CN1657557A - Method for preparing non-odor generated rubber - Google Patents

Method for preparing non-odor generated rubber Download PDF

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Publication number
CN1657557A
CN1657557A CN 200510038185 CN200510038185A CN1657557A CN 1657557 A CN1657557 A CN 1657557A CN 200510038185 CN200510038185 CN 200510038185 CN 200510038185 A CN200510038185 A CN 200510038185A CN 1657557 A CN1657557 A CN 1657557A
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CN
China
Prior art keywords
odor generated
rubber
gram
activator
rubbers
Prior art date
Application number
CN 200510038185
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Chinese (zh)
Inventor
孔德威
孔华顺
Original Assignee
孔德威
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 孔德威 filed Critical 孔德威
Priority to CN 200510038185 priority Critical patent/CN1657557A/en
Publication of CN1657557A publication Critical patent/CN1657557A/en

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Abstract

A non-odor regenerated rubber is prepared from used tyre through pulverizing, magnetic separation, adding pine tar, rosin and polyalkylphenol disulfide, dynamic desulfurizing, and kneading.

Description

The preparation method of non-odor generated rubber

Technical field

The present invention is a kind of preparation method of non-odor generated rubber.

Background technology

Along with people improve constantly requirement on environmental protection, the rubber type of material to as floor covering, interior wall coverings layer does not allow to exist undesirable smell.But owing to cost, restriction in price, the main gel kind that these elastomeric materials adopt basically is a reclaimed rubber.At present, reclaimed rubber kind on the China market, be damaged tire pulverize laggard capable magnetic separation separate rubber powder, dynamically desulfurization, sulphur are pinched and are formed again, they all contain niff basically, are difficult to satisfy most of clients' demand, especially export to the product that regenerated rubber is contained in American-European market, the smell problem becomes the natural cover for defense that influences normal trade, is seriously restricting to these country's this series products of outlet.

Summary of the invention

The technical problem that the present invention solves is exactly that the reclaimed rubber of existing reclaimed rubber preparation method preparation contains problem unpleasant, improper smell, and a kind of preparation method of non-odor generated rubber is provided.

So-called " tasteless " is meant no undesirable, unpleasant, improper smell, contains normal rubber smell certainly.Non-odor generated rubber is a kind of local improvement of existing reclaimed rubber kind.

The preparation method of non-odor generated rubber of the present invention, be damaged tire pulverize laggard capable magnetic separation separate rubber powder, dynamically desulfurization, sulphur are pinched and are formed again, in dynamic desulfurized step, the tenderizer that adds is Stockholm tar and rosin, and the activator of adding is a polyalkylbenzene phenol disulphide.

Adopt damaged tire as material of main part,, can guarantee the performance of " non-odor generated rubber ", can not have off-odour again, can guarantee that material of main part meets the double requirements of the gentle flavor of performance because tire itself is to constitute with the fine elastomeric material.

Tenderizer mainly plays plastification.Also be used as tenderizer with Stockholm tar and rosin, interaction that it is good and synergistic effect play an important role to the double requirements that satisfies smell and performance.

Widely used reclaimed rubber manufacturing mainly contains thiophenol, thiophenol zinc salt and fragrant disulphide etc. with activator.But what above-mentioned activator had is active little, and what have has an off-odour, should not be as the activator of " non-odor generated rubber ".Through test of many times, select for use active and polyalkylbenzene phenol disulphide (activator 420) that smell can both meet the demands as activator, effect is satisfied.

As further improvement, the activator 420 that adds in per 100 gram rubber powders is the 0.1-0.6 gram, preferred 0.2-0.4 gram; The rosin that adds is the 1-5 gram, preferred 2-3 gram; The Stockholm tar that adds is the 5-20 gram, preferred 9-14 gram.

For the preparation method of any non-odor generated rubber recited above, in dynamic desulfurized step, behind adding tenderizer, the activator, be warming up to 150-210 ℃, preferred 170-190 ℃; Be incubated 2-5 hour, preferred 3-4 hour.

For the preparation method of any non-odor generated rubber recited above, in the kneading step, roll spacing≤1 millimeter, roller temperature≤70 ℃.

For the preparation method of any non-odor generated rubber recited above, after kneading, carry out refining again, roll spacing 0.2-0.4 millimeter during refining, roller temperature≤90 ℃.

For the preparation method of any non-odor generated rubber recited above, damaged tire becomes the particle about 28 orders after pulverizing.

For the preparation method of any non-odor generated rubber recited above, in the magnetic separation separating step, utilize style of the shoe magnet to remove irony impurity, utilize the vibratory screening apparatus separated fiber simultaneously.

The present invention is by selecting for use damaged tire to make the main body material, tenderizer and activator are carried out the selection of kind and consumption, search out the best proportioning between material of main part and all kinds of Synergist S-421 95, design the practical formulation of eliminating improper smell, be aided with suitable preparation method, finally make and meet non-odor generated rubber national regenerated rubber standard, that the domestic and international market is accepted.

Embodiment

Embodiment 1:

Stripping and slicing, washing: damaged tire is cut into fragment afterwash silt and some other impurity.

Broken glue, pulverizing: after being broken into 2-5 order particle with rubber breaker, with pulverizer rubber particles is ground into particle about 28 orders again.

Magnetic separation separates: utilize style of the shoe magnet except that the irony impurity in the degranulation in crushing process, utilize the vibratory screening apparatus separated fiber simultaneously, get rubber powder.

Dynamically desulfurization: be 0.2 gram, add rosin 2 grams, add the ratio that Stockholm tar 10 restrains according to adding activator 420 in per 100 gram rubber powders, in rubber powder, tenderizer, the dynamic digester of activator input, be warming up to 170-190 ℃ gradually, be incubated 3-4 hour then, finish sulfur removal technology, discharge is cooled to normal temperature.

The thin-pass kneading: the kneading under the condition of mill roll spacing≤1 millimeter, roller temperature≤70 ℃ of cooled rubber powder is deposited.The thin-pass kneading can increase the plasticity of reclaimed rubber, reduces its mooney viscosity.

Filter refining: after the kneading glue of depositing is filtered with screw extrusion press, concise one-tenth reclaimed rubber on scouring machine (refining roll spacing 0.2-0.4 millimeter, roller temperature≤90 ℃).But filter the refining impurity screening, improve the quality of reclaimed rubber.

Reclaimed rubber by this method preparation is carried out rerum natura detect, data see Table 1.

Its rerum natura detects by the production scene direct sampling, and its print preparation condition is pressed GB/T1 3460-92 regulation and carried out.

Embodiment 2:

Restrain the ratio that adding activator 420 is 0.4 gram in the rubber powders, adding rosin 2.2 restrains, adding Stockholm tar 12 restrains according to per 100 and add relevant material in dynamic desulfurized step, other is identical with embodiment 1.

In this specification sheets, activator 420 is that Huaihe River, Bengbu rubber ingredients factory produces.

Table 1 Sequence number Test item Unit Detected result ????1 Hardness Shao A Degree ????72 ????2 Tensile strength ????MPa ????7.4 ????3 Elongation rate of tensile failure ????% ????358 ????4 Mooney viscosity ML100 ℃ 1+4 Mooney point ????77 ????5 Smell The on-the-spot sensation of researchist and client, relatively thinks that product eliminated the off-odour of existing reclaimed rubber kind

Claims (9)

1. the preparation method of non-odor generated rubber, damaged tire pulverize laggard capable magnetic separation separate rubber powder, dynamically desulfurization, kneading form again, it is characterized in that: in dynamic desulfurized step, the tenderizer that adds is Stockholm tar and rosin, and the activator of adding is a polyalkylbenzene phenol disulphide.
2. the preparation method of non-odor generated rubber according to claim 1 is characterized in that: the activator that adds in per 100 gram rubber powders is the 0.1-0.6 gram, and rosin is the 1-5 gram, and Stockholm tar is the 5-20 gram.
3. the preparation method of non-odor generated rubber according to claim 2 is characterized in that: the activator that adds in per 100 gram rubber powders is the 0.2-0.4 gram, and rosin is the 2-3 gram, and Stockholm tar is the 9-14 gram.
4. according to the preparation method of claim 1,2 or 3 described non-odor generated rubbers, it is characterized in that: in dynamic desulfurized step, behind adding tenderizer, the activator, be warming up to 150-210 ℃, be incubated 2-5 hour.
5. the preparation method of non-odor generated rubber according to claim 4 is characterized in that: in dynamic desulfurized step, be warming up to 170-190 ℃, be incubated 3-4 hour.
6. according to the preparation method of claim 1,2 or 3 described non-odor generated rubbers, it is characterized in that: in the kneading step, roll spacing≤1 millimeter, roller temperature≤70 ℃.
7. according to the preparation method of claim 1,2 or 3 described non-odor generated rubbers, it is characterized in that: after kneading, carry out refining again, roll spacing 0.2-0.4 millimeter during refining, roller temperature≤90 ℃.
8. according to the preparation method of claim 1,2 or 3 described non-odor generated rubbers, it is characterized in that: damaged tire becomes the particle about 28 orders after pulverizing.
9. according to the preparation method of claim 1,2 or 3 described non-odor generated rubbers, it is characterized in that: in the magnetic separation separating step, utilize style of the shoe magnet to remove irony impurity, utilize the vibratory screening apparatus separated fiber simultaneously.
CN 200510038185 2005-01-21 2005-01-21 Method for preparing non-odor generated rubber CN1657557A (en)

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CN 200510038185 CN1657557A (en) 2005-01-21 2005-01-21 Method for preparing non-odor generated rubber

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010069258A1 (en) * 2008-12-18 2010-06-24 泰安市金山橡胶工业有限公司 Automatic rubber powder plasticizing method and equipment for automatic rubber powder plasticizing method
CN103012894A (en) * 2012-11-21 2013-04-03 金湖晋祥橡塑科技有限公司 Reclaimed superglue and production method thereof
CN104526910A (en) * 2015-01-06 2015-04-22 陈静 Process of producing high-performance regenerated rubber through waste tires
CN105037863A (en) * 2015-08-27 2015-11-11 天台坤荣橡胶有限公司 Odorless regenerated rubber
CN105086040A (en) * 2015-08-27 2015-11-25 天台坤荣橡胶有限公司 Environmental-protection tasteless regenerated rubber
CN106565567A (en) * 2016-11-11 2017-04-19 青岛科技大学 Efficient regenerating aid, preparation method thereof and regenerating method for waste butyl inner tire
CN108129721A (en) * 2017-12-25 2018-06-08 福建省邵武市恒晖橡胶再生有限公司 A kind of preparation method of reclaimed rubber

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010069258A1 (en) * 2008-12-18 2010-06-24 泰安市金山橡胶工业有限公司 Automatic rubber powder plasticizing method and equipment for automatic rubber powder plasticizing method
JP2012512284A (en) * 2008-12-18 2012-05-31 タイアン ジンシャン ラバー インダストリー カンパニー リミテッド Automated rubber powder plasticizing process and apparatus
RU2496806C2 (en) * 2008-12-18 2013-10-27 Таиан Джиншан Раббер Индастри Ко., Лтд. Method for automatic plastification of ground rubber and apparatus for realising said method
CN103012894A (en) * 2012-11-21 2013-04-03 金湖晋祥橡塑科技有限公司 Reclaimed superglue and production method thereof
CN104526910A (en) * 2015-01-06 2015-04-22 陈静 Process of producing high-performance regenerated rubber through waste tires
CN105037863A (en) * 2015-08-27 2015-11-11 天台坤荣橡胶有限公司 Odorless regenerated rubber
CN105086040A (en) * 2015-08-27 2015-11-25 天台坤荣橡胶有限公司 Environmental-protection tasteless regenerated rubber
CN106565567A (en) * 2016-11-11 2017-04-19 青岛科技大学 Efficient regenerating aid, preparation method thereof and regenerating method for waste butyl inner tire
CN108129721A (en) * 2017-12-25 2018-06-08 福建省邵武市恒晖橡胶再生有限公司 A kind of preparation method of reclaimed rubber

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