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Preparation method of anti-aging foamed styrene-butadiene rubber

A technology of styrene-butadiene rubber and anti-aging, applied in the field of preparation of foamed styrene-butadiene rubber, can solve problems such as affecting the performance of foamed materials, and achieve the effects of improving anti-aging performance, improving activity and excellent anti-aging performance.

Inactive Publication Date: 2020-08-14
陈胜男
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The application contains many types of raw materials, and it is difficult to distribute the ingredients evenly in the product when forming the foamed material, which in turn affects the performance of the foamed material

Method used

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  • Preparation method of anti-aging foamed styrene-butadiene rubber
  • Preparation method of anti-aging foamed styrene-butadiene rubber

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preparation example Construction

[0023] A preparation method of aging-resistant foamed styrene-butadiene rubber, comprising the steps of:

[0024] The first step is to prepare the raw materials according to the following parts by weight: 90-100 parts of styrene-butadiene rubber, 45-50 parts of modified white carbon black, 8-10 parts of carbon black, 1.6-2 parts of zinc oxide, 12-2 parts of coupling agent 15 parts, accelerator 3-4 parts, sulfur 1.8-2 parts, foaming agent 2.7-3 parts;

[0025] The coupling agent is silane coupling agent Si-69; the accelerator is accelerator TMTD; the foaming agent is OBSH-75;

[0026] The second step is to turn on the internal mixer and set the temperature to 100°C. When the temperature of the instrument reaches the temperature, add styrene-butadiene rubber to the internal mixer for 13-15 minutes, and then add modified white carbon black, zinc oxide and Mixing with coupling agent for 5-6 minutes, then adding foaming agent, sulfur and accelerator to continue mixing for 5-6 minu...

Embodiment 1

[0038] A preparation method of aging-resistant foamed styrene-butadiene rubber, comprising the steps of:

[0039] The first step, prepare each raw material according to the following parts by weight: 90 parts of styrene-butadiene rubber, 45 parts of modified silica, 8 parts of carbon black, 1.6 parts of zinc oxide, 12 parts of coupling agent, 3 parts of accelerator, 1.8 parts of sulfur part, foaming agent 2.7 parts;

[0040] The second step is to turn on the internal mixer and set the temperature to 100°C. When the temperature of the instrument reaches the temperature, add styrene-butadiene rubber to the internal mixer for 13 minutes, and then add modified white carbon black, zinc oxide and coupling Compound mixing for 5 minutes, then add foaming agent, sulfur and accelerator to continue banburying for 5 minutes to obtain the blended rubber;

[0041] Step 3: After the blended rubber is parked at room temperature for 24 hours, set the temperature of the mill to 80°C, mill the ...

Embodiment 2

[0044] A preparation method of aging-resistant foamed styrene-butadiene rubber, comprising the steps of:

[0045] The first step, prepare each raw material according to the following parts by weight: 95 parts of styrene-butadiene rubber, 48 parts of modified silica, 9 parts of carbon black, 1.8 parts of zinc oxide, 13.5 parts of coupling agent, 3.5 parts of accelerator, 1.9 parts of sulfur part, foaming agent 2.8 parts;

[0046] The second step is to turn on the internal mixer and set the temperature to 100°C. When the temperature of the instrument reaches the temperature, add styrene-butadiene rubber to the internal mixer for 14 minutes, and then add modified white carbon black, zinc oxide and coupling Compound mixing for 5.5 minutes, then adding foaming agent, sulfur and accelerator to continue banburying for 5.5 minutes to obtain a blended rubber;

[0047] Step 3: After the blended rubber is parked at room temperature for 24 hours, set the temperature of the mill to 80°C, ...

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Abstract

A preparation method of anti-aging foamed styrene-butadiene rubber is disclosed. The preparation method comprises the following steps: step 1, preparing materials comprising 90-100 parts of styrene butadiene rubber, 45-50 parts of modified white carbon black, 8-10 parts of carbon black, 1.6-2 parts of zinc oxide, 12-15 parts of a coupling agent, 3-4 parts of an accelerant, 1.8-2 parts of sulfur and 2.7-3 parts of a foaming agent; step 2, internal mixing; 3, mixing; 4, vulcanizing and foaming. According to the invention, the modified white carbon black is adopted to reinforce the foamed rubber;the surface of the white carbon black is grafted with a modified anti-aging agent through the silane coupling agent, a non-polar silane molecular chain and a modified anti-aging agent molecular chainare attached to the surfaces of white carbon black particles to form an organic layer, so that the compatibility with a rubber matrix can be improved, the agglomeration between the white carbon blackcan be weakened, and the white carbon black is uniformly distributed in the rubber matrix; besides, the modified anti-aging agent molecules have excellent anti-aging performance and are uniformly distributed in the rubber matrix along with the white carbon black, so that the anti-aging performance is fully exerted.

Description

technical field [0001] The invention belongs to the field of rubber material preparation, and in particular relates to a preparation method of aging-resistant foamed styrene-butadiene rubber. Background technique [0002] The honeycomb structure of rubber products gives it some valuable properties, such as very low density, high insulating capacity and good compressibility. Its applications include building materials (sound insulation, sealing), automotive components (anti-vibration, sealing), household items (sponges, cushions), and sports and leisure goods. In the process of making foamed rubber products, a complex interaction of rubber compounds and a gas takes place. At the beginning of the foaming process, gas dissolves in the polymer. The supersaturation and pressure drop or temperature rise then lead to separation and a stable foam structure is formed. [0003] The Chinese invention patent with the patent number CN201510436711.8 discloses a closed-cell secondary fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08K13/06C08K9/06C08K9/04C08K3/36C08K3/22C08K3/06C08K5/548C08K5/40C08J9/10
CPCC08J9/0033C08J9/0042C08J9/0066C08J9/009C08J9/0095C08J9/105C08J2203/04C08J2309/06C08K3/06C08K3/36C08K5/40C08K5/548C08K9/04C08K9/06C08K13/06C08K2003/2296
Inventor 陈胜男陈奕汲陈庆
Owner 陈胜男
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