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Expansion shock insulation glue for body in white and preparation method of expansion shock insulation glue

A technology of shock-isolating glue and body-in-white, which is applied in the field of expansion shock-isolating glue production, which can solve problems such as high vibration frequency, large vibration amplitude of sheet metal, and difficulty in supporting strength effectively, and achieve good adhesion, high flexibility, and anti-corrosion Good sag effect

Pending Publication Date: 2022-01-07
ANHUI JIANGHUAI ANCHI AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Conclusion: Due to product structure design and other reasons, the roof and roof beams of this model have a large vibration amplitude and high vibration frequency when the middle door is closed and the road test is performed. Vibration glue ②"The colloid between the sheet metals cannot be effectively attached to the surface of the sheet metal. After filling, the degree of fit between the sheet metals cannot be controlled, and the strength is difficult to effectively support the pressure of the external factors on the sheet metal, resulting in outer plates and beams. Cooperate with problems such as gaps, resonance, and air flow

Method used

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  • Expansion shock insulation glue for body in white and preparation method of expansion shock insulation glue
  • Expansion shock insulation glue for body in white and preparation method of expansion shock insulation glue
  • Expansion shock insulation glue for body in white and preparation method of expansion shock insulation glue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In this embodiment, a kind of expansion shock-absorbing adhesive for body-in-white includes the following components in weight percentage:

[0041] Synthetic rubber 10%;

[0042] Butadiene rubber 5%;

[0043] Epoxy resin 3%;

[0044] Pigment 0.4%;

[0045] Filler 37%;

[0046] Hygroscopic agent 4%;

[0047] Curing agent 1.3%;

[0048] Foaming agent 0.6%;

[0049] Additive 12%;

[0050] Plasticizer 26.7%.

[0051] In this example, carbon black was used as a pigment to increase rubber coloring.

[0052] Its specific preparation method comprises the following steps:

[0053] Step 1: Weigh the ingredients, weigh the raw materials of each component according to the above weight percentage, and check the appearance, identification and physical characteristics of the raw materials to ensure the quality of the raw materials, and put the weighed raw materials into 1 ton compound in order The batching is carried out twice in the machine;

[0054] Step 2: Vacuum stirrin...

Embodiment 2

[0058] In this embodiment, a kind of expansion shock-absorbing adhesive for body-in-white includes the following components in weight percentage:

[0059] Synthetic rubber 12%;

[0060] Butadiene rubber 3%;

[0061] Epoxy resin 5%;

[0062] Pigment 0.2%;

[0063] Filler 39.9%;

[0064] Hygroscopic agent 2%;

[0065] Curing agent 2.5%;

[0066] Foaming agent 0.4%;

[0067] Additive 8%;

[0068] Plasticizer 27%.

[0069] In this example, carbon black was used as a pigment to increase rubber coloring.

[0070] Its specific preparation method is basically the same as that of Example 1.

Embodiment 3

[0072] In this embodiment, a kind of expansion shock-absorbing adhesive for body-in-white includes the following components in weight percentage:

[0073] Synthetic rubber 11%;

[0074] Butadiene rubber 4%;

[0075] Epoxy resin 4%;

[0076] Pigment 0.3%;

[0077] filler 41%;

[0078] Hygroscopic agent 3%;

[0079] Curing agent 2.2%;

[0080] Foaming agent 0.5%;

[0081] Additive 12%;

[0082] Plasticizer 22%.

[0083] In this example, carbon black was used as a pigment to increase rubber coloring.

[0084] Its specific preparation method is basically the same as that of Example 1.

[0085] The performance detection result of the finished product that above-mentioned three embodiments make is as shown in table 1:

[0086]

[0087] Table 1

[0088] Compared with the above test results as Figure 4 According to the technical standards shown, it can be concluded that the performance of the solvent-free reactive expansion rubber based on synthetic rubber can reach high...

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Abstract

The invention discloses expansion shock insulation glue for a body in white. The expansion shock insulation glue comprises the following components in percentage by weight: 10-12% of synthetic rubber; 3-5% of butadiene rubber; 3-5% of epoxy resin; 0.2-0.4% of pigment; 37-41% of a filler; 2-4% of a moisture absorbent; 1.3-2.5% of a curing agent; 0.4-0.6% of a foaming agent; 8-12% of an additive; and 22-27% of a plasticizer. The pigment is carbon black. The invention also provides a preparation method of the expansion shock insulation glue for the body in white, and the preparation method comprises the following steps: step 1, weighing and burdening: weighing the raw materials according to specified metering, and sequentially putting the weighed raw materials into a 1-ton mixing machine for burdening twice; step 2, vacuum stirring: subjecting the prepared raw materials to vacuum stirring; and step 3, viscosity inspection and adjustment: carrying out viscosity inspection on the product subjected to primary vacuum stirring, carrying out secondary vacuum stirring after inspection so as to carry out viscosity adjustment, and carrying out secondary vacuum stirring until the product reaches a specified performance index, so as to prepare a finished product of the expansion shock insulation glue.

Description

technical field [0001] The invention relates to the field of production of expansion shock-absorbing glue, in particular to an expansion shock-isolation glue for body-in-white and a preparation method thereof. Background technique [0002] The car body is stamped from sheet metal and joined by spot welding. In the spot welding assembly process, it is required to use intumescent glue, which is used to fill the internal cavity of the car body, the parts with insufficient strength of the body sheet metal, and fill the lap joints and matching gaps between the sheet metals, so as to avoid sheet metal resonance and air flow. In order to meet the requirements of shock absorption, noise reduction and NVH during the driving process of the vehicle, to ensure the performance requirements of the body's sealing, anti-vibration and improve the comfort of the vehicle, it is necessary to apply glue to the body. The invention can mainly realize the functions that the traditional expansion d...

Claims

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Application Information

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IPC IPC(8): C08L21/00C08L9/00C08L63/00C08J9/04
CPCC08J9/04C08J9/0061C08J2321/00C08J2409/00C08J2463/00
Inventor 戴耿磊方海鹏李登辉盛卓翰
Owner ANHUI JIANGHUAI ANCHI AUTOMOBILE
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