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CN106554672A - Modified polyvinylalcohol water-repellent paint and preparation method thereof - Google Patents

Modified polyvinylalcohol water-repellent paint and preparation method thereof Download PDF

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Publication number
CN106554672A
CN106554672A CN201611094583.4A CN201611094583A CN106554672A CN 106554672 A CN106554672 A CN 106554672A CN 201611094583 A CN201611094583 A CN 201611094583A CN 106554672 A CN106554672 A CN 106554672A
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CN
China
Prior art keywords
water
polyvinyl alcohol
repellent paint
modified polyvinylalcohol
consisted
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CN201611094583.4A
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Chinese (zh)
Inventor
樊岁新
邹敏
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Panzhihua University
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Panzhihua University
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Priority to CN201611094583.4A priority Critical patent/CN106554672A/en
Publication of CN106554672A publication Critical patent/CN106554672A/en
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D129/00Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
    • C09D129/02Homopolymers or copolymers of unsaturated alcohols
    • C09D129/04Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/61Additives non-macromolecular inorganic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/63Additives non-macromolecular organic
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/014Additives containing two or more different additives of the same subgroup in C08K

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

The invention belongs to have Waterproof Material Field, specifically related to a kind of modified polyvinylalcohol water-repellent paint and preparation method thereof.Lack the problem of the high water-repellent paint of good film-forming property, good-extensibility, cost performance for existing waterproof product market, the present invention provides a kind of modified polyvinylalcohol water-repellent paint and preparation method thereof.The coating is consisted of:Polyvinyl alcohol modification emulsion 70~80%, colours water-proofing agent 20~30%;The polyvinyl alcohol modification emulsion is consisted of:Base material 80~95%, the mixed liquor 5~20% of ethylene glycol, dibutyl phthalate and Polyethylene Glycol;The base material is consisted of:2699 polyvinyl alcohol 6.5~8%, antifreeze 2.42~3%, catalyst 0.14~0.2%, modifying agent 3.3~3.8%, balance of water;Described modifying agent is at least one in aluminum chloride, aluminum nitrate, potassium dichromate, maleic acid or tartaric acid.The coating good film-forming property of the present invention, cementability are high, and resistance to water, resistance to ag(e)ing, lower temperature resistance are good, and extension property is excellent, and with low cost, and cost performance is high.

Description

Modified polyvinylalcohol water-repellent paint and preparation method thereof
Technical field
The invention belongs to there is Waterproof Material Field, specifically related to a kind of modified polyvinylalcohol water-repellent paint and its preparation Method.
Background technology
Current waterproof material both domestic and external is all two big class of coiled material and coating.Either waterproof roll or water-repellent paint, All there is a variety of serious shortcomings and defect in them:Coiled material it there is no extension property, when waterproof basal plane because high/low temperature change and receive Contract, or foundation settlement occurs in that when ftractureing or rupturing that coiled material will rupture therewith, it is thus inevitable to occur leaking Water.Or as coiled material will be overlapped in assembling construction, hot melt or coating bonding are typically all used, so will also tend to can not Avoid the occurrence of crack, thus also inevitable leak.Water-repellent paint they be not in coiled material occur overlap joint there is crack leak Problem, but as they are all the water-repellent paints of the various emulsions addition filler productions using acrylic compounds, so, it Cost it is just very high., to 10,000 yuan of ton valency all more than 6000 yuan, such high cost is high for the price of which kind of emulsion Price constrains the development of water-proof emulsion significantly.Conventional waterproof product Colophonium, either soluble asphalt or liquid asphalt be still Emulsified asphalt, their not film forming, less says any extension property.It is and they are not low temperature resistant, easily solidifying below 10 DEG C Gu, less than 0 DEG C, with regard to hard embrittlement, is seriously ftractureed, and no any water proofing property can be sayed.
Although using SBS, SBR emulsion is modified can carry out larger change to its lower temperature resistance, cost is higher by Several times, can not be received by market.Or the problem that coiled material brings can be avoided to occur using water-repellent paint, but due to Emulsion cost is too high, constrains construction party and rehearses in a large number, and the cement for being mixed with a large amount of ratios is entered reduces cost.So also make to prevent The extension property that moisture film has lacked, so as to also unavoidably there is seepy question.
In view of the problems referred to above that waterproof product market is present, anti-market for water is in the urgent need to a kind of existing esters of acrylic acid waterproof The fine filming performance of coating, while also have the extensibility of the film of SBS and butadiene-styrene latex modified Colophonium, and low production cost New product.
The content of the invention
The technical problem to be solved in the present invention is:Existing waterproof product market lacks a kind of good film-forming property, good-extensibility, property Valency is than high water-repellent paint and preparation method thereof.
The present invention solves the technical scheme of technical problem:A kind of modified polyvinylalcohol water-repellent paint and its preparation side are provided Method.The coating is consisted of:
By weight percentage, polyvinyl alcohol modification emulsion 70~80%, colours water-proofing agent 20~30%;
The polyvinyl alcohol modification emulsion is consisted of:Base material 80~95%, ethylene glycol, dibutyl phthalate and poly- second The mixed liquor 5~20% of glycol;
The base material is consisted of:2699 polyvinyl alcohol 6.5~8%, antifreeze 2.42~3%, catalyst 0.14~ 0.2%, modifying agent 3.3~3.8%, balance of water;Described modifying agent be aluminum chloride, aluminum nitrate, potassium dichromate, maleic acid or At least one in tartaric acid.
Preferably, in above-mentioned modified polyvinylalcohol water-repellent paint, consisting of:
By weight percentage, polyvinyl alcohol modification emulsion 75~80%, colours water-proofing agent 20~25%;
The polyvinyl alcohol modification emulsion is consisted of:Base material 90~95%, ethylene glycol, dibutyl phthalate and poly- second The mixed liquor 5~10% of glycol;
The base material is consisted of:2699 polyvinyl alcohol 6.5~7%, antifreeze 2.42~2.8%, catalyst 0.14~ 0.18%, modifying agent 3.3~3.6%, balance of water;Described modifying agent is aluminum chloride, aluminum nitrate, potassium dichromate, maleic acid Or at least one in tartaric acid.
Preferably, in above-mentioned modified polyvinylalcohol water-repellent paint, also including dicalcium powder, Pulvis Talci or cement at least one Kind;The addition of the dicalcium powder, Pulvis Talci or cement be account for polyvinyl alcohol modification emulsion and coloring water-proofing agent total amount 20~ 40%.
Wherein, in above-mentioned modified polyvinylalcohol water-repellent paint, described catalyst is formic acid or hydrochloric acid.
Wherein, in above-mentioned modified polyvinylalcohol water-repellent paint, described antifreeze is ethylene glycol, carbamide and chlorinated paraffin Mixed liquor.
Wherein, in above-mentioned modified polyvinylalcohol water-repellent paint, described coloring water-proofing agent is carbon black slurry or Colophonium.
Present invention also offers a kind of preparation method of above-mentioned modified polyvinylalcohol water-repellent paint, comprises the following steps:
A, antifreeze, modifying agent, catalyst are dissolved in water respectively, it is standby;
The water of surpluses in base material formulation is heated to into 60 DEG C, stirring is lower to add polyvinyl alcohol, is warming up to 92~95 DEG C, protects Warm 1h, after polyvinyl alcohol is completely dissolved, adds the antifreeze for dissolving, adding the catalyst of dissolving, dissolving is added after mixing Modifying agent, more than 80 DEG C react 30~40min, be obtained base material;
B, the base material for taking step a, by weight the mixing of Ji Liao ﹕ ethylene glycol, dibutyl phthalate and Polyethylene Glycol Liquid=80~95 ﹕ 5~20 adds the mixed liquor of ethylene glycol, dibutyl phthalate and Polyethylene Glycol, stirs, and is obtained poly- Modified vinyl alcohol emulsion;
C, polyvinyl alcohol modification emulsion obtained by step b is taken, water-proofing agent=70 are coloured by weight polyvinyl alcohol modification Ru Ye ﹕ ~80 ﹕ 20~30 adds coloring water-proofing agent, stirs, and modified polyvinylalcohol water-repellent paint is obtained.
Beneficial effects of the present invention are:The invention provides a kind of modified polyvinylalcohol water-repellent paint, by using catalysis Agent, modifying agent etc. are modified to 2699 polyvinyl alcohol so that film property that modified polyvinylalcohol has had, cementability are high, resistance to Aqueouss are excellent, and resistance to ag(e)ing is good, and extension property is excellent, and lower temperature resistance is good;Meanwhile, raw material of the invention is easy to get, with low cost, former material About 1200 yuan/ton or so of material cost, compares esters of acrylic acid water-repellent paint (5000 yuan/ton or so), SBS resins and butylbenzene breast The cost performance of (8000 yuan/ton or so) with superelevation glue modified pitch.The modified polyvinylalcohol water-repellent paint preparation side of the present invention Operation is simple for method, technique is uncomplicated, can widely carry out commercial production.
Specific embodiment
The present invention provides a kind of modified polyvinylalcohol water-repellent paint, consisting of:
By weight percentage, polyvinyl alcohol modification emulsion 70~80%, colours water-proofing agent 20~30%;
The polyvinyl alcohol modification emulsion is consisted of:Base material 80~95%, ethylene glycol, dibutyl phthalate and poly- second The mixed liquor 5~20% of glycol;
The base material is consisted of:2699 polyvinyl alcohol 6.5~8%, antifreeze 2.42~3%, catalyst 0.14~ 0.2%, modifying agent 3.3~3.8%, balance of water;Described modifying agent be aluminum chloride, aluminum nitrate, potassium dichromate, maleic acid or At least one in tartaric acid.
Preferably, in above-mentioned modified polyvinylalcohol water-repellent paint, consisting of:
By weight percentage, polyvinyl alcohol modification emulsion 75~80%, colours water-proofing agent 20~25%;
The polyvinyl alcohol modification emulsion is consisted of:Base material 90~95%, ethylene glycol, dibutyl phthalate and poly- second The mixed liquor 5~10% of glycol;
The base material is consisted of:2699 polyvinyl alcohol 6.5~7%, antifreeze 2.42~2.8%, catalyst 0.14~ 0.18%, modifying agent 3.3~3.6%, balance of water;Described modifying agent is aluminum chloride, aluminum nitrate, potassium dichromate, maleic acid Or at least one in tartaric acid.
Preferably, in above-mentioned modified polyvinylalcohol water-repellent paint, also including dicalcium powder, Pulvis Talci or cement at least one Kind;The addition of the dicalcium powder, Pulvis Talci or cement be account for polyvinyl alcohol modification emulsion and coloring water-proofing agent total amount 20~ 40%.
Wherein, in above-mentioned modified polyvinylalcohol water-repellent paint, described catalyst is formic acid or hydrochloric acid.
Wherein, in above-mentioned modified polyvinylalcohol water-repellent paint, described antifreeze is ethylene glycol, carbamide and chlorinated paraffin Mixed liquor.
Wherein, in above-mentioned modified polyvinylalcohol water-repellent paint, described coloring water-proofing agent is carbon black slurry or Colophonium.
Present invention also offers a kind of preparation method of above-mentioned modified polyvinylalcohol water-repellent paint, comprises the following steps:
A, antifreeze, modifying agent, catalyst are dissolved in water respectively, it is standby;
The water of surpluses in base material formulation is heated to into 60 DEG C, stirring is lower to add polyvinyl alcohol, is warming up to 92~95 DEG C, protects Warm 1h, after polyvinyl alcohol is completely dissolved, adds the antifreeze for dissolving, adding the catalyst of dissolving, dissolving is added after mixing Modifying agent, more than 80 DEG C react 30~40min, be obtained base material;
B, the base material for taking step a, by weight the mixing of Ji Liao ﹕ ethylene glycol, dibutyl phthalate and Polyethylene Glycol Liquid=80~95 ﹕ 5~20 adds the mixed liquor of ethylene glycol, dibutyl phthalate and Polyethylene Glycol, stirs, and is obtained poly- Modified vinyl alcohol emulsion;
C, polyvinyl alcohol modification emulsion obtained by step b is taken, water-proofing agent=70 are coloured by weight polyvinyl alcohol modification Ru Ye ﹕ ~80 ﹕ 20~30 adds coloring water-proofing agent, stirs, and modified polyvinylalcohol water-repellent paint is obtained.
The present invention selects polyvinyl alcohol to be modified, and polyvinyl alcohol preferably uses 2699 polyvinyl alcohol, because which has well Film property and viscosity, and usage amount is low, and low cost, cost performance are high;But 2499 polyvinyl alcohol, 2299 polyvinyl alcohol or 2099 The polyvinyl alcohol of the various models such as polyvinyl alcohol can be used.The present invention is changed to polyvinyl alcohol by adding various auxiliary agents Property, make polyvinyl alcohol crosslink reaction for water-fast novel substance, synergism between each adjuvant is common to change the poly- second of major ingredient The performance indications such as the water proofing property of enol, cementability.
In order that water-repellent paint is more environmentally friendly, and be easy to construction spraying, product of the present invention is prepared into into liquid, thus adopts water Used as medium, polyvinyl alcohol is soluble in water, has good film property and much related to waterproof performance, water price after being dissolved in water Lattice are cheap, abundance, save production cost.
The determination of the water yield is closely bound up with polyvinyl alcohol, as polyvinyl alcohol is 10 typically in saturation, that is, reaches 10% When it is just fully saturated, it is impossible to re-dissolved, the addition of water of the present invention are striven for reaching so that polyvinyl alcohol is close to saturation and is advisable To maximum polyvinyl alcohol meltage so that solid content and viscosity are improved.
Under cryogenic, poly-vinyl alcohol solution easily solidifies, and loses flowability, so as to affecting to store and constructing, this Increase antifreeze in bright formula, to improve the lower temperature resistance of modified polyvinylalcohol water-repellent paint, while, moreover it is possible to reduce liquid and glue Degree, so as to increase the usage amount of polyvinyl alcohol, strengthens the caking property of water-repellent paint.Take into account, The antifreeze of the present invention is advisable with 2.42~3%.
In order to this not water-fast polyvinyl alcohol modification to be become the water-repellent paint of resistance to water, with the addition of in inventive formulation and change Property agent and water-proofing agent, under conditions of catalyst is present, catalyzed polyethylene alcohol crosslinks reaction, the water-fast new thing of formation Matter.Modifying agent, water-proofing agent and catalyst complement each other, and collective effect just causes polyvinyl alcohol to be modified, indispensable.Change Property agent addition maximized with polyvinyl alcohol and be modified to water-fast material and be advisable, in the present invention addition be 3.3~ 3.8%.The determination of water-fast dosage is because that this material is with good cementability and compares high solid matter, but also has Not film property and intolerant to low high temperatures.Having measured big will affect resistant of high or low temperature and film property.Amount is little and can not allow liquid Solid content increases and affects cementability and resistance to water.Take into account each side's performance and consider this amount.
In order that water-repellent paint keeps plasticity at low temperature, strengthens its extension property, while strengthening polyvinyl alcohol liquid Solid content, increase film thickness, the present invention be also added into a certain amount of ethylene glycol, dibutyl phthalate and Polyethylene Glycol Mixed liquor, the mixed liquor have good plasticization effect, have an effect with the collaboration of the auxiliary agent such as antifreeze, modifying agent, water-proofing agent.It is mixed The determination for closing liquid measure is can be enough to resist special low temperature with its film and have flexibility as foundation, it is too high can affect film solidification when Between, increase cementability, be advisable with 5~20% in the present invention.
When the modified polyvinylalcohol water-repellent paint of the present invention is prepared, clump together as polyvinyl alcohol is easy to stick at normal temperatures, Dissolution rate, more than 60 DEG C in water temperature of the present invention is affected to dissolve to polyvinyl alcohol, be then brought rapidly up to 92~95 DEG C, temperature Too low to be not easy to dissolving, the too high boiling point significantly of temperature brings difficulty to operation.
After addition modifying agent, more than 80 DEG C are maintained the temperature at, reacted 30~40 minutes, so that polyvinyl alcohol crosslinked complete Entirely, fully react.Temperature is too high, and reaction is accelerated, but reacts not enough thoroughly, and temperature is too low, extends response time, production efficiency Lowly.The response time is not stayed after adding other auxiliary agents, is because which does not produce cross-linking reaction with polyvinyl alcohol, only played auxiliary and make With.All material is all stirred when adding, and dissolution velocity faster, is reacted more complete.
The modified polyvinylalcohol water-repellent paint of the present invention, can be widely used for the waterproof of various objects, including house roof, wall Face, lavatory, bathroom, basement, market place builet below the ground, swimming pool, underground garage, different kinds of roads, bridge, tunnel, waterworks pond, Man-made lake, sewage treatment facility, garbage loading embeading place etc. need object or the place of waterproof.The present invention is alternatively arranged as bonding simultaneously The bonding that agent is used for various waterproof rolls, polypropylene waterproof material lap-joint and waterproof basal plane, the ceramic tile back of the body glues.
The modified polyvinylalcohol water-repellent paint of the present invention, with following purposes:
(1) for new and old house roof, lavatory bathroom, garage, market place builet below the ground, express highway pavement, domatic, bridge tunnel The every basal plane for needing water-proofing treatment in road, Engineering of Sewage Treatment Plant, swimming pool, man-made lake, pond, dumping place etc. all may be used To use.
(2) black type.For being embedded in the antirust, anti-corrosive of the various metallic conduits of underground, such as natural gas line, gas piping, Caliduct, jet chimney, water supply pipe and field metal hand rail, street both sides light pole and high-tension bus-bar pylon, or The antirust, anti-corrosive of bamboo and wood railing.And brightness is fine.
(3) black type, transparent type, white type may be used to the gluing of the various carcasses of waterproof roll manufacturer production, raw Produce waterproof roll (solid content of this product is 25%~65% or so, and easily, usage amount is little for gluing).
(4) for tiling (ceramic tile gum).
(5) for the production of emulsion paint.
(6) for various waterproof rolls (such as geotextiles, geomembrane, SBS coiled materials, modified bituminous pitch coiled material, PVC roll material etc. Coiled material) bonding.No longer for the inevitable excessive bonding of flame gun thermal-flame bonding or not enough bonding, this is inevitable A difficult problem and worry.It both can bonding coiled material it is bonding with waterproof basal plane and also can bonding lap-joint bonding.To waterproof polypropylene Bonding is especially firm and solid, tears by force.
(7) for the water-proof putty (water-proof function of inner-outer wall.And as the film property waterproof spy of itself is good, completely may be used To close the accumulation of salt in the surface soil phenomenon of cement, so as to not affect the color of emulsion paint).
(8) for the modified of emulsified asphalt.The film property of emulsified asphalt is very poor, more no extensibility, while lower temperature resistance Can be also very poor, also melt at high temperature.The modified polyvinylalcohol water-proof emulsion of addition 60%~80% just changes it completely and deposits Several big shortage.So as to greatly improve the quality class and use range of emulsified asphalt.
Its specific using method is:
(1) the direct construction usage of finished product, it is not necessary to add any filler, now used in the waterproof material of highest class, makes In terms of the waterproof of environment very severe or particular/special requirement;
(2) general waterproof, is applying man-hour requirement addition dicalcium powder or Pulvis Talci or cement.The ratio of addition regards engineering Prescription and oneself determine the ratio of filler.If the exposed emulsion in the cement 20% that can add 80% of waterproof coating, Then appropriate viscosity is transferred to water.It is generally speaking identical with other water-repellent paint occupation mode method.In no floating dust dust and sand, do not have There is loosening basal plane, not having the use of open fire to need the basal plane of water-proofing treatment to spray or apply can.The antirust, anti-corrosive of pipeline is direct Spray applies this finished product.Production waterproof roll gluing is identical with other gluing methods, and technique is identical.
Explanation is further explained to the specific embodiment of the present invention below by embodiment, but is not indicated that this Bright protection domain is limited in scope described in embodiment.
The technical solution of the present invention of embodiment 1~3 prepares modified polyvinylalcohol water-repellent paint
1 formula 1 of embodiment:Coating is consisted of:By weight percentage, polyvinyl alcohol modification emulsion 70%, colours water-fast Agent 30%;
The polyvinyl alcohol modification emulsion is consisted of:Base material 80%, ethylene glycol, dibutyl phthalate and Polyethylene Glycol Mixed liquor 20%;
The base material is consisted of:2699 polyvinyl alcohol 6.5%, antifreeze 3%, catalyst~0.2%, modifying agent 3.8%, Balance of water;Described modifying agent is aluminum chloride.
2 formula 2 of embodiment:Coating is consisted of:By weight percentage, polyvinyl alcohol modification emulsion 80%, colours water-fast Agent 20%;
The polyvinyl alcohol modification emulsion is consisted of:Base material 95%, ethylene glycol, dibutyl phthalate and Polyethylene Glycol Mixed liquor 5%;
The base material is consisted of:2699 polyvinyl alcohol 8%, antifreeze 3%, catalyst 0.2%, modifying agent 3.3%, surplus For water;Described modifying agent is the mixture of aluminum nitrate and potassium dichromate.
3 formula 3 of embodiment:Coating is consisted of:By weight percentage, polyvinyl alcohol modification emulsion 75%, colours water-fast Agent 25%;
The polyvinyl alcohol modification emulsion is consisted of:Base material 90%, ethylene glycol, dibutyl phthalate and Polyethylene Glycol Mixed liquor 10%;
The base material is consisted of:2699 polyvinyl alcohol 7%, antifreeze 2.8%, catalyst 0.18%, modifying agent 3.6%, Balance of water;Described modifying agent is aluminum chloride, aluminum nitrate, potassium dichromate, maleic acid and winestone acid blend.
The preparation method of embodiment 1~3 is:
A, antifreeze, modifying agent, catalyst are dissolved in water respectively, it is standby;
The water of surpluses in base material formulation is heated to into 60 DEG C, stirring is lower to add polyvinyl alcohol, is warming up to 92~95 DEG C, protects Warm 1h, after polyvinyl alcohol is completely dissolved, adds the antifreeze for dissolving, adding the catalyst of dissolving, dissolving is added after mixing Modifying agent, react 40min more than 80 DEG C, be obtained base material;
B, the base material for taking step a, respectively by the base material and ethylene glycol of formula ratio, dibutyl phthalate and Polyethylene Glycol Mixed liquor mixing and stirring, polyvinyl alcohol modification emulsion is obtained;
C, take polyvinyl alcohol modification emulsion obtained by step b, respectively will the polyvinyl alcohol modification emulsion of formula ratio and coloring it is resistance to Water preparation mixing and stirring, is obtained modified polyvinylalcohol water-repellent paint.
The modified polyvinylalcohol water-repellent paint that embodiment 1~3 is prepared carries out performance measurement, obtains such as table 1 below institute The result of the test shown.
1 modified polyvinylalcohol water-repellent paint performance measurement of table
From embodiment result, the modified polyvinylalcohol water-repellent paint solid content that inventive formulation and method are prepared Height, tensile strength, elongation at break and adhesion strength are all fine, and filming performance is excellent, long service life.And easy construction, It is easy to operate, can spray and can apply, liquid uniformity, quick solidifying, film lower temperature resistance are not good, hard crisp at -30 DEG C and have soft Property, trickling is not melted at high temperature, chemicals-resistant corrosivity are excellent, and resistance to ag(e)ing ultraviolet radiation resisting is strong.
Compare the waterproof material such as emulsified asphalt or liquid asphalt, modified pitch, the coating of the present invention is more resistant to high temperature and low Temperature, the film of formation are not dissolved at high temperature, also have flexibility at low temperature, and burning is not easy under naked light;
What is more important, the modified polyvinylalcohol water-repellent paint of the present invention have a high cost performance, the present invention into At 1300 yuan/ton or so, market like product cost price reduces 78% substantially at 6000 yuan/ton or so to its cost of material of product, Production cost is greatly reduced, with high economic worth, is suitably promoted the use of.

Claims (8)

1. modified polyvinylalcohol water-repellent paint, it is characterised in that its raw material is consisted of:
By weight percentage, polyvinyl alcohol modification emulsion 70~80%, colours water-proofing agent 20~30%;
The polyvinyl alcohol modification emulsion is consisted of:Base material 80~95%, ethylene glycol, dibutyl phthalate and Polyethylene Glycol Mixed liquor 5~20%;
The base material is consisted of:2699 polyvinyl alcohol 6.5~8%, antifreeze 2.42~3%, catalyst 0.14~0.2% change Property agent 3.3~3.8%, balance of water;During described modifying agent is aluminum chloride, aluminum nitrate, potassium dichromate, maleic acid or tartaric acid At least one.
2. modified polyvinylalcohol water-repellent paint according to claim 1, it is characterised in that its raw material is consisted of:
By weight percentage, polyvinyl alcohol modification emulsion 75~80%, colours water-proofing agent 20~25%;
The polyvinyl alcohol modification emulsion is consisted of:Base material 90~95%, ethylene glycol, dibutyl phthalate and Polyethylene Glycol Mixed liquor 5~10%;
The base material is consisted of:2699 polyvinyl alcohol 6.5~7%, antifreeze 2.42~2.8%, catalyst 0.14~0.18%, Modifying agent 3.3~3.6%, balance of water;Described modifying agent is aluminum chloride, aluminum nitrate, potassium dichromate, maleic acid or tartaric acid In at least one.
3. modified polyvinylalcohol water-repellent paint according to claim 1, it is characterised in that:Also include dicalcium powder, Pulvis Talci Or at least one in cement.
4. modified polyvinylalcohol water-repellent paint according to claim 3, it is characterised in that:The dicalcium powder, Pulvis Talci or The addition of cement is account for polyvinyl alcohol modification emulsion and coloring water-proofing agent total amount 20~40%.
5. modified polyvinylalcohol water-repellent paint according to claim 1, it is characterised in that:Described catalyst be formic acid or Hydrochloric acid.
6. modified polyvinylalcohol water-repellent paint according to claim 1, it is characterised in that:Described antifreeze is second two The mixed liquor of alcohol, carbamide and chlorinated paraffin.
7. modified polyvinylalcohol water-repellent paint according to claim 1, it is characterised in that:Described coloring water-proofing agent is carbon Black wash or Colophonium.
8. the preparation method of the modified polyvinylalcohol water-repellent paint described in any one of claim 1~7, it is characterised in that include Following steps:
A, antifreeze, modifying agent, catalyst are dissolved in water respectively, it is standby;
The water of surpluses in base material formulation is heated to into 60 DEG C, stirring is lower to add polyvinyl alcohol, is warming up to 92~95 DEG C, is incubated 1h, after polyvinyl alcohol is completely dissolved, adds the antifreeze for dissolving, adding the catalyst of dissolving, dissolving is added after mixing Modifying agent, reacts 30~40min more than 80 DEG C, base material is obtained;
B, the base material for taking step a, the mixed liquor by weight Ji Liao ﹕ ethylene glycol, dibutyl phthalate and Polyethylene Glycol= 80~95 ﹕ 5~20 adds the mixed liquor of ethylene glycol, dibutyl phthalate and Polyethylene Glycol, stirs, and polyethylene is obtained Alcohol modified emulsion;
C, take polyvinyl alcohol modification emulsion obtained by step b, by weight polyvinyl alcohol modification Ru Ye ﹕ colorings water-proofing agent=70~ 80 ﹕ 20~30 adds coloring water-proofing agent, stirs, and modified polyvinylalcohol water-repellent paint is obtained.
CN201611094583.4A 2016-12-02 2016-12-02 Modified polyvinylalcohol water-repellent paint and preparation method thereof Pending CN106554672A (en)

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CN110079103A (en) * 2019-03-22 2019-08-02 广东工业大学 A kind of SH modified emulsifying asphalt and its preparation method and application
CN113088138A (en) * 2021-04-02 2021-07-09 南京扬乾生物科技有限公司 Water-resistant polyvinyl alcohol-based bactericidal coating material and preparation method thereof

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107365522A (en) * 2017-09-21 2017-11-21 中山爱因新材料有限公司 Outstanding water-based inner wall paste putty of a kind of bin stability and preparation method thereof
CN110079103A (en) * 2019-03-22 2019-08-02 广东工业大学 A kind of SH modified emulsifying asphalt and its preparation method and application
CN113088138A (en) * 2021-04-02 2021-07-09 南京扬乾生物科技有限公司 Water-resistant polyvinyl alcohol-based bactericidal coating material and preparation method thereof

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