CN105969286A - Assembled building concrete joint weather-resistant sealant and preparation method thereof - Google Patents
Assembled building concrete joint weather-resistant sealant and preparation method thereof Download PDFInfo
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- CN105969286A CN105969286A CN201610392414.2A CN201610392414A CN105969286A CN 105969286 A CN105969286 A CN 105969286A CN 201610392414 A CN201610392414 A CN 201610392414A CN 105969286 A CN105969286 A CN 105969286A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J171/00—Adhesives based on polyethers obtained by reactions forming an ether link in the main chain; Adhesives based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/08—Ingredients agglomerated by treatment with a binding agent
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention provides a preparation method of an assembled building concrete joint weather-resistant sealant. The assembled building concrete joint weather-resistant sealant is prepared from, by weight, 20-50 parts of a silicon-terminated alkyl modified polyether polymer, 5-25 parts of an active branched plasticizer, 5-15 parts of nano calcium carbonate, 15-45 parts of heavy calcium carbonate, 0.1-5 parts of a thixotropic agent, 0.1-2 parts of a moisture scavenger, 0.1-5 parts of a silane coupling agent, 0.1-3 parts of a functional additive and 0.1-2 parts of catalyst. Due to the fact that the active branched plasticizer is introduced in the weather-resistant sealant, the weather-resistant sealant has good compatibility with sealant matrix resin. Carboxyl of the plasticizer and calcium ions of a nano calcium carbonate material have a strong adsorption effect, the dual effects of well dispersing nano particles and constraining the plasticizer are played, and the problem that oil leakage pollution and hardness increase are caused by migration or loss of the plasticizer, the elongation is reduced and accordingly the elasticity recovery rate of a product is influenced is effectively solved.
Description
Technical field
The present invention relates to a kind of weather proofing sealant, particularly to the preparation method of a kind of assembly concrete seam weather proofing sealant.
Background technology
Building sealant is that building seals a waterproof series products as one important composition parts of building joint.Along with improving constantly of modern building technology, housing industrialization is flourish China mainland area, and Maturity, matching and the professional necessity of technology are highlighted by it.The feature of housing industrialization maximum is factory prefabricating, on-site consolidation operation.And encapsulant plays vital effect in the technical system of industrialization assembled-type house.It is concrete substrate that assembled-type house precast wall panel assembly is met, there is following two feature: (1) concrete material belongs to basic matterial, being essentially different with glass curtain wall, stone material, metal, aluminium plastic material, bonding, the compatibility to fluid sealant have new, higher requirement.(2) concrete is porous material, fluid sealant component usually contains little molecule plasticizer or volatile oily matter, as CN 102504748 B and CN 103694946 B all have employed the little molecule plasticizer such as dibutyl phthalate, dioctyl phthalate, as this kind of plasticizer is along with the prolongation of fluid sealant active time, cause fluid sealant that stream Heisui River or stream oil condition occur, concrete joint periphery is easily produced greasy dirt dye, impact building overall appearance.Due to little molecule migration of plasticizer and loss, causing fluid sealant hardness to increase, percentage elongation reduces, and affects elastic restoration ratio and the sealing effectiveness of product.Therefore, how to develop that a kind of to make fluid sealant and concrete substrate strong bond, oil-tight pollution, high-weatherability, the long-term product keeping favorable elasticity be urgent problem.
Summary of the invention
Based on the problem existing for above-mentioned technology, the embodiment of the present invention provides the preparation method of a kind of assembly concrete seam weather proofing sealant, to solve fluid sealant and the problem such as concrete excellent compatibility and nonstaining property.
The purpose of the present invention is achieved by the following technical programs:
A kind of assembly concrete seam weather proofing sealant that the present invention provides, consists of according to its raw material of mass fraction: end-silicane-group modified polyether polymer 20~50 parts, active branched plasticizer 5~25 parts, nano-calcium carbonate 5~15 parts, ground calcium carbonate 15~45 parts, thixotropic agent 0.1~5 parts, deicer 0.1~2 parts, silane coupler 0.1~5 parts, function additive 0.1~3 parts, catalyst 0.1~2 parts.
Further, the branched plasticizer of activity of the present invention is to be 1: 0.2~2 by polyether-tribasic alcohol, dibasic acid anhydride by the amount ratio of material, through esterification prepare band pendant carboxylic group, the branching type plasticizer of hydroxyl, weight average molecular weight is 500~5000, and hydroxyl value is 50~400.
Thixotropic agent of the present invention is one or more in hydrophobic fumed silica, castor oil hydrogenated, organobentonite.
Deicer of the present invention is vinyltrimethoxy silane or oxazole alkanes deicer.
Function additive of the present invention is hindered amine light stabilizer and Hinered phenols antioxidant.
Catalyst of the present invention is one or more in organo-tin compound, bismuth organic compound and alkylamine.
A kind of assembly concrete seam weather proofing sealant of the present invention, its preparation method:
(1) nano-calcium carbonate and ground calcium carbonate are placed in drying baker at 120~150 DEG C dry 3~20h;
(2) by dried nano-calcium carbonate 5~15 parts of mixing in active branched plasticizer 5~25 parts, step (1), it is uniformly dispersed through sand milling 1~3h;
(3) compound, thixotropic agent 0.1~5 parts, function additive 0.1~3 parts that will obtain in the ground calcium carbonate 15 being dried in end-silicane-group modified polyether polymer 20~50 parts, step (1)~45 parts, step (2), at 60~90 DEG C, vacuum protection is blended 1~2 hour;
(4) 50~60 DEG C it are cooled to, addition deicer 0.1~2 parts, silane coupler 0.1~5 parts and catalyst 0.1~2 parts, vacuum stirring 0.5~1 hour, obtain assembly concrete seam weather proofing sealant.
The preparation principle of this material is: the branched plasticizer of described activity plays the effect of active plasticization in sealant formula system.The branched plasticizer molecule structure of activity is branch polyether chain structure, has excellent compatibility with fluid sealant matrix resin.Carboxyl on plasticizer has stronger adsorption with the calcium ion of Nano-Calcium Carbonate, play good dispersing nanoparticles and the dual function of constraint plasticizer, solving plasticizer causes the pollution of fluid sealant permeability, hardness to increase because migrating or running off, percentage elongation reduces, and affects elastic restoration ratio and the sealing effectiveness of product.
It is an advantage of the current invention that:
Product of the present invention can have excellent compatibility with celluar concrete material, it is possible to effectively solves fluid sealant permeability and concrete surface pollution problem.
Product of the present invention and concrete alkalescence interface have the caking property of excellence.
Detailed description of the invention
Embodiment 1:
Nano-calcium carbonate and ground calcium carbonate are placed in drying baker at 120 DEG C and are dried 6h;By active branched plasticizer 15 parts, dried nano-calcium carbonate 10 parts mixing, it is uniformly dispersed through sand milling 1h;Adding end-silicane-group modified polyether polymer 45 parts, the ground calcium carbonate 25 parts, hydrophobic fumed silica 3 parts, light stabilizer UV-326 and the antioxidant 1010 totally 2 parts that are dried, at 75 DEG C, vacuum protection is blended 2 hours;It is cooled to 55 DEG C, adds vinyltrimethoxy silane deicer 0.5 part, N-β-aminoethyl-Υ-aminopropyl trimethoxysilane 1 part and stannous octoate catalyst 0.5 part, vacuum stirring 0.5 hour, obtain assembly concrete seam weather proofing sealant.
Embodiment 2:
Nano-calcium carbonate and ground calcium carbonate are placed in drying baker at 110 DEG C and are dried 8h;By active branched plasticizer 15 parts, dried nano-calcium carbonate 6 parts mixing, it is uniformly dispersed through sand milling 1h;Adding end-silicane-group modified polyether polymer 40 parts, the ground calcium carbonate 30 parts, castor oil hydrogenated 3 parts, light stabilizer UV-770 and totally 2 parts of the antioxidant 1024 that are dried, at 70 DEG C, vacuum protection is blended 2 hours;It is cooled to 60 DEG C, adds oxazole alkanes deicer 2 parts, Υ-glycydoxy trimethoxy silane 1 part and stannous octoate 1 part, vacuum stirring 1 hour, obtain assembly concrete seam weather proofing sealant.
Embodiment 3:
Nano-calcium carbonate and ground calcium carbonate are placed in drying baker at 105 DEG C and are dried 9h;By active branched plasticizer 12 parts, dried nano-calcium carbonate 12 parts mixing, it is uniformly dispersed through sand milling 1.5h;Adding end-silicane-group modified polyether polymer 40 parts, the ground calcium carbonate 25 parts, organobentonite 5 parts, light stabilizer UV-320 and totally 2.2 parts of the antioxidant 245 that are dried, at 70 DEG C, vacuum protection is blended 2 hours;It is cooled to 60 DEG C, adds vinyltrimethoxy silane deicer 1.5 parts, Υ-aminopropyl trimethoxysilane 1.5 parts and organic bismuth catalyst 0.8 part, vacuum stirring 0.5 hour, obtain assembly concrete seam weather proofing sealant.
In the description of this specification, if occurring, the description of term " embodiment ", " some embodiments ", " specific embodiment " etc. means that the specific features, structure, material or the feature that combine this embodiment or example description are contained at least one embodiment or the example of the present invention.In this manual, the schematic representation to above-mentioned term is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can combine in any one or more embodiments or example in an appropriate manner.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (7)
1. the preparation method of an assembly concrete seam weather proofing sealant, it is characterised in that include the former of following mass parts
Material:
Described end-silicane-group modified polyether polymer is the polypropylene oxide ether of end group hydrolyzable silane base.The branched plasticising of described activity
Agent is to be 1: 0.2~2 by polyether-tribasic alcohol, dibasic acid anhydride by the amount ratio of material, the band pendant carboxylic group for preparing through esterification, hydroxyl
Branching type plasticizer, weight average molecular weight is 500~5000, and hydroxyl value is 50~400.
The preparation method of a kind of assembly concrete seam weather proofing sealant the most according to claim 1, it is characterised in that
Described thixotropic agent is one or more in hydrophobic fumed silica, castor oil hydrogenated, organobentonite.
The preparation method of a kind of assembly concrete seam weather proofing sealant the most according to claim 1, it is characterised in that
Described deicer is vinyltrimethoxy silane or oxazole alkanes deicer.
The preparation method of a kind of assembly concrete seam weather proofing sealant the most according to claim 1, it is characterised in that
Described silane coupler is γ-aminopropyltrimethoxysilane, N-β-aminoethyl-γ-aminopropyltrimethoxysilane, γ-shrink
One or more in glycerin ether epoxide propyl trimethoxy silicane.
The preparation method of a kind of assembly concrete seam weather proofing sealant the most according to claim 1, it is characterised in that
Described function additive be light stabilizer UV-326, UV-327, UV-320, UV-770 and antioxidant 245, antioxidant 1010,
One or more in antioxidant 1076, antioxidant 1024.
The preparation method of a kind of assembly concrete seam weather proofing sealant the most according to claim 1, it is characterised in that
Described catalyst is one or more in organo-tin compound, bismuth organic compound and alkylamine.
7. according to the preparation method of a kind of assembly concrete seam weather proofing sealant described in any one of claim 1~6, its
It is characterised by comprising the following steps:
(1) nano-calcium carbonate and ground calcium carbonate are placed in drying baker at 120~150 DEG C dry 3~20h;
(2) by dried nano-calcium carbonate 5~15 parts of mixing in active branched plasticizer 5~25 parts, step (1), through sand
Mill 1~3h is uniformly dispersed;
(3) by the ground calcium carbonate 15 being dried in end-silicane-group modified polyether polymer 20~50 parts, step (1)~45 parts,
Compound, thixotropic agent 0.1~5 parts, function additive 0.1~3 parts obtained in step (2), vacuum protection at 60~90 DEG C
It is blended 1~2 hour;
(4) 50~60 DEG C it are cooled to, addition deicer 0.1~2 parts, silane coupler 0.1~5 parts and catalyst 0.1~2 parts,
Vacuum stirring 0.5~1 hour, obtain assembly concrete seam weather proofing sealant.
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108165223A (en) * | 2017-12-14 | 2018-06-15 | 湖北回天新材料股份有限公司 | A kind of assembly concrete building joint multicomponent fluid sealant and preparation method thereof |
CN108893087A (en) * | 2018-07-12 | 2018-11-27 | 广西德本仕密封材料有限公司 | A kind of flame-retardant, silane modified polyether seal glue and preparation method thereof |
CN109679556A (en) * | 2018-12-20 | 2019-04-26 | 烟台德邦科技有限公司 | A kind of preparation method of the silane-modified sealant of environment-friendly type |
CN110408359A (en) * | 2019-08-19 | 2019-11-05 | 浙江皇马科技股份有限公司 | A kind of silane-terminated polyether sealant and its preparation method and application |
CN112898934A (en) * | 2021-03-01 | 2021-06-04 | 重庆坤飞建设(集团)有限公司 | Fabricated building weather-resistant sealant and preparation method thereof |
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CN108893087B (en) * | 2018-07-12 | 2021-05-18 | 广西德本仕密封材料有限公司 | Flame-retardant silane modified polyether sealant and preparation method thereof |
CN109679556A (en) * | 2018-12-20 | 2019-04-26 | 烟台德邦科技有限公司 | A kind of preparation method of the silane-modified sealant of environment-friendly type |
CN110408359A (en) * | 2019-08-19 | 2019-11-05 | 浙江皇马科技股份有限公司 | A kind of silane-terminated polyether sealant and its preparation method and application |
CN112898934A (en) * | 2021-03-01 | 2021-06-04 | 重庆坤飞建设(集团)有限公司 | Fabricated building weather-resistant sealant and preparation method thereof |
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