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Heat-insulating, high-temperature and aging-resistant vibration-damping seal for automobile lamps and its preparation process

A technology for automotive lamps and high temperature resistance, which is applied to the sealing of engines, lighting and heating equipment, components of lighting devices, etc. Problems such as radiation and gasket resilience are difficult to maintain for a long time, so as to achieve the effect of reducing the number of car light maintenance, more frequent car light maintenance, and preventing stress relaxation

Active Publication Date: 2018-05-18
PAN ASIAN MICROVENT TECH JIANGSU CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The seals in the existing car lights cannot isolate the high temperature of the car engine compartment and the high temperature heat conduction and heat radiation of outdoor sunlight exposure. Working at outdoor ambient temperature for a long time, the stress of the seals is relaxed, and the resilience of the gasket is difficult to maintain for a long time
[0003] Due to the poor sealing effect of the seals of the car lights for a long time, outdoor rainwater is easy to leak, which makes the inside of the car lights easy to form fog and condensation, resulting in the light intensity of the car lights and the light signal from the turn signal being blurred , Seriously affect the safety of driving, increase the number of lamp repairs, and reduce the quality of the car

Method used

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  • Heat-insulating, high-temperature and aging-resistant vibration-damping seal for automobile lamps and its preparation process
  • Heat-insulating, high-temperature and aging-resistant vibration-damping seal for automobile lamps and its preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: A preparation process of a heat-insulating, high-temperature and aging-resistant vibration-damping seal for automobile lamps, comprising the following steps:

[0034] 1) Spray and clean the surface of EPDM rubber closed-cell foam sheet, and dry it at 70°C;

[0035] 2) Corona polarization on the surface of EPDM rubber closed-cell foam sheet;

[0036] 3) Airlessly spray a layer of expanded perlite micro-powder heat-resistant heat-resistant paint with a thickness of 0.2mm on the upper and lower surfaces of the EPDM rubber closed-cell foam sheet, and dry at 75°C for 30 minutes to dry the heat-insulated paint ;

[0037] 4) If it is necessary to thicken the coating, repeat step 3) several times after the coating is dried until the required thickness is reached;

[0038] 5) Coat the back glue on the thermal insulation paint, and cover the back glue with silicone oil paper;

[0039] 6) Die-cutting, that is, the preparation of the seal is completed.

Embodiment 2

[0040] Embodiment 2: A preparation process of a heat-insulating, high-temperature and aging-resistant vibration-damping seal for automobile lamps, comprising the following steps:

[0041] 1) Spray and clean the surface of the EPDM rubber closed-cell foam sheet, and dry it at 75°C;

[0042] 2) Corona polarization on the surface of EPDM rubber closed-cell foam sheet;

[0043] 3) Airlessly spray a layer of expanded perlite micro-powder heat-resistant heat-resistant paint with a thickness of less than 0.35mm on the upper and lower surfaces of the EPDM rubber closed-cell foam sheet, and dry it at 80°C for 35 minutes to dry the heat-insulated paint. Dry;

[0044] 4) If it is necessary to thicken the coating, repeat step 3) several times after the coating is dried until the required thickness is reached;

[0045] 5) Coat the back glue on the thermal insulation paint, and cover the back glue with silicone oil paper;

[0046] 6) Die-cutting, that is, the preparation of the seal is c...

Embodiment 3

[0047] Embodiment 3: A preparation process of a heat-insulating, high-temperature and aging-resistant vibration-damping seal for automobile lamps, comprising the following steps:

[0048] 1) Spray and clean the surface of EPDM rubber closed-cell foam sheet, and dry it at 80°C;

[0049] 2) Corona polarization on the surface of EPDM rubber closed-cell foam sheet;

[0050]3) Airlessly spray a layer of expanded perlite micro-powder heat-resistant heat-resistant paint with a thickness of 0.4mm on the upper and lower surfaces of the EPDM rubber closed-cell foam sheet, and dry it at 83°C for 38 minutes to dry the heat-insulated paint ;

[0051] 4) If it is necessary to thicken the coating, repeat step 3) several times after the coating is dried until the required thickness is reached;

[0052] 5) Coat the back glue on the thermal insulation paint, and cover the back glue with silicone oil paper;

[0053] 6) Die-cutting, that is, the preparation of the seal is completed.

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Abstract

The invention discloses a heat insulation and high-temperature aging resisting vibration reduction sealing piece for an automobile lamp and a preparation process of the heat insulation and high-temperature aging resisting vibration reduction sealing piece. The heat insulation and high-temperature aging resisting vibration reduction sealing piece comprises an EPDM rubber closed hole foamed sheet layer and expanded perlite micro-powder high temperature resisting and heat insulation paint coatings. The upper face and the lower face of the EPDM rubber closed hole foamed sheet layer are arranged on the expanded perlite micro-powder high temperature resisting and heat insulation paint coatings. The preparation process comprises the following steps that the surface of an EPDM rubber closed hole foamed sheet is subjected to spraying cleaning and is dried; expanded perlite micro-powder high temperature resisting and heat insulation paint is sprayed to the surface of the EPDM rubber closed hole foamed sheet in an airless manner, and the heat insulation paint is dried; if the coating needs to be thickened, the last step is circulated many times after the coating is dried till the required thickness is achieved; the heat insulation paint is coated with gum, and the gum is coated with release paper; and die cutting molding is achieved, and preparation of the sealing piece is completed. In this manner, the heat insulation and high-temperature aging resisting vibration reduction sealing piece has more excellent properties such as heat preservation, sealing, rainwater seepage prevention, heat insulation, aging resistance, the long service life, good gasket rebound resilience, vibration attenuation and shake prevention.

Description

technical field [0001] The invention relates to the field of automotive seals, in particular to a heat-insulating, high-temperature and aging-resistant vibration-damping seal for automotive lamps and a preparation process thereof. Background technique [0002] The seals in the existing automotive headlights cannot isolate the high temperature of the engine compartment of the car and the high temperature heat conduction and heat radiation of outdoor sunlight exposure. Working at outdoor ambient temperature for a long time, the stress of the seals relaxes, and the resilience of the gasket is difficult to maintain for a long time. [0003] Due to the poor sealing effect of the seals of the car lights for a long time, outdoor rainwater is easy to leak, which makes the inside of the car lights easy to form fog and condensation, resulting in the light intensity of the car lights and the light signal from the turn signal being blurred , Seriously affect the safety of driving, incre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/14F21V31/00C08J7/06
CPCC08J7/06C08J2323/16F16J15/14F21V31/005
Inventor 张云丁荣华
Owner PAN ASIAN MICROVENT TECH JIANGSU CORP
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