CN112694819A - Spraying viscoelastic polyurea for corrosion prevention and water prevention of livestock breeding floor and preparation method thereof - Google Patents

Spraying viscoelastic polyurea for corrosion prevention and water prevention of livestock breeding floor and preparation method thereof Download PDF

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Publication number
CN112694819A
CN112694819A CN202011622487.9A CN202011622487A CN112694819A CN 112694819 A CN112694819 A CN 112694819A CN 202011622487 A CN202011622487 A CN 202011622487A CN 112694819 A CN112694819 A CN 112694819A
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component
weight
polyurea
parts
hydroxyl
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CN202011622487.9A
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Chinese (zh)
Inventor
薛广钊
李忠贵
吴国成
曹克栋
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YANTAI SHUNDA POLYURETHANES CO Ltd
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YANTAI SHUNDA POLYURETHANES 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
    • C09D—COATING 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
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/02—Polyureas
    • 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
    • C08G18/4825—Polyethers containing two hydroxy groups
    • 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
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints

Abstract

The invention provides a spraying viscoelastic polyurea for corrosion prevention and water prevention of a livestock breeding floor, which consists of a component A and a component R; the component A consists of 90 to 100 weight parts of diphenylmethane-4, 4' -diisocyanate (MDI) and a prepolymer of a derivative thereof and hydroxyl-terminated polyether A and 0 to 10 weight parts of an environment-friendly plasticizer component A; the component R consists of 20 to 45 weight parts of amine chain extender, 30 to 40 weight parts of hydroxyl-terminated polyether B and 20 to 30 weight parts of environment-friendly plasticizer B. The spray viscoelastic polyurea has high adhesive force and good physical property after construction under low-temperature and high-humidity conditions, has excellent oil resistance, acid and alkali resistance, bacteria resistance and aging resistance, can be formed at will, has excellent construction performance, and can be widely applied to application places with high requirements on corrosion resistance and water resistance of livestock breeding floors. The invention also provides a preparation method of the spray-coating viscoelastic polyurea for the corrosion prevention and the water prevention of the livestock breeding floor slab.

Description

Spraying viscoelastic polyurea for corrosion prevention and water prevention of livestock breeding floor and preparation method thereof
Technical Field
The invention relates to the technical field of high polymer chemical materials, in particular to spraying viscoelastic polyurea for corrosion prevention and water prevention of a livestock breeding floor and a preparation method thereof.
Background
In recent years, livestock buildings are bred in a trend, the traditional polyurethane waterproof coating is used for floor corrosion prevention and water prevention, and the problems of poor adhesion, poor corrosion resistance and the like exist in construction under low-temperature and high-humidity conditions.
The spray coating of the viscoelastic polyurea is a novel solvent-free and pollution-free green environment-friendly construction technology which is developed and developed for meeting the environment-friendly requirement. The material has the advantages of high curing speed, insensitivity to low temperature and high humidity, good physical properties such as adhesive force and the like, excellent chemical resistance, no sagging in continuous spraying, controllable construction thickness, continuous, seamless and compact coating and moderate price. When the existing spray polyurea is used in the environment of livestock breeding floor slabs, the weather resistance is general, the adhesive force is poor, and the corrosion resistance is poor.
Disclosure of Invention
Aiming at the technical problems, the invention aims to provide a spraying viscoelastic polyurea for corrosion prevention and water prevention of a livestock breeding floor and a preparation method thereof, so as to solve the problems of poor adhesion, poor corrosion resistance and the like in construction under low-temperature and high-humidity conditions in the environment of the livestock breeding floor in the prior art.
The technical scheme adopted by the invention is as follows:
a spray-coating viscoelastic polyurea for corrosion prevention and water prevention of a livestock breeding floor slab consists of a component A and a component R;
the component A consists of 90-100 parts by weight of diphenylmethane-4, 4' -diisocyanate (MDI) and a prepolymer of a derivative thereof and hydroxyl-terminated polyether A and 0-10 parts by weight of an environment-friendly plasticizer A;
the component R consists of 20-45 parts by weight of amine chain extender, 30-40 parts by weight of hydroxyl-terminated polyether B and 20-30 parts by weight of environment-friendly plasticizer B.
The spray-coating viscoelastic polyurea for the corrosion prevention and the water prevention of the livestock-raising floor slab is prepared from 50-65 parts by weight of diphenylmethane-4, 4' -diisocyanate (MDI) and derivatives thereof and 20-35 parts by weight of hydroxyl-terminated polyether A.
The spray-coating viscoelastic polyurea for the corrosion prevention and the water prevention of the livestock-raising floor slab is characterized in that the prepolymer is prepared from 55-65 parts by weight of diphenylmethane-4, 4' -diisocyanate (MDI) and derivatives thereof and 25-35 parts by weight of hydroxyl-terminated polyether A; the component R consists of 25 to 35 weight parts of amine chain extender, 35 to 40 weight parts of hydroxyl-terminated polyether B and 25 to 30 weight parts of environment-friendly plasticizer B.
The spray-coating viscoelastic polyurea for the corrosion prevention and the water prevention of the livestock-raising floor slab, disclosed by the invention, is characterized in that diphenylmethane-4, 4 '-diisocyanate (MDI) and derivatives thereof in the component A are blended MID, and the blended MID is liquid MDI with the 2, 4' -MDI content of 50 wt%; the hydroxyl-terminated polyether A is polypropylene oxide polyalcohol.
The spray-coating viscoelastic polyurea for the corrosion prevention and the water prevention of the livestock-raising floor slab, disclosed by the invention, is characterized in that in the component A, polyoxypropylene polyol is polyoxypropylene diol, the molecular weight of the polyoxypropylene diol is one or two of 1000 and 2000, and the environment-friendly plasticizer A is one or more of chlorinated fatty acid methyl ester, chlorinated palm oil methyl ester and epoxy methyl ester.
The spray viscoelastic polyurea for the corrosion prevention and the water prevention of the livestock-raising floor slab, disclosed by the invention, is characterized in that the amine chain extender is one or more of diethyl toluenediamine (DETDA, E100), 4', 4-bis-sec-butyl aminodiphenylmethane (MDBA), dimethyl sulfotoluenediamine (DMTDA, E300), 3' -dichloro-4, 4' -diaminodiphenylmethane (MOCA) and isophorone diamine (IPDA).
The spray-coating viscoelastic polyurea for the corrosion prevention and the water prevention of the livestock-raising floor slab, disclosed by the invention, is characterized in that the hydroxyl-terminated polyether B is polyoxypropylene polyol, the polyoxypropylene polyol is polyoxypropylene glycol, and the molecular weight of the polyoxypropylene polyol is one or two of 1000 and 2000; the environment-friendly plasticizer B is one or more of chlorinated fatty acid methyl ester, chlorinated palm oil methyl ester and epoxy methyl ester.
The spraying viscoelastic polyurea for the corrosion prevention and the water prevention of the livestock breeding floor slab, disclosed by the invention, wherein the isocyanate indexes of the component A and the component R are set to be 1.05-1.1; the volume ratio of the component A to the component R is 1: 1.
the preparation method of the spray-coating viscoelastic polyurea for the corrosion prevention and the water prevention of the livestock breeding floor slab comprises the following steps:
(1) preparation of a component A: putting the hydroxyl-terminated polyether A and the environment-friendly plasticizer A into a reaction kettle, heating to 90-100 ℃, reacting for 4-6 hours, then dehydrating under reduced pressure for 1-2 hours, cooling to below 80 ℃, adding diphenylmethane-4, 4' -diisocyanate (MDI) and derivatives thereof, reacting for 2-3 hours while keeping the temperature at 80-85 ℃, cooling to below 50 ℃, titrating the NCO value, and storing for later use;
(2) preparation of the R component: and (2) putting the amine chain extender, the hydroxyl-terminated polyether B and the environment-friendly plasticizer B into a dispersion kettle according to the parts by weight, dispersing the components uniformly, and storing the components for later use, wherein the dispersion rotating speed is 400-600r/min, and the dispersion time is 40-60 min.
The spraying viscoelastic polyurea for the corrosion prevention and the water prevention of the livestock breeding floor and the preparation method thereof are characterized in that the NCO% content of the component A is controlled to be 12-20%.
The invention has the beneficial effects that:
the spray viscoelastic polyurea has high adhesive force and good physical property after construction under low-temperature and high-humidity conditions, has excellent oil resistance, acid and alkali resistance, bacteria resistance and aging resistance, can be formed at will, has excellent construction performance, and can be widely applied to application places with high requirements on corrosion resistance and water resistance of livestock breeding floors.
The spray-coating viscoelastic polyurea for the corrosion prevention and the water prevention of the livestock breeding floor slab is prepared by mixing MID and hydroxyl polyether, and has adjustable reaction speed and excellent adhesive force.
According to the spray-coating viscoelastic polyurea for the corrosion prevention and the water prevention of the livestock-raising floor slab, the hydroxyl polyether in the R component is polyoxypropylene glycol, and the crosslinking density is moderate after the prepolymer is blended with MID.
According to the preparation method of the spraying viscoelastic polyurea for the corrosion prevention and the water prevention of the livestock breeding floor slab, the reaction controllability of the preparation method of the component A is strong, and the influence of external factors can be effectively eliminated; the preparation method of the component R can adjust the reaction speed and the physical properties after being mixed with the component A according to the requirements of products.
The present invention will be further described with reference to the following specific examples.
Detailed Description
Example 1
A spray-coating viscoelastic polyurea for corrosion prevention and water prevention of a livestock breeding floor slab consists of a component A and a component R;
the component A consists of 90 parts by weight of diphenylmethane-4, 4' -diisocyanate (MDI) and a prepolymer of a derivative thereof and hydroxyl-terminated polyether A and 10 parts by weight of an environment-friendly plasticizer A; the prepolymer is prepared from 65 parts by weight of diphenylmethane-4, 4' -diisocyanate (MDI) and derivatives thereof and 25 parts by weight of hydroxyl-terminated polyether A;
the component R consists of 35 parts by weight of amine chain extender, 40 parts by weight of hydroxyl-terminated polyether B and 25 parts by weight of environment-friendly plasticizer B.
Diphenylmethane-4, 4 '-diisocyanate (MDI) and derivatives thereof in the A component are blended MID which is liquid MDI with the 2, 4' -MDI content of 50 wt%.
The hydroxyl-terminated polyether A is polyoxypropylene polyol, the polyoxypropylene polyol is preferably polyoxypropylene glycol, and the molecular weight of the polyoxypropylene polyol is 1000.
The environment-friendly plasticizer A is chlorinated fatty acid methyl ester.
The amine chain extender is diethyl toluene diamine (DETDA, E100) and 4', 4-bis-sec-butyl amino diphenylmethane (MDBA), and the mass ratio of the diethyl toluene diamine to the 4', 4-bis-sec-butyl amino diphenylmethane is 1: 1.5.
the hydroxyl-terminated polyether B is polyoxypropylene polyol, the polyoxypropylene polyol is preferably polyoxypropylene glycol, and the molecular weight of the polyoxypropylene polyol is 1000.
The environment-friendly plasticizer B is chlorinated fatty acid methyl ester.
The isocyanate index of the A and R components was set at 1.05.
The volume ratio of the component A to the component R is 1: 1.
the preparation method of the spray-coating viscoelastic polyurea for the corrosion prevention and the water prevention of the livestock breeding floor slab comprises the following steps:
(1) preparation of a component A: preparing raw materials according to a ratio, putting the hydroxyl-terminated polyether A and the environment-friendly plasticizer A into a reaction kettle, heating to 95 ℃, reacting for 5 hours, decompressing and dehydrating for 2 hours, cooling to below 80 ℃, adding diphenylmethane-4, 4' -diisocyanate (MDI) and derivatives thereof, reacting for 2 hours while keeping the temperature at 80 ℃, cooling to below 50 ℃, titrating the NCO value, and storing for later use;
(2) preparation of the R component: and (2) putting the amine chain extender, the hydroxyl-terminated polyether B and the environment-friendly plasticizer B into a dispersion kettle according to the parts by weight, dispersing the components uniformly, and storing the components for later use, wherein the dispersion rotating speed is 400-600r/min, and the dispersion time is 60 min.
When in use, the component A in the step (1) and the component R in the step (2) are mixed at the outlet of the spray gun by using the spray gun.
Example 2
A spray-coating viscoelastic polyurea for corrosion prevention and water prevention of a livestock breeding floor slab consists of a component A and a component R;
the component A consists of 90 parts by weight of diphenylmethane-4, 4' -diisocyanate (MDI) and a prepolymer of a derivative thereof and hydroxyl-terminated polyether A and 10 parts by weight of an environment-friendly plasticizer A; the prepolymer is prepared from 60 parts by weight of diphenylmethane-4, 4' -diisocyanate (MDI) and derivatives thereof and 30 parts by weight of hydroxyl-terminated polyether A;
the component R consists of 35 parts by weight of amine chain extender, 35 parts by weight of hydroxyl-terminated polyether B and 30 parts by weight of environment-friendly plasticizer B;
diphenylmethane-4, 4 '-diisocyanate (MDI) and derivatives thereof in the A component are blended MID which is liquid MDI with the 2, 4' -MDI content of 50 wt%.
The hydroxyl-terminated polyether A is polyoxypropylene polyol, the polyoxypropylene polyol is preferably polyoxypropylene glycol, and the molecular weight of the polyoxypropylene polyol is 1000.
The environment-friendly plasticizer A is chloro palm oil methyl ester.
The R component amine chain extender is 4', 4-di-sec-butyl aminodiphenylmethane (MDBA) and dimethylthiotoluenediamine (DMTDA, E300), and the mass ratio of the two is 1: 1.5.
the hydroxyl-terminated polyether B is polyoxypropylene polyol, the polyoxypropylene polyol is preferably polyoxypropylene glycol, and the molecular weight of the polyoxypropylene polyol is 2000.
The environment-friendly plasticizer B is chloro-palm oil methyl ester.
The isocyanate index of the A and R components was set at 1.05.
The volume ratio of the component A to the component R is 1: 1.
the preparation method of the spray-coating viscoelastic polyurea for the corrosion prevention and the water prevention of the livestock breeding floor slab comprises the following steps:
(1) preparation of a component A: preparing raw materials according to a ratio, putting the hydroxyl-terminated polyether A and the environment-friendly plasticizer A into a reaction kettle, heating to 95 ℃, reacting for 5 hours, decompressing and dehydrating for 2 hours, cooling to below 80 ℃, adding diphenylmethane-4, 4' -diisocyanate (MDI) and derivatives thereof, reacting for 2 hours while keeping the temperature at 80 ℃, cooling to below 50 ℃, titrating the NCO value, and storing for later use;
(2) preparation of the R component: and (2) putting the amine chain extender, the hydroxyl-terminated polyether B and the environment-friendly plasticizer B into a dispersion kettle according to the parts by weight, dispersing the components uniformly, and storing the components for later use, wherein the dispersion rotating speed is 400-600r/min, and the dispersion time is 60 min.
When in use, the component A in the step (1) and the component R in the step (2) are mixed at the outlet of the spray gun by using the spray gun.
Example 3
A spray-coating viscoelastic polyurea for corrosion prevention and water prevention of a livestock breeding floor slab consists of a component A and a component R;
the component A consists of 90 parts by weight of diphenylmethane-4, 4' -diisocyanate (MDI) and a prepolymer of a derivative thereof and hydroxyl-terminated polyether A and 10 parts by weight of an environment-friendly plasticizer A; the prepolymer is prepared from 55 parts by weight of diphenylmethane-4, 4' -diisocyanate (MDI) and derivatives thereof and 35 parts by weight of hydroxyl-terminated polyether A;
the component R consists of 35 parts by weight of amine chain extender, 35 parts by weight of hydroxyl-terminated polyether B and 30 parts by weight of environment-friendly plasticizer B;
diphenylmethane-4, 4 '-diisocyanate (MDI) and derivatives thereof in the A component are blended MID which is liquid MDI with the 2, 4' -MDI content of 50 wt%.
The hydroxyl-terminated polyether A is polyoxypropylene polyol, the polyoxypropylene polyol is preferably polyoxypropylene glycol, and the molecular weight of the polyoxypropylene polyol is 2000.
The environment-friendly plasticizer A is epoxy methyl ester.
The R component amine chain extender is diethyl toluene diamine (DETDA, E100) and 3,3 '-dichloro-4, 4' -diaminodiphenylmethane (MOCA), and the mass ratio of the diethyl toluene diamine to the 3,3 '-dichloro-4, 4' -diaminodiphenylmethane is 1: 1.
the hydroxyl-terminated polyether B is polyoxypropylene polyol, the polyoxypropylene polyol is preferably polyoxypropylene glycol, and the molecular weight of the polyoxypropylene polyol is 2000.
The environment-friendly plasticizer B is epoxy methyl ester.
The isocyanate index of the A component and the R component was set at 1.1.
The volume ratio of the component A to the component R is 1: 1.
the preparation method of the spray-coating viscoelastic polyurea for the corrosion prevention and the water prevention of the livestock breeding floor slab comprises the following steps:
(1) preparation of a component A: preparing raw materials according to a ratio, putting the hydroxyl-terminated polyether A and the environment-friendly plasticizer A into a reaction kettle, heating to 95 ℃, reacting for 5 hours, decompressing and dehydrating for 2 hours, cooling to below 80 ℃, adding diphenylmethane-4, 4' -diisocyanate (MDI) and derivatives thereof, reacting for 2 hours while keeping the temperature at 80 ℃, cooling to below 50 ℃, titrating the NCO value, and storing for later use;
(2) preparation of the R component: and (2) putting the amine chain extender, the hydroxyl-terminated polyether B and the environment-friendly plasticizer B into a dispersion kettle according to the parts by weight, dispersing the components uniformly, and storing the components for later use, wherein the dispersion rotating speed is 400-600r/min, and the dispersion time is 60 min.
When in use, the component A in the step (1) and the component R in the step (2) are mixed at the outlet of the spray gun by using the spray gun.
The main indexes are shown in table 1.
TABLE 1 Main indices of the spray viscoelastic polyureas described in examples 1 to 3
Figure BDA0002876485050000071
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims (10)

1. The utility model provides a livestock-raising floor is anticorrosive waterproof with sticky bullet polyurea of spraying which characterized in that: consists of an A component and an R component;
the component A consists of 90 to 100 parts by weight of prepolymers of diphenylmethane-4, 4' -diisocyanate and derivatives thereof and hydroxyl-terminated polyether A and 0 to 10 parts by weight of an environment-friendly plasticizer A;
the component R consists of 20-45 parts by weight of amine chain extender, 30-40 parts by weight of hydroxyl-terminated polyether B and 20-30 parts by weight of environment-friendly plasticizer B.
2. The livestock-raising floor anticorrosion and waterproof spray-coating viscoelastic polyurea of claim 1, characterized in that: the prepolymer is prepared from 50-65 parts by weight of diphenylmethane-4, 4' -diisocyanate and derivatives thereof and 20-35 parts by weight of hydroxyl-terminated polyether A.
3. The livestock-raising floor anticorrosion and waterproof spray-coating viscoelastic polyurea as claimed in claim 2, is characterized in that: the prepolymer is prepared from 55-65 parts by weight of diphenylmethane-4, 4' -diisocyanate and derivatives thereof and 25-35 parts by weight of hydroxyl-terminated polyether A; the component R consists of 25-35 parts by weight of amine chain extender, 35-40 parts by weight of hydroxyl-terminated polyether B and 25-30 parts by weight of environment-friendly plasticizer B.
4. The livestock-raising floor anticorrosion and waterproof spray-coating viscoelastic polyurea of claim 1, characterized in that: diphenylmethane-4, 4 '-diisocyanate and derivatives thereof in the component A are blended MID which is liquid MDI with the 2, 4' -MDI content of 50 wt%; the hydroxyl-terminated polyether A is polypropylene oxide polyalcohol.
5. The livestock-raising floor anticorrosion and waterproof spray-coating viscoelastic polyurea of claim 4, characterized in that: in the component A, the polyoxypropylene polyol is polyoxypropylene diol, and the molecular weight of the polyoxypropylene polyol is one or two of 1000 and 2000; the environment-friendly plasticizer A is one or more of chlorinated fatty acid methyl ester, chlorinated palm oil methyl ester and epoxy methyl ester.
6. The livestock-raising floor anticorrosion and waterproof spray-coating viscoelastic polyurea of claim 1, characterized in that: the R component amine chain extender is one or more of diethyltoluenediamine, 4', 4-bis-sec-butylaminodiphenylmethane, dimethylthiotoluenediamine, 3' -dichloro-4, 4' -diaminodiphenylmethane and isophoronediamine.
7. The livestock-raising floor anticorrosion and waterproof spray-coating viscoelastic polyurea of claim 1, characterized in that: the hydroxyl-terminated polyether B is polyoxypropylene polyol which is polyoxypropylene glycol and has one or two of molecular weights of 1000 and 2000; the environment-friendly plasticizer B is one or more of chlorinated fatty acid methyl ester, chlorinated palm oil methyl ester and epoxy methyl ester.
8. The livestock-raising floor anticorrosion and waterproof spray-coating viscoelastic polyurea of claim 1, characterized in that: the isocyanate index of the A component and the isocyanate index of the R component are set to be 1.05-1.1; the volume ratio of the component A to the component R is 1: 1.
9. the preparation method of the spray-coating viscoelastic polyurea for corrosion prevention and water prevention of the livestock breeding floor slab as claimed in any one of claims 1 to 8, is characterized in that: the method comprises the following steps:
(1) preparation of a component A: putting the hydroxyl-terminated polyether A and the environment-friendly plasticizer A into a reaction kettle, heating to 90-100 ℃, reacting for 4-6 hours, then dehydrating under reduced pressure for 1-2 hours, cooling to below 80 ℃, adding diphenylmethane-4, 4' -diisocyanate and derivatives thereof, reacting for 2-3 hours while keeping the temperature at 80-85 ℃, cooling to below 50 ℃, titrating the NCO value, and storing for later use;
(2) preparation of the R component: and (2) putting the amine chain extender, the hydroxyl-terminated polyether B and the environment-friendly plasticizer B into a dispersion kettle according to the parts by weight, dispersing the components uniformly, and storing the components for later use, wherein the dispersion rotating speed is 400-600r/min, and the dispersion time is 40-60 min.
10. The livestock-raising floor anti-corrosion waterproof spray-coating viscoelastic polyurea and the preparation method thereof according to claim 9 are characterized in that: the NCO% content of the component A is controlled to be 12-20%.
CN202011622487.9A 2020-12-31 2020-12-31 Spraying viscoelastic polyurea for corrosion prevention and water prevention of livestock breeding floor and preparation method thereof Pending CN112694819A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101818018A (en) * 2009-02-26 2010-09-01 北京东方雨虹防水技术股份有限公司 Knife coating type polyurea waterproof coating
CN102533072A (en) * 2010-12-31 2012-07-04 北京市中通新型建筑材料公司 Spraying type polyurea elastomer material against root and stem puncturing and production method
CN103525280A (en) * 2013-10-10 2014-01-22 上海派睿斯化工有限公司 Formula of spray polyurea high-strength elastic waterproof coating and production method thereof
CN105273601A (en) * 2014-07-24 2016-01-27 佛山市顺德区合胜化工实业有限公司 High-strength polyurethane waterproof coating material and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101818018A (en) * 2009-02-26 2010-09-01 北京东方雨虹防水技术股份有限公司 Knife coating type polyurea waterproof coating
CN102533072A (en) * 2010-12-31 2012-07-04 北京市中通新型建筑材料公司 Spraying type polyurea elastomer material against root and stem puncturing and production method
CN103525280A (en) * 2013-10-10 2014-01-22 上海派睿斯化工有限公司 Formula of spray polyurea high-strength elastic waterproof coating and production method thereof
CN105273601A (en) * 2014-07-24 2016-01-27 佛山市顺德区合胜化工实业有限公司 High-strength polyurethane waterproof coating material and preparation method thereof

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Application publication date: 20210423