High-pressure lap-joint-free double-airbag rubber dam and production process thereof

A production process, double air bag technology, applied in dams, sea area projects, water conservancy projects, etc., can solve problems such as vulcanization out of sync, increase the difficulty of sealing, etc., achieve high compressive strength, easy operation of the production process, and good production stability Effect

Active Publication Date: 2015-02-11
TIELIN ERFAN RUBBER R & D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the rubber airbag is not inflated, the size of the flat airbag is 4~6×2~4m, and the water-retaining height can only reach about 4 meters; the airbag reserves an open end, which increases the difficulty of sealing during installation; its inner layer The rubber (inner liner) is butyl rubber, and there is a situation that the vulcanization is not synchronized with the outer cover rubber and the middle rubber layer

Method used

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  • High-pressure lap-joint-free double-airbag rubber dam and production process thereof
  • High-pressure lap-joint-free double-airbag rubber dam and production process thereof
  • High-pressure lap-joint-free double-airbag rubber dam and production process thereof

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Experimental program
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Effect test

Embodiment 1

[0034] On the 12.3×Φ4.0m drum steel core, according to the process described in the specific implementation method, 8 layers of high-strength cord skeletons are staggered at 90-degree angles to form 45-degree angles, and the diameter of the cord fibers is 0.9mm, and the single fiber is torn off Strength 500N. When the airbag is not inflated, the flat size is 12×6m.

Embodiment 2

[0036] On the 12.3×Φ4.0m drum steel core, according to the process described in the specific implementation method, 6 layers of high-strength cord skeletons are interlaced at 90° angles to form 56° angles, the diameter of the steel wire rope is 0.5mm, and the single tearing strength is 1000N. When the airbag is not inflated, the flat size is 12×6m.

Embodiment 3

[0038] On the drum steel core of 6.8×Φ2.7m, according to the process described in the specific implementation method, 6 layers of high-strength cord skeletons are interlaced at 90 degrees to each other at an angle of 51 degrees, and the diameter of the cord fibers is 1.2mm, and the single fiber is torn off Strength 500N. When the airbag is not inflated, the flat size is 6×4m.

[0039] From Table 1, Table 2, Table 3 and the results of step 7 in the specific embodiment, it can be seen that the high-pressure, high-strength non-overlapping double-airbag rubber dam and the production process of the present invention are easy to operate and can meet the requirements of high-pressure, high-strength The one-time molding and co-vulcanization of the non-overlapping double-airbag rubber dam has good production stability; the large-scale rubber airbags produced have high compressive strength (the operating pressure is above 1.0MPa), and the water-retaining height can reach 8 meters....

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Abstract

The invention discloses a high-pressure lap-joint-free double-airbag rubber dam and a production process thereof, and relates to a large-sized rubber product with a continuous and high-strength skeleton material. The size of a flat airbag which is not inflated is (18mm-25mm)*(6mm-12mm)*(4mm-6mm), a fixed edge end is in a wedged seal, an inflating nozzle is arranged on the middle part of the flat airbag, and a water stop height is 4m to 8m. The high-pressure lap-joint-free double-airbag rubber dam consists of EPDM outer coverage adhesive with excellent weather resistance and reinforced activated by tetrapod-like zinc oxide whiskers, a skeleton layer as well as a middle rubber layer consisting of anti-aging maleic anhydride modified chlorinated polyethylene rubber having good gluing performance with the skeleton layer and an airtight inner rubber layer consisting of modified butyl rubber with excellent air tightness. The production process is simple in operation, capable of satisfying the one-step molding and vulcanizing of a high-pressure high-strength large-sized seamless rubber product and good in production stability; the produced large-sized rubber airbag is high in pressure resisting strength, the application pressure can reach more than 1.0MPa, and the service life is more than 50 years. The high-pressure lap-joint-free double-airbag rubber dam is mainly used for a pneumatic steel-shield rubber dam.

Description

technical field [0001] The invention relates to a high-pressure non-overlapping double-airbag rubber dam and a production process thereof, and relates to a large-scale rubber product with continuous high-strength skeleton material and a production process thereof. Especially suitable for pneumatic steel shield rubber dams. Background technique [0002] High-strength rubber products are mostly reinforced by skeleton materials. And heat vulcanization by means of integral molding and pressure. However, large-scale rubber products, especially closed products, are difficult to be produced by thermal vulcanization with integral molding and overall pressure, because the process requires a large flat vulcanizer or vulcanization tank. A typical large-scale rubber product is a rubber dam. The preparation process is to first prepare a vulcanized rubber film, and then use a heat sealing machine to heat-press the vulcanized rubber film to form a rubber dam, that is, a "seamless" rubber...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/10E03B7/02
CPCE02B7/005Y02A10/11
Inventor 陈尔凡付耕瑜
Owner TIELIN ERFAN RUBBER R & D CO LTD
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