CN102363339B - Tyre rubber vulcanizing technology - Google Patents

Tyre rubber vulcanizing technology Download PDF

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Publication number
CN102363339B
CN102363339B CN201110348936.XA CN201110348936A CN102363339B CN 102363339 B CN102363339 B CN 102363339B CN 201110348936 A CN201110348936 A CN 201110348936A CN 102363339 B CN102363339 B CN 102363339B
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China
Prior art keywords
sulfuration
heating
vulcanizing
high
minute
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CN201110348936.XA
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Chinese (zh)
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CN102363339A (en
Inventor
杜正华
樊学锋
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双钱集团(如皋)轮胎有限公司
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Priority to CN201110348936.XA priority Critical patent/CN102363339B/en
Publication of CN102363339A publication Critical patent/CN102363339A/en
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Publication of CN102363339B publication Critical patent/CN102363339B/en

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Abstract

The invention discloses a tyre rubber vulcanizing technology. An un-vulcanized rubber profile is heated and vulcanized for two times in a vulcanizing machine, and the two-time heating and vulcanizing technology comprises the following steps of: first heating and vulcanizing: introducing high-pressure steam of 1.50 to 1.60Mpa, introducing high-pressure medium nitrogen of 2.50 to 3.00Mpa after 4 to 5 minutes, and vulcanizing for 8 to 12 minutes by using a charged nitrogen vulcanizing 'pressure maintaining and temperature changing' process; and second heating: introducing the high-pressure steam of 1.50 to 1.60Mpa after first heating, introducing the high-pressure medium nitrogen of 2.50 to 3.00Mpa after 2 to 4 minutes, vulcanizing for 20 to 30 minutes, exhausting, and finishing vulcanizing. The technology has the advantages of reducing the cost and improving the production efficiency.

Description

A kind of tyre rubber vulcanizing technology

Technical field

The present invention relates to a kind of rubber vulcanization process, specifically a kind of nitrogen that adopts is as the tyre rubber vulcanizing technology of curing medium.

Background technology

One of basic working procedure of producing rubber is the vulcanization of rubber, traditional vulcanization of rubber technology for adding a certain proportion of sulphur and promoter in rubber size, then heating is vulcanized, by the linearity of original rubber, interchain can move freely, while receiving external force, strand center is understood displacement and is had the rubber of solubility characteristic, by sulfuration, obtains interchain generation chemical crosslinking and reticulates structure, make relative motion receive restriction, chain center of gravity is at will displacement and rubber that can only swelling.There is certain defect in this traditional sulfur cross-linking method, as the neat baking process of tire, needs higher energy, be difficult to again to control well the precrosslink degree of rubber, elastomeric material is thinning because of intensification, easily occurs to flow, cause the inhomogeneities of goods, waste rubber raw materials.In addition, also there is the long shortcoming of cure time in traditional vulcanization, affects the quantification of its production.

Summary of the invention

Main task of the present invention is to provide a kind of novel tyre rubber vulcanizing technology, particularly temperature and the number of times of heating is controlled, and reaches the rubber vulcanization process that improves production capacity object.

In order to solve above technical problem, a kind of tyre rubber vulcanizing technology of the present invention, first by green glue stock, compounding ingredient, filler, after vulcanizer is mixing in two rod mills or banbury after mixing, begin to take shape half finished rubber section bar, it is characterized in that: above-mentioned unvulcanized rubber profile is carried out to the sulfuration of heating for twice in vulcanizer, the described sulfuration process of heating for twice is: baking for the first time: pass into high pressure 1.50-1.60Mpa steam, after 4-5 minute, switch and pass into high-pressure medium nitrogen 2.50-3.00Mpa, " pressurize alternating temperature " technique sulfuration 8-12 minute of nitrogen sulfuration is filled in utilization, after heating for the first time, again pass into high pressure 1.50-1.60Mpa steam, after 2-4 minute, again switch and pass into high-pressure medium nitrogen 2.50-3.00Mpa, sulfuration 20-30 minute, last exhaust, completes sulfuration.

Advantage of the present invention:

In sulfuration process, general sulfuration divides three phases: induction period, cross-linking reaction stage, network formation stages.

Induction period is that sulphur, activator, promoter interact, and activator solubility in sizing material is increased, and activation promoter makes react the intermediate product that a kind of activity of generation is larger between promoter and sulphur; Then further cause rubber molecular chain and produce crosslinkable rubber macromolecule free radical.

In the cross-linking reaction stage: crosslinkable free radical or ion produce and react with rubber molecular chain, generate cross-bond.

Network formation stages: the cross-linking reaction in early stage in this stage has become, there is short China, rearrangement and cracking reaction in the initial cross-bond forming, and last network tends towards stability, and obtains the vulcanizate of stable performance.

In above-mentioned 3 stages of reaction, best sulfuration process is in theory: want induction period to grow large, fast, smooth time of curingprocess rate.Wherein curingprocess rate is fast, assurance be enhance productivity and reduce costs.

Advantage of the present invention: what the present invention mainly captured is to reduce costs this link of enhancing productivity, therefore, in the present invention, adopted twice sulfuration and its cure time and temperature and pressure have been controlled, having reached sulfuration process of the present invention than traditional sulfuration process time shorten at least 3 minutes.

The specific embodiment

Tyre rubber vulcanizing technology of the present invention is specific as follows:

First after mixing in two rod mills or banbury after conventional green glue stock, compounding ingredient, filler, vulcanizer mixing, begin to take shape half finished rubber section bar.

Above-mentioned unvulcanized rubber profile is inserted in vulcanizing machine model, and unvulcanized rubber profile is made medium at nitrogen, carries out twice baking in the steam of HTHP.Concrete steps are as follows: baking for the first time: in capsule, pass into high pressure 1.50-1.60Mpa steam, form 1.50-1.60MpaMpa high pressure, after 4-5 minute, switch and pass into high-pressure medium nitrogen 2.50-3.00Mpa, utilize " pressurize alternating temperature " technique sulfuration 8-12 minute that fills nitrogen sulfuration.After heating for the first time, again pass into high pressure 1.50-1.60Mpa steam, after 2-4 minute, again switch and pass into high-pressure medium nitrogen 2.50-3.00Mpa, vulcanize emptying capsule after 20-30 minute, remove tire, complete sulfuration.

Adopt this technique to make all-steel radial tyre and can shorten curing cycle, enhance productivity, the sulfuration process of twice heating, can reduce cure time 3min than common nitrogen sulfuration process, and within 1 year, every board can be produced more than 1000 tire more.

Claims (1)

1. a tyre rubber vulcanizing technology, first after mixing in two roller mills or banbury after green glue stock, compounding ingredient, filler, vulcanizing agent mixing, begin to take shape half finished rubber section bar, it is characterized in that: above-mentioned unvulcanized rubber profile is carried out to the sulfuration of heating for twice in vulcanizer, the described sulfuration process of heating for twice is: baking for the first time: pass into high pressure 1.50-1.60 Mpa steam, after 4-5 minute, switch and pass into high-pressure medium nitrogen 2.50-3.00 Mpa, utilize " pressurize alternating temperature " technique sulfuration 8-12 minute that fills nitrogen sulfuration; Heating for the second time: after heating for the first time, again pass into high pressure 1.50-1.60 Mpa steam, after 2-4 minute, again switch and pass into high-pressure medium nitrogen 2.50-3.00 Mpa, sulfuration 20-30 minute, last exhaust, completes sulfuration.
CN201110348936.XA 2011-11-08 2011-11-08 Tyre rubber vulcanizing technology CN102363339B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110348936.XA CN102363339B (en) 2011-11-08 2011-11-08 Tyre rubber vulcanizing technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110348936.XA CN102363339B (en) 2011-11-08 2011-11-08 Tyre rubber vulcanizing technology

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CN102363339B true CN102363339B (en) 2014-04-02

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102626969B (en) * 2012-05-02 2014-10-08 三角轮胎股份有限公司 Method for rubber vulcanization of semisteel tire
CN102773952A (en) * 2012-08-06 2012-11-14 李勇 Automatically shaped vulcanizing device for charging nitrogen gas by motorcycle tire capsule
CN103612356A (en) * 2013-11-28 2014-03-05 青岛国盛达科技股份有限公司 Method for vulcanizing solid tires in tank-type variable-pressure variable-temperature manner
CN104385506A (en) * 2014-11-24 2015-03-04 三角轮胎股份有限公司 Pressure retention and temperature varying nitrogen vulcanization method for tire
CN104859078A (en) * 2015-04-28 2015-08-26 安徽同丰橡塑工业有限公司 Rubber vulcanization process
CN106079190B (en) * 2016-06-30 2018-03-30 潍坊市跃龙橡胶有限公司 A kind of all-steel radial tire sulfuration process

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1290595A (en) * 2000-07-07 2001-04-11 青岛国人橡胶研究院 Method and equpment for heating nitrogenation and vulcanization of tyre
CN1522843A (en) * 2003-09-04 2004-08-25 桂林橡胶机械厂 Tyre sulfuration process

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4895684A (en) * 1985-02-25 1990-01-23 The Uniroyal Goodrich Tire Company Curing of articles in a dome press after early shut-off of steam

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1290595A (en) * 2000-07-07 2001-04-11 青岛国人橡胶研究院 Method and equpment for heating nitrogenation and vulcanization of tyre
CN1522843A (en) * 2003-09-04 2004-08-25 桂林橡胶机械厂 Tyre sulfuration process

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Address after: 226500 Jiangsu city of Nantong province Rugao City longevity Road No. 888 North Street

Patentee after: SP Reifenwerke GmbH of Shuan Qian group (Jiangsu)

Address before: 226500 Jiangsu city of Nantong province Rugao City longevity Road No. 888

Patentee before: Double Coin Group (Rugao) Tyre Co., Ltd.

C56 Change in the name or address of the patentee