Low-temperature low-pressure vulcanized rubber lining composition and application method thereof

A vulcanized rubber, low temperature and low pressure technology, which is applied in the field of rubber polymer materials and materials, can solve the problems of poor density of rubber lining, decline of anti-corrosion performance, poor bonding strength, etc., to achieve stable performance, improve stiffness, and avoid bubbling Effect

Active Publication Date: 2019-03-26
SHANGHAI SHUANGPU ANTICORROSION RUBBER LINING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the surface of the application, this process is used for rubber lining in cold winter or under high humidity conditions, and the risk of micropores and air bubbles during vulcanization is greater, because when the rubber reaches a certain degree of vulcanization, the water vapor in the rubber lining and The solvent that has not evaporated will expand after being heated, and will produce micropores and air bubbles, resulting in poor compactness, poor bonding strength, and reduced anti-corrosion performance of the rubber lining.

Method used

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  • Low-temperature low-pressure vulcanized rubber lining composition and application method thereof
  • Low-temperature low-pressure vulcanized rubber lining composition and application method thereof
  • Low-temperature low-pressure vulcanized rubber lining composition and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-7

[0054] Preparing rubber according to the rubber lining composition formula (parts by weight) of table 1:

[0055] Table 1: Composition formulations of Examples 1-7

[0056]

[0057]

[0058] Wherein, the natural rubber includes one or more of standard natural rubber, smoked sheet rubber and constant-viscosity natural rubber. SBR is a non-polluting styrene-butadiene rubber, which has good compatibility with natural rubber and high styrene. High styrene refers to high styrene rubber with a styrene content of 60% to 80%. Low-pressure vulcanization masterbatch is a masterbatch made by blending EPDM / EVA (ethylene-propylene rubber / ethylene-vinyl acetate) with nano-calcium oxide and surface active dispersing aids. The content of nano-calcium oxide is 70-80%, and the content of EPDM / EVA is 15-26%. The pre-dispersed zinc oxide masterbatch is selected from active zinc oxide masterbatch and nanometer zinc oxide masterbatch. The pre-dispersed accelerator micelle is selected from...

Embodiment 1

[0083]After the SP-2L adhesive used for the rubber paste obtained in Example 1 is changed to SP-2 adhesive, it is still vulcanized according to the vulcanization process of Example 1-1.1-2, 1-3, and the bonding strength of the obtained lining is respectively 5MPa , 6.5MPa, 4MPa. This shows that the two-component SP-2L adhesive used in the present invention is more suitable for low-temperature and low-pressure vulcanization than the commonly used SP-2 high-quality natural rubber adhesive on the market, which is conducive to ensuring the bonding strength. Because in the low-temperature and low-pressure vulcanization state, the vulcanization speed of SP-2L with polyisocyanate is faster, which basically matches the vulcanization speed of the rubber sheet.

[0084] Table 3: The rubber vulcanization process and detection results prepared by the rubber lining compositions of Examples 2, 3, 4, 5, 6, and 7 are as follows:

[0085]

[0086] It can be seen that the rubber prepared ac...

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Abstract

The invention belongs to the technical field of a material, and particularly relates to the field of a rubber high polymer material. The invention also discloses a low-temperature low-pressure vulcanized rubber lining composition and an application method thereof. The composition is prepared from the following ingredients in parts by weight: 60 to 80 weight parts of natural rubber, 20 to 45 weightparts of sulphur, 1 to 20 weight parts of butadiene styrene rubber, 1 to 20 weight parts of high styrene, 3 to 10 weight parts of low pressure vulcanized masterbatch, 5 to 10 weight parts of predispersed zinc oxide masterbatch, 10 to 30 weight parts of crystalline flake graphite, 10 to 30 weight parts of filling materials and 2.5 to 5.0 weight parts of pre-dispersing promoter masterbatch. The rubber of low-temperature low-pressure vulcanized rubber lining composition can be vulcanized under the conditions of low temperature and low pressure; the vulcanization problem of super-big-dimension non-pressure-resistant equipment and super-big-dimension pressure-resistant non-tank equipment is solved.

Description

technical field [0001] The invention belongs to the field of material technology, in particular to the field of rubber polymer materials, in particular to a low-temperature and low-pressure vulcanized rubber lining composition and an application method thereof. Background technique [0002] At present, the vulcanization methods of hard rubber lining are mainly: [0003] (1) Vulcanization tank vulcanization, most of the vulcanization conditions are: temperature 130-143 ° C, pressure 0.3-0.6 MPa. It is only suitable for small and medium-sized equipment that can enter the vulcanization tank. [0004] (2) Hot water vulcanization, 95 ~ 100 ° C, at least 1 meter of water pressure, only a few domestic manufacturers of rubber linings can be hot water vulcanization. This vulcanization method wastes a lot of water resources. [0005] (3) Pre-vulcanization, that is, pre-vulcanizing the rubber plate on equipment such as vulcanization tanks, flat vulcanizers, and drum vulcanizers, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/06C08L23/16C08L23/08C08K3/06C08K3/22C08K3/04C09J5/04
CPCC08K2003/2206C08K2201/011C08L7/00C08L2205/035C09J5/04C08L9/06C08L23/16C08L23/0853C08K3/06C08K3/22C08K3/04
Inventor 刘馨元姚建明彭高桥杨正龙孙迪朱婧
Owner SHANGHAI SHUANGPU ANTICORROSION RUBBER LINING
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