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High-modulus epoxy resin adhesive for vehicle-mounted laser radar

A vehicle-mounted laser radar and epoxy resin technology, which is applied in the direction of epoxy resin glue, adhesives, non-polymer adhesive additives, etc., can solve the problems of hidden dangers in production and life, insufficient bonding strength, high thermal expansion coefficient, etc., and achieve increased Curing shrinkage and elongation at break, improved structural strength, and high mechanical strength

Pending Publication Date: 2022-08-02
SHANGHAI HUITIAN NEW CHEMICAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The structural parts in the vehicle-mounted lidar are mostly made of anodized aluminum, aluminum nitride ceramics, stainless steel, and WuCu alloy. When they are bonded or fixed with ordinary epoxy resin adhesives, they often have a large curing shrinkage rate and a high thermal expansion coefficient. It leads to large internal stress and low adhesion, which leads to degumming and poor adhesion. However, the epoxy glue currently used to fix vehicle-mounted lidar structural parts generally has problems of insufficient bonding strength and large internal stress, which poses a problem for production. Life poses a huge security risk

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The production environment needs to be illuminated with yellow light, and 5 parts by weight of bisphenol A epoxy resin (viscosity of 4000mPa·s at 25°C), 10 parts by weight of alicyclic epoxy resin (Sinaxi S-28), spherical core- Acrylic rubber with shell structure (viscosity 100mPa·s at 25°C) 5 parts by weight was pre-baked at 50°C for 6-12 hours, then put into a planetary stirring tank with vacuum equipment while still hot, and a coupling agent γ- 0.1 parts by weight of glycidyl ether oxypropyl trimethoxysilane, do not vacuumize, stir at low speed (100-300rpm) for 12-15min, then open the lid of the kettle, add 15 parts by weight of titanium dioxide, 15 parts by weight of aluminum hydroxide, gas phase white carbon 0.1 part by weight of black, continue stirring at low speed (100-300rpm) without vacuuming for 12-15min, then open the lid of the kettle, cool down the material temperature to below 25°C, add 0.1 part by weight of photoinitiator triarylsulfonium salt, thermal in...

Embodiment 2

[0038] The production environment needs to use yellow light to illuminate, mix 10 parts by weight of bisphenol A epoxy resin (viscosity of 8000mPa·s at 25°C), 20 parts by weight of alicyclic epoxy resin (DAICEL CELLOXIDE 2021P), and 5 parts by weight of polyurethane modified epoxy resin 5 parts by weight and 5 parts by weight of carboxyl-terminated liquid nitrile rubber were pre-baked at 50°C for 6 hours, then put into a planetary stirring kettle with vacuum equipment while still hot, and γ-glycidyl ether oxypropyl trimethoxysilane was added. 0.5 parts by weight, without vacuuming, stirring at a low speed of 200rpm for 12-15min, then open the lid of the kettle, add 8 parts by weight of barium sulfate, 10 parts by weight of calcium carbonate, 10 parts by weight of alumina, 10 parts by weight of aluminum nitride, fumed silica 2.5 parts by weight, continue stirring at a low speed of 300 rpm without vacuuming for 5 min, then open the kettle cover, cool the material temperature to b...

Embodiment 3

[0041]The production environment needs to be illuminated with yellow light. 15 parts by weight of bisphenol A epoxy resin (viscosity of 16000mPa s at 25°C), 30 parts by weight of alicyclic epoxy resin (DAICEL CELLOXIDE 8000), urethane modified epoxy resin 20 parts by weight, pre-bake at 50°C for 6 hours, then put it into a planetary stirring kettle with vacuum equipment while it is still hot, add 1 part by weight of γ-glycidyl ether oxypropyl trimethoxysilane, and do not vacuumize, Stir at a low speed of 200rpm for 3min, then open the lid of the kettle, add 40 parts by weight of magnesium hydroxide, 20 parts by weight of calcium carbonate, and 5 parts by weight of fumed silica, continue to stir at a low speed of 200rpm without vacuuming for 3min, then open the kettle lid, and the material temperature is cooled to Below 25°C, add 2 parts by weight of photoinitiator diarylsulfonium salt, 1 part by weight of thermal initiator hexafluorophosphate, 10 parts by weight of graphene flu...

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Abstract

The invention relates to a high-modulus epoxy resin adhesive for a vehicle-mounted laser radar, which is prepared from the following raw materials in parts by weight: 5 to 15 parts of epoxy resin, 10 to 30 parts of alicyclic epoxy resin, 5 to 20 parts of toughening resin, 30 to 60 parts of filler, 0.1 to 5 parts of thixotropic agent, 0.1 to 1 part of coupling agent, 0.1 to 5 parts of photoinitiator, 0.1 to 5 parts of thermal initiator and 3 to 10 parts of fluorinated graphene. The adhesive is small in shrinkage rate, low in thermal expansion system, high in modulus, high in adhesive strength to various metal alloy materials, good in environmental reliability and capable of being subjected to UV heating dual curing, and the problem of coupling and bonding between structural parts in the field of vehicle-mounted laser radars is solved.

Description

technical field [0001] The invention belongs to the field of epoxy adhesives, in particular to a single-component epoxy resin adhesive suitable for coupling and fixing of automotive laser radar structural parts. Background technique [0002] In the passenger car industry, vehicle lidar is an important auxiliary tool for safe driving of passenger vehicles, also known as vehicle 3D laser scanner. It is a mobile 3D laser scanning system and one of the most effective tools for urban modeling. one. [0003] The structural parts in the vehicle lidar are mostly made of anodized aluminum, aluminum nitride ceramics, stainless steel, and WuCu alloy. When they are bonded or fixed with ordinary epoxy resin adhesives, they often have a large curing shrinkage rate and a high thermal expansion coefficient. This leads to high internal stress and low adhesion, which leads to degumming and poor adhesion. At present, the epoxy glue used to fix vehicle lidar structural parts generally has the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J163/02C09J11/04
CPCC09J163/00C09J11/04C08L63/00C08K3/042
Inventor 安伟张立伟赵勇刚
Owner SHANGHAI HUITIAN NEW CHEMICAL MATERIALS CO LTD
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