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High temperature resistant nitrile rubber and its application, non-marking segmental vulcanization method of sealing rubber products and main drive sealing ring

A technology of nitrile rubber and sealing rubber, applied in the rubber field, can solve the problems of insufficient reliability of sealing performance, easy entry of foreign objects on the sealing surface, severe vibration, etc., and achieve excellent low compression set performance, excellent wear resistance, Mooney Low viscosity effect

Active Publication Date: 2022-03-15
BEIJING RES & DESIGN INST OF RUBBER IND +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main drive seal of a large shield machine will encounter problems such as high pressure, severe vibration, large shaft runout, insufficient lubrication, easy entry of foreign matter on the sealing surface, and insufficient reliability of sealing performance during the use of new products. During the development of new products, To consider the emergence of the above problems

Method used

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  • High temperature resistant nitrile rubber and its application, non-marking segmental vulcanization method of sealing rubber products and main drive sealing ring
  • High temperature resistant nitrile rubber and its application, non-marking segmental vulcanization method of sealing rubber products and main drive sealing ring
  • High temperature resistant nitrile rubber and its application, non-marking segmental vulcanization method of sealing rubber products and main drive sealing ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This embodiment provides a high temperature resistant nitrile rubber, the raw material composition of which is shown in Table 1.

[0045] Table 1

[0046]

[0047] Wherein, composite carbon black is the combination of fine-grained carbon black and coarse-grained carbon black, fine-grained carbon black is N220, and coarse-grained carbon black is N660, and the respective content of the two is 33 parts, 33 parts, two The weight ratio of the two is 1:1;

[0048] In the composite antiaging agent, the weight ratio of antiaging agent 4010NA, antiaging agent 4020, antiaging agent 246, antiaging agent TMQ and antiaging agent MB is 1:1:1:1:1;

[0049]In the composite tackifying resin, the weight ratio of coumarone resin, SP-1068 resin and phenolic resin is 1:1:1;

[0050] In the compound plasticizer, the weight ratio of plasticizer DOS and plasticizer DBP is 2:1;

[0051] In the composite accelerator, the weight ratio of accelerator DTDM, accelerator DM, and accelerator TMT...

Embodiment 2

[0060] This embodiment provides a high temperature resistant nitrile rubber, the raw material composition of which is shown in Table 2.

[0061] Table 2

[0062]

[0063] Wherein, composite carbon black is the combination of fine-grained carbon black and coarse-grained carbon black, fine-grained carbon black is N330, and coarse-grained carbon black is N550, and the respective contents of the two are respectively 34 parts, 34 parts, two The weight ratio of the two is 1:1;

[0064] In the composite antiaging agent, the weight ratio of antiaging agent 4010NA, antiaging agent 4020, antiaging agent 246, antiaging agent TMQ and antiaging agent MB is 1:1:1:1:1;

[0065] In the composite tackifying resin, the weight ratio of coumarone resin, SP-1068 resin and phenolic resin is 1:1:1;

[0066] In the compound plasticizer, the weight ratio of plasticizer DOS and plasticizer DBP is 2:1;

[0067] In the composite accelerator, the weight ratio of accelerator DTDM, accelerator DM, and...

Embodiment 3

[0076] This embodiment provides a high temperature resistant nitrile rubber, the raw material composition of which is shown in Table 3.

[0077] table 3

[0078]

[0079] Wherein, composite carbon black is the combination of fine-grained carbon black and coarse-grained carbon black, fine-grained carbon black is N220, and coarse-grained carbon black is N774, and the respective contents of the two are respectively 32.5 parts, 32.5 parts, two The weight ratio of the two is 1:1;

[0080] In the composite antiaging agent, the weight ratio of antiaging agent 4010NA, antiaging agent 4020, antiaging agent 246, antiaging agent TMQ and antiaging agent MB is 1:1:1:1:1;

[0081] In the composite tackifying resin, the weight ratio of coumarone resin, SP-1068 resin and phenolic resin is 1:1:1;

[0082] In the compound plasticizer, the weight ratio of plasticizer DOS and plasticizer DBP is 2:1;

[0083] In the composite accelerator, the weight ratio of accelerator DTDM, accelerator DM,...

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Abstract

The invention provides a high-temperature-resistant nitrile rubber and its application, a traceless segmental vulcanization method for sealing rubber products, and a main drive sealing ring. The raw material composition of the high temperature resistant nitrile rubber includes: nitrile rubber, 100 parts, composite carbon black, 45‑90 parts, zinc oxide, 3‑5 parts, stearic acid, 1‑3 parts, composite antioxidant, 2‑90 parts 5 parts, silicon dioxide, 25‑45 parts, coupling agent, 1.2‑2.5 parts, composite tackifying resin, 5‑10 parts, composite plasticizer, 3‑5 parts, sulfur, 2‑4 parts, composite accelerator dosage, 1-4 servings. The rubber material formula of the present invention has a low Mooney viscosity and can be used in a non-marking segmental vulcanization process; the temperature resistance can reach 125°C, and it has excellent wear resistance and low compression set performance. The seal ring of the shield machine produced thereby It has good sealing performance and service life.

Description

technical field [0001] The invention relates to a high-temperature-resistant nitrile rubber and its application, a traceless segmental vulcanization method for sealing rubber products and a main drive sealing ring, belonging to the technical field of rubber. Background technique [0002] Shield machine and TBM (full-face hard rock tunnel boring machine) main drive sealing technology is mainly mastered by Germany, Japan, Italy and other countries, and my country mainly relies on imports. The main drive seal ring of the shield machine is the "immune system" of the shield machine. Once there is a problem with the main drive seal, the shield machine will be paralyzed and unable to operate, and the seal of the shield machine is difficult to replace, and the replacement cost is very high. The life and reliability of the owner drive seal is very important. [0003] The current best vulcanization process for the main drive seal of the shield machine is a non-marking segmental vulca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/02C08L45/02C08L61/06C08L61/08C08K3/04C08K3/36B29D99/00F16J15/3204F16J15/3284
CPCC08L9/02B29D99/0053F16J15/3284F16J15/3204C08L2205/035C08L2205/025C08L2201/08C08K2201/014C08L45/02C08L61/06C08K3/04C08K3/36
Inventor 丁攀攀贾连辉王静马良清白骏烈孙志洪张斌龙伟漾苍飞飞李佳恒徐立季美琴
Owner BEIJING RES & DESIGN INST OF RUBBER IND
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