CN1067353C - Concrete interface treating agent and its preparation - Google Patents

Concrete interface treating agent and its preparation Download PDF

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Publication number
CN1067353C
CN1067353C CN98103016A CN98103016A CN1067353C CN 1067353 C CN1067353 C CN 1067353C CN 98103016 A CN98103016 A CN 98103016A CN 98103016 A CN98103016 A CN 98103016A CN 1067353 C CN1067353 C CN 1067353C
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CN
China
Prior art keywords
water
formaldehyde
urea
micelle
treating agent
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Expired - Fee Related
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CN98103016A
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Chinese (zh)
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CN1241548A (en
Inventor
李金生
李环宇
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李金生
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Priority to CN98103016A priority Critical patent/CN1067353C/en
Publication of CN1241548A publication Critical patent/CN1241548A/en
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Publication of CN1067353C publication Critical patent/CN1067353C/en
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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/46Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
    • C04B41/48Macromolecular compounds
    • C04B41/4811Condensation polymers of aldehydes or ketones
    • C04B41/4819Urea-formaldehyde condensation products
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/50Defoamers, air detrainers
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00034Physico-chemical characteristics of the mixtures
    • C04B2111/00112Mixtures characterised by specific pH values

Abstract

The present invention relates to a concrete interface treating agent and a preparation method thereof. The concrete interface treating agent has the technical scheme that polyvinyl alcohol and formaldehyde are aldolized under the acid condition to be activated to carry out the free formaldehyde processing with urea when pH is equal to 4 to 5, so ethylidene ether micelle and urea-formaldehyde resin can be together dissolved in water to form a transparent glue solution, styrene-acrylate emulsion is added under the condition that the pH is equal to 8 to 9, and the glue solution and the styrene-acrylate emulsion are stirred to be manufactured into the milky interface treating agent. The interface treated agent can be used for bonding the interfaces of concrete, gypsum, paper and fiber fabric surfaces and can also be mixed with sand stone and cement to be used for bonding ceramic tiles and mosaic. A product prepared by the method can eliminate the damage to human bodies and the pollution to the environment by free formaldehyde, and the cohesive force, the water repellency and the construction performance are enhanced.

Description

Concrete interface treating agent and preparation method
The present invention relates to the processing bonding that a kind of concrete interface treating agent for building can be used for the interface of concrete, gypsum, paper, fiber surface of second order, also can with the bonding of mixing of sandstone, cement to ceramic tile, mosaic, the invention still further relates to the preparation method of this treatment agent.
The processing bonding that is used for boundary stones such as concrete, gypsum, paper at present, the 107 building glue that most employings are traditional, this glue can improve cohesiveness, frost resistance, moisture resistivity, fungi-proofing, ageing-resistant advantage in cement or mortar, but owing to contain free formaldehyde (national building material industry standard is≤0.5%) in this glue, free formaldehyde content is higher or when exceeding standard, HUMAN HEALTH there is infringement, but also contaminate environment, the national for this reason urban and rural buildings council clearly stipulates, forbids using under construction 107 glue.Many for this reason researchists are actively making great efforts to address this problem, but some method because the preparation method is unreasonable, can not be eliminated free formaldehyde fully, and because 107 glue are water-soluble glue, its repellency can be bad.
Purpose of the present invention just for the shortcoming that overcomes above-mentioned prior art with not enough, on the basis of the advantage that makes full use of 107 glue, provide concrete interface treating agent and preparation method thereof, thereby eliminate the harm of formaldehyde and improved the performance of product.
Technical scheme of the present invention realizes by following technical proposal: concrete interface treating agent is characterized in that it is to be made by the following weight proportion raw material:
Polyvinyl alcohol 4.5-5.0 part, formaldehyde 2-2.5 part, urea 1.0-1.5 part, latex of copolymer in cinnamic acrylic ester 2.0-2.5 part, tributyl phosphate 0-0.2 part, water 88-92 part.
Raw materials used polyvinyl alcohol is the PVA-1799 model, formaldehyde technical grade content 36.5-37.4%, and the urea industry level contains N 46%, and latex of copolymer in cinnamic acrylic ester is the BC-01 type.
The preparation method of concrete interface treating agent is characterized in that it follows these steps to carry out:
A) earlier 70% of 88-92 part water is added in the reactor, be heated to 40-70 ℃, add 4.5-5.0 part polyvinyl alcohol again and stir, and continue to be warming up to 85 ℃-100 ℃, stirs that temperature adjustment adds acid accent P to 90-93 ℃ after 0.5-2.0 hour H=1.5-2.0 adds 2-2.5 part formaldehyde again and carries out aldolization, until the floating water surface of acetal micelle that is translucent,
B) after intensifying micelle in the surplus 30% water adding reactor, transfer P rapidly then with alkali HDuring=4-5, add 1-1.5 part urea the aqueous phase free formaldehyde is handled fully, make it to generate gradually urea-formaldehyde resin;
C) being cooled to 50-55 ℃ then makes (a) acetal micelle and (b) urea-formaldehyde resin form transparent glue in molten water altogether;
D) at last (c) transparent glue is transferred P again with alkali HLeave standstill during=8-9 after 6-12 hour and to add 2-2.5 part latex of copolymer in cinnamic acrylic ester and stir, add 0-0.2 part tributyl phosphate or ethylene glycol again and carry out froth breaking and obtain the interface treating agent product.
Transfer P HUsed acid is hydrochloric acid, and used alkali is sodium hydroxide; The water that water intensifies micelle is normal-temperature water.
The deficiency that the present invention exists according to 107 glue adopts normal-temperature water that the acetal micelle is intensified, and to improve intermolecular density, increases cohesiveness; Adopt urea and free formaldehyde at P HAqueous phase free formaldehyde is handled fully, and can all make free formaldehyde be converted into urea-formaldehyde resin, and carry out crosslinking reaction with polyvinyl alcohol again, thereby improved the polyvinyl alcohol adhesive property, because 107 glue are hemiacetal glue, so water tolerance is had tangible deficiency, the present invention is eliminating on the basis of free formaldehyde, and good weathering resistance, water tolerance, the alkali resistance of having selected latex of copolymer in cinnamic acrylic ester to utilize it again to have can improve this product repellency and cohesive force, alkaline-resisting, light fastness.The present invention makes defoamer with tributyl phosphate, but winter spent glycol.This product detects through building materials quality supervision and inspection station, Beijing, and its result is as follows:
Test basis: northern city's standard concrete interface treating agent utilisation technology rules (declaration original text)
Project Unit Standard value Measured value Individual event is judged
Compression shear strength The water-fast freeze-thawing resistant of former intensity MPa MPa MPa ≥0.70 ≥0.5 ≥0.5 0.87 0.64 0.84 Meet
Check conclusion and suggestion: this product is through checking: the requirement of above performance index conformance with standard, and this product is white emulsion state, and is not stratified, do not precipitate, on probation through the user, reaction is good.
Owing to take technique scheme to make the technology of the present invention compared with the prior art have following advantage and effect:
A) eliminated the harm of free formaldehyde, improved environment, be nontoxic product human body;
B) cohesive force is strong, can be enhanced about more than once, and scolds waterpower strong;
C) good stability has good workability;
D) raw material is easy to get, and produces the no three wastes;
E) purposes is wide.
Embodiment is raw materials used, and polyvinyl alcohol is PVA-1799, and formaldehyde content is 37% technical grade.Urea contains N 46% technical grade, and latex of copolymer in cinnamic acrylic ester is the BC-01 type.
Embodiment 1.
Water withdrawal 61.6kg adds in the reactor, heats 40-50 ℃, adds polyvinyl alcohol 4.5kg.Stir, and continue to be warming up to 100 ℃, stir after 0.5 hour temperature adjustment 90-93 ℃, transfer P with hydrochloric acid H=1.5 backs add formaldehyde 2.0kg and carry out aldolization, until the floating water surface of acetal micelle that is translucent, add the surplus normal-temperature water then rapidly and intensify micelle for 26.4 kilograms, transfer P with sodium hydroxide H=4, add urea 1.2kg again the aqueous phase free formaldehyde is handled fully, form urea-formaldehyde resin, lowering the temperature makes the acetal micelle after 50-55 ℃ again, and urea-formaldehyde resin is the transparent glue of water-soluble formation altogether, transfers P with sodium hydroxide more at last H=8, leave standstill 6 hours after, add latex of copolymer in cinnamic acrylic ester 2.5kg, stir, add 0.2kg tributyl phosphate froth breaking, obtain the concrete interface treating agent product.
Embodiment 2.
Water withdrawal 64.4kg adds in the reactor, heats 50-55 ℃, adds polyvinyl alcohol 5.0kg.Stir, and continue to be warming up to 85 ℃, stir after 2 hours temperature adjustment 90-93 ℃.Transfer P with hydrochloric acid H=1.8 backs add formaldehyde 2.5kg and carry out aldolization, until the floating water surface of acetal micelle that is translucent, add the surplus normal-temperature water then rapidly and intensify micelle for 27.6 kilograms, transfer P with sodium hydroxide H=5, add urea 1.5kg again the aqueous phase free formaldehyde is handled fully, form urea-formaldehyde resin, lowering the temperature makes the acetal micelle after 50-55 ℃ again, and urea-formaldehyde resin is the transparent glue of water-soluble formation altogether, transfers P with sodium hydroxide more at last H=8.5, leave standstill 8 hours after, add latex of copolymer in cinnamic acrylic ester 2.0kg, stir, add 0.2kg tributyl phosphate froth breaking, obtain the concrete interface treating agent product.
Embodiment 3.
Water withdrawal 63kg adds in the reactor, heats 65-70 ℃, adds polyvinyl alcohol 4.7kg.Stir, and continue to be warming up to 90 ℃, stir after 1 hour temperature adjustment 90-93 ℃.Transfer P with hydrochloric acid H=2.0 backs add formaldehyde 2.3kg and carry out aldolization, until the floating water surface of acetal micelle that is translucent, add the surplus normal-temperature water then rapidly and intensify micelle for 27.0 kilograms, transfer P with sodium hydroxide H=4.5, add urea 1.0kg again the aqueous phase free formaldehyde is handled fully, form urea-formaldehyde resin, lowering the temperature makes the acetal micelle after 50-55 ℃ again, and urea-formaldehyde resin is the transparent glue of water-soluble formation altogether, transfers P with sodium hydroxide more at last H=9, leave standstill 12 hours after, add latex of copolymer in cinnamic acrylic ester 2.2kg, stir, obtain the concrete interface treating agent product.

Claims (5)

1. concrete interface treating agent is characterized in that it is to be made by the following weight proportion raw material:
Polyvinyl alcohol 4.5-5.0 part, formaldehyde 2-2.5 part, urea 1.0-1.5 part, latex of copolymer in cinnamic acrylic ester 2.0-2.5 part, tributyl phosphate 0-0.2 part, water 88-92 part.
2. treatment agent according to claim 1 is characterized in that raw materials used polyvinyl alcohol is the PVA-1799 model, formaldehyde technical grade content 36.5-37.4%, and the urea industry level contains N 46%, and latex of copolymer in cinnamic acrylic ester is the BC-01 type.
3. the preparation method of treatment agent according to claim 1 is characterized in that it follows these steps to carry out:
A) earlier 70% of 88-92 part water is added in the reactor, be heated to 40-70 ℃, add 4.5-5.0 part polyvinyl alcohol again and stir, and continue to be warming up to 85 ℃-100 ℃, stirs that temperature adjustment adds acid accent P to 90-93 ℃ after 0.5-2.0 hour H=1.5-2.0 adds 2-2.5 part formaldehyde again and carries out aldolization, until the floating water surface of acetal micelle that is translucent;
B) after intensifying micelle in the surplus 30% water adding reactor, transfer P rapidly then with alkali HDuring=4-5, add 1-1.5 part urea the aqueous phase free formaldehyde is handled fully, make it to generate gradually urea-formaldehyde resin;
C) being cooled to 50-55 ℃ then makes (a) acetal micelle and (b) urea-formaldehyde resin form transparent glue in molten water altogether;
D) at last (c) transparent glue is transferred P again with alkali HLeave standstill during=8-9 after 6-12 hour and to add 2-2.5 part latex of copolymer in cinnamic acrylic ester and stir, add 0-0.2 part tributyl phosphate or ethylene glycol again and carry out froth breaking and obtain the interface treating agent product.
4. preparation method according to claim 3 is characterized in that transferring P HUsed acid is hydrochloric acid, and used alkali is sodium hydroxide.
5. preparation method according to claim 3 is characterized in that the water that water intensifies micelle is normal-temperature water.
CN98103016A 1998-07-15 1998-07-15 Concrete interface treating agent and its preparation Expired - Fee Related CN1067353C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN98103016A CN1067353C (en) 1998-07-15 1998-07-15 Concrete interface treating agent and its preparation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN98103016A CN1067353C (en) 1998-07-15 1998-07-15 Concrete interface treating agent and its preparation

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CN1067353C true CN1067353C (en) 2001-06-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI571553B (en) * 2012-06-07 2017-02-21 Usg室內建材有限責任公司 Cotaed ceiling tile with increased dimensional stability

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100497469C (en) * 2007-09-24 2009-06-10 林玉珠 Environment-friendly type macromolecule surfacant
CN102643059B (en) * 2012-04-27 2013-08-14 中国水电顾问集团成都勘测设计研究院 Bonding treating agent for concrete inorganic interface
CN103193417B (en) * 2013-04-24 2015-01-07 长安大学 Rapid cold-patch material for urea formaldehyde-based bituminous pavement and preparation method thereof
CN103540282B (en) * 2013-09-16 2015-07-08 浙江农林大学 Urea-formaldehyde resin wood adhesive modifier and applications thereof
CN112047662B (en) * 2020-08-25 2021-06-18 北京金隅水泥节能科技有限公司 Retarder and production process and application thereof
CN112374792B (en) * 2020-11-27 2021-09-07 四川大学 High-performance concrete interface modifier and controllable preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1126189A (en) * 1994-01-05 1996-07-10 吕孟静 Concrete layer processing agent
CN1175937A (en) * 1995-10-16 1998-03-11 株式会社P&E国际 Method and agent for treating calcium-contg. inorganic material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1126189A (en) * 1994-01-05 1996-07-10 吕孟静 Concrete layer processing agent
CN1175937A (en) * 1995-10-16 1998-03-11 株式会社P&E国际 Method and agent for treating calcium-contg. inorganic material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI571553B (en) * 2012-06-07 2017-02-21 Usg室內建材有限責任公司 Cotaed ceiling tile with increased dimensional stability

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