Vacuum bag sealing adhesive tape applicable under room temperature to 220 DEG C, and preparation method thereof

A sealing strip and vacuum bag technology, which is applied in the field of vacuum bag sealing strip and its preparation, can solve the problems of low temperature of the sealing strip, difficult peeling of the sealing strip, low viscosity of the sealing strip, etc., and achieve air tightness Good, excellent sealing, high tensile and shear strength effect

Active Publication Date: 2015-10-28
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem of low operating temperature of the existing sealing strips, enable long-term sealing at 220°C and provide a pressure of about 1 atm; solve the problem of low viscosity of the sealing strips; solve the problem of foaming of the sealing strips when used at high temperatures of 220°C; solve the sealant The strip is not easy to peel off after high temperature use

Method used

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  • Vacuum bag sealing adhesive tape applicable under room temperature to 220 DEG C, and preparation method thereof
  • Vacuum bag sealing adhesive tape applicable under room temperature to 220 DEG C, and preparation method thereof
  • Vacuum bag sealing adhesive tape applicable under room temperature to 220 DEG C, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0079] 100 parts by mass of chlorinated butyl rubber, 70 parts by mass of white carbon black (the white carbon black is first processed in an alcohol solution of 1% mass KH550, pulverized, and dried), 100 parts by mass of medium molecular weight aluminum-based polyisobutylene , 8 mass proportions of p-tert-butylphenolic resin, 5 mass proportions of zinc oxide, 2 mass proportions of accelerator DM, 1 mass proportion of accelerator TMTD, 0.5 mass proportions of anti-scorch agent magnesium oxide, 3 mass proportions of calcium oxide share.

[0080]Put the chlorinated butyl rubber in a two-roller rubber mixing machine, the distance between the rollers is about 1 mm, masticate for 10 minutes, add half of the filler, and mix evenly; add the above-mentioned mixed materials into the kneader at a temperature of 90-100 ° C, Add the pre-mixed vulcanizing agent, activator, anti-scorch agent, water-absorbing agent and the other half of the filler, and knead evenly; add polyisobutylene, knea...

Embodiment 3

[0083] 100 parts by mass of chlorinated butyl rubber, 20 parts by mass of methylated silica, 50 parts by mass of kaolin, 100 parts by mass of medium molecular weight aluminum-based polyisobutylene, 1 part by mass of n-butyl titanate, bromine 8 parts by mass of methylol p-tert-butylphenolic resin, 5 parts by mass of zinc oxide, 2 parts by mass of accelerator DM, 1 part by mass of accelerator TMTD, 0.5 parts by mass of anti-scorch agent magnesium oxide, oxidized 4 parts by mass of calcium.

[0084] Put the chlorinated butyl rubber in a two-roller rubber mixing machine, the distance between the rollers is about 1 mm, masticate for 10 minutes, add half of the filler, and mix evenly; add the above-mentioned mixed materials into the kneader at a temperature of 90-100 ° C, Add the pre-mixed vulcanizing agent, activator, anti-scorch agent, water-absorbing agent and the other half of the filler, and knead evenly; add polyisobutylene, knead evenly, and discharge; stop for 36 hours; heat...

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Abstract

The invention relates to a pressure sensitive vacuum bag sealing adhesive tape applicable under room temperature to 220 DEG C. Chlorinated butyl rubber is adopted as the base adhesive material of the sealing adhesive tape. Tackifying resin, a filler, a vulcanizing agent, an activator, a scorch retarder, a water-absorbing agent, and a coupling agent are added to the base adhesive material. The adhesive tape has the following advantage: the air permeation of chlorinated butyl rubber is the lowest among all general rubbers, such that chlorinated butyl rubber has good air tightness; the sealing adhesive tape has good heat resistance, wherein phenolic resin vulcanized chlorinated butyl rubber has as an application temperature range from room temperature to 220 DEG C; the sealing adhesive tape is pressure sensitive, such that sealing can be realized with finger pressure, wherein the pressure sensitivity is provided by polyisobutylene; the sealing adhesive tape has good adhesiveness on various sealing films and molds. A vacuum bag prepared with the sealing adhesive tape can provide pressure close to 1atm. With the sealing adhesive tape, long-time sealing can be realized under room temperature to 220 DEG C, and leakage is prevented. The sealing adhesive tape is convenient to use.

Description

technical field [0001] The invention relates to a vacuum bag sealing strip used at room temperature to 220°C and a preparation method thereof, belonging to the field of polymer rubber materials. Background technique [0002] There are mainly two companies that produce pressure-sensitive vacuum sealant strips abroad, Schinee and AEROVAC. The products have been serialized, and the maximum service temperature is 100-232°C. After use, it is easy to remove from the mold after cooling to 66°C. Peeled off, and can be peeled off and repositioned multiple times, but the recipe and method of preparation are not published. [0003] There are few domestic researches on high temperature resistant and pressure sensitive chlorinated butyl rubber vacuum bag sealing strips. [0004] Chinese patent CN101921551, High-temperature-resistant vacuum bag sealing tape, discloses a preparation method of high-temperature-resistant vacuum bag sealing tape, using butyl rubber, neoprene, polyisobutylene...

Claims

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Application Information

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IPC IPC(8): C08L23/28C08L23/22C08L61/06C08K13/06C08K13/02C08K3/36C08K3/34C08K3/22
CPCC08L23/28C08L2201/08C08L2205/02C08L2205/03C08L23/22C08L61/06C08K13/02C08K3/346C08K2003/2296C08K2003/222C08K13/06C08K3/36C08K2003/2206
Inventor 赵飞明张金亮许文王立敏
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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