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A kind of preparation technology of automobile light outer cover

The invention relates to a technology for automobile lamps and a preparation process, which is applied in the field of preparation technology of automobile lamp covers, and can solve the problems of poor impact performance, damage to the lamp covers, etc., and achieve the effects of good wear resistance, avoiding yellowing and good toughness.

Active Publication Date: 2019-05-07
INJECTION PRECISION RUBBER SUZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used plastic for car light covers is polymethyl methacrylate, which has excellent high temperature resistance and high strength, but its impact performance is poor, and the manufactured car light covers are prone to damage due to impact

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A preparation process for an automobile light cover, the vehicle light cover is prepared from a high light transmittance silica gel material, and the specific process includes the following steps:

[0043] (1) Put the silica gel material, polydimethylsiloxane, and nano-silica in a high-speed mixer and mix for 10-20 minutes, then transfer the obtained mixture into a twin-screw extruder, melt and extrude to granulate, and drying the obtained granules at 85° C. for 6 hours, and then adding the dried granules into an injection molding machine for injection molding to obtain a semi-finished car light cover;

[0044] Among them, the mass ratio of silica gel material, polydimethylsiloxane and nano silicon oxide is 50:0.1:1;

[0045] The silica gel material is prepared by mixing component A and component B with a mass ratio of 1:1, specifically in parts by weight, and its composition is:

[0046] A component:

[0047] 50 parts of polysiloxane containing vinyl, 2 parts of hydr...

Embodiment 2

[0059] A preparation process for an automobile light cover, the vehicle light cover is prepared from a high light transmittance silica gel material, and the specific process includes the following steps:

[0060] (1) Put the silica gel material, polydimethylsiloxane, and nano-silica in a high-speed mixer and mix for 10-20 minutes, then transfer the obtained mixture into a twin-screw extruder, melt and extrude to granulate, and drying the prepared granules at 100°C for 2 hours, then adding the dried granules into an injection molding machine for injection molding to obtain a semi-finished car light cover;

[0061] Among them, the mass ratio of silica gel material, polydimethylsiloxane and nano silicon oxide is 80:0.5:1;

[0062] The silica gel material is prepared by mixing component A and component B with a mass ratio of 1:1, specifically in parts by weight, and its composition is:

[0063] A component:

[0064] 80 parts of polysiloxane containing vinyl, 3 parts of hydrogen ...

Embodiment 3

[0076] A preparation process for an automobile light cover, the vehicle light cover is prepared from a high light transmittance silica gel material, and the specific process includes the following steps:

[0077] (1) Put the silica gel material, polydimethylsiloxane, and nano-silica in a high-speed mixer and mix for 10-20 minutes, then transfer the obtained mixture into a twin-screw extruder, melt and extrude to granulate, and drying the prepared granules at 90° C. for 5 hours, and then adding the dried granules into an injection molding machine for injection molding to obtain a semi-finished car light cover;

[0078] Among them, the mass ratio of silica gel material, polydimethylsiloxane and nano silicon oxide is 60:0.4:1;

[0079] The silica gel material is prepared by mixing component A and component B with a mass ratio of 1:1, specifically in parts by weight, and its composition is:

[0080] A component:

[0081] 60 parts of vinyl-containing polysiloxane, 2.2 parts of hy...

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Abstract

The invention discloses a preparation process of an automobile lamp outer cover. The automobile lamp outer cover is prepared from a high-transparency silicone material. The concrete process comprises the steps of firstly mixing the silicone material, a cross-linking agent and nano-silicon dioxide in a high-speed mixer for 10 to 20min, then transferring the obtained mixture into a double-screw extruder, melt-extruding for pelletizing, drying the prepared particles at the temperature of 85 to 100 DEG C for 2 to 6h, then adding the dried particles into an injection molding machine, and injection molding to obtain an automobile lamp outer cover semi-finished product, wherein the mass ratio of the silicone material, the cross-linking agent and the nano-silicon dioxide is (50 to 80): (0.1 to 0.5): 1; and finally, plating the surface of the automobile lamp outer cover to obtain the automobile lamp outer cover. The automobile lamp outer cover is made of the high-transparency silicone material instead of a traditional PMMA (Polymethyl Methacrylate) material, so that the prepared automobile lamp outer cover has good high temperature resistance and good shock resistance, and is prevented from being damaged due to collision.

Description

Technical field: [0001] The invention relates to the technical field of auto parts, in particular to a preparation process for an automobile lamp outer cover. Background technique: [0002] Car lights are tools for vehicle lighting. They can be divided into front lights, rear lights, turn signals, license plate lights, etc. Car lights play an important role in the safe driving of vehicles. The light transmission of the car light cover The efficiency and the impact resistance of the lights are also of great significance. [0003] Compared with traditional glass lampshades, plastic products are easy to manufacture and light in weight. They gradually replace glass and are used in the manufacture of automotive lamp covers. The impact strength of plastic is greater than that of glass, which effectively improves the resistance of lamp covers. impact capability. At present, the commonly used plastic for car lamp covers is polymethyl methacrylate, which has excellent high temperat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S41/50F21S43/50C08L83/07C08L83/06C08L83/05C08L5/08C08L83/04C08K13/02C08K3/36C08K5/11C09D183/04C09D5/24F21W107/10
CPCC08K2201/011C08K2201/017C08L83/04C08L83/06C08L2201/04C08L2201/08C08L2205/025C08L2205/035C09D5/24C09D183/04F21S43/00F21V3/06F21V3/10F21W2107/10C08L5/08C08K13/02C08K3/36C08K5/11C08L101/00C08K2003/2241C08K3/04
Inventor 胡海宁
Owner INJECTION PRECISION RUBBER SUZHOU CO LTD
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