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Method for preparing chlorinated polyethylene modified butadiene acrylonitrile rubber foaming material

A technology of chlorinated polyethylene and nitrile rubber, which is applied in the field of chemical engineering, can solve problems such as hazards, and achieve the effects of simple process, improved ozone resistance, heat aging resistance, and easy control

Inactive Publication Date: 2011-02-02
谭成章
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the hazards of vinyl chloride in the production process and the dioxin carcinogens formed by the disposal of waste PVC, its application prospects have been cast a shadow, especially in the context of the current global environmental protection. Although it has not been explicitly banned, but Has been included in the unwelcome list by Japan and the European Union

Method used

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Comparison scheme
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Embodiment Construction

[0031] Below in conjunction with embodiment, content of the present invention is described in further detail:

[0032] Step 1): Configure raw materials.

[0033] Comparative formula A

[0034] 300g of CPE and 30g of chlorinated paraffin are pre-mixed at 60°C, and the resulting pre-mixture is plasticized on the open mill with different roll pitches, and then 1000g of NBR is added in batches for blending, and small materials such as Sulfur 10g, stearic acid 20g, accelerator M10g, foaming agent AC50g, compound regulator foaming agent (foaming agent H+OBSH) 80g, channel carbon black 200g, mix evenly and thin the triangular bag 3-5 times, Film output with large roll distance.

[0035] Comparing Formula B

[0036] 200g of CPE and 25g of chlorinated paraffin are pre-mixed at 70°C, and the resulting pre-mixture is plasticized on the open mill with different roll distances. Then add 2000g NBR blending in batches, add small materials such as sulfur 50g, promotor CZ40g, boric acid 50...

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PUM

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Abstract

The invention provides a CPE modified nitrile rubber forming material which has the advantages of environmental protection, low cost and wide application scope and a process for preparation. The process of the invention comprises adopting nitrile rubber 100 portions which is added with chlorinated polyethylene which is 10-100 portions, vulcanizing agent 1-5 portions, catalyst 1-3 portions, main forming agent 5-15 portions and composite regulating forming agent 1-8 portions in 100-190 DEG C to heat up for 10-100 minutes according to the weight portions, and getting modified nitrile rubber (NBR) forming material. The invention has the advantages of dramatically improving ozone proof and heat aging properties of the NBR forming material, promoting fire retardancy, abrasive resistance, and tensile strength of the NBR foaming material, obviously lowering production cost of the NBR foaming material, and meanwhile, keeping excellent manufacturing technique property, and having better environment-friendly properties, having excellent physical properties, bubble hole stability, simple technique and easy control.

Description

technical field [0001] The invention belongs to the technical field of chemistry and chemical engineering, and in particular relates to a preparation method of a chlorinated polyethylene (CPE) modified nitrile rubber (NBR) foaming material. technical background [0002] Sponge rubber is a kind of rubber with loose and porous structure, which has good resilience and flexibility; at the same time, it has efficient shock absorption, sound insulation and heat insulation performance, and is widely used in sealing, noise reduction, shock absorption and other aspects. [0003] According to the different pore structures, sponge rubber can be divided into three types: open cell (combined cell), closed cell (single cell) and mixed cell; according to the selection of materials at the place of use, the variety of sponge rubber that can be manufactured such as natural rubber (NR), Neoprene (CR), Nitrile Rubber (NBR), Ethylene Propylene Diene Rubber (EPDM), Styrene Butadiene Rubber (SBR),...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/02C08L23/28C08J9/04C08K13/02B29C35/02
Inventor 谭成章
Owner 谭成章
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