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Rubber fender mold-free extrusion method

A rubber fender and die extrusion technology, applied in the field of rubber fender dieless extrusion method, can solve the problems of inability to meet the requirements of the extrusion method, large steam consumption, long production cycle, etc., and achieve satisfactory shape stability, The effect of good finish and stable finished product size

Active Publication Date: 2014-05-07
YANTAI TAIHONG RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages are: first, the mold investment is large, and a single set of mold generally requires investment
Second, the molding efficiency is low. It needs to go through mold assembly, molding processing and mold unloading. The production cycle is long. Each set of molds can only process three molds per day (9-10 meters of rubber fenders).
Third, high energy consumption. Since the fender and the metal mold are heated by steam in the vulcanization tank, there are problems of low heating efficiency and large steam consumption.
However, the conventional raw material formula and preparation process cannot meet the requirements of the extrusion method.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The first step, ingredients: 80 parts of styrene-butadiene rubber (1502 type), 20 parts of CPE, 160 parts of reclaimed rubber, 6.5 parts of zinc oxide, 2 parts of light magnesium oxide, 2.6 parts of stearic acid, 1.0 parts of anti-aging agent 4010NA, anti-aging 1 part of RD, 10 parts of dioctyl phthalate, 1.6 parts of sulfur, 1.3 parts of accelerator NS, 0.5 parts of accelerator BF, 0.6 parts of vulcanizing agent TDDS, 0.4 parts of anti-scorch agent CTP, (N660 type) carbon black 47 parts, 35 parts of light calcium carbonate, 35 parts of sericite powder, 15 parts of aromatic oil. Said parts all refer to parts by weight.

[0027] The second step, one-stage mixing: put styrene-butadiene rubber, reclaimed rubber, zinc oxide, and stearic acid into the high-speed internal mixer and mix for 4 minutes, then add CPE, light magnesium oxide, and dioctyl phthalate, 17 parts The carbon black is mixed for another 3 minutes, degummed, removed, and cooled.

[0028] The third step, pa...

Embodiment 2

[0039] The first step, ingredients: 85 parts of styrene-butadiene rubber (1502 type), 15 parts of CPE, 155 parts of reclaimed rubber, 5.5 parts of zinc oxide, 2 parts of light magnesium oxide, 2.6 parts of stearic acid, 1.0 parts of anti-aging agent 4010NA, anti-aging 1 part of RD, 9 parts of dioctyl phthalate, 1.6 parts of sulfur, 1.3 parts of accelerator NS, 0.4 parts of accelerator BF, 0.5 parts of vulcanizing agent TDDS, 0.4 parts of anti-scorch agent CTP, (N660 type) carbon black 47 parts, 35 parts of light calcium carbonate, 35 parts of sericite powder, 15 parts of aromatic oil. Said parts all refer to parts by weight.

[0040] The second step, one-stage mixing: put styrene-butadiene rubber, reclaimed rubber, zinc oxide, and stearic acid into the high-speed internal mixer and mix for 5 minutes, then add CPE, light magnesium oxide, and dioctyl phthalate, 17 parts The carbon black is mixed for another 2 minutes, then the glue is removed, the sheet is removed, and cooled. ...

Embodiment 3

[0052] The first step, ingredients: 90 parts of styrene-butadiene rubber (1502 type), 10 parts of CPE, 150 parts of reclaimed rubber, 6 parts of zinc oxide, 2 parts of light magnesium oxide, 2.6 parts of stearic acid, 1.0 parts of anti-aging agent 4010NA, anti-aging 1 part of agent RD, 8 parts of dioctyl phthalate, 1.6 parts of sulfur, 1.3 parts of accelerator NS, 0.45 parts of accelerator BF, 0.55 parts of vulcanizing agent TDDS, 0.4 parts of anti-scorch agent CTP, (N660 type) carbon black 47 parts, 35 parts of light calcium carbonate, 35 parts of sericite powder, 15 parts of aromatic oil. Said parts all refer to parts by weight.

[0053] The second step, one-stage mixing: Put styrene-butadiene rubber, reclaimed rubber, zinc oxide, and stearic acid into the high-speed internal mixer and mix for 3 minutes, then add CPE, light magnesium oxide, and dioctyl phthalate, 17 parts The carbon black was mixed for another 4 minutes, degummed, removed, and cooled.

[0054] The third st...

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PUM

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Abstract

The invention discloses a rubber fender mold-free extrusion method. The raw materials include 80-90 parts of styrene-butadiene rubber (SBR), 10-20 parts of CPE (chlorinated polyethylene), 150-160 parts of regenerated rubber, 5-6.5 parts of zinc oxide, 2 parts of light magnesia, 2.6 parts of stearic acid, 1 part of anti-aging agent 4010NA, 1 part of anti-aging agent RD, 8-10 parts of dioctyl phthalate, 1.6 parts of sulfur, 1.3 parts of accelerator NS, 0.4-0.5 parts of accelerator BF, 0.5-0.6 parts of vulcanizer TDDS, 0.4 parts of anti-coking agent CTP, 47 parts of carbon black, 35 parts of light calcium carbonate, 35 parts of sericite powder and15 parts of aromatic oil. The preparation process includes first-stage blending, second-stage blending, sulfur addition, extrusion, vulcanizing and forming. The method adopts novel material proportions and process parameters, to satisfy requirements of shape stability of extruded semi-finished fender product for the extrusion material.

Description

technical field [0001] The invention relates to a forming method of a rubber fender, in particular to a dieless extrusion method of a rubber fender. Background technique [0002] Rubber fenders are generally molded. The main disadvantages are: first, the mold investment is large, and a single set of mold generally requires investment [0003] Hundreds of thousands or even hundreds of thousands of RMB. Second, the molding efficiency is low. It needs to go through mold assembly, molding processing and mold unloading. The production cycle is long. Each set of molds can only process three molds (9-10 meters of rubber fenders) per day. Third, high energy consumption. Since the fender and the metal mold are heated by steam in the vulcanization tank, there are problems of low heating efficiency and large steam consumption. [0004] If the extrusion method is used instead of compression molding, and the extruded rubber fender is vulcanized at high temperature, it will show a huge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C47/00B29C47/92C08L17/00C08L9/06C08L23/28C08K13/02C08K3/04C08K3/26C08K3/34C08K5/09C08K5/12B29C48/92
CPCB29C48/92B29C2948/92704B29C2948/9259B29C2948/92885B29C2948/92895
Inventor 宋占昭徐国谦李志宏柳伟杰程怀华
Owner YANTAI TAIHONG RUBBER
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