Butyl rubber composition and method for producing butyl rubber adhesive tape by using same

A technology of butyl rubber and composition, applied in the field of butyl rubber composition, can solve the problems of unstable production, uncontrollable, difficult vulcanization degree and final performance index, etc. The effect of promoting the application

Inactive Publication Date: 2011-08-31
中建材苏州防水研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the vulcanization of the rubber in the internal mixer and kneader will inevitably lead to coagulation and agglomeration of the rubber, which will easily lead to unstable production, and the degree of vulcanization and final performance indicators are difficult or even impossible to control.

Method used

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  • Butyl rubber composition and method for producing butyl rubber adhesive tape by using same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A butyl rubber composition for producing butyl rubber adhesive tape, based on the total weight of the composition, it consists of the following components: butyl rubber 24.1%; styrene-isoprene-styrene embedded Segment copolymer 6.0%; processing oil 15.1%; tackifying resin 30.2%; zinc oxide 0.2%; sulfur 0.3%; carbon black 9.0%; clay 15.0%; alkylphenol antioxidant 0.2%.

Embodiment 2

[0032] A butyl rubber composition for producing butyl rubber adhesive tape, based on the total weight of the composition, it consists of the following components: butyl rubber 24.1%; styrene-butadiene-styrene block Copolymer 6.0%; processing oil 10.1%; butyl rubber with a molecular weight of 1000-3000 5%; tackifying resin 30.2%; zinc oxide 0.2%; sulfur 0.3%; carbon black 9.0%; clay 15.0%; alkylphenol antioxidant Agent 0.2%.

Embodiment 3

[0034] The present embodiment provides a kind of butyl rubber adhesive tape, which is produced according to the following method by the butyl rubber composition of embodiment 1:

[0035] (1) Add each raw material to the feeder of the screw extruder, control the temperature of each section of the twin-screw extruder, the temperature of the feeding section is room temperature ~ 40°C, the temperature of the compression section is 90 ~ 100°C, and the metering section is 80 ~ 90°C , the melt pressure is 0.2-0.3MPa, the host speed is 200-300rpm, and the processing time is 30min. Tape is obtained through the die of the extruder, and a strip-shaped semi-finished product is obtained from the roll;

[0036] (2) Place the semi-finished product in step (1) at 120-160°C, heat-preserve and vulcanize for 3 hours to obtain the adhesive tape. The properties of the adhesive tape are shown in Table 1.

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Abstract

The invention discloses a butyl rubber composition and a method for producing a butyl rubber adhesive tape by using the same. Based on the total weight of the composition, the butyl rubber composition comprises the following components: 15 to 40 percent of butyl rubber matrix, 5 to 12 percent of styrenic thermoplastic elastomer, 8 to 20 percent of plasticizer, 20 to 40 percent of tackifying resin, 0.2 to 2 percent of vulcanizing agent and 10 to 30 percent of inorganic filler. The method for producing the adhesive tape comprises the steps of extrusion molding and vulcanizing. The adhesive tapeprepared by the butyl rubber composition has high peel strength and adhesiveness stability, and the process for producing the adhesive tape is simple and easy to control and is suitable for popularization and application.

Description

technical field [0001] The present invention relates to a butyl rubber composition for producing adhesive tapes and a method for producing adhesive tapes from the composition. Background technique [0002] Butyl rubber waterproof sealing adhesive tape has excellent air tightness, high temperature resistance and good adhesion at low temperature. It is suitable for lap joint sealing of polymer waterproof membranes, and waterproof air at seams in color steel and sun board projects. Sealing and waterproofing of construction joints of subway tunnel structures, etc. [0003] As we all know, the biggest disadvantage of butyl rubber when used as an adhesive is that it is prone to cold flow, that is, the cohesive strength is low, and a series of methods must be adopted in the production process to improve the cohesive strength, that is, the stickiness index. In addition, the peel strength value is also an indicator that must be considered for butyl rubber waterproof sealing adhesive...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J123/22C09J123/28C09J153/02C09J153/00C09J11/06C09J11/04C09J7/00
Inventor 董洲杨胜王芳孟赟范雯静
Owner 中建材苏州防水研究院有限公司
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