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Hot melt adhesive used for automotive interiors, and preparation method of hot melt adhesive

A technology of automotive interior parts and hot melt adhesives, applied in the direction of adhesives, adhesive types, wax adhesives, etc., can solve the problems of affecting the operator's sight and producing white smoke, and achieve good toughness, strong waterproof, high intensity effect

Inactive Publication Date: 2012-08-01
浙江固特新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing hot melt adhesives for automotive interior parts on the market have an open time of about 7 to 14 seconds and a softening point of about 120°C. White smoke will be produced when used, which will affect the operator's sight in severe cases.

Method used

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  • Hot melt adhesive used for automotive interiors, and preparation method of hot melt adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Weigh 50kg of paraffin wax, 40kg of polyethylene wax, 45kg of thermoplastic elastomer SBS, 25kg of high molecular weight random polyolefin, 95kg of high molecular weight random polyolefin, 45kg of polyethylene vinyl acetate, 40kg of polyethylene vinyl acetate, C5 Petroleum resin 50kg, rosin pentaerythritol ester 100kg, antioxidant 5kg, coupling agent 3kg and filler 2kg.

[0045] preparation:

[0046] Step 1: Heat the stirring tank to 150°C, add paraffin wax and polyethylene wax, and stir until completely melted;

[0047] The second step: Add thermoplastic elastomer SBS to the mixture obtained in the first step, immediately evacuate the stirring tank to a vacuum of 0.3MPa, stir until it is completely melted, and keep it warm for 10 minutes;

[0048] The third step: adding low-molecular-weight random polyolefin, high-molecular-weight random polyolefin and antioxidant to the mixture obtained in the second step, stirring until completely melted;

[0049] Step 4: Add coupli...

Embodiment 2

[0055] Weigh 20kg of paraffin wax, 35kg of polyethylene wax, 50kg of thermoplastic elastomer SBS, 50kg of high molecular weight random polyolefin, 100kg of high molecular weight random polyolefin, 50kg of polyethylene vinyl acetate, 45kg of polyethylene vinyl acetate, C 5 Petroleum resin 95kg, rosin pentaerythritol ester 50kg, coupling agent 2kg antioxidant 3kg.

[0056] preparation:

[0057] The first step: raise the humidity of the stirring tank to 150°C, add paraffin wax and polyethylene wax, and stir until completely melted;

[0058] The second step: Add thermoplastic elastomer SBS to the mixture obtained in the first step, immediately evacuate the stirring tank to a vacuum of 0.3MPa, stir until it is completely melted, and keep it warm for 10 minutes;

[0059] The third step: adding low-molecular-weight random polyolefin, high-molecular-weight random polyolefin and antioxidant to the mixture obtained in the second step, stirring until completely melted;

[0060] Step 4:...

Embodiment 3

[0066] Weigh 10kg of paraffin wax, 45kg of thermoplastic elastomer SBS, 45kg of high molecular weight random polyolefin, 125kg of high molecular weight random polyolefin, 30kg of polyethylene vinyl acetate, 25kg of polyethylene vinyl acetate, C 5 Petroleum resin 92.5kg, rosin pentaerythritol ester 100kg, antioxidant 2.5kg, coupling agent 15kg and filler 10kg.

[0067] preparation:

[0068] Step 1: Heat the stirring tank to 150°C, add paraffin wax and polyethylene wax, and stir until completely melted;

[0069] The second step: Add thermoplastic elastomer SBS to the mixture obtained in the first step, immediately evacuate the stirring tank to a vacuum of 0.3MPa, stir until it is completely melted, and keep it warm for 10 minutes;

[0070] Step 3: Add high-molecular-weight random polyolefin 1, high-molecular-weight random polyolefin 2 and antioxidant to the mixture obtained in the second step, and stir until completely melted;

[0071] Step 4: Add coupling agent and filler to ...

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Abstract

The invention discloses a hot melt adhesive used for automotive interiors, and a preparation method of the hot melt adhesive. The hot melt adhesive used for automotive interiors is characterized by comprising a proportion of paraffin, polyethylene wax, a thermoplastic elastic body SBS, random polyolefin, polyethylene vinyl acetate, C5 petroleum resin, rosin pentaerythritol ester, antioxygen, coupling agent and filler. The preparation method comprising the following steps: heating a stirring kettle to 140 to 160 DEG C, and adding the paraffin and the polyethylene wax; adding the thermoplastic elastic body SBS, vacuum-pumping and keeping warm, adding HMW(high molecular weight) random polyolefin I, HMW random polyolefin II and the antioxygen; adding the coupling agent and the filler; cooling, and adding polyethylene vinyl acetate I and polyethylene vinyl acetate II; cooling and adding the C5 petroleum resin; adding the rosin pentaerythritol ester and keeping warm; and emptying the stirring kettle, pressurizing, discharging and forming. No pollution or poison is produced during the production process of the hot melt adhesive; and the hot melt adhesive has the advantages of high adhesion strength, long opening time, good temperature resistance, strong ageing resistance, good tenacity, strong waterproofness and the like.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and specifically designs a hot-melt adhesive for automotive interior parts and a preparation method thereof. Background technique [0002] At present, the automobile and spare parts production industry that is vigorously developed in our country requires a large amount of industrial adhesives, which are widely used for bonding and sealing between metal materials, plastics, rubber and other materials. In the production line, the degree of automation is high and the production efficiency is high. The adhesive used requires good bonding and sealing performance and short curing time. At the same time, since the car is exposed to the sun in summer, the temperature inside the car is as high as 80°C to 100°C, so there are also high requirements for the temperature resistance of the adhesive, and it must not emit odor. In recent years, the automobile industry has developed rapidly, and the interior of...

Claims

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Application Information

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IPC IPC(8): C09J191/06C09J123/06C09J153/02C09J123/00C09J123/08C09J191/00C09J193/00
Inventor 陈惠娟李光鹏邵宝有邵晓巍
Owner 浙江固特新材料科技股份有限公司
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