Modified polyester hot melt adhesive and preparation method for adhesive film thereof

A polyester hot-melt adhesive and modified polyester technology, applied in the direction of polyurea/polyurethane adhesives, film/sheet adhesives, adhesives, etc., can solve the problem of poor, brittle metal-epoxy resin Adhesive effect, poor toughness and other problems, to achieve the effect of good low temperature toughness, good elasticity and good bonding performance

Active Publication Date: 2015-12-02
SHANGHAI TIANYANG HOT MELT ADHESIVE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to solve the problems of poor low-temperature toughness, brittleness and poor bonding effect on metal-epoxy resins of polyester hot melt adhesives, and provide a preparation of modified polyester hot melt adhesives and adhesive films thereof method

Method used

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  • Modified polyester hot melt adhesive and preparation method for adhesive film thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0024] A low-temperature-resistant modified polyester hot-melt adhesive film is characterized in that its composition and mass content include: 35 parts of polyester hot-melt adhesive, 65 parts of thermoplastic polyurethane elastomer, and 0.5 part of antioxidant; its preparation method includes Follow the steps below:

[0025] (1) Selection of raw materials;

[0026] (2) Polyester hot melt adhesive, thermoplastic polyurethane elastomer and antioxidant are mixed evenly in the high mixer;

[0027] (3) Put the uniformly mixed raw materials into the twin-screw extrusion granulation unit, melt blending and extruding;

[0028] Extrusion temperature: the temperature from the barrel to the head is 170°C, 175°C, 175°C, 175°C, 175°C, 180°C;

[0029] Host speed: 100rpm;

[0030] Feeding speed: 20rpm;

[0031] (4) The extruded mixture is water-cooled and granulated, and the extruded pellets are dried in a vacuum oven for 12 hours at a temperature of 80°C, and then the dried pellets ar...

Embodiment 2

[0033] A low-temperature-resistant modified polyester hot-melt adhesive is characterized in that its composition and mass content include: 45 parts of polyester hot-melt adhesive, 55 parts of thermoplastic polyurethane elastomer, and 0.5 part of antioxidant; its preparation method includes the following step:

[0034] (1) Selection of raw materials;

[0035] (2) Polyester hot melt adhesive, thermoplastic polyurethane elastomer and antioxidant are mixed evenly in the high mixer;

[0036] (3) Put the uniformly mixed raw materials into the twin-screw extrusion granulation unit, melt blending and extruding;

[0037] Extrusion temperature: the temperature from the barrel to the head is 170°C, 175°C, 175°C, 175°C, 175°C, 180°C;

[0038] Host speed: 100rpm;

[0039] Feeding speed: 20rpm;

[0040] (4) The extruded mixture is water-cooled and granulated, and the extruded pellets are dried in a vacuum oven for 12 hours at a temperature of 80°C, and then the dried pellets are extrude...

Embodiment 3

[0042] A low-temperature-resistant modified polyester hot-melt adhesive, characterized in that its composition and mass content include: 80 parts of polyester hot-melt adhesive, 20 parts of thermoplastic polyurethane elastomer, and 0.5 part of antioxidant; its preparation method includes the following step:

[0043] (1) Selection of raw materials;

[0044] (2) Polyester hot melt adhesive, thermoplastic polyurethane elastomer and antioxidant are mixed evenly in the high mixer;

[0045] (3) Put the uniformly mixed raw materials into the twin-screw extrusion granulation unit, melt blending and extruding;

[0046] Extrusion temperature: the temperature from the barrel to the head is 170°C, 175°C, 175°C, 175°C, 175°C, 180°C;

[0047] Host speed: 100rpm;

[0048] Feeding speed: 20rpm;

[0049] (4) The extruded mixture is water-cooled and granulated, and the extruded pellets are dried in a vacuum oven for 12 hours at a temperature of 80°C, and then the dried pellets are extruded ...

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Abstract

The invention discloses a modified polyester hot melt adhesive and a preparation method for an adhesive film thereof. The modified polyester hot melt adhesive comprises the raw materials in parts by weight: 35-80 parts of a polyester hot melt adhesive, 20-65 parts of a thermoplastic type polyurethane elastomer and 0.5 part of an antioxidant. According to the modified polyester hot melt adhesive disclosed by the invention, the polyester hot melt adhesive is blended and modified by using the polyurethane elastomer, so that the problem of low temperature brittleness of an existing polyester hot melt adhesive product is solved well. The polyester hot melt adhesive product disclosed by the invention has relatively good toughness and is not crispy at (-40) DEG C, can be used for binding metals such as an aluminum sheet and the like with epoxy resin, and is suitable for binding a metal plate and epoxy resin, particularly binding an aluminum plate and an epoxy coating pipeline in a refrigerator.

Description

technical field [0001] The invention relates to a preparation method of a modified polyester hot-melt adhesive and an adhesive film thereof, in particular to a preparation method of a low-temperature-resistant modified polyester hot-melt adhesive and an adhesive film thereof. Background technique [0002] Polyester hot-melt adhesives can be used for bonding parts of home appliances, electronic products, etc., while polyesters used for bonding internal parts of refrigerators need to meet good low-temperature toughness and have good bonding effects on metals and plastics. The current polyester hot melt is brittle and easy to crack when adjusted at a temperature of -10°C or lower. It will also crack and fall off after being placed for a period of time after crystallization at room temperature, and the bonding effect on metal and epoxy resin is not good. Therefore, it is urgent to modify polyester hot melt adhesives to solve the problems of poor low-temperature toughness and bri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J167/02C09J175/04C09J11/06C09J7/00
Inventor 李哲龙朱万育肖虎鹏
Owner SHANGHAI TIANYANG HOT MELT ADHESIVE CO LTD
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