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Intermediate of damping pad for automobile and preparation method thereof

An intermediate and damping pad technology, applied in the field of the intermediate of damping pad and its preparation, can solve the problems of no outstanding shockproof effect, long time required, only epoxy resin, etc., and achieves excellent air tightness, The effect of improving the bending resistance and excellent alkali resistance

Active Publication Date: 2010-07-14
SHANGHAI DELIAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional damping pad is composed of high temperature curing high polymer with expansion viscosity, glass fabric and release paper, while the earliest reinforced film for car body is composed of glass cloth and a layer of thermosetting epoxy resin adhesive. When this reinforced film is applied to sheet molding compound (SMC) or sheet metal products, it can increase the bending strength and impact strength of potential weak spots, but the increased strength of this reinforced film is not high. It takes a long time after heat curing, and there is no outstanding effect on the shockproof effect. This is because the conventional intermediate is only epoxy resin.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing an intermediate of a damping pad for automobiles, the method includes the following steps:

[0026] (1) Prepare raw materials according to the following components and contents: 32kg of nitrile rubber, 64kg of commercially available 634-type bisphenol A epoxy resin, 2.5kg of curing agent dicyandiamide, and 1.5kg of glass beads with a particle size of 30μm;

[0027] (2) Add nitrile rubber and commercially available type 634 bisphenol A epoxy resin into the reaction kettle, cover the kettle and vacuum it to 0.4MPa, turn on the stirring device, control the speed to 200rpm, and control the reaction temperature to 85 ℃, heating for 80min to make the rubber and epoxy resin mixed uniformly;

[0028] (3) Open the lid of the kettle, lower the temperature of the reaction kettle to 20°C, add glass beads and curing agent dicyandiamide to the reaction kettle, cover the kettle, turn on the stirring device, control the speed to 400rpm, and vacuum the reaction kettle T...

Embodiment 2

[0030] A method for preparing an intermediate of a damping pad for automobiles, the method includes the following steps:

[0031] (1) Prepare the raw materials according to the following components and contents: 30kg of nitrile rubber, 66kg of glycidyl ester epoxy resin, curing agent 1, 2, 2kg of diaminocyclohexane, 2kg of glass beads with a particle size of 20μm;

[0032] (2) Add nitrile rubber and glycidyl ester epoxy resin into the reaction kettle, cover the kettle and evacuate it to 0.3MPa, turn on the stirring device, control the speed to 200rpm, control the reaction temperature to 80℃, and heat for 60min , Make the rubber and epoxy resin mix uniformly;

[0033] (3) Open the lid of the kettle, lower the temperature of the reaction kettle to 25°C, add glass beads and curing agent 1, 2, diaminocyclohexane to the reaction kettle, cover the kettle, turn on the stirring device, and control the speed to 350 rpm , Vacuum the reaction kettle to 0.3MPa, react for 1.5h, then get the inte...

Embodiment 3

[0035] A method for preparing an intermediate of a damping pad for automobiles, the method includes the following steps:

[0036] (1) Prepare raw materials according to the following components and contents: 35 kg of nitrile rubber, 60 kg of glycidyl amine epoxy resin, 2 kg of curing agent dicyandiamide, and 3 kg of glass beads with a particle size of 50 μm;

[0037] (2) Add nitrile rubber and glycidylamine epoxy resin into the reaction kettle, cover the kettle and evacuate it to 0.5MPa, turn on the stirring device, control the rotation speed to 300rpm, control the reaction temperature to 90℃, and heat for 90min , Make the rubber and epoxy resin mix uniformly;

[0038] (3) Open the lid of the kettle, lower the temperature of the reaction kettle to 20℃, add glass beads and curing agent dicyandiamide to the reaction kettle, cover the kettle, turn on the stirring device, control the speed to 500rpm, and vacuum the reaction kettle To 0.5MPa, react for 3h to obtain the intermediate of da...

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Abstract

The invention relates to an intermediate of a damping pad for an automobile and a preparation method thereof. The intermediate contains the following components in parts by weight: 30-35 parts of rubber, 60-66 parts of epoxy resin, 2-3 parts of curing agent and 1-3 parts of glass microsphere. The rubber and the epoxy resin are added into a reaction kettle, are vacuumized, are agitated and are heated, the reaction kettle is cooled to 20-25 DEG C, and the glass microsphere and the curing agent are added into the reaction kettle, are agitated, are vacuumized and react for 1.5-3h to obtain the intermediate of the damping pad for the automobile. Compared with the prior art, the invention has good alkali resistance, good acid resistance, good dissolving resistance, good surface current leakage resistance and good arc resistance, and can be widely used on right-angle panels, door handles, damping parts, packaging frames, front hoods, baggage compartment covers, roofs and chassis.

Description

Technical field [0001] The invention relates to a damping pad intermediate and a preparation method thereof, in particular to an automobile damping pad intermediate and a preparation method thereof. Background technique [0002] The damping pad reinforced film can provide additional strength to larger-sized steel or thicker SMC without increasing its weight, so it has a wide range of applications, including the automotive industry, electrical appliances, and other applications. The traditional damping pad is composed of high temperature curing high polymer with expansion viscosity, glass fabric and release paper, and the earliest reinforcement film used in the car body is composed of glass cloth and a layer of thermosetting epoxy resin adhesive. When this kind of reinforced film is applied to sheet molding compound (SMC) or sheet metal products, it can improve the flexural strength and impact strength of potential weak points, but the increased strength of this kind of reinforced...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L63/02C08L9/02C08K7/20C08K5/31C08K5/17
Inventor 徐咸大
Owner SHANGHAI DELIAN CHEM