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NBR and PVC alloy rubber production technology

A production process, PVC resin technology, applied in the field of rubber production, can solve the problems of shortening the service time of molds, corrosion and corrosion of production molds, etc., and achieve excellent antibacterial and flame retardant properties, low production costs, and excellent wear resistance. Effect

Inactive Publication Date: 2017-12-01
NINGBO SHUNZE RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly two methods for synthesizing rubber-plastic alloy rubber from NBR and PVC, one is the emulsion co-precipitation method, and the other is the mechanical blending method, but no matter which method above will encounter the degradation of PVC, and PVC Degradation products include chlorine gas, which is corrosive and easy to corrode the production mold and shorten the service life of the mold
However, the current method to deal with chlorine gas corrosion in the factory is only to clean the mold and produce exhaust air, which is low in efficiency and poor in effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of NBR and PVC alloy rubber production technique that the present invention proposes comprises the following steps:

[0021] S1. Preparation of mixed rubber material: Take NBR slices and place them in an internal mixer, heat up to 70°C for mastication, then add a corresponding proportion of PVC resin to the internal mixer, and mix at a speed of 260r / min 4min to obtain mixture A, and then add simethicone, stearic acid, anti-aging agent and vulcanizing agent to mixture A in sequence, and continue to mix at a speed of 260r / min for 8min to obtain mixture B, then add dimethicone to mixture B Hydropyridine and barium succinate were mixed for 8 minutes at a speed of 310r / min to obtain mixture C, and finally tris(2-chloropropyl)phosphate, tris(2-chloroethyl)phosphate, Far-infrared ceramic powder and molybdenum disulfide, and mixed at a speed of 360r / min for 15min to obtain the mixed rubber material;

[0022] S2. Preparation of lubricant: Mix mineral oil, phosphoric acid...

Embodiment 2

[0027] A kind of NBR and PVC alloy rubber production technique that the present invention proposes comprises the following steps:

[0028] S1. Preparation of mixed rubber material: Take NBR slices and place them in an internal mixer, heat up to 80°C for mastication, then add a corresponding proportion of PVC resin to the internal mixer, and mix at a speed of 280r / min 3min to obtain mixture A, and then add simethicone, stearic acid, anti-aging agent and vulcanizing agent to mixture A in sequence, and continue to mix at a speed of 280r / min for 5min to obtain mixture B, then add dimethicone to mixture B Hydropyridine and barium succinate were mixed at a speed of 320r / min for 5min to obtain mixture C, and finally in mixture C, tris(2-chloropropyl)phosphate, tris(2-chloroethyl)phosphate, Far-infrared ceramic powder and molybdenum disulfide are mixed for 10 minutes at a speed of 380r / min to obtain the mixed rubber material;

[0029] S2. Preparation of lubricant: Mix mineral oil, ph...

Embodiment 3

[0034] A kind of NBR and PVC alloy rubber production technique that the present invention proposes comprises the following steps:

[0035] S1. Preparation of mixed rubber material: Take NBR slices and place them in an internal mixer, heat up to 60°C for mastication, then add a corresponding proportion of PVC resin to the internal mixer, and mix at a speed of 260r / min 5min to obtain mixture A, and then add simethicone, stearic acid, anti-aging agent and vulcanizing agent to mixture A in sequence, and continue to mix at a speed of 260r / min for 10min to obtain mixture B, then add dimethicone to mixture B Hydropyridine and barium succinate were mixed for 10 minutes at a speed of 300r / min to obtain mixture C, and finally tris(2-chloropropyl)phosphate, tris(2-chloroethyl)phosphate, Far-infrared ceramic powder and molybdenum disulfide were mixed for 20 minutes at a speed of 370r / min to obtain the mixed rubber material;

[0036] S2. Preparation of lubricant: Mix mineral oil, phosphor...

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PUM

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Abstract

The invention discloses an NBR and PVC alloy rubber production technology, which comprises the following steps: S1. pretreating and plastifying NBR, mixing PVC, mixing dimethicone, stearic acid, an anti-aging agent and a vulcanizing agent, mixing dihydropyridine and barium succinate, and mixing other auxiliary materials, to obtain a mixed rubber material; S2. preparing a lubricant; S3. coating the lubricant onto a forming die, injecting the mixed rubber material, forming, and demolding, to obtain a semi-finished alloy rubber product; and S4. pre-vulcanizing and vulcanizing the semi-finished alloy rubber product, to obtain the alloy rubber finished product, and conveying to a discharging area, thus completing the production technology of the alloy rubber. The production technology has complete flows, is stable in technology, low in production cost, simple to operate, high in reproducibility, less in the generation amount of chlorine during production, the corrosion of the alloy rubber to production equipment is small, the forming and demolding are easy, the prepared alloy rubber is good in thermal stability and wear resistant performance, and also has excellent antibacterial and flame-retardant performances.

Description

technical field [0001] The invention relates to the technical field of rubber production, in particular to a production process of NBR and PVC alloy rubber. Background technique [0002] The blended rubber made of NBR+PVC is the main rubber type of rubber-plastic alloy rubber at present, where NBR is the abbreviation of nitrile rubber, and NBR is the abbreviation of polyvinyl chloride. The combination of NBR and PVC can greatly increase the plasticity of craft products. At the same time, the rubber-plastic alloy rubber synthesized by NBR and PVC has both the ozone resistance of PVC and the oil resistance of NBR, so it is widely used, especially in the outer layer of oil pipes and fuel pipes. Rubber, wire and cable sheathing, oil-resistant conveyor belts, automotive seals, rubber rollers and aprons, automotive molded parts, microporous sponges, foam insulation, automotive waterproof strips, and boot soles and protective coatings. [0003] At present, there are mainly two met...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08L27/06C08L83/04C08K13/02C08K3/30C08K5/09C08K5/521C08K5/098B29B7/28B29C35/00B29C35/02
CPCB29C35/02B29B7/283B29C35/002C08K2003/3009C08K2201/014C08L9/02C08L2201/02C08L2205/025C08L2205/035C08L27/06C08L83/04C08K13/02C08K3/30C08K5/09C08K5/521C08K5/098
Inventor 姜国明张凯朱健健刘同金谭培亮张兆庆张江彪
Owner NINGBO SHUNZE RUBBER
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