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Hot melt adhesive composition for sealing automobile lamp and preparation method thereof

A sealing, hot-melt adhesive technology, applied in the direction of adhesives, adhesive types, polyether adhesives, etc., can solve the problems of complex process, poor processing performance, low production efficiency, etc., to achieve simple operation process, weather resistance, etc. Good, reducing the effect of material aging

Active Publication Date: 2013-02-13
WUXI WANLI ADHESION MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the above disadvantages, provide a hot melt adhesive for lamp sealing and its preparation method, and solve the problems of poor processability, low production efficiency and complicated process faced by the current material (butyl rubber)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] SEBS: 15kg, polyolefin: 50kg, tackifying resin: 35kg, antioxidant: 1kg, light stabilizer: 0.5kg.

[0023] The preparation method is as follows:

[0024] (1) Put 15kg of SEBS, 1kg of antioxidant and 0.5kg of light stabilizer into the heat transfer oil reactor and start heating. After the temperature of the material rises to 120°C, add 20kg of tackifying resin, control the temperature of the material at 150~170°C, and heat 20 minutes until the tackifying resin melts;

[0025] (2) Put in 50kg of polyolefin, seal the reactor, vacuumize, the pressure is <-0.09Mpa, after vacuuming for 50 minutes, confirm that the input polymer is completely melted, add the remaining 15kg of tackifying resin, seal the reactor, vacuumize and stir , pressure <-0.09Mpa, after 20 minutes, confirm that the input tackifying resin is melted and stirred evenly, the material has no obvious air bubbles, and the heating is turned off;

[0026] (3) Filter and discharge the mixture obtained in step (2) w...

Embodiment 2

[0029] SEBS: 14kg, polyolefin: 50kg, tackifying resin: 33kg, antioxidant: 1kg, light stabilizer: 0.5kg.

[0030] The preparation method is as follows:

[0031] (1) Put 14kg of SEBS, 1kg of antioxidant and 0.5kg of light stabilizer into the heat transfer oil reactor, start heating, after the material temperature rises to 120°C, add 20kg of tackifying resin, control the material temperature at 150~170°C, heat 20 minutes until the tackifying resin melts;

[0032] (2) Put 50kg of polyolefin into the mixture obtained in step (1), seal the reactor, vacuumize, and the pressure is <-0.09Mpa; after 50 minutes, confirm that the main polymer put in is completely melted, and add the remaining 13kg of tackifying resin, Close the reaction kettle, vacuumize and stir, and the pressure is <-0.09Mpa; after 20 minutes, confirm that the tackifying resin put in is melted and stirred evenly, the material has no obvious bubbles, and the heating is turned off;

[0033] (3) Filter and discharge the ...

Embodiment 3

[0036] SEBS: 10kg, polyolefin: 50kg, tackifying resin: 30kg, antioxidant: 1kg, light stabilizer: 0.8kg.

[0037] The preparation method is as follows:

[0038] (1) Put 10kg of SEBS, 1kg of antioxidant and 0.8kg of light stabilizer into the heat transfer oil reactor, start heating, after the material temperature rises to 120°C, add 20kg of tackifying resin, and control the material temperature at 150~170°C;

[0039] Heat for 20 minutes until the tackifying resin melts;

[0040] (2) Put 50kg of polyolefin into the mixture obtained in step (1), seal the reactor, evacuate, and the pressure is <-0.09Mpa; after 50 minutes, confirm that the main polymer put in is completely melted, and add the remaining 10kg of tackifying resin, Close the reaction kettle, vacuumize and stir, and the pressure is <-0.09Mpa; after 20 minutes, confirm that the tackifying resin put in is melted and stirred evenly, the material has no obvious bubbles, and the heating is turned off;

[0041] (3) Filter an...

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Abstract

The invention relates to a hot melt adhesive composition for sealing an automobile lamp and a preparation method thereof and belongs to the technical field of macromolecule adhesive. The method includes: adding styrene-ethylene-butadiene-styrene (SEBS), an antioxygen and a light stabilizer into a conduction oil reaction kettle, heating, warming, adding a part of tackifying resin, heating till the tackifying resin melts completely, adding polyolefin, vacuum heating till the polyolefin melts completely, adding the remained tackifying resin continuously, heating, mixing till the tackifying resin metls, mixing evenly, discharging and packaging to obtain the hot melt adhesive composition for sealing the automobile lamp. The preparation method is simple, no harmful substance is emitted in a production process, no solvent is used, and the hot melt adhesive is environment-friendly adhesive. When users use the hot melt adhesive, coating process is simple, and device investment is less. Compared with the existing sealing adhesive for the automobile lamp in the market, the hot melt adhesive composition is good in a sealing effect and weather-resistance.

Description

technical field [0001] The invention relates to a car lamp sealing hot melt adhesive composition and a preparation method thereof, belonging to the technical field of polymer adhesives. Background technique [0002] Hot melt adhesive is a new type of adhesive, which does not contain any solvents, is pollution-free, and is environmentally friendly. The production process is simple, the cost is low, and the equipment investment is small when customers use it. In terms of use, it has high production efficiency and a wide range of uses. [0003] Car lamp seals generally use butyl rubber as the main polymer. The disadvantage of using butyl rubber is that the investment in equipment is large. In addition, the viscosity of butyl rubber itself is relatively high, the processability is poor, and the requirements for technology are relatively high. When butyl rubber is glued, due to its high viscosity, the glue speed is slow and the production efficiency is low. The disadvantage of ...

Claims

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Application Information

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IPC IPC(8): C09J153/02C09J123/12C09J171/00C09J123/06C09J123/08C09J157/02C09J11/06
Inventor 周其平张自强
Owner WUXI WANLI ADHESION MATERIALS
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