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Hot melt adhesive for car light and manufacturing method thereof

A manufacturing method and technology of hot melt adhesive, applied in the directions of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems such as failure to achieve pre-effects, low softening point, and influence on the development of automobile lamps and lanterns.

Inactive Publication Date: 2011-07-06
JIANGSU NEW MATERIALS SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, with the vigorous development of my country's automobile industry, the requirements for automobile lamps continue to increase, so that the original hot melt adhesive products, such as ethylene-vinyl acetate co-required (EVA), styrene-butadiene-styrene triblock copolymer The hot melt adhesive with substance (SBS) as the main body has disadvantages such as low softening point, poor adhesion, short open time, and poor aging resistance, so it is difficult to meet the requirements of the automotive lighting industry and fail to achieve the desired effect, thus affecting The development of automotive lamps

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The hot-melt adhesive for car lights includes the following components by weight: 20 parts of butyl rubber elastomer, 18 parts of naphthenic oil as plasticizer, 15 parts of alicyclic petroleum resin as tackifier, and light 12 parts of calcium carbonate, 1 part of (3,5-tertiary butyl-4-hydroxyphenyl) sulfide as an antioxidant, and 2 parts of coloring agent.

[0034] The manufacturing method of the above-mentioned hot-melt adhesive for car lights consists of the following steps:

[0035] (1) Accurately weigh the above-mentioned components in proportion, and successively put tackifier, plasticizer, filler, antioxidant into the stirring reactor equipped with butyl rubber elastomer;

[0036] (2) At normal temperature and pressure, each interval is 20 minutes, the ratio is not limited, will be added to the composition of step (1), after all the addition, stir and mix for 10 minutes, and statically set for 30 minutes;

[0037] (3) Add N to the stirring reaction 2 , linearly...

Embodiment 2

[0040] Hot-melt adhesive for car lights, by weight components, including the following components: 39 parts of butyl rubber elastomer, 25 parts of white mineral oil and solid paraffin mixture, 18 parts of terpene phenol resin, fumed white carbon black 13 parts, tetrakis [β-(3,5-tertiary butyl-4-hydroxyphenyl) propionate] pentaerythritol ester 3 parts, coloring agent 2 parts.

[0041] The manufacturing method of the above-mentioned hot-melt adhesive for car lights consists of the following steps:

[0042] (1) Accurately weigh the above-mentioned components in proportion, and successively put tackifier, plasticizer, filler, antioxidant into the stirring reactor equipped with butyl rubber elastomer;

[0043] (2) At normal temperature and pressure, each interval is 20 minutes, the ratio is not limited, will be added to the composition of step (1), after all the addition, stir and mix for 10 minutes, and stand at a temperature lower than 50 ° C 40 minutes;

[0044] (3) Add N to t...

Embodiment 3

[0047] The hot-melt adhesive for car lights comprises the following components by weight: 50 parts of butyl rubber elastomer, 32 parts of dibutyl phthalate as plasticizer, polymerized rosin and terpene phenol as tackifier 35 parts of resin mixture, 40 parts of fumed white carbon black as filler, 4 parts of bis(3,5-tertiary butyl-4-hydroxyphenyl) sulfide as antioxidant, and 8 parts of coloring agent.

[0048] The manufacturing method of the above-mentioned hot-melt adhesive for car lights consists of the following steps:

[0049] (1) Accurately weigh the above-mentioned components in proportion, and successively put tackifier, plasticizer, filler, antioxidant into the stirring reactor equipped with butyl rubber elastomer;

[0050] (2) At normal temperature and pressure, each interval is 20 minutes, the ratio is not limited, will be added to the composition of step (1), after all the addition, stir and mix for 10 minutes, and stand at a temperature lower than 50 ° C 50 minutes;...

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PUM

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Abstract

The invention discloses a formula of hot melt adhesive for a car light. The hot melt adhesive comprises the components as follows according to weight proportions: 20 to 50 parts of butyl rubber elastomer, 18 to 32 parts of plasticizer, 15 to 35 parts of tackifier, 12 to 40 parts of filler, 1 to 4 parts of antioxidant and 2 to 8 parts of colorant. Meanwhile, the invention further discloses a preparation method of the hot melt adhesive for the car light. The method comprises the following steps: the tackifier, the plasticizer, the filler and the antioxidant are sequentially thrown into a stirring reactor loaded with the butyl rubber elastomer; the composite is completely added every 20 minutes at ambient temperature and pressure, is stirred and mixed for 10 minutes and stands for 30 to 50 minutes under the condition that the temperature is lower than 50 DEG C; N2 is led to the stirring reactor; the N2 and the composite are stirred for reaction for 5 to 8 hours at a temperature ranging from 180 DEG C to 200 DEG C, then stirred for 30 minutes at ambient temperature and pressure, filtered after completely dissolved, and defoamed for 30 minutes in a vacuum manner; and after the colorant is added to the acquired hot melt adhesive, the hot melt adhesive is extruded out through a screw and then cooled, and then the needed hot melt adhesive for the car light is acquired.

Description

technical field [0001] The invention relates to the field of hot-melt adhesives and preparation methods thereof, in particular to hot-melt adhesives for car lights and preparation methods thereof. Background technique [0002] Hot melt adhesive for car lights is widely used in car headlights, rear taillights and anti-fog lights. Hot melt adhesives for car lamps are required to have a higher softening point, stronger cohesive force, better shock resistance and aging resistance. At present, with the vigorous development of my country's automobile industry, the requirements for automobile lamps continue to increase, so that the original hot melt adhesive products, such as ethylene-vinyl acetate co-required (EVA), styrene-butadiene-styrene triblock copolymer The hot melt adhesive with substance (SBS) as the main body has disadvantages such as low softening point, poor adhesion, short open time, and poor aging resistance, so it is difficult to meet the requirements of the automot...

Claims

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Application Information

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IPC IPC(8): C09J123/22C09J11/06C09J11/04
Inventor 管福友
Owner JIANGSU NEW MATERIALS SCI & TECH
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