Unlock instant, AI-driven research and patent intelligence for your innovation.

Insoluble sulfur pre-dispersed master batch and preparation method thereof

A pre-dispersed masterbatch particle and solubility technology, applied in the field of rubber processing, can solve the problems of poor rubber processing performance, flying dust, agglomeration, etc.

Inactive Publication Date: 2015-07-01
WUXI HUASHENG RUBBER TECHN
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional insoluble sulfur is a powder, which has many disadvantages: first, the powder product is very easy to cause dust and environmental pollution during production, transportation and use; second, the compatibility between the powder product and rubber is poor
Since EPDM rubber and styrene-butadiene rubber are usually used as colloids in the prior art, the compatibility and dispersibility of the pre-dispersed insoluble sulfur rubber masterbatch produced by this technology to rubber are poor, and the rubber material The processing performance is poor, and the production process is relatively complicated, the production efficiency is low, the phenomenon of agglomeration and static electricity is more likely to occur, and it is more likely to generate dust, so it needs to be improved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of insoluble sulfur pre-dispersed masterbatch described in the embodiment of the present invention, according to the proportion by weight, includes: 70-80 parts of insoluble sulfur; 4-8 parts of nitrile rubber; 2-6 parts of stearic acid; pentaerythritol hard 3-7 parts of fatty acid; 2-6 parts of paraffin; 3-8 parts of white oil.

[0018] The preparation method of the insoluble sulfur pre-dispersed masterbatch, each raw material is weighed according to the above-mentioned ratio, and the nitrile rubber is first masticated on the open mill, and when the banburying temperature reaches 20°C, the rest of the raw materials are added and wait for banburying When the temperature reaches 40°C, turn over and sweep the powder, increase the temperature of banburying to 75°C, and check the uniform dispersion effect of banburying. After reaching the standard, it can be tableted and granulated to complete the preparation.

Embodiment 2

[0020] Proportion by weight includes: 70 parts of insoluble sulfur powder; 4 parts of nitrile rubber; 2 parts of stearic acid; 3 parts of pentaerythritol stearate; 2 parts of paraffin;

[0021] The preparation method of the insoluble sulfur pre-dispersed masterbatch, each raw material is weighed according to the above-mentioned ratio, and the nitrile rubber is first masticated on the open mill, and when the banburying temperature reaches 20°C, the rest of the raw materials are added and wait for banburying When the temperature reaches 40°C, turn over and sweep the powder, increase the temperature of banburying to 75°C, and check the uniform dispersion effect of banburying. After reaching the standard, it can be tableted and granulated to complete the preparation.

Embodiment 3

[0023] Proportions by weight include: 75 parts of insoluble sulfur powder; 6 parts of nitrile rubber; 4 parts of stearic acid; 5 parts of pentaerythritol stearate; 3 parts of paraffin;

[0024] The preparation method of the insoluble sulfur pre-dispersed masterbatch, each raw material is weighed according to the above-mentioned ratio, and the nitrile rubber is first masticated on the open mill, and when the banburying temperature reaches 20°C, the rest of the raw materials are added and wait for banburying When the temperature reaches 40°C, turn over and sweep the powder, increase the temperature of banburying to 75°C, and check the uniform dispersion effect of banburying. After reaching the standard, it can be tableted and granulated to complete the preparation.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an insoluble sulfur pre-dispersed master batch which is relatively good in compatibility and dispersibility, and relatively good in glue stock processing performance. The insoluble sulfur pre-dispersed master batch is prepared from the following components in parts by weight: 70-80 parts of insoluble sulfur, 4-8 parts of nitrile rubber, 2-6 parts of stearic acid, 3-7 parts of pentaerythritol stearate, 2-6 parts of paraffin and 3-8 parts of white oil. A preparation method for the insoluble sulfur pre-dispersed master batch is simple in production process, relatively high in production efficiency, and capable of avoiding a caking and agglomeration phenomenon and an electrostatic phenomenon in a conventional production process and avoiding dust flying. The preparation method comprises the following steps: weighing the raw materials in parts by weight; plastifying the nitrile rubber on an open mill, and adding the rest of raw materials at a banburying temperature of 20-30 DEG C; turning over and transferring powder when the banburying temperature is 40-70 DEG C, rising the banburying temperature to 75-90 DEG C, and inspecting the uniform dispersion effects in banburying; and unloading and pelletizing after products meet standards, thereby completing preparation.

Description

technical field [0001] The invention relates to insoluble sulfur predispersed masterbatch particles and a preparation method, belonging to the technical field of rubber processing. Background technique [0002] Insoluble sulfur is a rubber vulcanizing agent and accelerator, which can effectively improve the bonding strength between layers of multi-layer rubber products, improve the bonding performance of tire-type steel wire and rubber, reduce the scorching phenomenon of rubber materials during storage, and improve the quality of rubber products. the quality of. However, the traditional insoluble sulfur is a powder, which has many disadvantages: first, the powder product is very easy to cause dust and environmental pollution during production, transportation and use; second, the compatibility between the powder product and rubber is poor. Therefore, certain improvements have been made in the prior art. What is common at present is an insoluble sulfur masterbatch composition...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L9/02C08L91/06C08K3/06C08K5/09C08K5/103B29B7/00
CPCC08L9/02B29B7/00C08L2205/025C08L2205/03C08L91/06C08K3/06C08K5/09C08K5/103
Inventor 石杰陈杰顾蓉英
Owner WUXI HUASHENG RUBBER TECHN