WO2019214097A1 - Asphalte à haute teneur en caoutchouc respectueux de l'environnement à basse température présentant une performance élevée et son procédé de production - Google Patents

Asphalte à haute teneur en caoutchouc respectueux de l'environnement à basse température présentant une performance élevée et son procédé de production Download PDF

Info

Publication number
WO2019214097A1
WO2019214097A1 PCT/CN2018/098405 CN2018098405W WO2019214097A1 WO 2019214097 A1 WO2019214097 A1 WO 2019214097A1 CN 2018098405 W CN2018098405 W CN 2018098405W WO 2019214097 A1 WO2019214097 A1 WO 2019214097A1
Authority
WO
WIPO (PCT)
Prior art keywords
asphalt
rubber powder
glue
temperature
vulcanized rubber
Prior art date
Application number
PCT/CN2018/098405
Other languages
English (en)
Chinese (zh)
Inventor
周文彬
徐思田
周文婷
陶红
朱亚琴
陈加干
Original Assignee
江苏宝利国际投资股份有限公司
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.)
Filing date
Publication date
Application filed by 江苏宝利国际投资股份有限公司 filed Critical 江苏宝利国际投资股份有限公司
Publication of WO2019214097A1 publication Critical patent/WO2019214097A1/fr

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • C08J11/18—Recovery 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
    • C08J11/20—Recovery 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 hydrocarbons or halogenated hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L17/00—Compositions of reclaimed rubber
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L19/00—Compositions of rubbers not provided for in groups C08L7/00 - C08L17/00
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

  • the invention relates to the field of improvement of asphalt materials, in particular to a high-performance low-temperature environmentally-friendly high-adhesive asphalt and a production process thereof.
  • SBS/rubber composite modified asphalt has been extensively studied, but because the general rubber powder is not desulfurized and degraded, the particles are coarse, which makes the sedimentation in the asphalt easy and the viscosity of the modified asphalt is too high, which limits the amount of SBS and cannot be reached. Performance requirements for high viscosity modified asphalt.
  • Patent CN 105802263 A first proposed the concept of high-glue asphalt, also known as “high-adhesive modified asphalt based on ultra-fine embedded grafting technology”, which means that the rubber content of modified asphalt is more than 10%, and it has high viscosity. High-low temperature performance of modified asphalt and high-performance modified asphalt with anti-cracking and aging resistance of rubber asphalt. The advent of high-glue asphalt not only reduces the cost of high-viscosity modified asphalt but also simplifies the process of rubber asphalt.
  • the patent is a dry type particle capable of preparing high-glue asphalt and a related technology for preparing high-glue asphalt using the particle, and the preparation process of the mother liquid (master batch) is a dry process, which has high manufacturing cost and lacks industrialization. A natural defect in one-piece large production.
  • the patent re-prepares and evaluates high-glue asphalt by the wet masterbatch method according to the new process and equipment, and realizes environmental protection, stabilization, high performance and low-cost production of high-glue asphalt.
  • the object of the invention is to overcome the problems that the conventional SBS high-viscosity modified asphalt and rubber asphalt are difficult to be stable, difficult to process, complicated in process, and release a large amount of harmful gas during processing, and also to solve the conventional SBS/rubber composite modified asphalt.
  • the rubber powder is not desulfurized and degraded, and the particles are relatively coarse, which leads to easy sedimentation in the asphalt, high viscosity of the modified asphalt at a high temperature, and the problem of limiting the amount of SBS.
  • the low-temperature industrialized high-adhesive asphalt developed by the company is a perfect substitute for all kinds of conventional SBS modified asphalt, high-viscosity modified asphalt and various types of composite modified asphalt.
  • the patented target products surpass the high-content SBS in the performance of cement and mixture.
  • the highly viscous modified asphalt achieves environmental protection, stabilization, high performance and low cost production in the process and equipment.
  • Vulcanized rubber has a stable three-dimensional network structure, is untreated, and is insoluble in solvents.
  • the interaction between asphalt and vulcanized rubber in the preparation of rubber asphalt causes damage to the network structure of rubber, but the degree of interaction is affected by the type of rubber.
  • natural rubber is more susceptible to degradation than synthetic rubber.
  • the degradation rate of vulcanized rubber in asphalt is affected by factors such as rubber particle size, type, and processing temperature.
  • the composition of vulcanized rubber powder is complex and the degradation speed is different, which causes many problems such as difficult control of rubber asphalt process parameters, serious secondary pollution in the process environment, and difficulty in construction.
  • the present invention destroys the three-dimensional network structure of the rubber powder by the low temperature swelling desulfurization pretreatment of the rubber powder to achieve the purpose of rapid degradation and dispersion in the hot asphalt.
  • the swollen rubber particles undergo desulfurization degradation, and the partial breakage of the S-S bond causes the original crosslinked macromolecular network structure to become smaller, forming a small amount of chains and increasing the sol content of the system. It is more conducive to the subsequent shearing process to promote the exchange of substances between the rubber powder and the asphalt, which enhances the compatibility of the two and improves the stability.
  • the preparation and use of high-adhesive asphalt masterbatch also avoids the conventional asphalt and rubber powder brought by the production method of degrading the vulcanized rubber powder into the asphalt after long-time shearing at a high temperature of 200 ° C or higher to obtain the modified asphalt.
  • the high-glue asphalt masterbatch is attenuated and reduced in viscosity, so that the viscosity change provides a possibility for the high content of the subsequent additives.
  • the addition of a crosslinking agent enhances the bond between SBS and the rubber powder.
  • a part of the epoxy group on the crosslinking agent reacts with the unsaturated group on the SBS, and a part reacts with the carboxyl group on the surface of the carbon black in the rubber powder, and this association makes the SBS phase having a lower density.
  • the dragging of the rubber powder phase with higher density reduces the stratification tendency of the SBS-rich phase and the rubber powder phase in the matrix asphalt, thereby achieving uniform and stable dispersion in the asphalt.
  • the cross-linking agent melts and becomes fine and uniformly dispersed in the asphalt.
  • the cross-linking agent has two functions. On the one hand, the combination between the SBS and the rubber powder is strengthened to cause mutual traction, and on the other hand, the chemical combination between the SBS-adhesive powder and the asphalt is established to further enhance the storage stability. .
  • Heavy cross-linking 60-80; high-adhesive asphalt masterbatch: 8-32; SBS: 1-9; cross-linking agent: 0.2-3;
  • the proportion of the high-glue asphalt masterbatch as above is preferably determined according to the actual concentration of the high-glue asphalt masterbatch.
  • the high-glue asphalt masterbatch is a homogenous blend obtained by first desulfurizing and degrading the vulcanized rubber powder in a destructurizer, and then adding the matrix asphalt together;
  • the high-glue asphalt is a mixture obtained by first adding a high-glue asphalt masterbatch and SBS to a heavy-duty asphalt for blending and then stabilizing it by a crosslinking agent.
  • the raw material for preparing the high-glue asphalt masterbatch comprises the following components and content by weight: vulcanized rubber powder: 10 to 50; destructurizer: 5 to 15; matrix asphalt: 40 to 80;
  • the desulfurization degradation in the destructurizer is specifically that the vulcanized rubber powder and the destructurizer are maintained at a temperature of 130-150 ° C in a pre-development tank for low-temperature development to achieve desulfurization degradation, and the above-mentioned matrix asphalt is further blended to obtain a homogeneous blend.
  • the blending is specifically by gel milling to achieve a blend to obtain a homogeneous blend.
  • the raw material for preparing the high-glue asphalt masterbatch comprises the following components and content by weight: vulcanized rubber powder: 15-40; destructurizer: 5-15; matrix asphalt: 45-80.
  • the general deconstructing agent Because of the good compatibility and affinity with rubber, the general deconstructing agent has good rubber compatibility and good processing for the rubber production and mixing process, and uses a destructurizer as a softening agent. Based on long-term production experience and chemical knowledge, the inventor of this patent has verified through many experiments that the destructurizer can effectively infiltrate the structure of the rubber powder, partially break the SS bond, and the original crosslinked macromolecular network in the rubber powder. The structure becomes smaller, a small amount of chains are formed, and the sol content of the system is increased. Therefore, the present invention selects a destructuring agent to pretreat the rubber powder so that it can desulfurize and desulfurize at a low temperature.
  • the combination of SBS and rubber powder is strengthened by equal density crosslinking technology.
  • a part of the epoxy group on the crosslinking agent reacts with the unsaturated group on the SBS, and a part reacts with the carboxyl group on the surface of the carbon black in the rubber powder, and this association makes the SBS phase having a lower density.
  • the dragging of the rubber powder phase with higher density reduces the stratification tendency of the SBS-rich phase and the rubber powder phase in the matrix asphalt, thereby achieving uniform and stable dispersion in the asphalt.
  • Figure 5 is an image of the debonding agent after desulfurization degradation of the vulcanized rubber powder in the preparation of the high gum pitch masterbatch.
  • the high-performance low-temperature environmentally-friendly high-adhesive asphalt produced by using the high-glue asphalt masterbatch of the present invention has excellent performance in all aspects, and is in conformity with Exceeding the production requirements, and based on the benefits of the formula and process of its production, it is suitable for solving the problems of high shear temperature, large odor, environmental emission indicators, etc. in the traditional production process of high-glue asphalt, and is suitable for solving high-viscosity compound at the same time.
  • SBS was added to the asphalt by high-speed shearing, and then a certain proportion of stabilizer and compatibilizer was added to obtain a highly viscous modified asphalt (8 wt% SBS).
  • Glue powder and destructurizer stir and develop at 130-150
  • the rubber powder is desulfurized and degraded in the asphalt, and then prepared by adding a certain mass fraction of SBS, a stabilizer and a compatibilizer, and the obtained rubber asphalt (4.5 wt% SBS + 10 wt% rubber powder).
  • the destructurizer can effectively infiltrate the structure of the rubber powder, and partially break the SS bond.
  • the original crosslinked macromolecular network structure in the vulcanized rubber powder becomes smaller, forming a small amount of chains and increasing the sol content of the system.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne un asphalte à haute teneur en caoutchouc respectueux de l'environnement à basse température présentant une performance élevée et un procédé de production associé. Les matières premières de l'asphalte à haute teneur en caoutchouc comprennent les constituants suivants en pourcentage en poids : 60 à 80 % d'asphalte pour circulation dense, 8 à 32 % d'un mélange maître d'asphalte à haute teneur en caoutchouc, 1 à 9 % de SBS, et 0,2 à 3 % d'agent de réticulation ; le mélange maître d'asphalte à haute teneur en caoutchouc est un matériau mélangé homogène obtenu en réalisant tout d'abord une dégradation de désulfuration sur une poudre de caoutchouc désulfuré dans un agent de déconstruction puis en ajoutant de l'asphalte matriciel pour les mélanger ensemble ; l'asphalte à haute teneur en caoutchouc est un mélange obtenu en ajoutant d'abord le mélange maître d'asphalte à haute teneur en caoutchouc et le SBS dans l'asphalte pour circulation dense pour le mélange, puis en effectuant une stabilisation sur ledit mélange au moyen de l'agent de réticulation. Pour l'asphalte à haute teneur en caoutchouc, à une température d'environ 160 °C, la poudre de caoutchouc peut être bien dispersée entre les colloïdes d'asphalte, de telle sorte que les problèmes de protection de l'environnement d'odeur forte et similaires difficiles à surmonter dans la production d'asphalte modifié par du caoutchouc sont efficacement résolus.
PCT/CN2018/098405 2018-05-11 2018-08-03 Asphalte à haute teneur en caoutchouc respectueux de l'environnement à basse température présentant une performance élevée et son procédé de production WO2019214097A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810451458.7 2018-05-11
CN201810451458.7A CN109810520A (zh) 2018-05-11 2018-05-11 一种兼具高性能的低温环保化高胶沥青及其生产工艺

Publications (1)

Publication Number Publication Date
WO2019214097A1 true WO2019214097A1 (fr) 2019-11-14

Family

ID=66600118

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/098405 WO2019214097A1 (fr) 2018-05-11 2018-08-03 Asphalte à haute teneur en caoutchouc respectueux de l'environnement à basse température présentant une performance élevée et son procédé de production

Country Status (2)

Country Link
CN (1) CN109810520A (fr)
WO (1) WO2019214097A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113462172A (zh) * 2021-05-14 2021-10-01 河海大学 一种现场存储sbs改性沥青的性能提升方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113214667B (zh) * 2021-05-31 2022-06-14 海南恒建沥青路面有限公司 一种改性沥青及其制备方法
CN113698136B (zh) * 2021-07-27 2022-10-04 广东隆建工程有限公司 一种沥青摊铺组合物和沥青均匀摊铺方法
CN117466575B (zh) * 2023-12-28 2024-03-19 水润天府新材料有限公司 一种低碳循环利用改性沥青混合料的制备方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1528823A (zh) * 2003-09-26 2004-09-15 沈阳三鑫公路工程有限公司 废胶粉改性沥青的制备方法
CN103819918A (zh) * 2014-03-18 2014-05-28 上海交通大学 一种复合高粘度改性沥青及其制备方法
CN104497598A (zh) * 2014-12-12 2015-04-08 天津海泰环保科技发展有限公司 一种膏状橡胶与sbs复合改性沥青及其制备方法
CN105985531A (zh) * 2015-02-03 2016-10-05 吕刚 利用废橡胶油制备多种温度条件沥青改性剂及改性沥青的方法
CN106674589A (zh) * 2016-10-31 2017-05-17 重庆大学 用废食用油对废胎胶粉脱硫的方法及一种改性沥青的制备方法
CN107446364A (zh) * 2017-04-01 2017-12-08 江苏中路工程技术研究院有限公司 一种橡胶沥青及其制备方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1528823A (zh) * 2003-09-26 2004-09-15 沈阳三鑫公路工程有限公司 废胶粉改性沥青的制备方法
CN103819918A (zh) * 2014-03-18 2014-05-28 上海交通大学 一种复合高粘度改性沥青及其制备方法
CN104497598A (zh) * 2014-12-12 2015-04-08 天津海泰环保科技发展有限公司 一种膏状橡胶与sbs复合改性沥青及其制备方法
CN105985531A (zh) * 2015-02-03 2016-10-05 吕刚 利用废橡胶油制备多种温度条件沥青改性剂及改性沥青的方法
CN106674589A (zh) * 2016-10-31 2017-05-17 重庆大学 用废食用油对废胎胶粉脱硫的方法及一种改性沥青的制备方法
CN107446364A (zh) * 2017-04-01 2017-12-08 江苏中路工程技术研究院有限公司 一种橡胶沥青及其制备方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LI, MING: "Analysis of Segregation Test of Parent Material Technological Rubber Asphalt", NORTHERN COMMUNICATIONS, no. 6, 30 June 2008 (2008-06-30), ISSN: 1673-6052 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113462172A (zh) * 2021-05-14 2021-10-01 河海大学 一种现场存储sbs改性沥青的性能提升方法

Also Published As

Publication number Publication date
CN109810520A (zh) 2019-05-28

Similar Documents

Publication Publication Date Title
WO2019214097A1 (fr) Asphalte à haute teneur en caoutchouc respectueux de l'environnement à basse température présentant une performance élevée et son procédé de production
CN108948753B (zh) 一种温拌高粘改性沥青及其制备和应用
Duan et al. Research progress and performance evaluation of crumb-rubber-modified asphalts and their mixtures
CN109181177B (zh) 沥青路面养护剂及其制备方法和应用
CN104559242A (zh) 一种废胶粉改性沥青组合物及其制备方法
CN111286209B (zh) 一种sbs高粘改性乳化沥青材料及其制备工艺
CN111117133B (zh) 环氧树脂/乙烯基共聚物改性水基乳化沥青的制备方法
CN107446364A (zh) 一种橡胶沥青及其制备方法
WO2012103691A1 (fr) Bitume routier modifié par un modificateur composite et son procédé de préparation
KR20120122037A (ko) 유화아스팔트 형성용 개질 아스팔트, 침투성 개질 유화 아스팔트 및 아스팔트 도로포장의 보수공법
WO2018148966A1 (fr) Asphalte modifié par des particules composites de sbr et procédé pour le fabriquer
CN103897594A (zh) 一种橡胶粉改性乳化沥青防水涂料
CN113150568A (zh) 一种改性的冷拌冷铺常温沥青及其制备方法
CN111234547A (zh) 一种环保型低标号硬质沥青改性方法
CN108395707B (zh) 一种彩色沥青路面的修补材料及其制备方法
CN108424661B (zh) 一种抗剥落性能优异的复合改性乳化沥青及其制备方法
CN113698138B (zh) 一种rap高掺量的再生混合料、其制备方法及应用
WO2019214096A1 (fr) Mélange-maître d'asphalte à haute teneur en caoutchouc et procédé de fabrication à basse température, respectueux de l'environnement, de ce dernier
CN112409802B (zh) 一种高性能废轮胎胶粉改性沥青及其制备方法
CN114015356B (zh) 一种纳米纤维素改性sbr乳化沥青雾封材料及其制备方法和应用
CN110903663A (zh) 一种高强度废旧橡塑改性沥青
CN110746788B (zh) 一种高溶解性胶粉改性沥青及其制备方法
CN114853389A (zh) 一种低温再生沥青及混合料的制备方法
CN113416423A (zh) 旧沥青路面冷拌再生用添加剂和旧沥青路面冷拌再生混合料
CN109161213B (zh) 用于旧沥青冷再生的组合物及其制备方法和用途

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18917598

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18917598

Country of ref document: EP

Kind code of ref document: A1