CN105482763B - A kind of single component mildew-proof root resistance polyurethane building sealant and preparation method thereof - Google Patents

A kind of single component mildew-proof root resistance polyurethane building sealant and preparation method thereof Download PDF

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CN105482763B
CN105482763B CN201511002555.0A CN201511002555A CN105482763B CN 105482763 B CN105482763 B CN 105482763B CN 201511002555 A CN201511002555 A CN 201511002555A CN 105482763 B CN105482763 B CN 105482763B
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root resistance
formula ratio
polyurethane prepolymer
single component
proof
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CN105482763A (en
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詹锋
赵志静
潘生辉
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Guangdong Pustar Sealing Adhesive Co Ltd
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Guangdong Pustar Sealing Adhesive Co Ltd
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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
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C09J175/08—Polyurethanes from polyethers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4804—Two or more polyethers of different physical or chemical nature
    • C08G18/4812—Mixtures of polyetherdiols with polyetherpolyols having at least three hydroxy groups
    • 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
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/346—Clay
    • 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
    • C08K9/12—Adsorbed ingredients, e.g. ingredients on carriers
    • 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
    • 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

Abstract

The present invention relates to fluid sealant technical fields, and in particular to a kind of single component mildew-proof root resistance polyurethane building sealant and preparation method thereof.The single component mildew-proof root resistance polyurethane building sealant includes：Base polyurethane prepolymer for use as, mould inhibitor, chemical root resistance agent, filler, silane adhesion accelerating agent, catalyst and moisture scavenger.Base polyurethane prepolymer for use as includes：Polyoxypropyleneglycol, polypropylene oxide triol, polyisocyanates and plasticizer.The single component mildew-proof root resistance polyurethane building sealant, due to including mould inhibitor and chemical root resistance agent in component simultaneously, so as to make the single component mildew-proof root resistance polyurethane building sealant that there is mould proof and root resistance dual function, especially suitable for the node processing of vegetation roof water proof structure, it can prevent root system of plant from piercing through fluid sealant and additional waterproof layer is caused to fail.The preparation method of the single component mildew-proof root resistance polyurethane building sealant, it is simple with preparation method, and the characteristics of industrialization mass produces can be suitable for.

Description

A kind of single component mildew-proof root resistance polyurethane building sealant and preparation method thereof
Technical field
The present invention relates to fluid sealant technical fields, and in particular to a kind of single component mildew-proof root resistance polyurethane building sealant and Preparation method.
Background technology
With the fast development of national urbanization process, environmental crisis is increasingly serious.It can be effective using Urban roof greening Improve urban air-quality, alleviate urban heat land effect, promote city entirety landscape.Vegetation roof construction will generally set additional Waterproof layer, set additional waterproof layer is mostly based on high molecular material.Since the root system of plant of vegetation roof plantation generally compares Prosperity, puncture ability is strong, easily causes additional waterproof layer and pierces through failure, leads to percolating water phenomenon.Therefore, additional waterproof layer material one As need select have the functional material of root resistance.
The design of vegetation roof water proof structure is related to main water barrier overlap joint and the caulking sealing in gap, need to be largely close using building Sealing is bonded or pointing, and fluid sealant used must assign root resistance performance.Simultaneously as fluid sealant prolonged application is in moist ring Border is easy to failure of going mouldy, it is necessary to have antimildew function.The without hindrance root functionality of fluid sealant of the prior art does not more have both mould proof and resistance The product of root dual function when being constructed for vegetation roof, often occurs piercing through drainage in fluid sealant application site, influences to build Build service life.For this purpose, it is extremely urgent to prepare the building sealant with root resistance and mould proof dual function.
Invention content
It is a kind of with root resistance and mould proof dual function it is an object of the present invention in view of the deficiencies of the prior art, providing Single component mildew-proof root resistance polyurethane building sealant.
The second object of the present invention is in view of the deficiencies of the prior art, to provide a kind of with root resistance and mould proof dual function Single component mildew-proof root resistance polyurethane building sealant preparation method.
One of to achieve these goals, the present invention adopts the following technical scheme that：
A kind of single component mildew-proof root resistance polyurethane building sealant is provided, it includes the component of following weight percent：
Base polyurethane prepolymer for use as 30%~70%
Mould inhibitor 1%~5%
Chemical root resistance agent 1%~7%
Filler 20%~55%
Silane adhesion accelerating agent 1%~3%
Catalyst 0.1%~1%
Moisture scavenger 0.1%~0.5%；
Wherein, the base polyurethane prepolymer for use as includes the component of following weight percent：
Polyoxypropyleneglycol 25%~60%
Polypropylene oxide triol 10%~30%
Polyisocyanates 5%~10%
Plasticizer 20%~50%.
Preferably, a kind of single component mildew-proof root resistance polyurethane building sealant, it includes the component of following weight percent：
Base polyurethane prepolymer for use as 30%~45%
Mould inhibitor 1%~5%
Chemical root resistance agent 1%~7%
Filler 20%~55%
Silane adhesion accelerating agent 1%~3%
Catalyst 0.1%~1%
Moisture scavenger 0.1%~0.5%；
Wherein, the base polyurethane prepolymer for use as includes the component of following weight percent：
Polyoxypropyleneglycol 25%~50%
Polypropylene oxide triol 20%~30%
Polyisocyanates 5%~10%
Plasticizer 20%~40%.
Preferably, a kind of single component mildew-proof root resistance polyurethane building sealant, it includes the component of following weight percent：
Base polyurethane prepolymer for use as 45%~60%
Mould inhibitor 1%~5%
Chemical root resistance agent 1%~7%
Filler 35%~50%
Silane adhesion accelerating agent 1%~3%
Catalyst 0.1%~1%
Moisture scavenger 0.1%~0.5%；
Wherein, the base polyurethane prepolymer for use as includes the component of following weight percent：
Polyoxypropyleneglycol 30%~45%
Polypropylene oxide triol 10%~25%
Polyisocyanates 5%~10%
Plasticizer 25%~35%.
The base polyurethane prepolymer for use as is prepared by following methods：
Step 1 adds in the polypropylene oxide triol of formula ratio and the polyisocyanates of a part equipped with blender, nitrogen In the reaction kettle of gas entrance and thermometer, and polypropylene oxide triol and polyisocyanates is made to be sufficiently mixed under nitrogen protection, Then temperature of reaction kettle is controlled in certain temperature, and polypropylene oxide triol and polyisocyanates is made to react certain time, obtained To the first reaction product；
Step 2 adds in the polyoxypropyleneglycol of formula ratio into the reaction kettle of step 1, continues to keep in step 1 The reaction temperature of reaction kettle makes polyoxypropyleneglycol react certain time with the first reaction product, obtains the second reaction life Into object；
Step 3, the reaction kettle toward step 2 add in remaining polyisocyanates in formula ratio, continue to keep in step 2 The reaction temperature of reaction kettle makes remaining polyisocyanates in formula ratio be reacted after a certain period of time with the second reaction product, obtains To third reaction product；
Step 4 adds in the plasticizer of formula ratio into the reaction kettle of step 3, makes plasticizer and third reaction product It is uniformly mixed to get to base polyurethane prepolymer for use as.
In above-mentioned technical proposal, in the step of prepared by the base polyurethane prepolymer for use as one, temperature of reaction kettle is controlled 80 DEG C ~ 90 DEG C, and polypropylene oxide triol and polyisocyanates is made to react 2h ~ 2.5h, obtain the first reaction product；
In the step of prepared by the base polyurethane prepolymer for use as two, the reaction temperature for continuing to keep reaction kettle is 80 DEG C ~ 90 DEG C, is made Polyoxypropyleneglycol reacts 1.5h ~ 2.5h with the first reaction product, obtains the second reaction product；
In the step of prepared by the base polyurethane prepolymer for use as three, the reaction temperature for continuing to keep reaction kettle is 80 DEG C ~ 90 DEG C, is made After remaining polyisocyanates reacts 2h ~ 3h with the second reaction product in formula ratio, third reaction product is obtained；
In above-mentioned technical proposal, the polyisocyanates of the part in the step of prepared by the base polyurethane prepolymer for use as one and institute The weight ratio for stating remaining polyisocyanates in the formula ratio in the step of prepared by base polyurethane prepolymer for use as three is 70 ~ 90:10~30.
In above-mentioned technical proposal, the content of isocyanates is 0.2%~5% in obtained base polyurethane prepolymer for use as；
Viscosity of the obtained base polyurethane prepolymer for use as at 25 DEG C is 4000mpas~8000mpas.
Wherein, the mould inhibitor is the substance without active H, specially zeolite with carrying silver, silver molecular sieve, load silver activity Charcoal, nano-titanium dioxide, nano zine oxide, isothiazolinone compound, pyrazole compound, thiophenes, nitrogen third The mixture of one or more of pyridine class compound；
The chemistry root resistance agent is chemical root resistance agent B2, chemical root resistance agent B5One or both of mixture；
The filler is PVC paste resin, carbon black, gas-phase silica, precipitated calcium carbonate, powdered whiting, talcum powder, organic The mixture of one or more of bentonite, calcined kaolin powder；
The silane adhesion accelerating agent be the silane without active H, specially γ-glycidyl ether oxygen propyl triethoxy Silane, γ-ureidopropyltriethoxysilane, γ-ureido-propyl trimethoxy silane, γ-methacryloxypropyl three The mixture of one or more of methoxy silane, γ-methacrylamido isopropoxy silane；
The catalyst is stannous octoate, dibutyl tin laurate, tetramethyl butane diamine, triethanolamine, triethylene two The mixture of one or more of amine；
The moisture scavenger is silane coupling agent, trimethyl orthoformate, to sulfonyloxy methyl isocyanates, oxazole alkanes The mixture of one or more of moisture scavenger；
The polyisocyanates for toluene di-isocyanate(TDI), methyl diphenylene diisocyanate, hexamethylene diisocyanate, The mixture of one or more of isophorone diisocyanate, hexamethylene diisocyanate；
The plasticizer is phthalic acid lipid plasticizer, specially dibutyl phthalate, phthalic acid two The mixture of one or more of pungent fat, dinonyl phthalate, didecyl phthalate.
The molecular weight of the polypropylene oxide triol is 1000~5000, and the polyoxypropyleneglycol molecular weight is 2000 ~8000, the polyoxypropyleneglycol molecular weight is more than the molecular weight of the polypropylene oxide triol.
To achieve these goals two, the present invention adopts the following technical scheme that：
A kind of preparation method of single component mildew-proof root resistance polyurethane building sealant is provided, it includes the following steps：
Step 1 adds in the base polyurethane prepolymer for use as of formula ratio in mixer, at a certain temperature, and in certain vacuum item Certain time is stirred under part；
Step 2, then the mould inhibitor of formula ratio and chemical root resistance agent are added in the base polyurethane prepolymer for use as of step 1, and Certain time is stirred to be uniformly mixed, obtains the first mixture；
Step 3 adds in the filler and moisture scavenger of formula ratio into the first mixture made from step 2, and one Certain time is stirred under the conditions of the nitrogen atmosphere of constant temperature degree, to be uniformly mixed, obtains the second mixture；
Step 4, under nitrogen protective condition, the silane that formula ratio is added in into the second mixture made from step 3 glues Accelerating agent and catalyst are connect, and stirs certain time at a certain temperature, to be uniformly mixed, obtains the poly- ammonia of single component mildew-proof root resistance Ester building sealant.
In above-mentioned technical proposal, in the step of prepared by the fluid sealant one, the base polyurethane prepolymer for use as of formula ratio is added in mixed In clutch, at 25 DEG C~40 DEG C, and 10min~20min is stirred under the vacuum condition of 0.08MPa ~ 0.10MPa；
In the step of prepared by the fluid sealant two, then the mould inhibitor of formula ratio and chemical root resistance agent be added to step 1 In base polyurethane prepolymer for use as, and 20min~40min is stirred to be uniformly mixed, obtain the first mixture；
In the step of prepared by the fluid sealant three, added in into first mixture made from step 2 the filler of formula ratio with Moisture scavenger, and 30min~50min is stirred under the conditions of 50 DEG C~70 DEG C of nitrogen atmosphere, to be uniformly mixed, obtain second Mixture；
In the step of prepared by the fluid sealant four, under nitrogen protective condition, into the second mixture made from step 3 The silane adhesion accelerating agent and catalyst of formula ratio are added in, and 1h~1.5h is stirred at 50 DEG C~70 DEG C, to be uniformly mixed, is obtained To single component mildew-proof root resistance polyurethane building sealant.
Compared with prior art, advantageous effect is the present invention：
（1）A kind of single component mildew-proof root resistance polyurethane building sealant provided by the invention, compared with prior art, due to Simultaneously including mould inhibitor and chemical root resistance agent in component, so that obtained single component mildew-proof root resistance polyurethane building sealing Glue has mould proof and root resistance dual function, especially suitable for the node processing of vegetation roof water proof structure, can prevent plant Root system pierces through fluid sealant and additional waterproof layer is caused to fail, and improves engineering waterproofing safety coefficient.
（2）A kind of single component mildew-proof root resistance polyurethane building sealant provided by the invention, due to being added with silicon in component Alkane adhesion promoters, the silane adhesion accelerating agent enable to single component mildew-proof root resistance polyurethane building produced by the present invention to seal The adhesive property of glue and coiled material, concrete substrate etc. is good, is led so as to which root system of plant is further prevented to pierce through fluid sealant Additional waterproof layer is caused to fail, improves engineering waterproofing safety coefficient.
（3）A kind of single component mildew-proof root resistance polyurethane building sealant provided by the invention, due to being added with water in component Divide scavenger, which enables to the water removal of single component mildew-proof root resistance polyurethane building sealant produced by the present invention Effect is good, so that the shelf-life of the single component mildew-proof root resistance polyurethane building sealant is longer.
（4）A kind of single component mildew-proof root resistance polyurethane building sealant provided by the invention, relative to of the prior art Bi-component fluid sealant, single component mildew-proof root resistance polyurethane building sealant produced by the present invention can be when in use without mixing again It closes, has the advantages that easy for construction and production efficiency is high.
（5）A kind of preparation method of single component mildew-proof root resistance polyurethane building sealant provided by the invention has and prepares Method is simple, and can be suitable for the characteristics of industrialization mass produces.
Specific embodiment
In order to which technical problem solved by the invention, technical solution and advantageous effect is more clearly understood, below in conjunction with Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain The present invention is not intended to limit the present invention.
Wherein, the chemical root resistance agent B that the present invention refers to2With chemical root resistance agent B5It is by the bright Sheng of Germany（China）Co., Ltd Production.
Embodiment 1.
A kind of single component mildew-proof root resistance polyurethane building sealant, it includes the component of following weight percent：
Base polyurethane prepolymer for use as 30%~70%
Mould inhibitor 1%~5%
Chemical root resistance agent 1%~7%
Filler 20%~55%
Silane adhesion accelerating agent 1%~3%
Catalyst 0.1%~1%
Moisture scavenger 0.1%~0.5%；
Wherein, the base polyurethane prepolymer for use as includes the component of following weight percent：
Polyoxypropyleneglycol 25%~60%
Polypropylene oxide triol 10%~30%
Polyisocyanates 5%~10%
Plasticizer 20%~50%.
Wherein, mould inhibitor be the substance without active H, specially zeolite with carrying silver, silver molecular sieve, active carbon loading silver, receive Rice titanium dioxide, nano zine oxide, isothiazolinone compound, pyrazole compound, thiophenes, aziridines Close the mixture of one or more of object；
Chemical root resistance agent is chemical root resistance agent B2, chemical root resistance agent B5One or both of mixture；
Filler is PVC paste resin, carbon black, gas-phase silica, precipitated calcium carbonate, powdered whiting, talcum powder, organic swelling The mixture of one or more of soil, calcined kaolin powder；
Silane adhesion accelerating agent be the silane without active H, specially γ-glycidyl ether oxygen propyl triethoxysilicane Alkane, γ-ureidopropyltriethoxysilane, γ-ureido-propyl trimethoxy silane, γ-methacryloxypropyl front three The mixture of one or more of oxysilane, γ-methacrylamido isopropoxy silane；
Catalyst is stannous octoate, in dibutyl tin laurate, tetramethyl butane diamine, triethanolamine, triethylene diamine One or more kinds of mixtures；
Moisture scavenger is silane coupling agent, trimethyl orthoformate, to sulfonyloxy methyl isocyanates, oxazole alkanes moisture The mixture of one or more of scavenger.
Wherein, polyisocyanates is toluene di-isocyanate(TDI), methyl diphenylene diisocyanate, the own diisocyanates of 1,6- The mixture of one or more of ester, isophorone diisocyanate, hexamethylene diisocyanate；
Plasticizer be phthalic acid lipid plasticizer, specially dibutyl phthalate, o-phthalic acid dibutyl ester, The mixture of one or more of dinonyl phthalate, didecyl phthalate.
In the present embodiment, base polyurethane prepolymer for use as is prepared by following methods：
Step 1 adds in the polypropylene oxide triol of formula ratio and the polyisocyanates of a part equipped with blender, nitrogen In the reaction kettle of gas entrance and thermometer, and polypropylene oxide triol and polyisocyanates is made to be sufficiently mixed under nitrogen protection, Then temperature of reaction kettle is controlled at 80 DEG C ~ 90 DEG C, and polypropylene oxide triol and polyisocyanates is made to react 2h ~ 2.5h, obtained To the first reaction product；
Step 2 adds in the polyoxypropyleneglycol of formula ratio, the reaction temperature of reaction kettle into the reaction kettle of step 1 It is 80 DEG C ~ 90 DEG C, polyoxypropyleneglycol is made to react 1.5h ~ 2.5h with the first reaction product, obtains the second reaction product；
Step 3 adds in remaining polyisocyanates in formula ratio, the reaction of the reaction was continued kettle toward the reaction kettle of step 2 Temperature is 80 DEG C ~ 90 DEG C, is made after remaining polyisocyanates reacts 2h ~ 3h with the second reaction product in formula ratio, obtains the Three reaction products；
Step 4 adds in the plasticizer of formula ratio into the reaction kettle of step 3, makes plasticizer and third reaction product It is uniformly mixed to get to base polyurethane prepolymer for use as.
Wherein, remaining polyisocyanates in the formula ratio in the polyisocyanates and step 3 of the part in step 1 Weight ratio be 70 ~ 90:10~30.
Wherein, the content of isocyanates is 0.2%~5% in obtained base polyurethane prepolymer for use as；
Viscosity of the obtained base polyurethane prepolymer for use as at 25 DEG C is 4000mpas~8000mpas.
Wherein, the molecular weight of polypropylene oxide triol is 1000~5000, polyoxypropyleneglycol molecular weight for 2000~ 8000, polyoxypropyleneglycol molecular weight is more than the molecular weight of polypropylene oxide triol.
In the present embodiment, a kind of preparation method of single component mildew-proof root resistance polyurethane building sealant, it includes following step Suddenly：
Step 1 adds in the base polyurethane prepolymer for use as of formula ratio in mixer, at 25 DEG C~40 DEG C, and 0.08MPa ~ 10min~20min is stirred under the vacuum condition of 0.10MPa；
Step 2, then the mould inhibitor of formula ratio and chemical root resistance agent are added in the base polyurethane prepolymer for use as of step 1, and 20min~40min is stirred to be uniformly mixed, obtains the first mixture；
Step 3 adds in the filler and moisture scavenger of formula ratio into the first mixture made from step 2, and 50 DEG C~70 DEG C of nitrogen atmosphere under the conditions of stir 30min~50min, to be uniformly mixed, obtain the second mixture；
Step 4, under nitrogen protective condition, the silane that formula ratio is added in into the second mixture made from step 3 glues Accelerating agent and catalyst are connect, and 1h~1.5h is stirred at 50 DEG C~70 DEG C, to be uniformly mixed, single component mildew-proof root resistance is obtained and gathers Urethane building sealant.
Embodiment 2.
A kind of single component mildew-proof root resistance polyurethane building sealant, it includes the component of following weight percent：
Base polyurethane prepolymer for use as 53%
Silver molecular sieve 2%
Chemical root resistance agent B2 3%
Powdered whiting 13%
PVC paste resin 7%
Precipitated calcium carbonate 20%
γ-glycidoxypropyltrietandysilane andysilane 1.5%
Dibutyl tin laurate 0.2%
To sulfonyloxy methyl isocyanates 0.3%；
Wherein, base polyurethane prepolymer for use as includes the component of following weight percent：
Polyoxypropyleneglycol 33%
Polypropylene oxide triol 14.5%
Methyl diphenylene diisocyanate 5.5%
O-phthalic acid dibutyl ester 47%；
Wherein, the molecular weight of polypropylene oxide triol is 2000, and polyoxypropyleneglycol molecular weight is 6000.
In the present embodiment, base polyurethane prepolymer for use as is prepared by following methods：
Step 1 adds in the polypropylene oxide triol of formula ratio and the polyisocyanates of a part equipped with blender, nitrogen In the reaction kettle of gas entrance and thermometer, and polypropylene oxide triol and polyisocyanates is made to be sufficiently mixed under nitrogen protection, Then temperature of reaction kettle is controlled at 80 DEG C, and polypropylene oxide triol and polyisocyanates is made to react 2h, obtain the first reaction Product；
Step 2 adds in the polyoxypropyleneglycol of formula ratio, the reaction temperature of reaction kettle into the reaction kettle of step 1 It is 80 DEG C, polyoxypropyleneglycol is made to react 2.5h with the first reaction product, obtains the second reaction product；
Step 3 adds in remaining polyisocyanates in formula ratio, the reaction of the reaction was continued kettle toward the reaction kettle of step 2 Temperature is 80 DEG C, is made after remaining polyisocyanates react 2h with the second reaction product in formula ratio, obtains third and react to give birth to Into object；
Step 4 adds in the plasticizer of formula ratio into the reaction kettle of step 3, makes plasticizer and third reaction product It is uniformly mixed to get to base polyurethane prepolymer for use as.
Wherein, remaining polyisocyanates in the formula ratio in the polyisocyanates and step 3 of the part in step 1 Weight ratio be 75:25.
Wherein, the content of isocyanates is 1.24% in obtained base polyurethane prepolymer for use as；
Viscosity of the obtained base polyurethane prepolymer for use as at 25 DEG C is 5000mpas.
In the present embodiment, a kind of preparation method of single component mildew-proof root resistance polyurethane building sealant, it includes following step Suddenly：
Step 1 adds in the base polyurethane prepolymer for use as of formula ratio in mixer, at 25 DEG C, and in the vacuum of 0.09MPa Under the conditions of stir 20min；
Step 2, then the mould inhibitor of formula ratio and chemical root resistance agent are added in the base polyurethane prepolymer for use as of step 1, and 20min is stirred to be uniformly mixed, obtains the first mixture；
Step 3 adds in the filler and moisture scavenger of formula ratio into the first mixture made from step 2, and 50 DEG C nitrogen atmosphere under the conditions of stir 50min, be uniformly mixed, obtain the second mixture；
Step 4, under nitrogen protective condition, the silane that formula ratio is added in into the second mixture made from step 3 glues Accelerating agent and catalyst are connect, and 1.5h is stirred at 50 DEG C, to be uniformly mixed, it is close to obtain single component mildew-proof root resistance polyurethane building Sealing.
Embodiment 3.
A kind of single component mildew-proof root resistance polyurethane building sealant, it includes the component of following weight percent：
Base polyurethane prepolymer for use as 48%
Active carbon loading silver 4.5%
Chemical root resistance agent B5 4%
Powdered whiting 17%
Carbon black 5%
Calcined kaolin powder 19%
γ-ureidopropyltriethoxysilane 1.4%
Stannous octoate 0.8%
To sulfonyloxy methyl isocyanates 0.3%；
Wherein, base polyurethane prepolymer for use as includes the component of following weight percent：
Polyoxypropyleneglycol 35%
Polypropylene oxide triol 24%
Toluene di-isocyanate(TDI) 8.2%
Dioctyl phthalate 12.8%
Dinonyl phthalate 20%；
Wherein, the molecular weight of polypropylene oxide triol is 3000, and polyoxypropyleneglycol molecular weight is 6000.
In the present embodiment, base polyurethane prepolymer for use as is prepared by following methods：
Step 1 adds in the polypropylene oxide triol of formula ratio and the polyisocyanates of a part equipped with blender, nitrogen In the reaction kettle of gas entrance and thermometer, and polypropylene oxide triol and polyisocyanates is made to be sufficiently mixed under nitrogen protection, Then temperature of reaction kettle is controlled at 90 DEG C, and polypropylene oxide triol and polyisocyanates is made to react 2h, obtain the first reaction Product；
Step 2 adds in the polyoxypropyleneglycol of formula ratio, the reaction temperature of reaction kettle into the reaction kettle of step 1 It is 90 DEG C, polyoxypropyleneglycol is made to react 2h with the first reaction product, obtains the second reaction product；
Step 3 adds in remaining polyisocyanates in formula ratio, the reaction of the reaction was continued kettle toward the reaction kettle of step 2 Temperature is 90 DEG C, is made after remaining polyisocyanates reacts 2.5h with the second reaction product in formula ratio, obtains third and reacts Product；
Step 4 adds in the plasticizer of formula ratio into the reaction kettle of step 3, makes plasticizer and third reaction product It is uniformly mixed to get to base polyurethane prepolymer for use as.
Wherein, remaining polyisocyanates in the formula ratio in the polyisocyanates and step 3 of the part in step 1 Weight ratio be 85:15.
Wherein, the content of isocyanates is 1.79% in obtained base polyurethane prepolymer for use as；
Viscosity of the obtained base polyurethane prepolymer for use as at 25 DEG C is 4500mpas.
In the present embodiment, a kind of preparation method of single component mildew-proof root resistance polyurethane building sealant, it includes following step Suddenly：
Step 1 adds in the base polyurethane prepolymer for use as of formula ratio in mixer, at 40 DEG C, and in the vacuum of 0.08MPa Under the conditions of stir 10min~20min；
Step 2, then the mould inhibitor of formula ratio and chemical root resistance agent are added in the base polyurethane prepolymer for use as of step 1, and 40min is stirred to be uniformly mixed, obtains the first mixture；
Step 3 adds in the filler and moisture scavenger of formula ratio into the first mixture made from step 2, and 70 DEG C nitrogen atmosphere under the conditions of stir 30min, be uniformly mixed, obtain the second mixture；
Step 4, under nitrogen protective condition, the silane that formula ratio is added in into the second mixture made from step 3 glues Accelerating agent and catalyst are connect, and 1h is stirred at 70 DEG C, to be uniformly mixed, obtains the sealing of single component mildew-proof root resistance polyurethane building Glue.
Embodiment 4.
A kind of single component mildew-proof root resistance polyurethane building sealant, it includes the component of following weight percent：
Base polyurethane prepolymer for use as 59%
Zeolite with carrying silver 3%
Chemical root resistance agent B2 1%
Chemical root resistance agent B5 3%
Precipitated calcium carbonate 25%
Talcum powder 7%
γ-glycidoxypropyltrietandysilane andysilane 1%
Dibutyl tin laurate 0.6%
Trimethyl orthoformate 0.4%；
Wherein, base polyurethane prepolymer for use as includes the component of following weight percent：
Polyoxypropyleneglycol 33%
Polypropylene oxide triol 14.5%
Hexamethylene diisocyanate 2%
Methyl diphenylene diisocyanate 4.5%
O-phthalic acid dibutyl ester 35%
Didecyl phthalate 11%；
Wherein, the molecular weight of polypropylene oxide triol is 1000, and polyoxypropyleneglycol molecular weight is 2000.
In the present embodiment, base polyurethane prepolymer for use as is prepared by following methods：
Step 1 adds in the polypropylene oxide triol of formula ratio and the polyisocyanates of a part equipped with blender, nitrogen In the reaction kettle of gas entrance and thermometer, and polypropylene oxide triol and polyisocyanates is made to be sufficiently mixed under nitrogen protection, Then temperature of reaction kettle is controlled at 85 DEG C, and polypropylene oxide triol and polyisocyanates is made to react 2.5h, it is anti-to obtain first Answer product；
Step 2 adds in the polyoxypropyleneglycol of formula ratio, the reaction temperature of reaction kettle into the reaction kettle of step 1 It is 85 DEG C, polyoxypropyleneglycol is made to react 2h with the first reaction product, obtains the second reaction product；
Step 3 adds in remaining polyisocyanates in formula ratio, the reaction of the reaction was continued kettle toward the reaction kettle of step 2 Temperature is 85 DEG C, is made after remaining polyisocyanates react 2h with the second reaction product in formula ratio, obtains third and react to give birth to Into object；
Step 4 adds in the plasticizer of formula ratio into the reaction kettle of step 3, makes plasticizer and third reaction product It is uniformly mixed to get to base polyurethane prepolymer for use as.
Wherein, remaining polyisocyanates in the formula ratio in the polyisocyanates and step 3 of the part in step 1 Weight ratio be 80:20.
Wherein, the content of isocyanates is 2.63% in obtained base polyurethane prepolymer for use as；
Viscosity of the obtained base polyurethane prepolymer for use as at 25 DEG C is 5500mpas.
In the present embodiment, a kind of preparation method of single component mildew-proof root resistance polyurethane building sealant, it includes following step Suddenly：
Step 1 adds in the base polyurethane prepolymer for use as of formula ratio in mixer, at 35 DEG C, and in the vacuum of 0.10MPa Under the conditions of stir 15min；
Step 2, then the mould inhibitor of formula ratio and chemical root resistance agent are added in the base polyurethane prepolymer for use as of step 1, and 30min is stirred to be uniformly mixed, obtains the first mixture；
Step 3 adds in the filler and moisture scavenger of formula ratio into the first mixture made from step 2, and 60 DEG C nitrogen atmosphere under the conditions of stir 40min, be uniformly mixed, obtain the second mixture；
Step 4, under nitrogen protective condition, the silane that formula ratio is added in into the second mixture made from step 3 glues Accelerating agent and catalyst are connect, and 1.3h is stirred at 60 DEG C, to be uniformly mixed, it is close to obtain single component mildew-proof root resistance polyurethane building Sealing.
Embodiment 5.
A kind of single component mildew-proof root resistance polyurethane building sealant, it includes the component of following weight percent：
Base polyurethane prepolymer for use as 56%
2-methyl-4-isothiazolin-3-one 0.4%
5- chloro-2-methyls-isothiazoline -3- ketone 1.2%
Chemical root resistance agent B2 2%
Chemical root resistance agent B5 2%
Carbon black 8%
Precipitated calcium carbonate 16.4%
Organobentonite 12%
γ-methacryloxypropyl trimethoxy silane 1.3%
Dibutyl tin laurate 0.2%
Triethylene diamine 0.3%
To sulfonyloxy methyl isocyanates 0.2%；
Wherein, base polyurethane prepolymer for use as includes the component of following weight percent：
Polyoxypropyleneglycol 30%
Polypropylene oxide triol 16.5%
Methyl diphenylene diisocyanate 4.3%
Toluene di-isocyanate(TDI) 3.2%
Phthalic acid didecyl fat 46%；
Wherein, the molecular weight of polypropylene oxide triol is 5000, and polyoxypropyleneglycol molecular weight is 8000.
In the present embodiment, base polyurethane prepolymer for use as is prepared by following methods：
Step 1 adds in the polypropylene oxide triol of formula ratio and the polyisocyanates of a part equipped with blender, nitrogen In the reaction kettle of gas entrance and thermometer, and polypropylene oxide triol and polyisocyanates is made to be sufficiently mixed under nitrogen protection, Then temperature of reaction kettle is controlled at 80 DEG C, and polypropylene oxide triol and polyisocyanates is made to react 2.5h, it is anti-to obtain first Answer product；
Step 2 adds in the polyoxypropyleneglycol of formula ratio, the reaction temperature of reaction kettle into the reaction kettle of step 1 It is 80 DEG C, polyoxypropyleneglycol is made to react 1.5h with the first reaction product, obtains the second reaction product；
Step 3 adds in remaining polyisocyanates in formula ratio, the reaction of the reaction was continued kettle toward the reaction kettle of step 2 Temperature is 80 DEG C, is made after remaining polyisocyanates react 3h with the second reaction product in formula ratio, obtains third and react to give birth to Into object；
Step 4 adds in the plasticizer of formula ratio into the reaction kettle of step 3, makes plasticizer and third reaction product It is uniformly mixed to get to base polyurethane prepolymer for use as.
Wherein, remaining polyisocyanates in the formula ratio in the polyisocyanates and step 3 of the part in step 1 Weight ratio be 90:10.
Wherein, the content of isocyanates is 2.84% in obtained base polyurethane prepolymer for use as；
Viscosity of the obtained base polyurethane prepolymer for use as at 25 DEG C is 6500mpas.
In the present embodiment, a kind of preparation method of single component mildew-proof root resistance polyurethane building sealant, it includes following step Suddenly：
Step 1 adds in the base polyurethane prepolymer for use as of formula ratio in mixer, at 30 DEG C, and in the vacuum of 0.095MPa Under the conditions of stir 13min；
Step 3 adds in the filler and moisture scavenger of formula ratio into the first mixture made from step 2, and 55 DEG C nitrogen atmosphere under the conditions of stir 45min, be uniformly mixed, obtain the second mixture；
Step 4, under nitrogen protective condition, the silane that formula ratio is added in into the second mixture made from step 3 glues Accelerating agent and catalyst are connect, and 1.1h is stirred at 65 DEG C, to be uniformly mixed, it is close to obtain single component mildew-proof root resistance polyurethane building Sealing.
Embodiment 6.
A kind of single component mildew-proof root resistance polyurethane building sealant, it includes the component of following weight percent：
Base polyurethane prepolymer for use as 45%
Three（2- methylaziridines）Phosphorous oxide 2.4%
Nano zine oxide 2%
Chemical root resistance agent B2 2.5%
Chemical root resistance agent B5 1.2%
Gas-phase silica 7%
Precipitated calcium carbonate 22%
Organobentonite 15%
γ-methacrylamido isopropoxy silane 1.8%
Stannous octoate 0.3%
Tetramethyl butane diamine 0.4%
Triethoxy vinyl ethers 0.4%；
Wherein, base polyurethane prepolymer for use as includes the component of following weight percent：
Polyoxypropyleneglycol 42%
Polypropylene oxide triol 16%
Isophorone diisocyanate 5.4%
Toluene di-isocyanate(TDI) 3.2%
Dibutyl phthalate (DBP) 15%
Phthalic acid didecyl fat 18.4%；
Wherein, the molecular weight of polypropylene oxide triol is 6000, and polyoxypropyleneglycol molecular weight is 8000.
In the present embodiment, base polyurethane prepolymer for use as is prepared by following methods：
Step 1 adds in the polypropylene oxide triol of formula ratio and the polyisocyanates of a part equipped with blender, nitrogen In the reaction kettle of gas entrance and thermometer, and polypropylene oxide triol and polyisocyanates is made to be sufficiently mixed under nitrogen protection, Then temperature of reaction kettle is controlled at 88 DEG C, and polypropylene oxide triol and polyisocyanates is made to react 2.2h, it is anti-to obtain first Answer product；
Step 2 adds in the polyoxypropyleneglycol of formula ratio, the reaction temperature of reaction kettle into the reaction kettle of step 1 It is 85 DEG C, polyoxypropyleneglycol is made to react 1.5h with the first reaction product, obtains the second reaction product；
Step 3 adds in remaining polyisocyanates in formula ratio, the reaction of the reaction was continued kettle toward the reaction kettle of step 2 Temperature is 88 DEG C, is made after remaining polyisocyanates reacts 2.5h with the second reaction product in formula ratio, obtains third and reacts Product；
Step 4 adds in the plasticizer of formula ratio into the reaction kettle of step 3, makes plasticizer and third reaction product It is uniformly mixed to get to base polyurethane prepolymer for use as.
Wherein, remaining polyisocyanates in the formula ratio in the polyisocyanates and step 3 of the part in step 1 Weight ratio be 75:25.
Wherein, the content of isocyanates is 3.17% in obtained base polyurethane prepolymer for use as；
Viscosity of the obtained base polyurethane prepolymer for use as at 25 DEG C is 5000mpas.
In the present embodiment, a kind of preparation method of single component mildew-proof root resistance polyurethane building sealant, it includes following step Suddenly：
Step 1 adds in the base polyurethane prepolymer for use as of formula ratio in mixer, at 30 DEG C, and in the vacuum of 0.09MPa Under the conditions of stir 17min；
Step 3 adds in the filler and moisture scavenger of formula ratio into the first mixture made from step 2, and 55 DEG C nitrogen atmosphere under the conditions of stir 35min, be uniformly mixed, obtain the second mixture；
Step 4, under nitrogen protective condition, the silane that formula ratio is added in into the second mixture made from step 3 glues Accelerating agent and catalyst are connect, and 1.2h is stirred at 60 DEG C, to be uniformly mixed, it is close to obtain single component mildew-proof root resistance polyurethane building Sealing.
Embodiment 7.
A kind of single component mildew-proof root resistance polyurethane building sealant, it includes the component of following weight percent：
Base polyurethane prepolymer for use as 52%
α-terthienyl 3.2%
Nano-titanium dioxide 1.6%
Chemical root resistance agent B2 2%
Chemical root resistance agent B5 1.8%
Gas-phase silica 5%
Precipitated calcium carbonate 18%
Powdered whiting 14%
γ-methacryloxypropyl trimethoxy silane 0.8%
γ-ureidopropyltriethoxysilane 0.6%
Dibutyl tin laurate 0.3%
Triethanolamine 0.5%
3- Ethyl-2-Methyls -2- (3- methyl butyls) -1,3- oxazolidines 0.2%；
Wherein, base polyurethane prepolymer for use as includes the component of following weight percent：
Polyoxypropyleneglycol 40.5%
Polypropylene oxide triol 22%
Methyl diphenylene diisocyanate 4.7%
Hexamethylene diisocyanate 2.8%
Dioctyl phthalate 12%
Phthalic acid didecyl fat 18%；
Wherein, the molecular weight of polypropylene oxide triol is 3000, and polyoxypropyleneglycol molecular weight is 6000.
In the present embodiment, base polyurethane prepolymer for use as is prepared by following methods：
Step 1 adds in the polypropylene oxide triol of formula ratio and the polyisocyanates of a part equipped with blender, nitrogen In the reaction kettle of gas entrance and thermometer, and polypropylene oxide triol and polyisocyanates is made to be sufficiently mixed under nitrogen protection, Then temperature of reaction kettle is controlled at 86 DEG C, and polypropylene oxide triol and polyisocyanates is made to react 2.1h, it is anti-to obtain first Answer product；
Step 2 adds in the polyoxypropyleneglycol of formula ratio, the reaction temperature of reaction kettle into the reaction kettle of step 1 It is 86 DEG C, polyoxypropyleneglycol is made to react 1.3h with the first reaction product, obtains the second reaction product；
Step 3 adds in remaining polyisocyanates in formula ratio, the reaction of the reaction was continued kettle toward the reaction kettle of step 2 Temperature is 86 DEG C, is made after remaining polyisocyanates reacts 2.4h with the second reaction product in formula ratio, obtains third and reacts Product；
Step 4 adds in the plasticizer of formula ratio into the reaction kettle of step 3, makes plasticizer and third reaction product It is uniformly mixed to get to base polyurethane prepolymer for use as.
Wherein, remaining polyisocyanates in the formula ratio in the polyisocyanates and step 3 of the part in step 1 Weight ratio be 85:15.
Wherein, the content of isocyanates is 3.16% in obtained base polyurethane prepolymer for use as；
Viscosity of the obtained base polyurethane prepolymer for use as at 25 DEG C is 5500mpas.
In the present embodiment, a kind of preparation method of single component mildew-proof root resistance polyurethane building sealant, it includes following step Suddenly：
Step 1 adds in the base polyurethane prepolymer for use as of formula ratio in mixer, at 30 DEG C, and in the vacuum of 0.08MPa Under the conditions of stir 12min；
Step 3 adds in the filler and moisture scavenger of formula ratio into the first mixture made from step 2, and 65 DEG C nitrogen atmosphere under the conditions of stir 40min, be uniformly mixed, obtain the second mixture；
Step 4, under nitrogen protective condition, the silane that formula ratio is added in into the second mixture made from step 3 glues Accelerating agent and catalyst are connect, and 1.5h is stirred at 68 DEG C, to be uniformly mixed, it is close to obtain single component mildew-proof root resistance polyurethane building Sealing.
Embodiment 8.
A kind of single component mildew-proof root resistance polyurethane building sealant, it includes the component of following weight percent：
Base polyurethane prepolymer for use as 51%
Pyraclostrobin 1.8%
Nano zine oxide 2.5%
Chemical root resistance agent B2 1.2%
Chemical root resistance agent B5 3.8%
Carbon black 7.4%
Precipitated calcium carbonate 20%
Calcined kaolin powder 10%
γ-ureido-propyl trimethoxy silane 0.8%
γ-methacryloxypropyl trimethoxy silane 0.4%
Dibutyl tin laurate 0.2%
Triethanolamine 0.5%
To sulfonyloxy methyl isocyanates 0.4%；
Wherein, base polyurethane prepolymer for use as includes the component of following weight percent：
Polyoxypropyleneglycol 36%
Polypropylene oxide triol 20%
Hexamethylene diisocyanate 2.3%
Toluene di-isocyanate(TDI) 4%
O-phthalic acid dibutyl ester 37.7%；
Wherein, the molecular weight of polypropylene oxide triol is 4000, and polyoxypropyleneglycol molecular weight is 7000.
In the present embodiment, base polyurethane prepolymer for use as is prepared by following methods：
Step 1 adds in the polypropylene oxide triol of formula ratio and the polyisocyanates of a part equipped with blender, nitrogen In the reaction kettle of gas entrance and thermometer, and polypropylene oxide triol and polyisocyanates is made to be sufficiently mixed under nitrogen protection, Then temperature of reaction kettle is controlled at 82 DEG C, and polypropylene oxide triol and polyisocyanates is made to react 2h, obtain the first reaction Product；
Step 2 adds in the polyoxypropyleneglycol of formula ratio, the reaction temperature of reaction kettle into the reaction kettle of step 1 It is 82 DEG C, polyoxypropyleneglycol is made to react 1.8h with the first reaction product, obtains the second reaction product；
Step 3 adds in remaining polyisocyanates in formula ratio, the reaction of the reaction was continued kettle toward the reaction kettle of step 2 Temperature is 85 DEG C, is made after remaining polyisocyanates reacts 2.4h with the second reaction product in formula ratio, obtains third and reacts Product；
Step 4 adds in the plasticizer of formula ratio into the reaction kettle of step 3, makes plasticizer and third reaction product It is uniformly mixed to get to base polyurethane prepolymer for use as.
Wherein, remaining polyisocyanates in the formula ratio in the polyisocyanates and step 3 of the part in step 1 Weight ratio be 78:22.
Wherein, the content of isocyanates is 2.47% in obtained base polyurethane prepolymer for use as；
Viscosity of the obtained base polyurethane prepolymer for use as at 25 DEG C is 7000mpas.
In the present embodiment, a kind of preparation method of single component mildew-proof root resistance polyurethane building sealant, it includes following step Suddenly：
Step 1 adds in the base polyurethane prepolymer for use as of formula ratio in mixer, at 40 DEG C, and in the vacuum of 0.09MPa Under the conditions of stir 12min；
Step 3 adds in the filler and moisture scavenger of formula ratio into the first mixture made from step 2, and 58 DEG C nitrogen atmosphere under the conditions of stir 40min, be uniformly mixed, obtain the second mixture；
Step 4, under nitrogen protective condition, the silane that formula ratio is added in into the second mixture made from step 3 glues Accelerating agent and catalyst are connect, and 1.4h is stirred at 68 DEG C, to be uniformly mixed, it is close to obtain single component mildew-proof root resistance polyurethane building Sealing.
Performance test：
The performance such as table 1 of single component mildew-proof root resistance polyurethane building sealant obtained by above-described embodiment 2 to embodiment 8 It is shown.
The performance table of single component mildew-proof root resistance polyurethane building sealant obtained by 1 embodiment 2 to embodiment 8 of table
By the performance test data of table 1 it is found that the single component mildew-proof root resistance polyurethane building sealant has preferable draw Intensity and elongation at break are stretched, in addition, the mould proof grade of the single component mildew-proof root resistance polyurethane building sealant is high, resistance to is worn It is good to pierce performance.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than the present invention is protected The limitation of range is protected, although being explained in detail with reference to preferred embodiment to the present invention, those of ordinary skill in the art should Work as understanding, technical scheme of the present invention can be modified or replaced equivalently, without departing from the reality of technical solution of the present invention Matter and range.

Claims (9)

1. a kind of single component mildew-proof root resistance polyurethane building sealant, it is characterised in that：It includes the group of following weight percent Part：
Wherein, the base polyurethane prepolymer for use as includes the component of following weight percent：
The base polyurethane prepolymer for use as is prepared by following methods：
The polypropylene oxide triol of formula ratio and the polyisocyanates of a part are added in enter equipped with blender, nitrogen by step 1 In the reaction kettle of mouth and thermometer, and polypropylene oxide triol and polyisocyanates is made to be sufficiently mixed under nitrogen protection, then Temperature of reaction kettle is controlled in certain temperature, and polypropylene oxide triol and polyisocyanates is made to react certain time, obtains the One reaction product；
Step 2 adds in the polyoxypropyleneglycol of formula ratio into the reaction kettle of step 1, continues to keep to react in step 1 The reaction temperature of kettle makes polyoxypropyleneglycol react certain time with the first reaction product, obtains the second reaction product；
Step 3, the reaction kettle toward step 2 add in remaining polyisocyanates in formula ratio, continue to keep to react in step 2 The reaction temperature of kettle makes remaining polyisocyanates in formula ratio be reacted after a certain period of time with the second reaction product, obtains Three reaction products；
Step 4 adds in the plasticizer of formula ratio into the reaction kettle of step 3, plasticizer is made to be mixed with third reaction product Uniformly to get to base polyurethane prepolymer for use as.
2. a kind of single component mildew-proof root resistance polyurethane building sealant according to claim 1, it is characterised in that：It includes The component of following weight percent：
Wherein, the base polyurethane prepolymer for use as includes the component of following weight percent：
3. a kind of single component mildew-proof root resistance polyurethane building sealant according to claim 1, it is characterised in that：It includes The component of following weight percent：
Wherein, the base polyurethane prepolymer for use as includes the component of following weight percent：
4. a kind of single component mildew-proof root resistance polyurethane building sealant according to claim 1, it is characterised in that：It is described poly- In the step of prepared by urethane performed polymer one, temperature of reaction kettle is controlled at 80 DEG C~90 DEG C, and makes polypropylene oxide triol and polyisocyanate Polyisocyanate reactant 2h~2.5h obtains the first reaction product；
In the step of prepared by the base polyurethane prepolymer for use as two, the reaction temperature for continuing to keep reaction kettle is 80 DEG C~90 DEG C, makes to gather Propylene oxide glycol reacts 1.5h~2.5h with the first reaction product, obtains the second reaction product；
In the step of prepared by the base polyurethane prepolymer for use as three, the reaction temperature for continuing to keep reaction kettle is 80 DEG C~90 DEG C, makes to match After remaining polyisocyanates reacts 2h~3h with the second reaction product in side's amount, third reaction product is obtained；
The polyisocyanates of a part in the step of prepared by the base polyurethane prepolymer for use as one is prepared with the base polyurethane prepolymer for use as The step of three in formula ratio in remaining polyisocyanates weight ratio be 70~90:10~30.
5. a kind of single component mildew-proof root resistance polyurethane building sealant according to claim 1, it is characterised in that：It is obtained Base polyurethane prepolymer for use as in isocyanates content be 0.2%~5%；
Viscosity of the obtained base polyurethane prepolymer for use as at 25 DEG C is 4000mpas~8000mpas.
6. a kind of single component mildew-proof root resistance polyurethane building sealant according to claim 1, it is characterised in that：It is described anti- Mould dose is zeolite with carrying silver, silver molecular sieve, active carbon loading silver, nano-titanium dioxide, nano zine oxide, isothiazolinone chemical combination The mixture of one or more of object, pyrazole compound, thiophenes, aziridines compound；
The chemistry root resistance agent is chemical root resistance agent B2, chemical root resistance agent B5One or both of mixture；
The filler is PVC paste resin, carbon black, gas-phase silica, precipitated calcium carbonate, powdered whiting, talcum powder, organic swelling The mixture of one or more of soil, calcined kaolin powder；
The silane adhesion accelerating agent is γ-glycidoxypropyltrietandysilane andysilane, γ-ureido-propyl triethoxysilicane Alkane, γ-ureido-propyl trimethoxy silane, γ-methacryloxypropyl trimethoxy silane, γ-methacryl ammonia The mixture of one or more of base isopropoxy silane；
The catalyst is stannous octoate, in dibutyl tin laurate, tetramethyl butane diamine, triethanolamine, triethylene diamine One or more kinds of mixtures；
The moisture scavenger is silane coupling agent, trimethyl orthoformate, to sulfonyloxy methyl isocyanates, oxazole alkanes moisture The mixture of one or more of scavenger；
The polyisocyanates is toluene di-isocyanate(TDI), methyl diphenylene diisocyanate, hexamethylene diisocyanate, different Buddhist The mixture of one or more of your ketone diisocyanate, hexamethylene diisocyanate；
The plasticizer is dibutyl phthalate, o-phthalic acid dibutyl ester, dinonyl phthalate, phthalic acid The mixture of one or more of didecyl.
7. a kind of single component mildew-proof root resistance polyurethane building sealant according to claim 1, it is characterised in that：It is described poly- The molecular weight of propylene oxide triol is 1000~5000, and the polyoxypropyleneglycol molecular weight is 2000~8000, described poly- Propylene oxide glycol molecular weight is more than the molecular weight of the polypropylene oxide triol.
8. a kind of preparation method of single component mildew-proof root resistance polyurethane building sealant described in claim 1 to 7 any one, It is characterized in that：It includes the following steps：
Step 1 adds in the base polyurethane prepolymer for use as of formula ratio in mixer, at a certain temperature, and under the conditions of certain vacuum Stir certain time；
Step 2, then the mould inhibitor of formula ratio and chemical root resistance agent are added in the base polyurethane prepolymer for use as of step 1, and stir Certain time to be uniformly mixed, obtains the first mixture；
Step 3 adds in the filler and moisture scavenger of formula ratio into the first mixture made from step 2, and in a constant temperature Certain time is stirred under the conditions of the nitrogen atmosphere of degree, to be uniformly mixed, obtains the second mixture；
Step 4, under nitrogen protective condition, the silane adhesion that formula ratio is added in into the second mixture made from step 3 promotees Into agent and catalyst, and certain time is stirred at a certain temperature, to be uniformly mixed, obtain single component mildew-proof root resistance polyurethane and build Build fluid sealant.
9. a kind of preparation method of single component mildew-proof root resistance polyurethane building sealant according to claim 8, feature It is：In the step of prepared by the fluid sealant one, the base polyurethane prepolymer for use as of formula ratio is added in mixer, at 25 DEG C~40 DEG C Under, and 10min~20min is stirred under the vacuum condition of 0.08MPa~0.10MPa；
In the step of prepared by the fluid sealant two, then the mould inhibitor of formula ratio and chemical root resistance agent are added to the poly- ammonia of step 1 In ester performed polymer, and 20min~40min is stirred to be uniformly mixed, obtain the first mixture；
In the step of prepared by the fluid sealant three, the filler and moisture of formula ratio are added in into the first mixture made from step 2 Scavenger, and 30min~50min is stirred under the conditions of 50 DEG C~70 DEG C of nitrogen atmosphere, to be uniformly mixed, obtain the second mixing Object；
In the step of prepared by the fluid sealant four, under nitrogen protective condition, added in into the second mixture made from step 3 The silane adhesion accelerating agent and catalyst of formula ratio, and 1h~1.5h is stirred at 50 DEG C~70 DEG C, to be uniformly mixed, obtain list The mould proof root resistance polyurethane building sealant of component.
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CN106397714B (en) * 2016-08-30 2019-01-15 华南理工大学 A kind of preparation method of anti-mildew base polyurethane prepolymer for use as
CN106543954A (en) * 2016-10-28 2017-03-29 天长市永泰密封材料有限公司 Net taste polyurethane building sealant of a kind of indoor decoration antibacterial and deodouring and preparation method thereof
CN106543953A (en) * 2016-10-28 2017-03-29 天长市永泰密封材料有限公司 A kind of fire protection flame retarding polyurethane building sealant and preparation method thereof
CN106543952A (en) * 2016-10-28 2017-03-29 天长市永泰密封材料有限公司 A kind of low temperature resistant outer wall stone joint filling polyurethane building sealant and preparation method thereof
CN106543950A (en) * 2016-10-28 2017-03-29 天长市永泰密封材料有限公司 Heat-insulated polyurethane building sealant of a kind of outer wall thermal insulation and preparation method thereof
CN106543951A (en) * 2016-10-28 2017-03-29 天长市永泰密封材料有限公司 A kind of Floor Covering high abrasion polyurethane building sealant and preparation method thereof
CN110499096B (en) * 2019-08-02 2021-01-05 江苏凯伦建材股份有限公司 Single-component root-puncture-resistant waterproof coating and preparation method thereof
CN112094616A (en) * 2020-09-24 2020-12-18 杭州之江新材料有限公司 High-thixotropy and fast-curing single-component low-modulus polyurethane sealant and preparation method thereof

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CN101935509A (en) * 2010-09-30 2011-01-05 北京立高科技股份有限公司 Plant root puncture-resistant adhesive and preparation method thereof
CN104877542A (en) * 2015-06-16 2015-09-02 北京东方雨虹防水技术股份有限公司 Mono-component PU (Polyurethane) root-resistant waterproof paint and preparation method thereof

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CN101402845A (en) * 2008-11-11 2009-04-08 北京市化学工业研究院 Process for producing flame-proof fluid sealant for construction
CN101935509A (en) * 2010-09-30 2011-01-05 北京立高科技股份有限公司 Plant root puncture-resistant adhesive and preparation method thereof
CN104877542A (en) * 2015-06-16 2015-09-02 北京东方雨虹防水技术股份有限公司 Mono-component PU (Polyurethane) root-resistant waterproof paint and preparation method thereof

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