CN1257848A - Process for preparing water reducer of cement - Google Patents

Process for preparing water reducer of cement Download PDF

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Publication number
CN1257848A
CN1257848A CN99117093A CN99117093A CN1257848A CN 1257848 A CN1257848 A CN 1257848A CN 99117093 A CN99117093 A CN 99117093A CN 99117093 A CN99117093 A CN 99117093A CN 1257848 A CN1257848 A CN 1257848A
Authority
CN
China
Prior art keywords
polystyrene
cement
sulfonated polystyrene
water
sulfonic acid
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CN99117093A
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Chinese (zh)
Other versions
CN1083808C (en
Inventor
黄玉惠
廖兵
赵树录
林果
庞浩
丛广民
陈鸣才
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Guangzhou Institute of Chemistry of CAS
Original Assignee
Guangzhou Institute of Chemistry of CAS
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 Guangzhou Institute of Chemistry of CAS filed Critical Guangzhou Institute of Chemistry of CAS
Priority to CN99117093A priority Critical patent/CN1083808C/en
Publication of CN1257848A publication Critical patent/CN1257848A/en
Application granted granted Critical
Publication of CN1083808C publication Critical patent/CN1083808C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/18—Waste materials; Refuse organic
    • C04B18/20—Waste materials; Refuse organic from macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/16—Sulfur-containing compounds
    • C04B24/161—Macromolecular compounds comprising sulfonate or sulfate groups
    • C04B24/163—Macromolecular compounds comprising sulfonate or sulfate groups obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
    • C04B2103/302—Water reducers
    • 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
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

A water reducer of cement is prepared from waste or used polystyrene through chemical modification that is to introduce sulfonic acid radicals into main chain of polystyrene until the mole percentage of sulfonic acid radicals is 20-95 mol.%, adding water for dissolving, and neutralizing with calcium hydroxide, calcium oxide, or lime to obtain the water reducer solution. Its added quantity in cement concrete is 0.2-0.7%. The water can be reduced by 22%. The final strength of cement concrete is increased by 35%.

Description

The preparation method of cement water reducing agent
The present invention relates to a kind of preparation method of cement water reducing agent.
Cement concrete is the material of construction of consumption maximum in the world, but cement concrete exist from great, intensity is lower and weakness such as fragility, discover, the water yield that its intensity and flowing property and the system of mixing add during concrete is closely related, and amount of water is many, good fluidity, favourable to constructing, but the water yield is many more, and concrete strength is low more, so the research of the diminishing of cement concrete and toughener is the practicality problem of a hot topic always.And at building field, the water reducer that uses mainly contains two big classes at present, and a class is sulfonated lignin, and this product only has water-reduction to cement, does not have tangible enhancement.One class is high-grade trimeric cyanamide or xylogen naphthalenesulfonate, excellent property, but cost an arm and a leg, so the building field urgent need is cheap, excellent property, the treatment agent that has diminishing and enhancement simultaneously.
Purpose of the present invention provides that a kind of preparation cost is cheap, the method for the cement water reducing agent of excellent property.
The present invention is by introducing sulfonic acid group on polystyrene chain, use water dissolution, be neutralized into calcium salt with calcium hydroxide, calcium oxide or lime then, make modified polystyrene have the character of the tensio-active agent of hydrophilic and oleophilic, make a kind of cement water reducing agent that cement concrete is had efficient diminishing and enhancement.
Preparation method of the present invention is as follows: (1) with polystyrene dissolving or swelling in toluene, ethylene dichloride or dimethylbenzene, weight concentration is 30%-80% (2) with chlorsulfonic acid or weight concentration is that the sulfuric acid of 50%-99% is made sulphonating agent, be heated to 80 ℃-100 ℃, reaction 3-5 hour; (3) be heated to 110 ℃-140 ℃, distillating recovering solvent 1 hour; (4) be cooled to 80 ℃, add entry, the sulfonated polystyrene is soluble in water, and making weight concentration is the sulfonated polystyrene solution of 5%-40%, is neutralized into neutrality with calcium hydroxide, calcium oxide or lime then, and the pH value is 7-8; (5) be filtered into stable cement water reducing agent solution.
The present invention mainly adopts environment is caused the waste and old polystyrol of huge pollution is raw material, the sulfonic acid group molar content of the sulfonated polystyrene that sulfonation process is made is 20-95mol%, the final sulfonated polystyrene sulfonic acid calcium salt that generates of the N-process of sulfonated polystyrene solution, character with tensio-active agent of hydrophilic and oleophilic is suitable for using as cement water reducing agent.
This water reducer content is adjustable, and to cement diminishing efficient height, high water reducing rate can be up to more than 20%.The cement concrete that adds this water reducer has that bleeding rate is low, air content is few and advantage such as shrinking percentage is little, and preparation technology is simple and easy to control.In the blunge process of cement concrete, add this water reducer, can significantly reduce the amount of mixing water, increase the intensity of cement concrete simultaneously greatly.Simultaneously, because it is to make raw material with waste and old polystyrol, cost value is low, for building trade provides the product innovation of a novel practical, has the huge market competitiveness, can create huge economic benefit and social benefit.In addition, the application of this new water reducer can solve the pollution problem of waste or used plastics to environment again,
Embodiment 1
(1) the 10g waste and old polystyrol is dissolved in the dimethylbenzene of 30ml, and in the chlorsulfonic acid adding waste and old polystyrol solution with 16.4ml, 80 ℃ of reactions 4 hours, 140 ℃ were reclaimed solvents, and the water with 100g dissolves sulfonated polystyrene then, and sulfonation degree is 78mol%.(2) add the calcium oxide neutralization of 120g, make solids content and be 15% modified waste old polystyrene plastics cement water reducing agent.
Embodiment 2
(1) the 10g waste and old polystyrol is dissolved in the 25ml toluene, and in 95% vitriol oil adding polystyrene solution with 18ml, 90 ℃ of reactions 5 hours, 140 ℃ were reclaimed solvents, and the water with 180g dissolves sulfonated polystyrene then, and sulfonation degree is 82mol%.(2) add the calcium hydroxide neutralization of 14g, make solids content and be 10% modified waste old polystyrene plastics cement water reducing agent.
Embodiment 3
(1) the 10g waste and old polystyrol is dissolved in 30ml1, and in 2 ethylene dichloride, in the chlorsulfonic acid adding polystyrene solution with 16ml, 80 ℃ of reactions 4.5 hours, the water with 80g dissolved sulfonated polystyrene then, and sulfonation degree is 78mol%.(2) add the calcium hydroxide neutralization of 14g, make solids content and be 30% modified waste old polystyrene plastics cement water reducing agent.

Claims (4)

1, a kind of preparation method of cement water reducing agent is characterized in that: with the polystyrene sulfonation, with the alkali neutralization, the steps include: again
(1) with polystyrene dissolving or swelling in toluene, ethylene dichloride or dimethylbenzene, weight concentration is 30%-80%; (2) make sulphonating agent with the sulfuric acid of chlorsulfonic acid or 50%-99%, be heated to 80 ℃-100 ℃, reaction 3-5 hour; (3) be heated to 110 ℃-140 ℃, distillating recovering solvent 1 hour; (4) be cooled to 80 ℃, add entry, the sulfonated polystyrene is soluble in water, and making weight concentration is the sulfonated polystyrene solution of 5%-40%, is neutralized into neutrality with calcium hydroxide, calcium oxide or lime then, and the pH value is 7-8; (5) be filtered into stable cement water reducing agent solution.
2, method according to claim 1 is characterized in that: polystyrene is a waste and old polystyrol.
3, method according to claim 1 is characterized in that: described sulfonation process is to make the sulfonated polystyrene that the sulfonic acid group molar content is 20-95mol%.
4, method according to claim 1 is characterized in that: the N-process of described sulfonated polystyrene solution finally is to generate sulfonated polystyrene sulfonic acid calcium salt.
CN99117093A 1999-09-14 1999-09-14 Process for preparing water reducer of cement Expired - Fee Related CN1083808C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN99117093A CN1083808C (en) 1999-09-14 1999-09-14 Process for preparing water reducer of cement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN99117093A CN1083808C (en) 1999-09-14 1999-09-14 Process for preparing water reducer of cement

Publications (2)

Publication Number Publication Date
CN1257848A true CN1257848A (en) 2000-06-28
CN1083808C CN1083808C (en) 2002-05-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN99117093A Expired - Fee Related CN1083808C (en) 1999-09-14 1999-09-14 Process for preparing water reducer of cement

Country Status (1)

Country Link
CN (1) CN1083808C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101831029A (en) * 2010-06-03 2010-09-15 天津大学 Method for preparing cement water reducer by utilizing styrene-acryonitrile copolymer waste
CN102603943A (en) * 2012-03-23 2012-07-25 辽宁岩砂晶建材有限公司 Method of using waste polystyrene foam to produce water reducing agent and thermal degradation equipment required by method
CN103011664A (en) * 2012-12-25 2013-04-03 山东省莱芜市汶河化工有限公司 High efficiency water reducing agent produced from waste polystyrene plastics, and production method thereof
CN106277898A (en) * 2016-08-16 2017-01-04 金陵科技学院 A kind of preparation method of sulfonation waste polystyrene foamed plastics high-performance water reducing agent
CN114702628A (en) * 2022-03-25 2022-07-05 湖南中岩建材科技有限公司 Water reducing agent modifier and preparation method and application thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1062534C (en) * 1996-06-14 2001-02-28 中国石油化工总公司石油化工科学研究院 Efficient concrete water-reducing agent
CN1057554C (en) * 1997-03-10 2000-10-18 中国科学院广州化学研究所 Water based paint prepared with waste polystyrene
CN1057553C (en) * 1997-03-10 2000-10-18 中国科学院广州化学研究所 Process for preparing water based paint using waste polystyrene as raw material

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101831029A (en) * 2010-06-03 2010-09-15 天津大学 Method for preparing cement water reducer by utilizing styrene-acryonitrile copolymer waste
CN102603943A (en) * 2012-03-23 2012-07-25 辽宁岩砂晶建材有限公司 Method of using waste polystyrene foam to produce water reducing agent and thermal degradation equipment required by method
CN103011664A (en) * 2012-12-25 2013-04-03 山东省莱芜市汶河化工有限公司 High efficiency water reducing agent produced from waste polystyrene plastics, and production method thereof
CN103011664B (en) * 2012-12-25 2015-05-06 山东省莱芜市汶河化工有限公司 High efficiency water reducing agent produced from waste polystyrene plastics, and production method thereof
CN106277898A (en) * 2016-08-16 2017-01-04 金陵科技学院 A kind of preparation method of sulfonation waste polystyrene foamed plastics high-performance water reducing agent
CN114702628A (en) * 2022-03-25 2022-07-05 湖南中岩建材科技有限公司 Water reducing agent modifier and preparation method and application thereof
CN114702628B (en) * 2022-03-25 2023-12-26 湖南中岩建材科技有限公司 Water reducer modifier and preparation method and application thereof

Also Published As

Publication number Publication date
CN1083808C (en) 2002-05-01

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Owner name: HANBANG CHEMICAL CO., LTD., GUANGZHOU CITY

Free format text: FORMER OWNER: GUANGZHOU INST OF CHEMISTRY, CHINESE ACADEMY OF SCIENCES

Effective date: 20030620

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Effective date of registration: 20030620

Address after: Luo Gang Cun Zhu Zi Shan, 511300 Guangzhou Zengcheng city of Li Cheng

Patentee after: Guangzhou Inst. of Chemistry, Chinses Academy of Sceiences

Address before: Guangdong city of Guangzhou province Wushan 510650 box 1122

Patentee before: Guangzhou Inst. of Chemistry, Chinese Academy of Sciences

C19 Lapse of patent right due to non-payment of the annual fee
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