CN105418964A - Microwave catalytic activation rubber powder composition and preparation method therefor - Google Patents

Microwave catalytic activation rubber powder composition and preparation method therefor Download PDF

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Publication number
CN105418964A
CN105418964A CN201511010476.4A CN201511010476A CN105418964A CN 105418964 A CN105418964 A CN 105418964A CN 201511010476 A CN201511010476 A CN 201511010476A CN 105418964 A CN105418964 A CN 105418964A
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CN
China
Prior art keywords
rubber powder
powder composition
microwave
rubber
microwave catalysis
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CN201511010476.4A
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Chinese (zh)
Inventor
李翠红
余强
东俊云
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天津海泰环保科技发展有限公司
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Priority to CN201511010476.4A priority Critical patent/CN105418964A/en
Publication of CN105418964A publication Critical patent/CN105418964A/en

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
    • C08J11/00Recovery or working-up of waste materials
    • C08J11/04Recovery or working-up of waste materials of polymers
    • C08J11/10Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • C08J11/18Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material
    • C08J11/28Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic compounds containing nitrogen, sulfur or phosphorus
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L95/00Compositions of bituminous materials, e.g. asphalt, tar, pitch
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
    • C08J2317/00Characterised by the use of reclaimed rubber
    • Y02W30/706

Abstract

The invention relates to a microwave catalytic activation rubber powder composition and a preparation method therefor and belongs to the chemical technology field. The microwave catalytic activation rubber powder composition comprises 100 parts of waste rubber powder, 5-15 parts of softener and 0.3-2 parts of activator. By utilization of radiation effects of microwaves, S-S, C-S crossing bonds of waste tyre rubber powder are damaged fully selectively, thus the stereoscopic crossing net is fractured, the waste tyre rubber powder has a fluffy surface after microwave catalytic activation treatment, mutual permeability and the reaction activity of phase interfaces are raised, and therefore rubber powder composition and asphalt have compatibility.

Description

A kind of microwave catalysis activated rubber powder composition and method of making the same

Technical field

The invention belongs to waste rubber recycling field, relate to a kind of microwave catalysis activated rubber powder composition and method of making the same.

Background technology

In recent years, the use properties of development to bituminous pavement of domestic road traffic proposes more and more higher requirement.But not can solve the contradiction between high-temperature stability and low-temperature cracking-resistance due to asphalt concrete, having there is more rut and cracking early damage phenomenon in China's bituminous pavement, has had a strong impact on the service efficiency of highway.Polymer modified asphalt is because of the high temperature performance of its excellence, it is generally acknowledged excellent ground surface material, the performance improving matrix pitch by adding polymkeric substance is extensively approved in the industry, but styrene butadiene block copolymer (SBS) is expensive causes higher modified asphalt material cost, therefore, people are finding a kind of more economical, asphalt modifier that performance is more excellent always, in order to alternative SBS.

Along with the promotion of damaged tire comprehensive utilization industry and going deep into of pavement structure research, rubber powder modified asphalt is as a kind of new road surfacing material, significantly can improve high-temperature stability and the cold cracking property of bituminous concrete, be more and more applied in highway engineering construction.But we are mostly vulcanized rubber powder by waste Crumb rubber used, be cross-linked by some atoms such as sulphur between polymer molecule, in modifying asphalt, rubber powder is dispersed among matrix pitch with molecule, surface is swelling and combine with pitch by the oil content in absorption pitch, the modifying asphalt formed belongs to nonhomogeneous system, and when high-temperature storage, rubber powder is easy to emanate in pitch, storage stability is poor, not easily long-time storage and long-distance transportation.

Patent CN101817946A discloses a kind of activated waste rubber powder, its preparation method and modifying asphalt and preparation method thereof, and waste Crumb rubber, tenderizer and/or rubber activator are carried out mixing forming through mixing roll.Although this method also can realize the process of activation to rubber powder, activation efficiency is low, energy consumption causes greatly production cost to increase.

Patent CN102443207A discloses a kind of activated rubber particle and preparation method thereof and application, rubber powder, C9 petroleum resin, activator, maleic anhydride are carried out blending and modifying by twin-screw extrusion, wherein C9 petroleum resin do not have chemically reactive and adhesiveproperties is poor, fragility is large, ageing resistance is not good, and its polarity is larger, poor with nonpolar bitumen compatibility, so the activated rubber powder prepared by this method carries out to pitch the phenomenon that modification can cause the easy to crack and poor storage stability of the low temperature of modifying asphalt.

CN103396669A discloses a kind of microwave desulfurization cracking waste tire rubber composite modified asphalt and preparation method thereof, waste tyre rubber powder and regenerator process through microwave by the method, and then by the rubber powder that processed and pitch, polyethylene wax carries out blending and modifying, although this rubber powder is through microwave treatment, but rubber powder not being carried out pre-treatment makes its surface produce activity, so catalytic activation effect cannot be being reached through microwave treatment, just simple rubber powder is carried out dry heat, although add the viscosity that polyethylene wax can reduce rubber asphalt when preparing modifying asphalt, but the low-temperature performance of pitch can be affected greatly, bituminous pavement is caused to ftracture when low temperature.

CN104559242A discloses a kind of waste rubber powder modified asphalt composition and preparation method thereof, the method is by rubber powder and potassium oleate, Sodium dodecylbenzene sulfonate, aqueous sodium hydroxide solution mixing shearing 60 minutes, and then baking two hours know the obtained activated rubber powder of oven dry in 60 DEG C of baking ovens, and then by activated rubber powder and pitch, aromatic hydrocarbon oil, polyethylene etc. are mixed with modifying asphalt, the activated rubber powder complex technical process selecting this method to prepare is difficult to realize in process of production, and this method activation effect is poor, the incorporation of rubber powder is lower can only reach 6%-20%.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art, a kind of microwave catalysis activated rubber powder composition and method of making the same is proposed, a difficult problem for waste Crumb rubber comprehensive utilization can be solved, also can solve the poor storage stability of rubber powder modified asphalt, problem that rubber powder volume is low.

The technical scheme adopted for realizing object of the present invention is: a kind of microwave catalysis activated rubber powder composition, according to weight parts, comprises following component: waste Crumb rubber 100 parts, tenderizer 5-15 part, activator 0.3-2 part.

The particle diameter that described waste Crumb rubber is is 20-40 order, and the source of waste Crumb rubber is one or more in radial tyre, car tire, sebific duct, travelling belt, rubber overshoes, offset plate.

Described tenderizer is the mixture of one or more in coal tar, Stockholm tar, Yatall MA, aromatic hydrocarbon oil, rosin.

Described activator is the mixture of one or more in thiophenol, thiophenol zinc salt, aromatic hydrocarbons disulphide, polyalkylbenzene phenol sulfides.

A preparation method for microwave catalysis activated rubber powder composition, comprises the following steps:

(1) according to weight parts, waste Crumb rubber 100 parts, tenderizer 5-15 part, activator 0.3-2 part are mixed to join high-speed stirring mixer and carry out premix and obtain rubber powder compound;

(2) rubber powder compound is entered microwave activation treater by travelling belt, obtain microwave catalysis activated rubber powder through catalytic activation.

The particle diameter that described waste Crumb rubber is is 20-40 order, and the source of waste Crumb rubber is one or more in radial tyre, car tire, sebific duct, travelling belt, rubber overshoes, offset plate.

Described tenderizer is the mixture of one or more in coal tar, Stockholm tar, Yatall MA, aromatic hydrocarbon oil, rosin.

Described activator is the mixture of one or more in thiophenol, thiophenol zinc salt, aromatic hydrocarbons disulphide, polyalkylbenzene phenol sulfides.

The rotating speed of described high-speed stirring mixer is 1000-1450 rev/min:, stir and do time as 2-15 minute in advance, high-speed stirring can make rubber powder temperature raise, and controls the temperature of rubber powder at 50-60 DEG C.

The microwave irradiation power of described microwave activation treater is 400W-800W, and radiated time is 1.5-5min.

Beneficial effect of the present invention:

1, the present invention utilizes the radiation effect of microwave; S-S, C-S cross-link bond selectively fully destroying waste tyre rubber powder makes 3 D cross-linked net rupture; part becomes less crosslinked fragment; part becomes chain or branched molecular chain; but at utmost protect main chain not to be damaged; waste tyre rubber powder is fluffy in microwave catalysis activation treatment rear surface simultaneously, and interface and pitch have the reactive behavior of good affinity, interpenetrating property phase interface, thus can better be compatible with pitch.

2, the modifying asphalt that prepared by this method can make waste tyre rubber powder high additive add, and the viscosity being modifying asphalt is lower, significantly improve the workability of production, storage, transport, mix, the whole process of construction, whole process implementation dock year produces simultaneously, heat-energy losses is less, greatly reduces the energy consumption of production process.

3, the adding of microwave catalysis activated rubber powder, improve high temperature performance and the stability in storage of modifying asphalt, add bituminous concrete high temperature Rut resistance, low temperature cracking resistance ability, extend Road Service Life, there is social and economic benefits.

Embodiment

In order to clearly explain content of the present invention, will by specific embodiment more detailed description, specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.

Below by the comparative example 1,2 by common rubber powder modified asphalt, the embodiment 1-9 carrying out modification with the rubber powder particle prepared according to the inventive method contrasts, and compares the performance difference using activated rubber powder modifying asphalt of the present invention and common rubber powder modified asphalt.

In following examples, waste Crumb rubber is that 30 orders give up radial powder, also can car tire, sebific duct, travelling belt, rubber overshoes, offset plate.

In following examples, tenderizer is one or more in environment-friendly type Stockholm tar, coal tar, Yatall MA, aromatic hydrocarbon oil, rosin.

In following examples, activator is one or more in thiophenol, thiophenol zinc salt, aromatic hydrocarbons disulphide, polyalkylbenzene phenol sulfides.

In following examples, linking agent adopts the composition of sulphur, zinc oxide, stearic acid, accelerator NS, and its mass ratio is 68:20:10:3.

Shoddy, tenderizer, activator are mixed by certain mass ratio in following examples, join high-speed stirring mixer and carry out premix, it is 10 minutes that stirring is done time in advance, obtained rubber powder compound; Rubber powder compound is entered microwave activation treater by travelling belt, adjusts microwave power and the radiated time of microwave treater as required, obtain catalytic activation rubber powder through catalytic activation.

Embodiment 1-9

1, catalytic activation adhisive powder composition is prepared

Prepare the catalytic activation adhisive powder composition of embodiment 1-9 by the component listed by table 1 and consumption thereof, carry out premix by above-mentioned steps, and carry out activation treatment under microwave irradiation power listed in Table 1 and radiated time, obtained catalytic activation adhisive powder composition.

Table 1

2, the preparation of rubber powder modified asphalt

The catalytic activation adhisive powder composition prepared in pitch and embodiment 1-9 is used to prepare modifying asphalt respectively according to component listed in table 2 and consumption.

Table 2

Matrix pitch is heated to 185-190 DEG C by the preparation method of rubber powder modified asphalt, stir wherein and add catalytic activation adhisive powder composition obtained in a certain proportion of embodiment 1-9, premix 15min is incubated in premixing tank, one time is ground subsequently through colloidal mill, then enter to stir and grow tank insulation growth 1-3 hour, finally utilize promote auger by account for asphalt quality per-cent be 0.2% linking agent slowly add, continues insulated and stirred 1-2 hour namely obtain rubber powder modified asphalt, detect its performance.

Comparative example 1

Matrix pitch is heated rapidly to 185-190 DEG C through interchanger, stirring adds the mass percent accounting for pitch is wherein the rubber powder of 18%, premix 15min is incubated in premixing tank, one time is ground subsequently through colloidal mill, then enter to stir and grow tank insulation growth 3 hours, finally by account for matrix pitch mass percent be 0.25% linking agent slowly add, continue insulated and stirred 1 hour i.e. obtained common rubber powder modified asphalt, detect its performance.

Comparative example 2

Matrix pitch is heated rapidly to 185-190 DEG C through interchanger, stirring adds the mass percent accounting for pitch is wherein the rubber powder of 22%, premix 15min is incubated in premixing tank, one time is ground subsequently through colloidal mill, then enter to stir and grow tank insulation growth 3 hours, finally utilize promote auger by account for asphalt quality per-cent be 0.3% linking agent slowly add, continue insulated and stirred 1 hour i.e. obtained common rubber powder modified asphalt, detect its performance.

Performance test

According to the Ministry of Communications's industry standard " highway engineering pitch and Asphalt Mixture Experiment code (JTGE20-2011) ", carry out performance test to the product 1-11 that embodiment 1-9 and comparative example 1-2 prepares respectively, test result is in table 3.

Table 3

As can be seen from Table 2, the reaction times required when adopting the present invention to prepare rubber powder modified asphalt composition reduces, and improves production efficiency significantly, reduces production energy consumption.Can be spiked in pitch by vast scale when it can also be seen that the activation degree of rubber powder is higher, and viscosity is constant, can material cost be reduced, there is good economic benefit.

As can be seen from the data of table 3, compared with common rubber powder modified asphalt (comparative example 1,2), be far smaller than common rubber powder modified asphalt with its segregation (48h softening point difference) of modifying asphalt of this invention preparation, even some is less than 1.The indices impact on modifying asphalt of the height of crumb rubber activation degree is comparatively large, and the modifying asphalt low-temperature ductility prepared during the activation degree height of rubber powder is higher, viscosity is lower.The radiation power of integrated data display microwave treater is 600W, and when radiated time is 2.5 minutes, the indices of modifying asphalt is best, and modifying asphalt has good high and low temperature performance, and stability in storage is better, and the volume viscosity higher of rubber powder is lower.Therefore the catalytic activation rubber powder that prepared by the present invention carries out modifying asphalt and possesses extraordinary high temperature performance and resistance to deterioration, segregation performance.

Claims (9)

1. a microwave catalysis activated rubber powder composition, is characterized in that, according to weight parts, comprises following component: waste Crumb rubber 100 parts, tenderizer 5-15 part, activator 0.3-2 part.
2. a kind of microwave catalysis activated rubber powder composition according to claim 1, it is characterized in that the particle diameter that described waste Crumb rubber is is 20-40 order, the source of waste Crumb rubber is one or more in radial tyre, car tire, sebific duct, travelling belt, rubber overshoes, offset plate.
3. a kind of microwave catalysis activated rubber powder composition according to claim 1, is characterized in that described tenderizer is the mixture of one or more in coal tar, Stockholm tar, Yatall MA, aromatic hydrocarbon oil, rosin.
4. a kind of microwave catalysis activated rubber powder composition according to claim 1, is characterized in that described activator is the mixture of one or more in thiophenol, thiophenol zinc salt, aromatic hydrocarbons disulphide, polyalkylbenzene phenol sulfides.
5. a preparation method for microwave catalysis activated rubber powder composition, is characterized in that comprising the following steps:
(1) according to weight parts, waste Crumb rubber 100 parts, tenderizer 5-15 part, activator 0.3-2 part are mixed to join high-speed stirring mixer and carry out premix and obtain rubber powder compound;
(2) rubber powder compound is entered microwave activation treater by travelling belt, obtain catalytic activation adhisive powder composition through catalytic activation.
6. the preparation method of a kind of microwave catalysis activated rubber powder composition according to claim 5, is characterized in that described tenderizer is the mixture of one or more in coal tar, Stockholm tar, Yatall MA, aromatic hydrocarbon oil, rosin.
7. the preparation method of a kind of microwave catalysis activated rubber powder composition according to claim 5, is characterized in that described activator is the mixture of one or more in thiophenol, thiophenol zinc salt, aromatic hydrocarbons disulphide, polyalkylbenzene phenol sulfides.
8. the preparation method of a kind of microwave catalysis activated rubber powder composition according to claim 5, it is characterized in that the rotating speed of described high-speed stirring mixer is 1000-1450 rev/min:, stirring does time as 2-15 minute in advance, high-speed stirring can make rubber powder temperature raise, and controls the temperature of rubber powder at 50-60 DEG C.
9. the preparation method of a kind of microwave catalysis activated rubber powder composition according to claim 5, it is characterized in that the microwave irradiation power of described microwave activation treater is 400W-800W, radiated time is 1.5-5min.
CN201511010476.4A 2015-12-28 2015-12-28 Microwave catalytic activation rubber powder composition and preparation method therefor CN105418964A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107163168A (en) * 2017-06-29 2017-09-15 安徽中宏橡塑有限公司 A kind of preparation method of anti-rut behavior excellent road rubber powder pitch
CN108219191A (en) * 2017-12-29 2018-06-29 石油和化学工业橡胶及再生产品质量监督检验中心(天津市质量监督检验站第四十二站) The production process and technique of a kind of activated rubber powder
CN108373557A (en) * 2017-12-29 2018-08-07 天台坤荣橡胶有限公司 A kind of preparation method of high-performance reclaimed rubber

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1103350A (en) * 1993-12-02 1995-06-07 梅州市梅江嘉应橡塑厂 Method for desulfuration regeneration of waste rubber
CN101596755A (en) * 2009-04-17 2009-12-09 孔赟荣 The method of producing environment-friendly solid tyre for industrial vehicle by using waste rubber
CN101817946A (en) * 2010-04-19 2010-09-01 交通部公路科学研究所 Activated waste rubber powder and preparation method thereof as well as modified asphalt and preparation method thereof
CN103772738A (en) * 2014-01-21 2014-05-07 浙江佰利鞋业有限公司 Reclaiming method of reclaimed rubber and manufacturing method of rubber rain shoes by using reclaimed rubber

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1103350A (en) * 1993-12-02 1995-06-07 梅州市梅江嘉应橡塑厂 Method for desulfuration regeneration of waste rubber
CN101596755A (en) * 2009-04-17 2009-12-09 孔赟荣 The method of producing environment-friendly solid tyre for industrial vehicle by using waste rubber
CN101817946A (en) * 2010-04-19 2010-09-01 交通部公路科学研究所 Activated waste rubber powder and preparation method thereof as well as modified asphalt and preparation method thereof
CN103772738A (en) * 2014-01-21 2014-05-07 浙江佰利鞋业有限公司 Reclaiming method of reclaimed rubber and manufacturing method of rubber rain shoes by using reclaimed rubber

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107163168A (en) * 2017-06-29 2017-09-15 安徽中宏橡塑有限公司 A kind of preparation method of anti-rut behavior excellent road rubber powder pitch
CN108219191A (en) * 2017-12-29 2018-06-29 石油和化学工业橡胶及再生产品质量监督检验中心(天津市质量监督检验站第四十二站) The production process and technique of a kind of activated rubber powder
CN108373557A (en) * 2017-12-29 2018-08-07 天台坤荣橡胶有限公司 A kind of preparation method of high-performance reclaimed rubber
CN108373557B (en) * 2017-12-29 2020-08-11 天台坤荣橡胶有限公司 Preparation method of high-performance regenerated rubber

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