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Self-vulcanized chloroprene rubber/natural rubber lining composition and application method thereof

A technology of rubber lining and neoprene, applied in the fields of rubber polymer materials and new materials, can solve the problems of difficult rubber lining and unsuitability to move, improve the service life, improve the softness, and solve the problems of bubbling and warping. Effect

Active Publication Date: 2020-04-03
SHANGHAI SHUANGPU ANTICORROSION RUBBER LINING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims to solve the on-site rubber lining problem of the existing neoprene lining, especially the rubber lining problem of complex equipment such as large-scale, unsuitable to move and perforated plates

Method used

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  • Self-vulcanized chloroprene rubber/natural rubber lining composition and application method thereof
  • Self-vulcanized chloroprene rubber/natural rubber lining composition and application method thereof
  • Self-vulcanized chloroprene rubber/natural rubber lining composition and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Neoprene / natural rubber is 90 / 10, and the remaining materials are about the lower limit of the design formula ratio, and then implement according to the following steps.

[0033] (1) According to the volume of the internal mixer, weigh each material according to the ratio of scheme 1 in Table 1

[0034]

[0035]

[0036] (2) After the natural rubber is masticated in the internal mixer for 1 min, 0.5% peptizer is added, and the mastication is continued until the rubber is discharged into the hopper at 85°C, then transferred to the open mixer, and pressed into slices, cut into small rolls, and the weight of each roll is according to the weight specified in Scheme 1, and it is used for mixing after parking for 8 hours;

[0037] (3) Add the parked natural rubber plastic compound to the internal mixer, and then add the neoprene rubber to the internal mixer after banburying for 0.5-1min, and banbury for 1-3min. Add the materials in item 11 to the banburying, and discha...

Embodiment 2

[0045] Compared with Example 1, the ratio of chloroprene rubber and natural rubber is kept constant, and the amount of materials used in Items 3 to 15 is about the upper limit of the design ratio.

Embodiment 3

[0047] Compared with Example 2, the ratio of neoprene / natural rubber is changed to: 80 / 20, and other conditions remain unchanged.

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Abstract

The invention discloses a self-vulcanized chloroprene rubber / natural rubber lining composition and an application method thereof. The lining composition comprises, by weight, 80-90 parts of chloroprene rubber and 10-20 parts of natural rubber, and a zinc oxide-low-temperature overspeed accelerator vulcanization system and a sulfur-free vulcanization system are adopted for co-vulcanization. The lining is adhered to a device, and can be self-vulcanized at 25-40 DEG C without heating vulcanization, and can be pasted and constructed on the device site; the lining material is softer than a pre-vulcanized chloroprene rubber lining and softer than a chloroprene rubber lining free of natural rubber, so the lining material is suitable for pasting a large-scale device, an immovable device and complex devices with rib plates and perforated plates; and additionally, the product has the advantages of excellent corrosion resistance, excellent aging resistance, good oil resistance, excellent cohesiveness and very high initial cohesive force, and is suitable for corrosion prevention of nuclear power devices with a very long service life and rubber lining and onsite repairing of the complex devicessuch as perforated plates.

Description

technical field [0001] The invention belongs to the technical field of new materials, in particular to the field of rubber polymer materials, in particular to a self-vulcanizing chloroprene rubber / natural rubber lining composition and an application method thereof. Background technique [0002] In recent years, anti-corrosion and wear-resistant rubber linings have not only been widely used in chemical, fertilizer, steel and thermal power industries, but also in emerging industries such as seawater desalination and nuclear power equipment. With the enlargement of the equipment and the complexity of the internal structure, there are higher requirements for the suitability and vulcanization characteristics of the rubber lining. [0003] At present, anti-corrosion rubber linings are divided into vulcanization methods, mainly including: [0004] (1) Heated vulcanized lining, which is characterized in that it needs to be heated and pressurized after being pasted on the equipment;...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L11/00C08L7/00C08L91/06C08K13/02C08K3/22C08K5/40C08K5/405C08K5/39
CPCC08L11/00C08K2003/2296C08L2201/08C08L2205/035C08L2205/025C08L2205/02C08K2201/014C08L7/00C08L91/06C08K13/02C08K3/22C08K5/40C08K5/405C08K5/39
Inventor 姚建明刘馨元孙迪彭高桥杨正龙
Owner SHANGHAI SHUANGPU ANTICORROSION RUBBER LINING
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