Anti-roller-sticking chloroprene rubber and preparation method thereof

A chloroprene rubber and anti-stick roller technology, applied in the field of chloroprene rubber, can solve the problem that the quality stability and uniformity of the mixed rubber cannot be well ensured, and the mixed rubber sticking roller and difficult to control density can not be well solved. The temperature of the mixed rubber in the mixing chamber can ensure the stability and uniformity of quality, easy temperature control, and good physical properties.

Inactive Publication Date: 2013-07-24
JIHUA 3515 LEATHER & SHOES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the flame-retardant and oil-resistant products are not all made of neoprene, and even if only 40% of the raw rubber is added to the rubber formula, the normal processing technology is used to banbury the production, and it cannot solve the problem of mixing well. Rubber sticking phenomenon
In addition, due to the relatively large heat generation performance of chloroprene rubber, it is difficult to control the temperature of the mixed rubber in the internal mixing chamber according to the normal production process, so that the quality stability and uniformity of all mixed rubber cannot be well guaranteed.

Method used

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  • Anti-roller-sticking chloroprene rubber and preparation method thereof
  • Anti-roller-sticking chloroprene rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] a. Take by weight 25-35kg of natural rubber, 25-35kg of butadiene rubber, 35-45kg of neoprene rubber, 3-7kg of active zinc oxide, 4-8kg of light magnesium oxide, and 1-3kg of stearic acid , antiaging agent 4010NA 1-3kg, carbon black 35-45kg, flame retardant is decabromodiphenyl ether or antimony trioxide 5-15kg, softener transformer oil 2-7kg, tackifier terpene resin 5-7kg, accelerator CBS1.5-2.7kg, vulcanizing agent sulfur 0.5-1.5kg;

[0025] b. Natural rubber mastication: masticate the natural rubber until the plasticity is 0.4-0.5, then add butadiene rubber to disperse evenly;

[0026] c. One-stage internal mixing: put the materials in step b into the internal mixer, control the temperature at 90-100 ° C, press the top bolt, keep it for 18-22 seconds, then raise the top bolt, add active zinc oxide, light magnesium oxide, Stearic acid, anti-aging agent and tackifier, and 3 / 5 of carbon black, press the top plug, keep 110-130S, raise the top plug to add softener, press...

Embodiment 2

[0032] A preparation method of neoprene for anti-sticking rollers, comprising the following steps: A preparation method of neoprene for anti-sticking rollers, comprising the following steps:

[0033] a. Take by weight 25kg of natural rubber, 25kg of butadiene rubber, 35kg of neoprene, 3kg of active zinc oxide, 4kg of light magnesium oxide, 1kg of stearic acid, 1kg of antioxidant MB, 35kg of carbon black, and flame retardant decabromine Diphenyl ether 5kg, softener transformer oil 2kg, tackifier coumarone resin 5kg, accelerator MBTS 1.5kg, vulcanizing agent sulfur 0.5kg;

[0034] b. Natural rubber mastication: masticate the natural rubber until the plasticity is 0.4, then add butadiene rubber to disperse evenly;

[0035] c. One-stage internal mixing: Add the materials in step b into the internal mixer, control the temperature at 90°C, press the top bolt, keep it for 18 seconds, then raise the top bolt, add active zinc oxide, light magnesium oxide, stearic acid, Anti-aging agen...

Embodiment 3

[0041] A preparation method of anti-sticking roller neoprene, comprising the following steps:

[0042]a. Take by weight 28kg of natural rubber, 29kg of butadiene rubber, 38kg of neoprene, 4kg of active zinc oxide, 5kg of light magnesium oxide, 1.5kg of stearic acid, 1.6kg of antioxidant RD, 38kg of carbon black, flame retardant Agent antimony trioxide 7kg, softener transformer oil 4kg, tackifier terpene resin 5.5kg, accelerator NA-22 1.8kg, vulcanizing agent sulfur 0.8kg;

[0043] b. Natural rubber mastication: masticate the natural rubber until the plasticity is 0.42, then add butadiene rubber to disperse evenly;

[0044] c. One-stage internal mixing: Add the materials in step b into the internal mixer, control the temperature at 92°C, press the top bolt, keep it for 19 seconds, then raise the top bolt, add active zinc oxide, light magnesium oxide, stearic acid, Anti-aging agent and tackifier, and 3 / 5 of carbon black, press the top bolt, keep it for 115S, raise the top bolt ...

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Abstract

The invention provides Anti-roller-sticking chloroprene rubber and preparation method thereof, wherein the preparation method comprises the following steps of: a. weighting the following components by weight: natural rubber, butadiene rubber, chloroprene rubber, active zinc oxide, lightweight magnesium oxide, eleaostearic acid, antioxidant, carbon black, fire retardant, softener, adhesion agent, promoter and vulcanizing agent; b. plasticating the natural rubber: adding butadiene rubber to uniformly disperse after plasticating natural rubber until plasticity reaches 0.4-0.5; c. first-stage internally mixing: adding materials in the step b into an internal mixer, adding active zinc oxide, lightweight magnesium oxide, eleaostearic acid, antioxidant, adhesion agent, and 3 / 5 of carbon black, and then discharging the material to an open mill until temperature rises to 100-120 DEG C; d. first-stage open-milling; e. plasticating chloroprene rubber; f. second-stage internally mixing; g. adding sulphur in the open mill: after rubber compounds in the step f fall into the open mill, firstly pulling through three ways, adding the vulcanizing agent, packing five triangle bags after the vulcanizing agent is completely fed, then batching-off, and warehousing after the bags are hangedly aired under normal temperature for 10-14h.

Description

technical field [0001] The invention relates to a neoprene rubber, in particular to a neoprene rubber with anti-sticking roller effect, and also to a preparation method of the neoprene rubber. Background technique [0002] Neoprene rubber has a very high polarity and the sticking phenomenon is also very serious. The sticking phenomenon of domestic neoprene rubber is even more serious, especially the CR121 type neoprene rubber with better physical properties. CR121 has good physical properties. This kind of chloroprene rubber is sulfur-adjustable, and the heat generation is serious during processing. If the processing is not careful, it will cause self-sulfurization of the rubber without adding other vulcanizing agents such as sulfur, and the processing risk factor higher. [0003] Most of the flame-retardant and oil-resistant products are not all made of neoprene, and even if only 40% of the raw rubber is added to the rubber formula, the normal processing technology is used...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C08L11/00C08L7/00C08L9/00C08K13/02C08K3/22C08K3/04C08K5/06B29B7/28
Inventor陈峰刘宝曹德生
OwnerJIHUA 3515 LEATHER & SHOES