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Automobile hot-melt lamp adhesive

A hot-melt and lamp technology, applied in the direction of adhesives, etc., can solve the problems of poor bonding effect of glass lamps, complicated hot-melt adhesive production process, high melting viscosity of hot-melt adhesive, etc., to achieve improved wettability and low styrene content , Good colloidal flexibility

Active Publication Date: 2012-10-10
中国航天科技集团公司第四研究院第四十二所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production process of the hot melt adhesive is complicated, the equipment requirements are high, the production cost is increased, the glue is inconvenient to use, and the bonding effect on the glass lamp is not good.
[0004] Chinese invention patent application publication CN1887999A provides a hot-melt adhesive formulation, including styrene-isoprene-styrene block copolymer (SIS), ethylene-vinyl acetate copolymer (EVA), ethylene-acrylic acid ethyl Ester copolymer (EEA), tackifying resin, organic montmorillonite, antioxidant, etc., produced by twin-screw extruder under high temperature heating, used for repairing and bonding polyethylene pipes, the hot melt adhesive has a high melting viscosity , it is inconvenient to apply glue, and the effect on metal bonding is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1, automobile hot-melt lamp glue component ratio (mass %)

[0024] SIS (16% styrene content) 30

[0025] SEBS (30% styrene content) 20

[0026] Terpene resin (color number 5, softening point 110°C) 7

[0027] Hydrogenated rosin pentaerythritol ester (color number 2.5, softening point 105°C) 8

[0028] C 5 Petroleum resin (color number 4, softening point 108°C) 15

[0029] Light calcium carbonate (particle size 5μ) 5

[0030] Thermoelectric blast furnace fly ash (particle size 5μ) 5

[0031] Polyethylene wax (molecular weight 2500, softening point 110°C, flake) 2

[0032] Fischer-Tropsch wax (softening point 108°C, powder) 3

[0033] Trioctyl trimellitate (TOTM) 4

[0034] Antioxidant 1010 1

[0035] SIS, SEBS, TOTM and Antioxidant 1010 were weighed in proportion and added to a horizontal kneader that had been preheated for 60 minutes (wall temperature 180°C), kneaded for 40 minutes and then added proportionally weighed terpene resin and hydrogenated ...

Embodiment 2

[0036] Embodiment 2, automobile hot-melt lamp glue component ratio (mass %)

[0037] SIS (14% styrene content) 20

[0038] SEBS (30% styrene content) 30

[0039] Terpene resin (color number 5, softening point 105°C) 13

[0040] C 5 Petroleum resin (color number 2, softening point 108°C) 13

[0041] Light calcium carbonate (particle size 5μ) 5.5

[0042] Thermoelectric blast furnace fly ash (particle size 3μ) 6.5

[0043] Polyethylene wax (molecular weight 3000, softening point 105°C, block) 3

[0044] Fischer-Tropsch wax (softening point 108°C, powder) 4.5

[0045] Trioctyl trimellitate (TOTM) 4

[0046] Antioxidant 1010 0.5

[0047] SIS, SEBS, TOTM and antioxidant 1010 were weighed in proportion and added to a horizontal kneader that had been preheated for 80 minutes (wall temperature 190°C), kneaded for 50 minutes, and then added in proportion to terpene resin, C 5Petroleum resin, polyethylene wax, Fischer-Tropsch wax, light calcium carbonate and thermoelectric blas...

Embodiment 3

[0048] Embodiment 3, automobile hot-melt lamp glue component ratio (mass %)

[0049] SIS (14% styrene content) 20

[0050] SEBS (33% styrene content) 25

[0051] Hydrogenated rosin pentaerythritol ester (color number 2.5, softening point 105°C) 15

[0052] C 5 Petroleum resin (color number 3, softening point 108°C) 17

[0053] Light calcium carbonate (particle size 10μ) 6

[0054] Thermoelectric blast furnace fly ash (particle size 5μ) 6.8

[0055] Polyethylene wax (molecular weight 2500, softening point 105°C, flake) 2.5

[0056] Fischer-Tropsch wax (softening point 104°C, flake) 3

[0057] Trioctyl trimellitate (TOTM) 4

[0058] Antioxidant 1010 0.7

[0059] SIS, SEBS, TOTM and antioxidant 1010 were weighed in proportion and added to a horizontal kneader that had been preheated for 60 minutes (wall temperature 200°C), kneaded for 40 minutes and then added hydrogenated rosin pentaerythritol ester, C 5 Petroleum resin, polyethylene wax, Fischer-Tropsch wax, light calc...

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Abstract

An automatic hot-melt lamp adhesive for plastic, metal and glass automobile lamps comprises the following components in percent by mass: 20-30% of styrene-isopentadiene-styrene block copolymer with styrene content of 14-16%, 2030% of styrene-ethylene-butene-styrene block copolymer with styrene content of 30-33%, 25-35% of tackifying resin, 5-10% of light calcium carbonate, 5-10% of thermoelectricblast furnace fly ash, 3-8% of process additive, 2-5% of plasticizer and 0.5-1% of antioxidant. The materials sequentially added into a horizontal kneading machine according to a proportion for heating and kneading, injected in a square mould for molding and encapsulated by using release paper after cooled to demould. The automatic hot-melt lam lamp adhesive has the advantages of high bonding strength, good vibration resistance, low cost and environmental protection, and the like.

Description

technical field [0001] The invention relates to a hot-melt adhesive for bonding and sealing automobile plastic, metal and glass lamps. Background technique [0002] The adhesives used in the production of automotive lamps are mostly two-component epoxy adhesives and polyurethane reactive hot melt adhesives. Two-component epoxy glue is low in cost and widely used in low-end lamps, but after curing, the colloid has high hardness, is prone to brittleness and chapping, has poor vibration resistance, poor weather resistance, long curing time, and low production efficiency; polyurethane reactive hot melt The glue has high bonding strength and excellent vibration resistance. It is widely used in high-end automotive lighting products, but the cost is high, the curing time is long, and it is easy to block the sizing spray gun. Therefore, providing adhesives with low cost, good vibration resistance, good weather resistance, short production time and convenient operation is the goal o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J153/02C09J153/00C09J11/00
Inventor 左向阳刘振宇蔡彦
Owner 中国航天科技集团公司第四研究院第四十二所
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