Hot-melt adhesive for automobile sunroof bracket and preparation method thereof

A technology for automotive sunroofs and hot melt adhesives, applied in the directions of adhesives, non-polymer adhesive additives, adhesive types, etc., can solve the problem of high odor of hot melt adhesives, VOC difficult to meet VOC standards, and difficult to comply with auto OEMs Odor grade standards and other issues, to achieve the effect of good bonding performance, no fire safety hazards, and strong bonding strength

Active Publication Date: 2018-01-30
重庆中科力泰高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing hot melt adhesives have the following two disadvantages: (1) the VOC in the current hot melt adhesives is difficult to meet the VOC standards set by automobile OEMs; (2) the current hot melt adhesives have a high odor and are difficult to meet Odor level standards set by automotive OEMs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A hot-melt adhesive for automobile sunroof brackets, consisting of the following components by mass fraction: 61% APAO resin; 32% tackifying resin; 5.4% plasticizer; 0.8% deodorant; 0.8% antioxidant;

[0027] Among them, the APAO resin is composed of the following three APAO resins: APAO resin A with a propylene content of 85%, a glass transition temperature of -36°C, a softening point of 130°C, and a viscosity of 160,000 cps at 190°C; the propylene content of 85% %, the glass transition temperature is -22°C, the softening point is 168°C, and the viscosity at 190°C is APAO resin B of 2000cps; the butene content is 65%, the glass transition temperature is -32°C, and the softening point is 156°C, 190°C APAO resin C with a viscosity of 9000cps under the condition; APAO resin A: APAO resin B: APAO resin C=1:1:2; the tackifying resin has a softening point of 100°C and a viscosity of 8000cps at 190°C Hydrogenated petroleum resin.

Embodiment 2

[0029] (1) Accurately weigh the following raw materials in weight percentage: APAO resin 35.0%; APAO resin A: APAO resin B: APAO resin C=1:1:2; tackifying resin 58.0%; plasticizer 5.4%; deodorant 0.8%; antioxidant 0.8%;

[0030] (2) Heat the above-mentioned tackifying resin, plasticizer, deodorant, antioxidant 1010, and antioxidant 168 to 145°C, and vacuumize while stirring until each component is completely melted; then add APAO resin and heat at 190°C Heating, stirring, and vacuuming under certain conditions until melting, stirring evenly, standing still for 30 minutes, transferring the material to a mold, cooling, and forming, that is, hot melt adhesive for bonding ABS skylights.

Embodiment 3

[0032] (1) Accurately weigh the following raw materials in weight percentage: APAO resin 48.0%, APAO resin A: APAO resin B: APAO resin C=1:1:2; tackifying resin 45%; plasticizer 5.4%; deodorant 0.8%; antioxidant 0.8%;

[0033] (2) Heat the above-mentioned tackifying resin, plasticizer, deodorant, antioxidant 1010, and antioxidant 168 to 145°C, and vacuumize while stirring until each component is completely melted; then add APAO resin and heat at 175°C Heating, stirring, and vacuuming under certain conditions until melting, stirring evenly, standing still for 30 minutes, transferring the material to a mold, cooling, and molding, that is, hot melt adhesive for bonding PP skylights.

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Abstract

The invention relates to a hot-melt adhesive for automobile skylight brackets. The hot-melt adhesive for automobile skylight brackets is composed of the following raw materials in percentage by mass: 35-61% of amorphous alpha-olefin copolymer resin, 32-58% of tackifying resin, 0-10% of plasticizer, 0.8% of deodorant and 0.8% of antioxidant. The hot-melt adhesive for automobile skylight brackets has the advantages of superhigh bonding strength, uniform adhesive force, high curing speed, favorable aging resistance, low VOC (volatile organic compound) and low odor, is convenient to operate, and has favorable application prospects in automobiles.

Description

technical field [0001] The invention relates to the technical field of hot-melt adhesives, in particular to a hot-melt adhesive for automobile sunroof brackets and a preparation method thereof. Background technique [0002] Automotive sunroof bracket glue belongs to the category of structural glue. High bonding strength is required, and the bonded finished skylight sample is required to be baked at a high temperature of ≥90°C for 168 hours, and the material will be damaged after cooling; at the same time, the bonded finished skylight sample is required to be able to withstand low temperatures below -40°C . It is required to have good initial viscosity, simple operation process, and be able to meet the needs of rapid production and assembly. In recent years, the international environmental requirements for the confined space of automobiles have become higher and higher, and the VOC emissions and odor intensity of adhesives used in automotive interiors have become a new focu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J123/20C09J123/14C09J157/02C09J11/08C09J11/06
CPCC08L2201/08C08L2205/025C08L2205/035C09J11/06C09J11/08C09J123/20C08L23/14C08L57/02C08L91/00C08K5/1345C08K5/526
Inventor 李有刚刘志林沈巧
Owner 重庆中科力泰高分子材料有限公司
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