Novel hot-melt adhesive and preparation method thereof

A hot-melt adhesive and hot-melt adhesive film technology, applied in the direction of adhesives, adhesive types, film/sheet adhesives, etc., can solve the problem of metal bonding and weak adhesive bonding that have been rarely studied , Bonding strength is not high, to achieve the effect of high bonding strength, short time, low hot pressing temperature

Active Publication Date: 2016-08-17
SHANGHAI TIANYANG HOT MELT ADHESIVE CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are few studies on its bonding with metals. For better processing and practical application of materials, it is sometimes necessary to combine plastics and metal materials, and it also puts forward higher requirements for the bonding force of the two materials.
However, due to the difference between metal and plastic surfaces, the use of a single-component adhesive is not firmly bonded, and the bond strength is not high, and it is easy to be pulled apart under a small external force

Method used

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  • Novel hot-melt adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Preparation of nylon-type copolyamide: 113.16g caprolactam (1mol), 224.87g nylon 66 salt (0.857mol), 545.14g nylon 610 salt (1.714mol), 10.16g stearic acid (0.0357mol) and 100g deionized water, add into a 2L high-pressure reactor with a stirrer, a thermometer and a pressure gauge; after the feeding is completed, replace it with nitrogen and evacuate to remove the air in the reactor; then fill it with 0.2MPa high-purity nitrogen, and heat slowly Slowly raise the temperature to 250°C, under the pressure of 1.8MPa, keep it warm for 2 hours, slowly reduce the pressure to normal pressure, and continue to depressurize to 0.05MPa for 1 hour after dehydration; then discharge to obtain nylon-type copolyamide (PA-1) .

[0023] To prepare a new type of composite hot-melt adhesive, 450g of nylon-type copolyamide (PA-1), 350g of thermoplastic polyurethane (melting point is 100°C, melting index is 40g / 10min / 2.16kg / 190°C), 3g of polyethylene-terminated epoxy wax (Epoxy functionality ...

Embodiment 2

[0026] Preparation of nylon-type copolyamide: 121.24g caprolactam (1.071mol), 262.35g nylon 66 salt (1mol), 477g nylon 610 salt (1.5mol), 10.16g stearic acid (0.0357mol) and 100g deionized water were added to In a 2L high-pressure reactor with a stirrer, a thermometer and a pressure gauge; after the feeding is completed, replace it with nitrogen and evacuate to remove the air in the reactor; then fill it with 0.2MPa high-purity nitrogen, and heat it slowly Raise the temperature to 250°C, under the pressure of 1.8MPa, keep warm for 2h, slowly depressurize to normal pressure, and continue to depressurize to 0.05MPa for 1h after dehydration; discharge and pelletize to obtain granular nylon-type copolyamide (PA-2 ).

[0027] Preparation of new hot melt adhesive: 480g dimer acid copolyamide, 370g thermoplastic polyurethane (melting point 80°C, melt index 45g / 10min / 2.16kg / 190°C), 7g polyethylene-terminated epoxy wax (epoxy functional 1), 132g terpene resin, 10g kaolin, 1g antioxida...

Embodiment 3

[0030] Preparation of nylon-type copolyamide: 117.2g caprolactam (1.036mol), 215.5g nylon 66 salt (0.821mol), 545.14g nylon 610 salt (1.714mol), 11.18g stearic acid (0.0393mol) and 100g deionized water, Add it into a 2L high-pressure reactor equipped with a stirrer, a thermometer and a pressure gauge; after the feeding is completed, replace it with nitrogen and evacuate it to remove the air in the reactor; then fill it with 0.2MPa high-purity nitrogen and heat Slowly raise the temperature to 250°C, under the pressure of 1.8MPa, heat preservation reaction for 2h, slowly reduce the pressure to normal pressure, and continue to depressurize to 0.05MPa after dehydration for 1h; discharge and pelletize to obtain granular nylon-type copolyamide (PA -3).

[0031] Preparation of new hot melt adhesive: 500g dimer acid copolyamide, 340g thermoplastic polyurethane (melting point is 88°C, melt index is 42g / 10min / 2.16kg / 190°C), 9g epoxy functional polyolefin elastomer (epoxy functional 1),...

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Abstract

The invention discloses a novel hot-melt adhesive and a preparation method thereof, particularly a novel hot-melt adhesive suitable for bonding and compounding metals and ABS (acrylonitrile-butadiene-styrene) plastics and a preparation method thereof. The invention is mainly characterized in that the novel hot-melt adhesive comprises the following raw materials in percentage by mass: 45-50% of nylon type copolyamide, 34-37% of thermoplastic polyurethane, 0.3-1% of epoxy compatilizer, 10-15% of tackifier, 1-5% of filler and 0.1-0.3% of antioxidant. The preparation method comprises the following steps: selecting raw materials according to specific percents, carrying out polymerization reaction to form the nylon type copolyamide with favorable bonding properties for metals, and proportionally carrying out blend melting and extrusion on the nylon type copolyamide, thermoplastic polyurethane and the other auxiliary materials under the synergistic action of the specific compatilizer, thereby obtaining the novel hot-melt adhesive with favorable bonding properties for metals and ABS plastics. The product disclosed by the invention satisfies the demands, is simple in technique, and is convenient for industrial production and application.

Description

technical field [0001] The invention relates to a novel hot-melt adhesive and a preparation method thereof, in particular to a novel hot-melt adhesive suitable for bonding and compounding metal materials such as aluminum and stainless steel with ABS plastics and a preparation method thereof. Background technique [0002] ABS resin is one of the five major synthetic resins. It has excellent impact resistance, heat resistance, low temperature resistance, chemical resistance and electrical properties. It also has the characteristics of easy processing, stable product size, and good surface gloss. It is easy to paint. , coloring, and secondary processing such as surface metal spraying, electroplating, welding, hot pressing and bonding, etc. It is widely used in industrial fields such as machinery, automobiles, electronic appliances, instrumentation, textiles and construction. Wide range of thermoplastic engineering plastics. The bonding problem of ABS plastic is a very importan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J177/00C09J175/04C09J11/08C09J11/04C09J11/06C09J7/00C08G69/36
CPCC08G69/36C08L2205/035C09J7/00C09J11/04C09J11/06C09J11/08C09J177/00C08L75/04C08L93/04C08K3/34C08K5/1345C08L45/00C08K3/346C08L23/26C08L61/06C08L57/02C08K3/36
Inventor 曾作祥潘现路李哲龙
Owner SHANGHAI TIANYANG HOT MELT ADHESIVE CO LTD
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