesive, after adhesive application is over, the surface of the adhesive can lose stickiness in an extremely short time, and components in adhesion have high bonding strength and good tenacity. Therefore, convenience is brought to a user, assembly efficiency is greatly improved for the user, and a good bonding effect is achieved. The polyurethane adhesive can be used as a bearing or buffering gasket in the process of assembling light parts under the condition of a small adhesive application thickness. Besides, the polyurethane adhesive has high body strength and good elasticity, thereby being capable of being used for adhesion of general structures.

Description

technical field [0001] The invention relates to a polyurethane adhesive and its application. Background technique [0002] Polyurethane (PU) is a high-performance polymer synthetic material, which has been widely used in the fields of foam plastics, elastomers, adhesives and coatings. Polyurethane adhesives have excellent bonding properties, good flexibility, impact resistance, solvent resistance, abrasion resistance, flexibility and low temperature resistance, and are widely used in composite films, shoes, leather, fabrics, etc. , automobiles, timber, civil engineering and other industrial sectors and civil fields. However, it is difficult for existing polyurethane hot-melt adhesives to take into account both high bonding strength and good flexibility while ensuring a short open time. Contents of the invention [0003] The object of the present invention is to provide a polyurethane-based adhesive. After the glue is applied, the surface can lose its stickiness in a ver...

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
IPC IPC(8): C09J175/04C09J175/08C09J175/06C08G18/48C08G18/76C08G18/42
Inventor 刘涛
Owner XIAMEN WELDTONE TECH CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com