Rubber composition based on halogenated butyl rubber, and vulcanized rubber and preparation method and application thereof

A technology of halogenated butyl rubber and rubber composition, applied in the field of vulcanized rubber, the application of vulcanized rubber in tires, and the preparation of vulcanized rubber, which can solve the problems of affecting air tightness and high cost of halogenated butyl rubber, and improve the pressure holding performance and cost. Low, the effect of improving airtight performance

Inactive Publication Date: 2020-05-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Halogenated butyl rubber has excellent airtight performance and has become the first choice for inner liner rubber. However, the cost of halogenated butyl rubber is relatively high. Currently, the basic compound of inner liner in the tire industry mainly uses halogenated butyl rubber and natural rubber. Use to reduce cost, but this affects airtightness

Method used

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  • Rubber composition based on halogenated butyl rubber, and vulcanized rubber and preparation method and application thereof
  • Rubber composition based on halogenated butyl rubber, and vulcanized rubber and preparation method and application thereof
  • Rubber composition based on halogenated butyl rubber, and vulcanized rubber and preparation method and application thereof

Examples

Experimental program
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preparation example Construction

[0064] In order to specifically illustrate the method for preparing vulcanized rubber of the present invention, a preferred embodiment is provided below for illustration:

[0065] (1) Put component A1 containing basic rubber in an internal mixer with a rotating speed of 50-120rpm, an initial mixing temperature of 50-70°C, and a raw rubber masticating time of 0.1-1min for mastication to obtain a piece of masterbatch;

[0066] (2) Add the first section of masterbatch and component B1 containing carbon black, anhydrite and softener, and optionally contain anti-aging agent and activator to carry out the second mixing in the internal mixer, discharge and park for 3- 5 hours to obtain the second-stage masterbatch;

[0067] (3) Set the rotational speed of the internal mixer to 50-100rpm, and the initial mixing temperature to 25-50°C. After masticating the second-stage masterbatch for 0.5-1.5 minutes, add a vulcanization accelerator, a vulcanizing agent, and any Select the component...

Embodiment 1

[0095] The formulation of this embodiment is shown in Table L1.

[0096] Table L1

[0097]

[0098] Preparation:

[0099] (1) Add bromobutyl rubber into the internal mixer, set the rotation speed at 80rpm, the initial mixing temperature at 60°C, and the raw rubber masticating time at 0.5min to obtain a section of masterbatch;

[0100](2) Add carbon black, anhydrite, stearic acid, anti-aging agent and softener into the internal mixer, and mix with the first section of masterbatch. The mixing time is 5min, and the debinding temperature is 120°C. And stop for 4 hours to obtain the second stage masterbatch;

[0101] (3) Set the rotating speed of the internal mixer to 80rpm, and the initial mixing temperature is 40°C. After the second-stage masterbatch is masticated for 1min, zinc oxide, vulcanizing agent, and vulcanization accelerator are added for mixing. The mixing temperature is 110°C, the mixing time is 5 minutes, and the final mixing rubber is obtained by discharging; ...

Embodiment 2

[0104] The formulation of this example is shown in Table L2.

[0105] Table L2

[0106]

[0107] Preparation:

[0108] (1) Add bromobutyl rubber and natural rubber into the internal mixer, set the rotation speed to 80rpm, the initial mixing temperature to 60°C, and the raw rubber mastication time to 0.5min to obtain a section of masterbatch;

[0109] (2) Add carbon black, anhydrite, activator and softener into the internal mixer, and mix with the first section of masterbatch. The mixing time is 6min, the debinding temperature is 130°C, and the material is discharged and parked for 4 hours , to obtain the second-stage masterbatch;

[0110] (3) Set the rotational speed of the internal mixer to 80rpm, and the initial mixing temperature to 40°C. After masticating the second-stage masterbatch for 1min, add a vulcanizing agent and a vulcanization accelerator for mixing, and the mixing temperature is 105°C. The mixing time is 6min, and the final mixing rubber is obtained by dis...

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Abstract

The invention relates to the field of rubber, and discloses a rubber composition based on halogenated butyl rubber, and vulcanized rubber and a preparation method and application of thereof. The composition contains a component A, a component B and a component C which are independently stored or stored in a mixed mode, wherein the component A contains base rubber, and the base rubber is halogenated butyl rubber or a mixture of the halogenated butyl rubber and natural rubber; the component B contains carbon black, anhydrite, an activating agent and a softening agent, and optionally contains ananti-aging agent; and the component C contains a vulcanizing agent and a vulcanization accelerator. The vulcanized rubber prepared from the rubber composition based on the halogenated butyl rubber provided by the invention can improve the airtight performance of a rubber material.

Description

technical field [0001] The invention relates to the field of rubber, in particular to a rubber composition based on halogenated butyl rubber, a method for preparing vulcanized rubber, the vulcanized rubber prepared by the method, and the application of the vulcanized rubber in tires. Background technique [0002] The impact of the inner layer of the tire on the performance of the tire is particularly important. The main function of the inner layer is to prevent the leakage of compressed air in the tire, maintain the stability of the tire pressure, and ensure the long-term performance and durability of the tire. [0003] Halogenated butyl rubber has excellent airtight performance and has become the first choice for inner liner rubber. However, the cost of halogenated butyl rubber is relatively high. Currently, the basic compound of inner liner in the tire industry mainly uses halogenated butyl rubber and natural rubber. Use to reduce cost, but this will affect airtightness. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/02C08K13/02C08K3/22C08K3/04C08K5/09C08K3/30C08K5/18
CPCC08K3/04C08K3/22C08K3/30C08K5/09C08K5/18C08K13/02C08K2003/2296C08K2003/3045C08L2201/14C08L2312/00C08L15/02
Inventor 王雷雷刘苹解希铭李绍宁段海东乔勋昌刘翠云
Owner CHINA PETROLEUM & CHEM CORP
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