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A stabilizer composition specially used for halogen-containing rubber

A technology of stabilizer and composition, applied in the field of stabilizer composition of halogen-containing rubber, can solve the problems of increasing the volume cost of halogen-containing rubber products, increasing the proportion of rubber materials, increasing the weight of rubber products, etc., and improving the aging resistance. , the effect of improving the degree of dispersion and improving the physical and mechanical properties

Active Publication Date: 2017-01-11
JIANGSU ATE DONGTAI NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The proportion of rubber compound is generally around 1.2, while that of magnesia is 3.58, which makes the proportion of rubber materials added with magnesia significantly increase, thereby increasing the volume cost of halogen-containing rubber products to a certain extent, and rubber The weight of the product increases, such as: the weight of the cable increases, etc., and its subsequent impact is very huge
In addition, during the processing and use of halogen-containing rubber, aging effects of light, heat, oxygen, weather and other factors will affect the life of the product. In order to solve this type of aging problem, the existing technology is to add anti-aging additives or preservatives, which will inevitably increase the formulation cost

Method used

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  • A stabilizer composition specially used for halogen-containing rubber
  • A stabilizer composition specially used for halogen-containing rubber
  • A stabilizer composition specially used for halogen-containing rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] It is specially used in the stabilizer composition of halogen-containing rubber, including 60% magnesium oxide, 10% magnesium hydroxide, and 30% calcium 2-hydroxy-1,4-phthalate.

[0021] Weigh 200g of chlorinated polyethylene, 6g of vulcanizing agent DCP, 4g of cross-linking auxiliary agent TAIC, 4g of stearic acid, 4g of zinc stearate, 40g of chlorinated paraffin, 10g of epoxy soybean oil, 54g of light calcium carbonate, half supplement Mix 30g of strong carbon black, 70g of gas-mixed carbon black, and 20g of stable composition (accurate to 0.001g) in an enamel cup or stainless steel cup, and then place the mixed sample on a double stick that has been preheated to 130~140°C Kneading on a drum mill to obtain a rubber compound. Then vulcanize according to the positive curing time at (150±2)°C to obtain vulcanized rubber. Tested according to national standards, the obtained properties are shown in Table 1. Scanning electron micrographs of the tensile fracture surface ar...

Embodiment 2

[0023] It is specially used in the stabilizer composition of halogen-containing rubber, including 60% magnesium oxide, 20% magnesium salicylate, and 20% calcium 3-hydroxy-1,2-phthalate.

[0024] On the double-drum mill, pass the CR2321 neoprene several times, and then add various additives: 4 parts of stabilizer composition, 5 parts of zinc oxide, 40 parts of semi-reinforcing carbon black, DOP 5 part, 5 parts of softening oil, 1 part of stearic acid, and 1.5 parts of HVA-2 to obtain a rubber compound. Then vulcanize according to the positive curing time at (150±2)°C to obtain vulcanized rubber. Tested according to national standards, the obtained properties are shown in Table 1.

Embodiment 3

[0026] It is specially used in the stabilizer composition for halogen-containing rubber, including 40% magnesium oxide, 20% magnesium hydroxide, 30% calcium salicylate, and 10% magnesium m-hydroxybenzoate.

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PUM

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Abstract

The invention discloses a special stabilizer composition for halogen-contained rubber. The stabilizer composition contains magnesium compounds and phenolic hydroxy contained aromatic metal carboxylates, wherein parts of phenolic hydroxy contained aromatic metal carboxylates are phenolic hydroxy contained aromatic calcium carboxylates. The special stabilizer composition for halogen-contained rubber contains one or a mixture of more magnesium compounds and one or a mixture of more phenolic hydroxy contained aromatic metal carboxylates, wherein parts of phenolic hydroxy contained aromatic metal carboxylates are phenolic hydroxy contained aromatic calcium carboxylates, the content of magnesium compounds is 50-70%, and the content of phenolic hydroxy contained aromatic calcium carboxylates is 20-40%. The stabilizer composition provided by the invention not only can be used as an assistant vulcanizing agent in a crosslinking process and an acid absorbent in a thermal treatment process, but also has the thermal oxidative aging resistance of a phenol anti-aging agent; in addition, the composition has the characteristics of easiness for dispersion, low specific gravity, no easiness for moisture absorption and good compatibility with a high-molecular polymer.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to a stabilizer composition specially used for halogen-containing rubber. Background technique [0002] In halogen-containing rubber, the introduction of polar atoms makes the molecular chain polar, so that it has the properties that natural rubber lacks, such as excellent oil resistance, weather resistance, ozone resistance and heat resistance, etc. In addition, the viscosity of the elastomer The joint strength is also improved, the vulcanization performance of the rubber compound and the compatibility with other polymer materials are improved, so it has broad industrial application value and prospects. At present, common halogenated rubbers include neoprene rubber, halogenated butyl rubber, halogenated polybutadiene rubber, chlorinated polyethylene rubber, and chlorosulfonated polyethylene rubber. [0003] In chloroprene rubber (CR), it is generally vulcanized with a combination ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/28C08L11/00C08K13/02C08K3/22C08K5/138
CPCC08K3/22C08K5/138C08K13/02C08K2003/222C08K2003/2224C08K2201/014C08L23/286C08L91/06C08L11/00
Inventor 张莉娜
Owner JIANGSU ATE DONGTAI NEW MATERIALS TECH
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