Preparation method of environment-friendly foamed styrene-butadiene rubber

A styrene-butadiene rubber, environmentally friendly technology, applied in the field of preparation of environmentally friendly foamed styrene-butadiene rubber, can solve the problems of many types of raw materials, difficult component distribution, and affecting the performance of foamed materials, so as to inhibit interaction and improve Mechanical loss performance, the effect of improving the flame retardant effect

Inactive Publication Date: 2020-08-18
陈胜男
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the application can improve the flame retardancy and environmental protection performance of styrene-butadiene rubber by reducing the content of halogen, the application contains many types of raw materials. to the properties of the foamed material

Method used

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  • Preparation method of environment-friendly foamed styrene-butadiene rubber

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preparation example Construction

[0025] A preparation method of environment-friendly foamed styrene-butadiene rubber. The foamed styrene-butadiene rubber is made of the following raw materials in parts by weight: 90-100 parts of modified styrene-butadiene rubber, 16-20 parts of natural rubber, 45-50 parts of white carbon black 1.6-2 parts of zinc oxide, 3-4 parts of accelerator, 1.8-2 parts of sulfur, 2.7-3 parts of foaming agent;

[0026] Among them, the accelerator is the accelerator TMTD; the foaming agent is OBSH-75;

[0027] The flame retardant was prepared as follows:

[0028] (1) Diethyl chlorophosphate is dissolved in acetonitrile to form a phosphorus-containing solution with a concentration of 0.8mol / L;

[0029] (2) Dissolve 2.0g of 2,4-diaminotoluene and 3.3g of triethylamine in 180-200mL of acetonitrile, stir and mix evenly, pass nitrogen gas for 15min and control the solution temperature at 3-4°C. Slowly drop 38-40mL of phosphorus-containing solution into the mixture under nitrogen, keep the ice...

Embodiment 1

[0041] An environmentally friendly foamed styrene-butadiene rubber is made of the following raw materials in parts by weight: 90 parts of modified styrene-butadiene rubber, 16 parts of natural rubber, 45 parts of white carbon black, 1.6 parts of zinc oxide, 3 parts of accelerator, 1.8 parts of sulfur, 2.7 parts of blowing agent;

[0042] The rubber is made by the following steps:

[0043] The first 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 the modified styrene-butadiene rubber and natural rubber to the internal mixer for 13 minutes, and then add white carbon black and zinc oxide Banburying for 5 minutes, then adding foaming agent, sulfur and accelerator to continue banburying for 5 minutes to obtain a blended rubber;

[0044] In the second step, after the blended rubber is parked at room temperature for 24 hours, set the temperature of the mill to 80°C, and carry out milling of t...

Embodiment 2

[0047] An environmentally friendly foamed styrene-butadiene rubber is made of the following raw materials in parts by weight: 95 parts of modified styrene-butadiene rubber, 18 parts of natural rubber, 48 parts of white carbon black, 1.82 parts of zinc oxide, 3.5 parts of accelerator, 1.9 parts of sulfur, 2.8 parts of blowing agent;

[0048] The rubber is made by the following steps:

[0049] The first 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 the modified styrene-butadiene rubber and natural rubber to the internal mixer for 14 minutes, and then add white carbon black and zinc oxide. Banburying for 5.5 minutes, then adding foaming agent, sulfur and accelerator to continue banburying for 5.5 minutes to obtain a blended rubber;

[0050] In the second step, after the blended rubber is parked at room temperature for 24 hours, set the temperature of the mill to 80°C, and carry out mill...

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Abstract

The invention discloses a preparation method of environment-friendly foamed styrene-butadiene rubber. The foamed styrene-butadiene rubber is prepared from the following raw materials in parts by weight: 90-100 parts of modified styrene-butadiene rubber; 16-20 parts of natural rubber; 45-50 parts of white carbon black; 8-10 parts of carbon black; 1.6-2 parts of zinc oxide; 3-4 parts of an accelerant; 1.8-2 parts of sulfur; and 2.7-3 parts of a foaming agent. The preparation method comprises the following steps of: step 1, performing internal mixing; 2, performing mixing with a mixing mill; and3, performing vulcanizing. A self-synthesized flame retardant is adopted, is a P-N synergistic flame retardant, not only has excellent flame retardant property, but also has relatively strong interaction with a rubber matrix, meets the environmental protection requirement, and improves the environmental protection property, high efficiency and durability of the flame retardant property of the material; the styrene-butadiene rubber is modified, an epoxy group and a flexible molecular chain are introduced to the molecular chain of the styrene-butadiene rubber, the epoxy group promotes the dispersion of the white carbon black and improves the bonding force with the flame retardant, and the flexible molecular chain can improve the mechanical loss performance of the rubber material.

Description

technical field [0001] The invention belongs to the field of rubber material preparation, and in particular relates to a preparation method of environment-friendly 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. Styrene-butadiene rubber is one of the important types. Its main chain contains a large amount of carbon, hyd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/04C08L7/00C08K13/04C08K7/26C08K5/5399C08K3/22C08K3/06C08K5/40C08J9/10C07F9/24C08F279/02C08F216/14
CPCC07F9/247C08F279/02C08J9/0033C08J9/0061C08J9/0066C08J9/0095C08J9/105C08J2203/04C08J2351/04C08J2407/00C08F216/1416
Inventor 陈胜男陈奕汲陈庆
Owner 陈胜男
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