Modified latex masterbatch/styrene butadiene rubber foam material

A technology of styrene-butadiene rubber and foaming materials, which is applied in the field of rubber foaming materials, can solve problems such as increasing the difficulty of industrial production, high requirements for foaming equipment, and complicated processes, and achieves better mechanical strength, simple preparation methods, and The effect of process simplification

Inactive Publication Date: 2019-03-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Foaming agents are divided into physical foaming agents and chemical foaming agents. Physical foaming agents have the characteristics of no pollution and no residue, but they have higher requirements for foaming equipment, which increases the difficulty of industrial production.
The patent application discloses a styrene-butadiene rubber microcellular foaming material and its preparation method (201610150936.1). The supercritical fluid CO2 and N2 are used to prepare the styrene-butadiene rubber foaming material, and the process is extremely complicated and difficult to control

Method used

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  • Modified latex masterbatch/styrene butadiene rubber foam material
  • Modified latex masterbatch/styrene butadiene rubber foam material
  • Modified latex masterbatch/styrene butadiene rubber foam material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of modified styrene-butadiene latex masterbatch 1-2

[0034] (1) Get 20g of white carbon black and 40g of blowing agent AC and mix evenly, add in 100ml of absolute ethanol, ultrasonic treatment for 40min, prepare the white carbon black / AC dispersion liquid;

[0035] (2) Get 20ml of white carbon black / AC dispersion liquid and join in the styrene-butadiene latex of 80ml, at room temperature mechanically vigorously stir 30min, obtain uncured modified styrene-butadiene latex,

[0036] (3) Pour the uncured modified styrene-butadiene latex into a mold, put it into a drying oven at 60° C. for curing, granulate after curing, and dry to obtain the modified styrene-butadiene latex masterbatch 1-2.

Embodiment 2

[0038] Preparation of modified styrene-butadiene latex masterbatch 1-11

[0039] (1) Get 20g of white carbon black, 20g of blowing agent AC, and 20g of blowing agent OBSH and mix evenly, add it to 100ml of absolute ethanol, and ultrasonically treat it for 40min to prepare a white carbon black / AC / OBSH dispersion;

[0040] (2) Get 20ml of white carbon black / AC / OBSH dispersion liquid and join in the styrene-butadiene latex of 80ml, at room temperature mechanically vigorously stir 30min, obtain uncured modified styrene-butadiene latex;

[0041] (3) Pour the uncured modified styrene-butadiene latex into a mold, put it into a drying oven at 60°C for curing, granulate after curing, and dry to obtain the modified styrene-butadiene latex masterbatch 1-11.

Embodiment 3

[0043] Preparation of modified natural latex masterbatch 1-21

[0044] (1) Get 20g of white carbon black, 40g of blowing agent AC, and 20g of blowing agent OBSH, mix evenly, add it to 100ml of absolute ethanol, and ultrasonically treat it for 40min to prepare a white carbon black / AC / OBSH dispersion;

[0045] (2) Get 20ml of white carbon black / AC / OBSH dispersion liquid and join in the natural latex of 80ml, at room temperature, mechanically vigorously stir 30min, obtain uncured modified natural latex;

[0046] (3) Pour the uncured modified natural latex into a mold, put it into a drying oven at 60°C for curing, granulate after curing, and dry to obtain the modified natural latex masterbatch 1-21.

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Abstract

The invention discloses a modified latex masterbatch / styrene butadiene rubber foam material and relates to the field of rubber foam materials. The modified latex masterbatch / styrene butadiene rubber foam material comprises styrene butadiene rubber, modified latex masterbatch, a vulcanizer, a plasticizer, an activator and an anti-aging agent. The modified latex masterbatch is made by adding a foaming agent and a reinforcing filler into latex (styrene butadiene latex or natural latex and the like), liquid mixing, coagulating, granulating and drying. Specifically, the foam material herein comprises 100 parts of styrene butadiene rubber, 20-40 parts of modified latex masterbatch, 1.0-2.0 parts of a vulcanizer, 10-15 parts of a plasticizer, 10-20 parts of an activator, and 1-3 parts of an anti-aging agent. The modified latex masterbatch / styrene butadiene rubber foam material features fine and uniform cells and good mechanical strength, and is expectedly applicable to diving suits, heat insulation materials and cushion tools.

Description

technical field [0001] The invention relates to the field of rubber foam materials, in particular to a modified latex masterbatch / styrene-butadiene rubber foam material formula. Background technique [0002] Styrene-butadiene rubber (SBR) is a copolymer of butadiene and styrene. It is the largest general-purpose synthetic rubber variety. It can be used together with natural rubber and various rubber products. It is widely used in tires, tapes, cables, medical equipment and other fields. The vulcanization curve of styrene-butadiene rubber is flat, the rubber material is not easy to burn and over-vulcanize, and its wear resistance, heat resistance, oil resistance and aging resistance are better than natural rubber, but pure styrene-butadiene rubber has low strength and often needs to be added strong agent. Inorganic fillers such as carbon black, white carbon black, titanium dioxide, graphene, etc. can be mixed into the rubber compound as a reinforcing agent, which can signifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08L7/00C08K3/36C08K3/22C08K3/06C08K5/14C08J9/10C08J3/22
CPCC08J3/226C08J9/0023C08J9/0061C08J9/0066C08J9/0095C08J9/103C08J9/105C08J2203/04C08J2203/18C08J2309/06C08J2407/00C08J2409/06C08K3/06C08K3/36C08K5/14C08K2003/2296
Inventor 陈勇军罗远芳陈丽娟贾志欣毛晓琪贾德民
Owner SOUTH CHINA UNIV OF TECH
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