CN111574931A - Smashing-free brick-plugging-free moisture-curing liquid waterproof repair liquid - Google Patents
Smashing-free brick-plugging-free moisture-curing liquid waterproof repair liquid Download PDFInfo
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- CN111574931A CN111574931A CN202010447008.8A CN202010447008A CN111574931A CN 111574931 A CN111574931 A CN 111574931A CN 202010447008 A CN202010447008 A CN 202010447008A CN 111574931 A CN111574931 A CN 111574931A
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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
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
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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
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
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- Paints Or Removers (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a pounding-free brick-plugging moisture-curing liquid waterproof repair liquid (C), which comprises the following components in part by weight: the alkoxysilane-modified polymer (A), a catalyst selected from the group consisting of metal-containing catalysts, guanidines and imidazoles (C1), and a catalyst comprising units of formula (II) (C2), may further comprise a reactive diluent (D) having the structure of formula (III): p1‑[(CR1 2)a‑Si(OR2)bR3 (3‑b)]c(I)BfSi(OR4)dR5 eO(4‑f‑d‑e)/2(II)R8‑[Si(OR6)gR7 (3‑g)]h(III) the moisture-curable liquid water-repellent composition (C) hasThe low viscosity and high reactivity can permeate along gaps of ceramic tiles and gaps around pipelines, and the like, and the whole body is hydrolyzed, crosslinked and cured into an elastomer after encountering water, so that the brick-smashing-free waterproof plugging is carried out, and the waterproof plugging agent is used for waterproof repairing in indoor kitchens and bathrooms, repairing of roof waterproof materials and the like.
Description
Technical Field
The invention relates to a moisture-curing liquid waterproof composition, in particular to a moisture-curing liquid waterproof repairing liquid based on siloxane modified polymer and used for preventing brick smashing and leaking stoppage; belongs to the technical field of materials.
Background
For building construction, water resistance is one of the most basic requirements. With the continuous improvement of living standard, the requirements of people on the use function and the design standard of kitchens and bathrooms are higher and higher. Generally, the floor of the kitchen and the toilet of the newly built house should be subjected to waterproof treatment according to certain requirements, and when the original waterproof layer is intact, the leakage phenomenon cannot occur after decoration. However, when a house is finished, the original building waterproof structure is easily damaged because the waterproof is not professional or the quality of the used waterproof material is poor, or in the actual home finishing, some facilities and equipment in the kitchen and bathroom are added or moved, the floor-penetrating pipeline is rearranged, the wall body of the kitchen and bathroom is transformed, the sunken bathroom is backfilled on the waterproof layer, and the like. The leakage phenomenon appears after the house is in place or after a period of time, the leakage problem of kitchens and bathrooms is particularly prominent, and the lives of residents at home and downstairs are seriously influenced.
Under the condition, the kitchen and toilet needs to be subjected to waterproof and leakage stoppage treatment, and the existing various kitchen and toilet leakage stoppage technologies have the following technical problems:
(1) smashing the brick and reworking to prevent water: the method needs to completely pound and clean the ceramic tiles in the leakage kitchens and toilets, repair the base surface, perform waterproof layer construction again, and then paste the tiles again, so that the construction period is long and the cost is high;
(2) cutting bricks and mending leakage: leakage points need to be checked in detail, the requirement on the quality of constructors is high, and if the leakage points are not found out accurately, effective leakage stoppage cannot be carried out;
(3) high-pressure grouting: grouting materials are generally organic reactants, are easy to age and damage after a long time, and are poorer in bonding with inorganic base materials such as concrete and the like compared with cement-based materials; the method is suitable for the condition that the leakage points or cracks are obvious; after a leakage point or a crack of a toilet is explored, a hole distribution scheme needs to be reasonably designed downstairs, a proper grouting hole is selected, then a wall is drilled for punching, a grouting nozzle is fixed, and a grouting plugging agent is grouted into the concrete by using a high-pressure grouting machine; the construction personnel are required to have higher quality and influence the life of downstairs residents.
Based on the problems, along with the development of the technology, a novel anti-smashing brick waterproof and leaking stoppage technology appears in the market, the anti-smashing brick repairing liquid is adopted, only the gap filler is required to be shoveled, the gap filler is repaired by the invisible repairing liquid, and then the gap is filled again, so that the anti-smashing brick waterproof and leaking stoppage technology is relatively low in cost, simple in process and quick in effect.
At present, the following repair solutions are mainly available in the market:
(1) the main component of the jelly-shaped waterproof material is acrylamide, and the product has the defects of carcinogenic risk, neurotoxicity, poor weather resistance and the like;
(2) the water emulsion type brick-free waterproof material is a coating waterproof type material, and metal ion solution is added into emulsion to break the emulsion into a film. If the coating is damaged and has no self-repairing function, the coating is formed by water volatilization, and the construction is greatly influenced by the temperature and the humidity of the environment;
(3) the inorganic repairing liquid is mainly formed by sodium silicate and other solutions or sol and calcium ions, magnesium ions and the like in the waterproof base surface material to precipitate and then is absorbed on the surface or in gaps, but has the defects of slow water stop permeation, small permeation depth and poor water resistance and durability;
(4) the reactive system of the brick-smashing-free waterproof liquid is mainly prepared by mixing two components of amine curing epoxy, two components of polyurethane, two components of polyurea and the like, and quickly injecting the mixture into a base surface needing plugging, the brick-smashing-free waterproof liquid is more reliable than non-reactive waterproof, but the penetration can be carried out only by adding a solvent to dilute and reduce the viscosity of the two components, the mixing operation of the two components is more troublesome, the mixing proportion is easy, and the situations of small penetration depth due to over-quick curing or incomplete curing or even incapability of curing are caused. Furthermore, both amine and isocyanate compounds are toxic and require complete drying of the base surface for construction, and are not suitable for waterproofing in residential houses.
Therefore, it is desirable to obtain a reactive type anti-smashing brick liquid waterproof liquid which is single-component and ready-to-use when opened, does not contain any organic solvent and volatile low-boiling point diluent, so that the risk of mixing the two components is avoided, and the plugging and water stopping can be quickly and effectively carried out in a residential house without influencing normal life.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a single-component moisture-curing brick-smashing-free plugging waterproof liquid.
In order to achieve the above object, the present invention adopts the following technical solutions:
the invention firstly discloses a waterproof repair liquid (C) of a moisture-curing liquid for preventing brick-breaking and leaking stoppage, which is characterized by comprising the following components in parts by weight:
(1)100 parts by mass of an alkoxysilane-modified polymer (A) having a structure of the formula (I)
P1-[(CR1 2)a-Si(OR2)bR3 (3-b)]c(I)
In formula (I):
-P1represents a c-valent polymer main chain moiety linked via a carbon, nitrogen, oxygen or sulfur atom or comprises a silicon alkoxide- (CR)1 2)a-Si(OR2)bR3 (3-b)A linking group moiety; preferably by carbon, nitrogen or oxygen atoms, more preferably by oxygen or nitrogen atoms,
-R1may be the same or different at each occurrence and represents a hydrogen atom or a monovalent straight or branched chain hydrocarbon group of 1 to 10 carbon atoms or an aromatic substituted alkane of 7 to 15 carbon atoms or an aromatic hydrocarbon group of 6 to 14 carbon atoms; preferably a hydrogen atom or a methyl group, more preferably a hydrogen atom;
-R2may be the same or different at each occurrence and represents a monovalent hydrocarbon moiety of 1 to 4 carbon atoms; preferably methyl or ethyl.
-R3May be the same or different at each occurrence and represents a monovalent hydrocarbon moiety of 1 to 20 carbon atoms; preferably methyl or ethyl.
A, which may be the same or different at each occurrence, is an integer from 1 to 10; preferably an integer of 1 to 4, more preferably 1 or 3;
-b, which may be the same or different at each occurrence, is 1 or 2 or 3; preferably 2 or 3
C.gtoreq.1 means P1Neutralization of- [ (CR)1 2)a-Si(OR2)bR3 (3-b)]The average functionality of the attached groups can be integers or fractions; (ii) a
(2)0.1 to 50 parts of a catalyst (C1) selected from the group consisting of metal-containing catalysts, guanidines and imidazoles and catalysts comprising units of the formula (II) (C2)
BfSi(OR4)dR5 eO(4-f-d-e)/2(II)
In the formula (II):
-B, which may be the same or different at each occurrence, represents a monovalent, Si-C bonded moiety having at least one nitrogen-containing atom not bonded to a carbonyl group (-C (═ O) -);
-R4may be the same or different at each occurrence and represents a hydrogen atom or a monovalent hydrocarbon group of 1 to 4 carbon atoms; preferably a hydrogen atom, a methyl group or an ethyl group.
-R5May be the same or different at each occurrence and represents a monovalent Si-C bonded organic moiety containing no N atoms; preferably a hydrocarbon group of 1 to 16 carbon atoms, more preferably a methyl, ethyl, vinyl, phenyl or alkyl or alkenyl group of 3 to 16 carbon atoms.
-f is 0, 1,2, 3 or 4; is preferably 1
-e is 0, 1,2 or 3; is preferably 1
-d is 1,2 or 3; preferably 2 or 3
-d + e + f.ltoreq.4 and at least one moiety of the group B is present per molecule;
(3)0 to 500 parts by mass of a reactive diluent (D) having the structure of formula (III)
R8-[Si(OR6)gR7 (3-g)]h(III)
In the formula (III):
-R8selected from monovalent or polyvalent hydrocarbon radicals containing from 1 to 40 carbon atoms, in which the carbon chains may be interrupted by oxygen atoms, with the proviso that R8And Si (OR)6)gR7 (3-g)Is connected through a C-Si bond;
-R6may be the same or different at each occurrence and represents a monovalent hydrocarbon moiety of 1 to 4 carbon atoms; preferably methyl or ethyl;
-R7may be the same or different at each occurrence and represents a monovalent hydrocarbon moiety of 1 to 20 carbon atoms; preferably methyl;
-g, which may be the same or different at each occurrence, is 1 or 2 or 3; preferably 2 or 3;
h is an integer greater than 0, meaning R8Middle quilt- [ Si (OR)6)gR7 (3-g)]The number of hydrogen atoms substituted; preferably 1 or 2
(4) Other optional functional components (F):
a)0 to 20 parts of water-removing stabilizer (F1), optionally: vinyltrimethoxysilane, vinyltriethoxysilane, phenyltrimethoxysilane, methyltrimethoxysilane, orthosilicates or their partially hydrolyzed silane coupling agent oligomers; preferably vinyltrimethoxysilane or phenyltrimethoxysilane. The reactive diluent (D) also has the function of a water removal stabilizer when being used as a moisture-curing liquid waterproof repair liquid (C).
b)0 to 300 parts of a crosslinking enhancer (F2), it being possible to choose: the silicon resin is modified by alkoxy silicon base, in particular to methoxy silicon base modified polymethylsilsesquioxane silicon resin, methoxy silicon base modified polyphenylsilsesquioxane silicon resin, ethoxy silicon base modified polymethylsilsesquioxane silicon resin, ethoxy silicon base modified polyphenylsilsesquioxane silicon resin, methoxy silicon base and ethoxy silicon base modified polymethylsilsesquioxane silicon resin, methoxy silicon base and ethoxy silicon base modified polyphenylsilsesquioxane silicon resin and methoxy silicon base and ethoxy silicon base modified polymethylsilsesquioxane-polyphenylsilsesquioxane silicon resin. Preferably having an average number average molecular weight of from 400g/mol to 10000g/mol, more preferably having an average number average molecular weight of from 500g/mol to 3000 g/mol; may be solid or liquid, preferably liquid, at 23 ℃ and 101kPa, having a viscosity of 10 to 100000mPas, more preferably 50 to 50000mPas, especially preferably 100 to 20000 mPas. The silicone resin (F2) used in the present invention is a commercial product or can be prepared by a method commonly used in silicon chemistry.
c)0 to 300 parts of non-reactive plasticizer (F3), and high boiling point liquid compounds such as esters, ethers, hydrocarbons, etc. which do not chemically react with other components can be selected. The general principle of choice of non-reactive plasticizer is that it is neither reactive with water nor reactive with P, C1 and C2 in components (1), (2) at <80 ℃, is liquid at 20 ℃ and 101kPa, has a boiling point >250 ℃ at 101kPa, has good compatibility in moisture curable liquid water repellent repair liquid (C) and after moisture curing cross-linking, and does not precipitate at use temperatures (typically-45 to 80 ℃). Fully esterified aromatic or aliphatic carboxylic acids, fully esterified derivatives of phosphoric acid, fully esterified derivatives of sulfonic acid, branched or unbranched saturated hydrocarbons, polystyrene, polybutadiene, polyisobutylene, polyesters, and polyethers may be selected. The carboxylic acid ester may be selected from phthalic acid esters such as dioctyl phthalate, diisooctyl phthalate, and diundecyl phthalate, perhydrophthalic acid esters such as diisononyl 1, 2-cyclohexanedicarboxylate and dioctyl 1, 2-cyclohexanedicarboxylate; adipates, such as dioctyl adipate; benzoic acid esters; esters, glycol esters of trimellitic acid; esters of saturated alkanediols, such as 2,2, 4-trimethyl-1, 3-pentanediol monoisobutyrate and 2,2, 4-trimethyl-1, 3-pentanediol diisobutyrate. Polyethers having a molar mass of preferably 200 to 20000g/mol of polyethylene glycol, poly-THF, and polypropylene glycol. Preference is given to using plasticizers (D) having a molar mass (or, in the case of polymeric plasticizers, an average molar mass Mn) of at least 200g/mol, more preferably more than 500g/mol, more particularly more than 900 g/mol. They preferably have a molar mass or average molar mass Mn of at most 20000g/mol, more preferably at most 10000g/mol, more particularly not more than 8000 g/mol. More preferably, phthalate-free, environmentally friendly plasticizers are used, such as perhydrogenated phthalates, esters of trimellitic acid, polyesters or polyethers.
d)0 to 50 parts of an adhesion promoter (F4), catalyst C2 of an amine group-containing silane or oligosiloxane, can be used alone as an adhesion promoter or in combination with a silane coupling agent containing other functional groups including: mercapto group, methacrylic acidAn ester group, an urea group, a urethane group, an isocyanate group, an anhydride group, or an epoxy group; specific alternatives are, but not limited to: CH (CH)2(O)CHCH2O(CH2)3Si(OCH3)3、CH2(O)CHCH2O(CH2)3Si(OC2H5)3、CH2(O)CHCH2O(CH2)3Si(OCH3)2(CH3)、CH2(O)CHCH2O(CH2)3Si(OC2H5)2(CH3) 2- (3-triethoxysilylpropyl) maleic anhydride, H2NC(＝O)NH(CH2)3-Si(OCH3)3、H2NC(＝O)NH(CH2)3-Si(OC2H5)3、H2NC(＝O)NH(CH2)3-Si(OCH3)2(CH3)、H2NC(＝O)NH(CH2)3-Si(OC2H5)2(CH3)、H2NC(＝O)NH(CH2)-Si(OCH3)3、H2NC(＝O)NH(CH2)-Si(OC2H5)3、H2NC(＝O)NH(CH2)-Si(OCH3)2(CH3)、H2NC(＝O)NH(CH2)-Si(OC2H5)2(CH3)、H3COC(＝O)NH(CH2)3-Si(OCH3)3、H3COC(＝O)NH(CH2)3-Si(OC2H5)3、H3COC(＝O)NH(CH2)3-Si(OCH3)2(CH3)、H3COC(＝O)NH(CH2)3-Si(OC2H5)2(CH3)、H3COC(＝O)NH(CH2)-Si(OCH3)3、H3COC(＝O)NH(CH2)-Si(OC2H5)3、H3COC(＝O)NH(CH2)-Si(OCH3)2(CH3)、H3COC(＝O)NH(CH2)-Si(OC2H5)2(CH3)、H5C2OC(＝O)NH(CH2)3-Si(OCH3)3、H5C2OC(＝O)NH(CH2)3-Si(OC2H5)3、H5C2OOC(＝O)NH(CH2)3-Si(OCH3)2(CH3)、H5C2OC(＝O)NH(CH2)3-Si(OC2H5)2(CH3)、H5C2OC(＝O)NH(CH2)-Si(OCH3)3、H5C2OC(＝O)NH(CH2)-Si(OC2H5)3、H5C2OC(＝O)NH(CH2)-Si(OCH3)2(CH3)、H5C2OC(＝O)NH(CH2)-Si(OC2H5)2(CH3)、HS(CH2)3Si(OCH3)3、HS(CH2)3Si(OC2H5)3、HS(CH2)3Si(OCH3)2(CH3)、HS(CH2)3Si(OC2H5)2(CH3)、CH2＝C(CH3)C(＝O)O(CH2)3Si(OCH3)3、CH2＝C(CH3)C(＝O)O(CH2)3Si(OC2H5)3、CH2＝C(CH3)C(＝O)O(CH2)3Si(OCH3)2(CH3)、CH2＝C(CH3)C(＝O)O(CH2)3Si(OC2H5)2(CH3)、CH2＝C(CH3)C(＝O)O(CH2)Si(OCH3)3、CH2＝C(CH3)C(＝O)O(CH2)Si(OC2H5)3、CH2＝C(CH3)C(＝O)O(CH2)Si(OCH3)2(CH3)、CH2＝C(CH3)C(＝O)O(CH2)Si(OC2H5)2(CH3)、CH2＝CHC(＝O)O(CH2)3Si(OCH3)3、CH2＝CHC(＝O)O(CH2)3Si(OC2H5)3、CH2＝CHC(＝O)O(CH2)3Si(OCH3)2(CH3)、CH2＝CHC(＝O)O(CH2)3Si(OC2H5)2(CH3)、CH2＝CHC(＝O)O(CH2)Si(OCH3)3、CH2＝CHC(＝O)O(CH2)Si(OC2H5)3、CH2＝CHC(＝O)O(CH2)Si(OCH3)2(CH3)、CH2＝CHC(＝O)O(CH2)Si(OC2H5)2(CH3) And partially hydrolyzed oligomeric or oligomeric oligomers of the above silanes; o ═ C ═ N- (CH)2)3-Si(OCH3)3、O＝C＝N-(CH2)3-Si(OC2H5)3、O＝C＝N-(CH2)3-Si(OCH3)2(CH3)、O＝C＝N-(CH2)3-Si(OC2H5)2(CH3)、O＝C＝N-(CH2)-Si(OCH3)3、O＝C＝N-(CH2)-Si(OC2H5)3、O＝C＝N-(CH2)-Si(OCH3)2(CH3)、O＝C＝N-(CH2)-Si(OC2H5)2(CH3) And trimeric silanes of the above silanes which are obtained by reaction of NCO groups. The composition of the present invention comprises an adhesion promoter, C2 alone or in combination with the above, in an amount of preferably 0.5 to 30 parts by weight, more preferably 1 to 10 parts by weight, based on 100 parts by weight of the polymer (a).
e)0 to 50 parts of other functional auxiliaries (F5), such as antioxidants, UV absorbers, HALS, heat-resistant stabilizers, levelling agents, defoamers, pigments, antibacterial agents, antimildew agents, etc.
Preferably, the polymer moiety P of the alkoxysilane-modified polymer (A)1The water-repellent repair liquid (C) may be of a linear or non-linear structure, and may be adjusted in molecular weight, functionality and structural composition according to the desired properties of the water-repellent repair liquid (C), and has an average number average molecular weight of 200 to 50000g/mol, and is selected from one or a mixture of several kinds derived from a polyoxypropylene ether segment, a tetrahydrofuran homopolyether segment, a polyolefin segment, a polyester segment, a polycarbonate segment, a polyacrylate segment, a homopolymer and a copolymer having a number average molecular weight of 400 to 25000 g/mol. The alkoxysilane-modified polymer (a) may be a commercial product, or may be prepared by a method generally used in chemistry, such as radical reaction, addition reaction including nucleophilic addition, electrophilic addition, hydrosilylation, Michael addition, Diels-Alder addition, ring-opening addition, or the like, or condensation reaction including esterification reaction, amidation reaction, or the like, or reaction between an isocyanate-functional compound and a compound having a group reactive with isocyanate, or the like.
Preferably, the polymeric group P1Polymer chains comprising as their polymer chains: polyoxyalkylenes such as polyoxyethylene, polyoxypropylene, polyoxybutylene, polyoxytetramethylene, polyoxyethylene-polyoxypropylene copolymer, and polyoxypropylene-polyoxybutylene copolymer; hydrocarbon polymers such as polyisobutylene and copolymers of polyisobutylene with isoprene; polychloropentadiene; a polyisoprene; a polyurethane; a polyester; a polyamide; a polyacrylate; polymethacrylates; vinyl polymers, and polycarbonates, and P1Preferably by-O-C (═ O) -NH-, -NH-C (═ O) O-, -NH-C (═ O) -NH-, -NR9-C(＝O)-NH-、NH-C(＝O)-NR9-、-NH-C(＝O)-、-C(＝O)-NH-、-C(＝O)-O-、-O-C(＝O)-、-O-C(＝O)-O-、-S-C(＝O)-NH-、-NH-C(＝O)-S-、-C(＝O)-S-、-S-C(＝O)-、-S-C(＝O)-S-、-C(＝O)-、-S-、-O-、-NR9Bonded to one or more radicals- [ (CR)1 2)a-Si(OR2)bR3 (3-b)]. Wherein R is9May be the same or different and is preferably a radicalAn optionally substituted hydrocarbon having 1 to 20 carbon atoms in the group or-CH (COOR)10)-CH2-COOR10More preferably a linear, branched or cyclic alkyl group having from 1 to 20 carbon atoms or an optionally halogen-substituted aryl group having from 6 to 20 carbon atoms, particularly preferably a cyclohexyl, cyclopentyl, n-propyl, isopropyl, n-, iso-or tert-butyl, the various stereoisomers of a pentyl group, a hexyl or heptyl group, or a phenyl group. R10Preferably an alkyl group having 1 to 10 carbon atoms, more preferably a methyl, ethyl or propyl group.
More preferably, the aforementioned alkoxysilyl-modified polymer (A) may have a functional group in the polymer portion P1Groups- [ (CR) attached in the manner described, at any desired position within, e.g. on the chain and/or at the end1 2)a-Si(OR2)bR3 (3-b)]. Polymer moiety P1Preferably containing polyurethane groups or polyoxyalkylene groups, more preferably having in each case 1 to 3 terminal connecting groups- [ (CR)1 2)a-Si(OR2)bR3 (3-b)]The chain polyurethane group or chain polyoxyalkylene group, i.e., c, of the branch point of (a) is preferably 1 to 3.
The terminal group of the alkoxysilyl-modified polymer (a) used according to the invention is preferably-NH- (C ═ O) -NR9-(CR1 2)a-Si(OR2)bR3 (3-b)，-O-C(＝O)-NH-(CR1 2)a-Si(OR2)bR3 (3-b)or-O- (CR)1 2)a-Si(OR2)bR3 (3-b). Preferably, R in the formula1Is a hydrogen atom, R3Is methyl, R being selected when a ═ 12Is methyl and b ═ 2 or R is selected2Is ethyl and b ═ 3, R2 is selected to be methyl and b ═ 2 or 3 when a ═ 3, or R is selected2Is ethyl and b is 3.
Preferably, the aforementioned alkoxy-modified polymer (a) can be prepared by, but is not limited to, the following published synthetic routes:
(1) the preparation of isocyanatosilanes by direct reaction with hydroxyl-functional polyols can be found in patent documents EP1535940, WO 2006/136261;
(2) the reaction preparation of isocyanatosilanes with hydroxyl-terminated polyurethanes can be described in patents US5990257, CN105085863, CN 105085864;
(3) aminosilanes are prepared by reacting with isocyanate-terminated polyurethane prepolymers, as described in WO 2001/016201;
(4) alkoxysilanes containing Si-H bonds with alkenyl-terminated polyoxyalkylene ethers or polyurethanes.
Alternatively, the alkoxysilyl-based modified polymer (A) of formula (I) can be obtained according to the method described in patent WO 2009/106699. Alternatively, among commercially available alkoxysilyl-based modified polymers (A) of the formula (I), those which are commercially available may be selected
STP-E15 (Wacker chemical commercial product), which is a polyoxypropylene ether containing a trimethoxy silane end-capping, formula (I) wherein R1Is a hydrogen atom, R2A polymer of gamma-type trimethoxy silane terminal of methyl, a-3, b-3, with number average molecular weight of 8000-12000 mol/g and viscosity of 10000 cps; can also choose
STP-E10 (Wacker chemical commercial product), which is a dimethoxy silane terminated polyether, R1Is a hydrogen atom, R2And R3An alpha-dimethoxy silane terminated polymer of methyl group, a-1, b-2, having a number average molecular weight of 8000mol/g to 12000mol/g and a viscosity of 10000 cps.
Alternatively still, the alkoxysilyl-modified polymer (a) may be obtained according to the following method: reacting a polyether polyol with a stoichiometric excess of a diisocyanate to form a polyurethane polyether block having at least two terminal-NCO groups; the polyurethane polyether block having at least two terminal-NCO groups obtained in the previous step is then reacted with a stoichiometric or slight excess of an a, β or γ -aminosilane containing a secondary amine group. For more details of the preparation, reference may be made to patent WO 2013/136108, which is not described in detail herein.
As a preference, the catalyst (C1) used in the composition of the invention may be any desired metal-containing curing catalyst, guanidine and amidine, which have been disclosed hitherto. The metal-containing curing catalyst (C1) used in the present invention is preferably a metal-containing titanium compound and a metal-containing tin compound. Suitable metal-containing catalysts (C1) of the present invention include, but are not limited to, metal-containing titanium compounds such as titanium (IV) bis (ethylacetoacetate) diisopropoxide, tetraisopropyl titanate, tetrabutyl titanate, tetraisobutyl titanate, butyl phosphate, titanium complexes of ethanol and isopropanol, and the like, and mixtures thereof. Commercially available titanium-containing catalysts include, but are not limited to: of DorfKetal
PITA, 726, TPT, 9000, BTM and IAM. Organotin (IV) compounds such as dibutyltin dilaurate, dibutyltin dimaleate, dibutyltin diacetate, dibutyltin dioctoate, dibutyltin acetylacetonate, dibutyltin oxide, dibutyltin diethylhexanoate, dibutyltin distearate, dioctyltin dilaurate, dioctyltin dimaleate, dioctyltin diacetate, dioctyltin dioctanoate, dioctyltin acetylacetonate, dioctyltin oxide, dioctyltin diethylhexanoate, dioctyltin distearate, complexes of ethyl orthosilicate with dioctyltin or dibutyltin, etc.; stannous (II) catalysts such as stannous octoate, stannous naphthenate, and the like. The catalyst (C1) of the invention may be an amidine, such as 1, 5-diazabicyclo [4.3.0 ]]Non-5-ene (DBN) or 1, 8-diazabicyclo [5.4.0]Undec-7-ene (DBU); or guanidines, such as 1, 3-diphenylguanidine, 1, 2-trimethylguanidine, 1,3, 3-tetramethylguanidine, 1,2, 3, 3-pentamethylguanidine, 2-ethyl-1, 1,3, 3-tetramethylguanidine, 2-butyl-1, 1,3, 3-tetramethylguanidine. The catalyst (C1) used in the present invention is preferably a commercial product.
C2 containing units of formula (II) may be an amino-containing silane, i.e. d + e + f ═ 4, or an amino-containing oligosiloxane, i.e. d + e + f ≦ 3, which amino-containing silane or oligosiloxane also acts as an adhesion promoter in the moisture-curing liquid water repellent repair liquid (C). The group B preferably comprises H2N(CH2)3-、H2N(CH2)2NH(CH2)3-and HN (R)3)-(CH2)3-(H3CO)3Si(CH2)3NH(CH2)3-a group. R3Represents a linear or branched monovalent hydrocarbon group having 1 to 10 carbon atoms, or a hydrocarbon group containing an alicyclic ring or a substituent of 3 to 20 carbon atoms as an alicyclic ring, or a monovalent aromatic hydrocarbon group having 6 to 20 carbon atoms or a monovalent hydrocarbon group containing an aromatic group as a substituent, or an alkyl group containing at least one ester energy group, preferably a methyl group, an ethyl group, a propyl group, a butyl group, a cyclohexyl group, a phenyl group, an octyl group or their isomer hydrocarbon groups.
The following examples of amino group-containing siloxanes may be preferred in the present invention, but are not limited thereto: h2N(CH2)3-Si(OCH3)3、H2N(CH2)3-Si(OC2H5)3、H2N(CH2)3-Si(OCH3)2CH3、H2N(CH2)3-Si(OC2H5)2CH3、H2N(CH2)2NH(CH2)3-Si(OCH3)3、H2N(CH2)2NH(CH2)3-Si(OC2H5)3、H2N(CH2)2NH(CH2)3-Si(OCH3)2CH3、H2N(CH2)2NH(CH2)3-Si(OC2H5)2CH3、H2N(CH2)2NH(CH2)2NH(CH2)3-Si(OCH3)3、H2N(CH2)2NH(CH2)2NH(CH2)3-Si(OC2H5)3、H2N(CH2)2NH(CH2)2NH(CH2)3-Si(OCH3)2CH3、H2N(CH2)2NH(CH2)2NH(CH2)3-Si(OC2H5)2CH3、HN(n-C4H9)(CH2)3-Si(OCH3)3、HN(n-C4H9)(CH2)3-Si(OC2H5)3、HN(n-C4H9)(CH2)3Si(OCH3)2CH3、HN(n-C4H9)(CH2)3Si(OC2H5)2CH3HN (Ring-C)6H11)(CH2)3-Si(OCH3)3HN (Ring-C)6H11)(CH2)3-Si(OC2H5)3HN (Ring-C)6H11)(CH2)3-Si(OCH3)2CH3HN (Ring-C)6H11)(CH2)3-Si(OC2H5)2CH3、HN(C6H5)(CH2)3-Si(OCH3)3、HN(C6H5)(CH2)3-Si(OC2H5)3、HN(C6H5)(CH2)3-Si(OCH3)2CH3、HN(C6H5)(CH2)3-Si(OC2H5)2CH3、HN[(CH2)3Si(OCH3)3]2、HN[(CH2)3Si(OC2H5)3]2、HN[(CH2)3Si(OCH3)2CH3]2、HN[(CH2)3Si(OC2H5)2CH3]2、HN(n-C4H9)(CH2)-Si(OCH3)3、HN(n-C4H9)(CH2)-Si(OC2H5)3、HN(n-C4H9)(CH2)Si(OCH3)2CH3、HN(n-C4H9)(CH2)Si(OC2H5)2CH3HN (Ring-C)6H11)(CH2)-Si(OCH3)3HN (Ring-C)6H11)(CH2)-Si(OC2H5)3HN (Ring-C)6H11)(CH2)-Si(OCH3)2CH3HN (Ring-C)6H11)(CH2)-Si(OC2H5)2CH3、HN(C6H5)(CH2)-Si(OCH3)3、HN(C6H5)(CH2)-Si(OC2H5)3、HN(C6H5)(CH2)-Si(OCH3)2CH3、HN(C6H5)(CH2)-Si(OC2H5)2CH3And also their partial hydrolysis to give oligomers or copolymers, are preferably commercially available or obtainable by means of preparations customary in chemistry.
In the formula (I), R1Is a hydrogen atom, R being when a ═ 12Is methyl and b ═ 2 or R2For ethyl and B ═ 3, C2 can be used alone or in combination with C1, when used in combination, the molar ratio of metal groups in the metal catalyst (C1) to groups B in the catalyst (C2) is from 1:400 to 10:1, preferably 1: 200 to 1: 1, more preferably 1: 100 to 1: 10. and, the moisture-curable liquid waterproof repair liquid (C) of the present invention is added with a combination of 0.1 to 50 parts by mass, more preferably 0.5 to 30 parts by mass of a catalyst (C1) and a co-catalyst (C2) based on 100 parts of the alkoxysilane-based modified polymer (a).
Preferably, the reactive diluent (D) is selected from 1 to 40 carbon atomsThe main chain of the alkyl or alkenyl of the molecule or the mixture of one or more of the siloxane oligomers obtained by partial hydrolysis of 1 or 2 hydrogen atoms bonded to carbon atoms in the branched or alicyclic or aromatic hydrocarbon are substituted by trimethoxysilyl, triethoxysilyl, methyldimethoxysilyl or methyldiethoxysilyl. Preferred reactive plasticizers (I) are silanes comprising alkyl chains having 1 to 20 carbon atoms and having groups reactive with compound (a). R8Methyl, ethyl, vinyl, propyl and isomers thereof, butyl and isomers thereof, pentyl and isomers thereof, hexyl and isomers thereof, phenyl, octyl and isomers thereof, dodecyl, tetradecyl trimethoxysilane or triethoxysilane or methyldimethoxysilane may be selected, but are not limited thereto.
Some organic solvents are often added to increase the compatibility of the components, to decrease the viscosity of the system, and to increase the fluidity and permeability. Useful organic solvents are: aromatic hydrocarbons: benzene, toluene, xylene, etc.; ② aliphatic hydrocarbons: pentane, hexane, octane, and the like; ③ alicyclic hydrocarbons: cyclohexane, cyclohexanone, tolucyclohexanone, etc.; (iv) halogenated hydrocarbons: chlorobenzene, dichlorobenzene, dichloromethane, and the like; alcohol: methanol, ethanol, isopropanol, etc.; ethers: ethyl ether, propylene oxide, and the like; seventh, esters: methyl acetate, ethyl acetate, propyl acetate, and the like; the method comprises the following steps: acetone, methyl butanone, methyl isobutyl ketone, and the like; ninthly, a diol derivative: ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, and the like. However, most solvents have toxicity, and the addition of the solvents brings harm to human health and harm to the ecological environment, so that the solvents are particularly not suitable for water prevention and leakage stoppage in houses where people live. The organic solvent is fat soluble, so that it can be quickly absorbed by intact skin except for entering into and out of body via respiratory tract and digestive tract, and after being absorbed into human body, it can act on nerve, blood system, liver and kidney and other viscera rich in lipid substance, and has a certain irritation to skin and mucous membrane. Different organic solvents have different effects on major target organs and different effects, which are determined by the chemical structure, solubility, contact concentration and time of each organic solvent, and sensitivity of the organism.
Further preferably, the moisture-curable liquid waterproof repair liquid (C) of the present invention is preferably free from any organic solvent and low-boiling volatile matter, and when a commercially available raw material component is selected, it is preferably a raw material containing no solvent or only a small amount of solvent, and if a raw material containing a small amount of solvent, it is preferable to first perform a solvent removal operation such as distillation under reduced pressure, azeotropic distillation, molecular sieve adsorption, etc.
Still more preferably, the aforementioned polymer (a), catalyst (C1), catalyst (C2), reactive diluent (D), and other optional functional components (F), may comprise only one structural and functional component or a mixture of different species. The components are mixed in any order to form the single-component pounding-free brick-leaking-stoppage moisture-curing liquid waterproof repair liquid (C) which is isolated from air and water and stored in a sealed manner. The compositions of the present invention may be produced by any of the known methods and mixing techniques for producing moisture-curing compositions. The order in which the various ingredients are mixed with each other can be arbitrarily changed. This mixing can be carried out at room temperature and normal pressure (90 to 110 kPa). Alternatively, the mixing may take place at a higher temperature, if desired, for example a temperature in the range of 30 to 130 ℃. Alternatively, mixing may be carried out temporarily or continuously at reduced pressure (1 to 50kPa) to remove volatile compounds and bubbles. Moreover, the mixing of the present invention preferably occurs in the absence of moisture, with an atmosphere of dry inert gas (e.g., N2, Ar, etc.) being used for the protection.
The process of the invention can be carried out continuously or discontinuously.
The compositions of the present invention are preferably one-part moisture-vapor crosslinkable and curable compositions. Alternatively, the composition of the present invention may be part of a two-component crosslinkable system, wherein part or all of any one or more of the components may be separated out as one component and mixed before use, preferably C1, C2 or C1 and C2 may be separated out partially or completely, or an OH compound (e.g., water) or a component thereof which can stably coexist with an OH-containing compound (e.g., water) in a moisture-curable liquid water-repellent repair liquid (C) may be separated into a second component and mixed before use.
The moisture-curable liquid waterproofing repair liquid of the present invention can be stored without containing water and is crosslinkable upon water injection. The typical moisture content of air is sufficient for cross-linking of the moisture-cure liquid water-repellent healing fluid of the present invention.
The moisture-curable liquid water repellent repair liquid of the present invention is preferably crosslinked at room temperature. If desired, crosslinking can also be carried out at temperatures above or below room temperature, such as at-5 ℃ to 15 ℃ or at 30 ℃ to 50 ℃, and/or by water concentrations above the standard water content of air. The crosslinking is preferably carried out at a pressure of 10 to 110kPa, more particularly at normal pressure, i.e.at about 90 to 110 kPa.
The invention has the advantages that:
(1) the moisture-curing liquid waterproof repair liquid (C) has low viscosity, high fluidity and high reactivity. The plugging agent does not contain any organic solvent and volatile matters with low boiling points, is a plasticizer-free formula containing 100 percent of effective reaction substances, has no substance migration and precipitation after curing, is an environment-friendly, healthy and safe product, and is suitable for plugging and waterproofing operation in houses where people live.
(2) The waterproof part needing treatment or repair can be constructed by injection, brush coating, roller coating, dipping, spraying and other construction means. The waterproof moisture-curing liquid waterproof repair liquid (C) can permeate along water leakage paths such as ceramic tile gaps, pipeline peripheral gaps, brick gaps, concrete cracking gaps, concrete capillary gaps and the like, and the waterproof moisture-curing liquid waterproof repair liquid (C) is subjected to overall hydrolysis crosslinking curing to form an elastomer after meeting water or water vapor in air, fills the gaps, smoothly realizes the waterproof and leakage stoppage without smashing the bricks, and is suitable for the fields of waterproof repair in indoor kitchens and bathrooms, repair of roof waterproof materials and the like.
(3) The hydrolysis-crosslinking-curing speed can be flexibly adjusted according to the formula, the surface drying is fast, the plugging and the waterproofing can be completed in a short time, and the acceleration can be realized by heating and humidifying means.
(4) The epoxy resin is cured through hydrolysis-crosslinking into a-Si-O-Si-bonded structure, and has chain segments with excellent water resistance to jointly form a thermosetting network structure, so that the product has excellent weather resistance, water resistance, heat resistance and durability, and can realize long service life.
(5) The liquid waterproof repair liquid (C) is solidified by moisture or water, so that construction operation can be carried out in kitchens and bathrooms in an incomplete dry environment without influencing the waterproof and leakage-stopping effects.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
In the following examples, all the raw materials are commercially available, and the purchase routes and key indexes are shown in table 1 below:
TABLE 1 purchase route and Key indices for each commercially available raw Material
Example 1
87.0g of S303H, 91.3g of A-171, 260.9g of a solution were added to a 1L four-necked flask (temperature port, nitrogen port to bottom of flask with stirring by bubbling, vacuum/nitrogen outlet, and feed port, respectively)
3074, 187.0g of DINCH, 17.4g of T-13, 8.7g of B-75 and 17.4g of gray slurry, introducing nitrogen, bubbling and stirring uniformly, adding 21.7g of GF93 and 8.7g of Kat41, introducing nitrogen, bubbling and stirring uniformly, vacuumizing for 5 minutes, defoaming and discharging to obtain the non-brick-cracking moisture-curing liquid waterproof repair liquid (C) which is a light gray liquid.
And (3) performance detection:
(1) the viscosity at 25 ℃ was measured by a rotary viscometer (NDJ-5s) to be 500 mPa.s.
(2) 2.0g of a film formed by self-leveling, which had a drying time of 30min at 23 ℃ and 50% relative humidity, were dropped onto the PE film.
(3) A cement mortar base material which meets the requirements of GB/T13477.1-2002 'test method for building sealing materials' part 1 on test base materials is soaked in the moisture-curing liquid waterproof repair liquid (C) of the embodiment for 1min and then taken out, the cement mortar base material is clamped by a clamp and suspended at 23 ℃ and 50% relative humidity for 2h, a part of the test base material is soaked in water, the position clamped by the clamp is above the water surface and does not contact with the water, the cement mortar base material is taken out after being soaked for 4h, the water on the surface is wiped dry, and the water absorption of the cement mortar base material is weighed and calculated. The water absorption was found to be 0.19%.
Example 2
1000.0g of
MSE 100, 25.0g
328 and 25.0g of 770, stirring well, heating to 110 ℃ under vacuum, removing
Small amount of toluene and methanol remained in MSE 100, and 328 and 770 powder can be dissolved, cooled to below 50 deg.C, and 1000.0g of water is added
STP-E10, 1350.0g of 25013VP, 100.0g of GF80, 100.0g of GF 31 and 100.0g of A-171 were stirred uniformly, 300.0g of Z-6020 was added thereto, and the mixture was stirred uniformly and evacuated for 5 minutes to remove bubbles. The obtained moisture-curing liquid waterproof repair liquid (C) for the smashing-free brick plugging is colorless and transparent liquid.
The viscosity at 25 ℃ was measured by a rotary viscometer (NDJ-5s) to be 700 mPa.s.
2.0g of a film formed by self-leveling, which had a drying time of 50min at 23 ℃ and 50% relative humidity, were dropped onto the PE film.
Water absorption was 0.15% according to the water absorption test method in example 1.
Example 3
The same process as in example 1 except that 187.0g of DL-2000D was added in place of 187.0g of DINCH in example 1 and 8.7g of Kat226 was added in place of 8.7g of Kat41 gave the tile-free plugging-free moisture-curing liquid waterproof repair liquid (C) of the present invention as a gray liquid.
The viscosity at 25 ℃ was measured by a rotational viscometer (NDJ-5s) to be 1000 mPa.s.
2.0g of a film formed by self-leveling, which had a drying time of 25min at 23 ℃ and 50% relative humidity, were dropped onto the PE film.
Water absorption was 0.27% as determined by the water absorption test method in example 1.
Example 4
The same procedure as in example 2, except that 250.0g of Z-6020 and 50.0g of
300.0g of Z-6020 in example 2 is replaced by PITA to obtain the pounding-free brick plugging-free moisture-curing liquid waterproof repair liquid (C) which is light amber transparent liquid.
The viscosity at 25 ℃ was measured by a rotational viscometer (NDJ-5s) to be 1000 mPa.s.
2.0g of a film formed by self-leveling, which had a drying time of 10min at 23 ℃ and 50% relative humidity, was dropped onto the PE film.
Water absorption was 0.08% according to the water absorption test method in example 1.
Example 5
674.0g of
STP-E15, 2022.5g of 25013VP, was stirred well, 134.8g of Z-6020 and 33.7g of T-12 were added thereto, stirred well and evacuated for 5 minutes to defoam. The obtained moisture-curing liquid waterproof repair liquid (C) for the smashing-free brick plugging is colorless and transparent liquid.
The viscosity at 25 ℃ was measured by a rotary viscometer (NDJ-5s) to be 400 mPas.
2.0g of a film formed by self-leveling, which had a drying time of 30min at 23 ℃ and 50% relative humidity, were dropped onto the PE film.
Example 6
Mixing 5.7kg of
STP-E10, 3.0kg of SPUR +1050, 13.1kg of 25013VP, 0.9kg of A-171, 8.7kg of
3074, 4.4kg DINCH, 1.3kg GF80, and 0.5kg B75 were sequentially added to a 60L double planetary stirred tank, mixed well, added with 1.8kg Z-6020 and 0.9g TPT, stirred well and evacuated for 5 minutes to defoam. The obtained moisture-curing liquid waterproof repair liquid (C) for the smashing-free brick plugging is colorless and transparent liquid.
The viscosity at 25 ℃ was measured by a rotary viscometer (NDJ-5s) to be 400 mPas.
2.0g of a film formed by self-leveling, which had a drying time of 30min at 23 ℃ and 50% relative humidity, were dropped onto the PE film.
Example 7
This example is a practical application of example 6.
The waterproof repair liquid (C) for the non-cracking and brick-plugging moisture-curable liquid in example 6 was filled in a 500ml hdpe glue injection kettle with a sharp mouth.
The house is used in a house in a certain community of a quiet area in Shanghai city, the house decoration time is more than 5 years, and the facility is old. During decoration, waterproof construction is performed, tiles are pasted and gaps of the tiles are filled with the joint mixture, but after the tiles are aged for a long time, most of the joint mixture falls off, and the problem of water seepage to the downstairs often occurs, and the problem of repairing with the joint mixture is not solved all the time.
The brick smashing-free leaking stoppage waterproof treatment is carried out on the wet-cured liquid waterproof repair liquid (C) in the embodiment 6, and the treatment steps are as follows:
(1) cleaning gaps of the ceramic tiles, removing residues of a gap filling agent and dirt in the gaps of the ceramic tiles by using an art designing knife and a gap cleaning cone, and cleaning dust and sundries by using a dust collector; carefully cleaning the internal corner positions at the periphery of the sewer pipe;
(2) the waterproof repair liquid of the moisture-curing liquid for the brick-smashing-free leaking stoppage in the embodiment 6 is injected for the first time, gaps are filled, gaps around the pipeline and gaps at the internal corners are carefully treated, and windows are opened for ventilation for 1 hour;
(3) the waterproof repair liquid of the moisture-curing liquid for the brick-cracking-free plugging in the embodiment 6 is injected again, the gap is filled, and the curing is carried out for 2 hours;
(4) and (4) carrying out a water test, soaking the water for 24 hours, wherein the water level is not obviously reduced, no water seepage exists below a building, and the plugging is successful. The water is drained from the sewer.
(5) And after the base surface is dried, carrying out ceramic tile gap filling treatment.
After treatment, the house can be normally used without leakage phenomenon, the complicated construction of smashing bricks to waterproof again is avoided, and people can completely repair themselves (DIY) by equipping proper labor protection tools (masks, gloves, goggles and the like) with the moisture-curing liquid waterproof repair liquid without smashing bricks and leaking stoppage. The waterproof repair liquid for the moisture-curing liquid free of brick smashing and leakage blocking does not contain solvents and harmful substances, does not influence normal household life, can complete construction in a short time, and has good durability.
In conclusion, the moisture-curable liquid waterproof repair liquid (C) of the present invention has low viscosity, high fluidity and high reactivity. The plugging agent does not contain any organic solvent and volatile matters with low boiling points, is a plasticizer-free formula containing 100 percent of effective reaction substances, has no substance migration and precipitation after curing, is an environment-friendly, healthy and safe product, and is suitable for plugging and waterproofing operation in houses where people live. Moreover, the hydrolysis-crosslinking-curing speed can be flexibly adjusted according to the formula, the surface drying is fast, the plugging and the waterproofing can be completed in a short time, the acceleration can be realized by means of heating and humidifying, and the product has excellent weather resistance, water resistance, heat resistance and durability and can realize long service life.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.
Claims (10)
1. The waterproof repair liquid (C) for the moisture-curing liquid free of brick smashing and leaking stoppage is characterized by comprising the following components in parts by mass:
(1)100 parts by mass of an alkoxysilane-modified polymer (a) having a structure of the formula (I):
P1-[(CR1 2)a-Si(OR2)bR3 (3-b)]c(I)
(2)0.1 to 50 parts by mass of a catalyst selected from the group consisting of metal-containing catalysts, guanidine and imidazole-containing catalysts (C1), and catalysts comprising an aminosilane or an amino-containing oligosiloxane of the unit of formula (II) (C2);
BfSi(OR4)dR5 eO(4-f-d-e)/2(II)
(3)0 to 500 parts by mass of a reactive diluent (D);
(4) other optional functional components (F), including one or more of the following:
a)0 to 20 parts of water-removing stabilizer (F1),
b)0 to 300 parts of a crosslinking enhancer (F2),
c)0 to 300 parts of a non-reactive plasticizer (F3),
d)0 to 50 parts of an adhesion promoter (F4),
e)0 to 50 parts of other functional auxiliary agents (F5), selected from one or more of antioxidants, UV absorbers, HALS, heat-resistant stabilizers, leveling agents, antifoaming agents, pigments, antibacterial agents and mildewproof agents;
the moisture-curing liquid waterproof repair liquid (C) for the smashing-free brick leakage stoppage is prepared by uniformly mixing the components in any order, and is isolated from air and water and stored in a sealed manner.
2. The brick-smashing-free plugging moisture-curing liquid waterproof repair liquid (C) is characterized by being prepared from the following components in a formula (I):
-P1representing the meridianC-valent polymer moieties bound by carbon, nitrogen, oxygen or sulfur atoms or containing silicon alkoxides- (CR)1 2)a-Si(OR2)bR3 (3-b)A linking group moiety;
-R1which may be the same or different at each occurrence, represents a hydrogen atom or a monovalent straight or branched chain hydrocarbon group of 1 to 10 carbon atoms, or an aromatic substituted alkane of 7 to 15 carbon atoms, or an aromatic hydrocarbon group of 6 to 14 carbon atoms;
-R2may be the same or different at each occurrence and represents a monovalent hydrocarbon moiety of 1 to 4 carbon atoms;
-R3may be the same or different at each occurrence and represents a monovalent hydrocarbon moiety of 1 to 20 carbon atoms;
a, which may be the same or different at each occurrence, is an integer from 1 to 10;
-b, which may be the same or different at each occurrence, is 1 or 2 or 3;
c.gtoreq.1 means P1Neutralization of- [ (CR)1 2)a-Si(OR2)bR3 (3-b)]The average functionality of the groups to which bonding occurs is an integer or a decimal number.
3. The brick-smashing-free plugging moisture-curing liquid waterproof repair liquid (C) as claimed in claim 1, wherein the catalyst is selected from a catalyst (C1) containing metallic titanium or metallic tin and a catalyst (C2) containing aminosilane or amino-containing oligosiloxane of a unit in a formula (II), and the catalyst (C2) can be used alone or in combination with a metal catalyst (C1), and when in combination, the molar ratio of a metal group in the metal catalyst (C1) to a group B in the catalyst (C2) is 1:400 to 10: 1;
in the formula (II):
-B represents a monovalent moiety having at least one nitrogen-containing atom not bonded to a carbonyl group (-C (═ O) -) and bonded with Si — C;
-R4represents a hydrogen atom or is monovalentA hydrocarbyl group of 1 to 4 carbon atoms;
-R5represents a monovalent organic moiety bonded through Si-C that does not contain a N atom;
-f is 0, 1,2, 3 or 4;
-e is 0, 1,2 or 3;
-d is 1,2 or 3;
-d + e + f ≦ 4 and at least one moiety per molecule.
4. The brick-smashing-free plugging moisture-curing liquid waterproof repair liquid (C) as claimed in claim 1, wherein the reactive diluent (D) has a structure of formula (III):
R8-[Si(OR6)gR7 (3-g)]h(III)
in the formula (III):
-R8selected from monovalent or polyvalent hydrocarbon radicals containing from 1 to 40 carbon atoms, in which the carbon chains may be interrupted by oxygen atoms, with the proviso that R8And Si (OR)6)gR7 (3-g)Is connected through a C-Si bond;
-R6may be the same or different at each occurrence and represents a monovalent hydrocarbon moiety of 1 to 4 carbon atoms;
-R7may be the same or different at each occurrence and represents a monovalent hydrocarbon moiety of 1 to 20 carbon atoms;
-g, which may be the same or different at each occurrence, is 1 or 2 or 3;
h is an integer greater than 0, meaning R8Middle quilt- [ Si (OR)6)gR7 (3-g)]The number of hydrogen atoms substituted.
5. The tile-smashing-free plugging moisture-curing liquid waterproof repair liquid (C) according to claim 1, wherein the other optional functional components (F):
a)0 to 20 parts of a water-removing stabilizer (F1) selected from: vinyltrimethoxysilane, vinyltriethoxysilane, phenyltrimethoxysilane, methyltrimethoxysilane, orthosilicates or their partially hydrolyzed silane coupling agent oligomers;
b)0 to 300 parts of a crosslinking enhancer (F2) selected from: alkoxy modified polysilsesquioxane silicone resin, specifically methoxy silicon-based modified polymethylsilsesquioxane silicone resin, methoxy silicon-based modified polyphenylsilsesquioxane silicone resin, ethoxy silicon-based modified polymethylsilsesquioxane silicone resin, ethoxy silicon-based modified polyphenylsilsesquioxane silicone resin, methoxy silicon-based and ethoxy silicon-based modified polymethylsilsesquioxane silicone resin, methoxy silicon-based and ethoxy silicon-based modified polyphenylsilsesquioxane silicone resin, methoxy silicon-based and ethoxy silicon-based modified polymethylsilsesquioxane-polyphenylsilsesquioxane silicone resin;
c)0 to 300 parts of a non-reactive plasticizer (F3) selected from: high boiling point liquid compounds such as esters, ethers, hydrocarbons, etc. which do not chemically react with other components;
d)0 to 50 parts of an adhesion promoter (F4), catalyst C2 of an amine group-containing silane or oligosiloxane, can be used alone as an adhesion promoter or in combination with a silane coupling agent containing other functional groups including: mercapto, methacrylate, ureido, urethane, isocyanate, anhydride, or epoxy groups;
e)0 to 50 parts of other functional auxiliaries (F5), such as antioxidants, UV absorbers, HALS, heat-resistant stabilizers, levelling agents, defoamers, pigments, antibacterial agents or antimildew agents.
6. The tile-smashing-free plugging moisture-curing liquid waterproof repair liquid (C) as claimed in claim 2, wherein the polymer part P of the alkoxysilane modified polymer (A) is P1Is a linear or nonlinear structure, and the molecular weight, the functionality and the structural composition can be adjusted according to the requirements of the performance of the moisture-curing liquid waterproof repair liquid (C), and the number average molecular weight is 200-50000 g/mol.
7. The waterproof repair liquid (C) for moisture-curable liquid free of brick-breaking plugging according to claim 3, wherein in the waterproof composition (C), C2 containing the unit of formula (II) is an amino-containing silane, i.e., d + e + f ═ 4; or an amino group-containing oligosiloxane, i.e. d + e + f.ltoreq.3, which amino group-containing silane or oligosiloxane also acts as an adhesion promoter in the moisture-curing liquid waterproofing composition (C), the molar ratio of the metal catalyst (C1) to the group B in the catalyst (C2) being from 0 to 10: 1.
8. The brick-breaking-free plugging moisture-curing liquid waterproof repair liquid (C) according to claim 1, wherein the reactive diluent (D) is selected from an alkoxy compound formed by substituting 1 or 2 hydrogen atoms bonded with carbon atoms by trimethoxysilyl, triethoxysilyl, methyldimethoxysilyl or methyldiethoxysilyl in a main chain or a branched chain or alicyclic hydrocarbon or aromatic hydrocarbon of alkyl or alkenyl of 1 to 40 carbon atoms or a mixture of one or more siloxane oligomers obtained by partially hydrolyzing the mixture.
9. The tile-smashing-free plugging moisture-curing liquid waterproof repair liquid (C) according to claim 1, wherein the polymer part of the alkoxy silane modified polymer (A) is selected from one or a mixture of more of homopolymer and copolymer with number average molecular weight of 400-25000 g/mol, and the segments are derived from polyoxypropylene ether segments, tetrahydrofuran homopolyether segments, polyester and polycarbonate segments; preferably, the alkoxysilane-modified polymer (A) has alkoxysilyl group- (CR)1 2)a-Si(OR2)bR3 (3-b)In R1Is a hydrogen atom, R3Is methyl, R being selected when a ═ 12Is methyl and b ═ 2 or R is selected2Is ethyl and b ═ 3, R2 is selected to be methyl and b ═ 2 or 3 when a ═ 3, or R is selected2Is ethyl and b is 3.
10. The use of the moisture-curable liquid waterproofing repair liquid (C) for the prevention of leakage from baked bricks as claimed in any one of claims 1 to 9, wherein the moisture-curable liquid waterproofing composition (C) has low viscosity, high fluidity and high reactivity, and is applied to the waterproofing site to be treated or repaired by means of injection, brushing, rolling, dipping or spraying, and the moisture-curable liquid waterproofing composition (C) undergoes hydrolysis and crosslinking as a whole to be cured into an elastomer after encountering water or water vapor in the air, thereby performing the prevention and leakage stoppage of baked bricks, and is used in the field of waterproofing repair in kitchens and bathrooms and repairing of roof waterproofing materials.
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