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A kind of high temperature resistant sealant composition and high temperature resistant sealing tape and preparation method thereof

A sealing tape and sealant technology, applied in the direction of polymer adhesive additives, non-polymer adhesive additives, aldehyde/ketone condensation polymer adhesives, etc., can solve the problem of increasing mold cleaning burden and affecting vacuum bag sealing Performance, damage, etc.

Active Publication Date: 2019-02-26
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sealants currently used are often damaged due to excessively high temperatures, cracking and flowing at high temperatures affect the sealing performance of the vacuum bag, and the burden of mold cleaning is increased due to the large amount of residual glue during demoulding.

Method used

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  • A kind of high temperature resistant sealant composition and high temperature resistant sealing tape and preparation method thereof
  • A kind of high temperature resistant sealant composition and high temperature resistant sealing tape and preparation method thereof

Examples

Experimental program
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Embodiment approach

[0023] According to a preferred embodiment of the present invention, the mixing method is to mix the main resin, the telechelic polymer and the filler uniformly first, and then add the vulcanizing agent and the accelerator and mix uniformly.

[0024] According to the preparation method of the high temperature resistant sealing tape provided by the invention, the preparation method comprises:

[0025] Step S1: adding the main resin, telechelic polymer and filler into the internal mixer, and banburying at 60-100°C;

[0026] Step S2: Lower the banburying temperature in S1 to below 40°C, add vulcanizing agent and accelerator, fully mix and discharge;

[0027] Step S3: compressing the material discharged in step S2, cutting it into strips and attaching a release paper to obtain the sealing tape. The size of the sealing strip can be adjusted according to actual needs, and the usual size can be, thickness: 3±0.2mm, width: 12±0.2mm.

[0028] Among them, in step S1, tackifiers, auxil...

Embodiment 1~7

[0033] The composition and dosage of the sealing tape in this example are shown in Table 1.

[0034] The production process is as follows: 1) The main rubber and the teleclaw polymer are kneaded and thinned 30 times, and the tablets are produced; 2) The mixture in step 1) is weighed and put into the internal mixer at 100 degrees for 30 minutes, 3 ) Weigh the phenolic resin as needed and put it into the internal mixer and banbury together at 100°C for 10 minutes; 4) Weigh other materials except vulcanizing agent and accelerator and gradually add them to the internal mixer within 30 minutes, 5 ) Continue banburying for 10 minutes after adding, and then cool down the mixer to below 40°C within 30 minutes. 6) Weigh the vulcanizing agent and accelerator and put them in the mixer, and continue banburying for 30 minutes to discharge. 7) The resulting semi-finished product was compressed by a double-roller tablet machine and cut into strips to obtain a sample of the sealing tape of th...

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Abstract

The invention discloses a high temperature-resistant sealant composition. The sealant composition is prepared from matrix resin, telechelic polymer, filler, vulcanizing agent, and accelerant; and the telechelic polymer is hydroxyl-terminated polybutadiene and / or polyisoprene. As the telechelic polymer is adopted in the formula, the high temperature resistance of the sealant can be enhanced, and the phenomenon of mold sticking cannot occur during stripping under high temperature. The invention further provides a high temperature-resistant sealant tape and a preparation method for the high temperature-resistant sealant tape.

Description

technical field [0001] The invention relates to a sealant composition and a method for making a sealing tape, in particular to a high-temperature-resistant sealant composition, a high-temperature-resistant vacuum bag sealing tape and a preparation method thereof. Background technique [0002] The vacuum forming process needs to seal the product between the mold and the vacuum bag, and pressurize the product by vacuuming to make the product denser and have better mechanical properties. In the process of implementing the vacuum bag compression molding method, it is necessary to use a vacuum bag to seal the vacuum, that is, between the vacuum bag and the production mold and between the vacuum bag and the vacuum bag need to be sealed, because there will be a heating process during use , so that the molding device is in a high temperature state, at this time, the adhesive tape used for sealing is required to have a certain high temperature resistance; at the same time, in order t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J123/22C09J123/28C09J147/00C09J123/20C09J161/06C09J11/04C09J11/06C09J11/08C09J7/30
CPCC08K2201/011C08L2201/08C08L2205/02C08L2205/025C08L2205/035C09J7/00C09J11/04C09J11/06C09J11/08C09J123/22C09J147/00C08L23/22C08L23/283C08L61/06C08K13/02C08K2003/265C08K3/34C08K3/06C08K5/09C08L47/00
Inventor 张晓宇周维
Owner BYD CO LTD
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