CN112980319A - Spraying type double-component polyurethane floor coating and preparation method thereof - Google Patents
Spraying type double-component polyurethane floor coating and preparation method thereof Download PDFInfo
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- CN112980319A CN112980319A CN202110271489.6A CN202110271489A CN112980319A CN 112980319 A CN112980319 A CN 112980319A CN 202110271489 A CN202110271489 A CN 202110271489A CN 112980319 A CN112980319 A CN 112980319A
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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
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- Life Sciences & Earth Sciences (AREA)
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- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Floor Finish (AREA)
Abstract
The invention discloses a spraying type double-component polyurethane floor coating which consists of a component A and a component B, wherein the mass ratio of the component A to the component B is 1-1.5: 1; wherein the component A comprises the following components in percentage by weight: 60 to 69.9 percent of castor oil, 10 to 15 percent of filling modifier, 10 to 19.9 percent of chemical modifier, 10 to 19.9 percent of micromolecular dihydric alcohol and 0.1 to 0.3 percent of color paste; the component B is polyisocyanate. The filling modifier is paint slag; the chemical modifier is PET alcoholysis product. The spray type polyurethane floor coating is a reaction curing coating, has low cost, high curing speed and high adhesive strength, and can meet the construction requirements of various planes. Meanwhile, the environment-friendly composite material does not contain solvent, is environment-friendly, accords with the environment-friendly idea, and is suitable for workshops, parking lots, playgrounds and the like of various industrial and mining enterprises.
Description
Technical Field
The invention relates to a spraying type double-component polyurethane floor coating and a preparation method thereof, belonging to the technical field of floor coatings.
Background
The polyurethane terrace has the advantages of impact resistance, wear resistance, corrosion resistance, convenient construction and the like, and is suitable for workshops, parking lots, playgrounds and the like of various industrial and mining enterprises. With the increasing exhaustion of fossil resources and the increasing enhancement of environmental awareness of people, social demands have raised new requirements for the coating industry, namely the development of novel coatings which are environment-friendly, high-performance, aqueous, solvent-free, high-solid, powder and radiation-curable. The castor oil contains active group-hydroxyl which can participate in polyurethane reaction, so that the castor oil can partially replace polyether polyol or polyester polyol to prepare polyurethane adhesives, coatings and the like.
In order to save resources, waste recycling is increasingly gaining attention. With the rapid development of automobile industry in China, the using amount of automobile paint is increased year by year, and the generated paint waste residue is not ignored. In the paint spraying process, at least 40-60% of over-sprayed paint mist is scattered in the manual spraying process, over-sprayed paint mist of more than 10% can be generated in the electrostatic spraying process, and the over-sprayed paint mist is condensed and sinks to form paint waste residues. Paint slag is one of HW12 type hazardous wastes. The paint slag is recycled, which is beneficial to the nation and the people.
The consumption of PET (polyethylene terephthalate) bottles in China is very high, the waste PET bottles cannot be spontaneously degraded and are not discarded, and serious environmental pollution and resource waste are caused, so that the recovery and reutilization of PET packages such as the waste PET bottles have important practical significance. The waste PET bottles are recycled by a physical method and a chemical method. The chemical recovery method is to depolymerize waste PET bottles under certain reaction conditions to produce useful chemicals.
Compared with the foreign development, the market of polyurethane terrace materials in China starts late, and high-performance solvent-free and water-based terrace coatings mainly depend on import. Caters to the domestic market, and has important significance in developing the polyurethane terrace coating with low cost and high performance.
Disclosure of Invention
Aiming at the prior art, the invention provides a spraying type double-component polyurethane floor coating and a preparation method thereof from the aspects of environmental protection and resource utilization. According to the invention, the waste paint slag and the PET alcoholysis product are applied to the floor paint formula, so that the cost is reduced, and the performance is improved.
The invention is realized by the following technical scheme:
a spraying type double-component polyurethane floor coating comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 1-1.5: 1; wherein the component A comprises the following components in percentage by weight: 60 to 69.9 percent of castor oil, 10 to 15 percent of filling modifier, 10 to 19.9 percent of chemical modifier, 10 to 19.9 percent of micromolecular dihydric alcohol and 0.1 to 0.3 percent of color paste; the component B is polyisocyanate.
The filling modifier is paint slag, and the main film forming substance is polyester resin or acrylate resin. The water paint splashes into the air in the construction process and falls on the surrounding walls, the ground and other parts, solid powder waste materials are formed after drying, and the recovered materials after impurity removal and screening are commonly called paint slag.
The chemical modifier is a PET alcoholysis product and is prepared by the following method: and (3) crushing the recycled PET polyester bottle, mixing the crushed PET polyester bottle with paint residues, and performing diglycol alcoholysis to obtain a PET alcoholysis product.
Further, the weight ratio of the PET polyester bottle, the paint slag and the diglycol is as follows: 60:10:30.
Further, the alcoholysis conditions are as follows: firstly, reacting at normal pressure at 210-230 ℃ for 9-10 hours; and then carrying out a reduced pressure reaction at the temperature of 150-160 ℃ for 1-2 hours.
The small molecule dihydric alcohol is selected from 1, 4 butanediol or diethylene glycol.
The polyisocyanate is a mixture of a certain amount of isocyanate with higher functionality and diphenylmethane diisocyanate, and the technical indexes are as follows: -NCO content not less than 30% and viscosity not higher than 250 mPa.s.
The preparation method of the spray type polyurethane terrace coating comprises the following steps:
(1) preparing raw materials: removing macroscopic impurities from the recovered paint residues, sieving with a 200-mesh sieve, placing in an oven, heating at 80-100 ℃ for 2 hours, and airing to room temperature for later use;
(2) preparation of component A: adding castor oil, a chemical modifier, a filling modifier, a small molecular dihydric alcohol and color paste into a reaction kettle, dehydrating for 2-3 h at 110-120 ℃ under a vacuum condition, cooling and discharging to obtain a component A, and sealing and storing.
When the spraying type polyurethane floor coating is used, special spraying equipment for polyurethane is adopted, A, B components are respectively added into respective material tanks, the temperature of the material A is controlled to be 30-40 ℃, the temperature of the material B is controlled to be 20-30 ℃, and the proportion of the material A and the material B is set, so that spraying construction can be carried out.
The spray type polyurethane floor coating disclosed by the invention has the following beneficial effects:
(1) a new direction is provided for the utilization of the paint slag, and the addition of the paint slag improves the weather resistance of the paint on one hand and reduces the formula cost of the floor paint on the other hand.
(2) The method provides a new direction for the utilization of PET alcoholysis products (recycled PET polyester bottles are mixed with paint residues after being crushed and are subjected to diglycol alcoholysis to obtain the PET alcoholysis products), and the addition of the PET alcoholysis products improves the activity of a system on one hand and reduces the formula cost of the floor coating on the other hand.
(3) The spray type polyurethane floor coating is a reaction curing coating, has low cost, high curing speed and high adhesive strength, and can meet the construction requirements of various planes. Meanwhile, the environment-friendly composite paint does not contain solvent, is environment-friendly, accords with the environment-friendly idea, avoids the health injury and environment pollution to constructors due to solvent volatilization in the construction process, and is suitable for various industrial and mining enterprise workshops, parking lots, playgrounds and the like.
The various terms and phrases used herein have the ordinary meaning as is well known to those skilled in the art. To the extent that the terms and phrases are not inconsistent with known meanings, the meaning of the present invention will prevail.
Detailed Description
The present invention will be further described with reference to the following examples. However, the scope of the present invention is not limited to the following examples. It will be understood by those skilled in the art that various changes and modifications may be made to the invention without departing from the spirit and scope of the invention.
The present invention has been described generally and/or specifically with respect to materials used in testing and testing methods. Although many materials and methods of operation are known in the art for the purpose of carrying out the invention, the invention is nevertheless described herein in as detail as possible.
The instruments, reagents, materials and the like used in the following examples are conventional instruments, reagents, materials and the like in the prior art and are commercially available in a normal manner unless otherwise specified. Unless otherwise specified, the experimental methods, detection methods, and the like described in the following examples are conventional experimental methods, detection methods, and the like in the prior art.
Example 1 preparation of spray polyurethane floor coating
The method comprises the following steps:
(1) preparing raw materials: removing macroscopic impurities from the recovered paint residues, sieving with a 200-mesh sieve, placing in an oven, heating at 80-100 ℃ for 2 hours, and airing to room temperature for later use;
(2) preparation of component A: adding 60 parts of castor oil, 19.9 parts of PET alcoholysate, 10 parts of paint slag, 10 parts of diethylene glycol and 0.1 part of color paste into a reaction kettle, dehydrating for 2.5 hours at 110-120 ℃ under a vacuum condition, cooling and discharging to obtain a component A, and sealing and storing.
The PET alcoholysis product is prepared by the following method: and (3) crushing the recycled PET polyester bottle, mixing the crushed PET polyester bottle with paint residues, and performing diglycol alcoholysis to obtain a PET alcoholysis product. The weight ratio of the PET polyester bottle, the paint slag and the diglycol is as follows: 60:10: 30; the alcoholysis conditions are as follows: firstly, reacting at the normal pressure at 220 ℃ for 10 hours; the reaction was then carried out under reduced pressure at 160 ℃ for 2 hours.
(3) And the component B adopts commercially available PM-200 polyisocyanate.
When the spraying material is used, special spraying equipment for polyurethane is adopted, A, B components are respectively added into respective material tanks, the temperature of the material A is controlled to be 30-40 ℃, the temperature of the material B is controlled to be 20-30 ℃, the ratio of the material A to the material B is set to be 1.5:1, and then spraying construction can be carried out.
Indexes of the prepared spray type polyurethane terrace paint are shown in table 1.
TABLE 1
| Serial number | Item | Index requirement | Test results | Detection standard |
| 1 | Adhesion (circling), grade | 0 | 0 | GB/T1720-1979 |
| 2 | Shore D hardness | ≥80 | ≥85 | GB/T22374-2008 |
| 3 | Compressive strength, MPa | ≥45 | ≥50 | GB/T22374-2008 |
| 4 | Impact resistance (1 kg,50 cm) | The coating has no cracks, peeling and wrinkles | The coating has no cracks, peeling and wrinkles | GB/T1732-1993 |
| 5 | Abrasion resistance (1000 g/1000 r), g | <0.01 | 0.005 | GB/T1768-2006 |
| 6 | Acid resistance (50% H)2SO4，168h） | No abnormality | No abnormality | GB/T9274-1988 |
| 7 | Alkali resistance (30% NaOH, 168 h) | No abnormality | No abnormality | GB/T9274-1988 |
| 8 | Resisting artificial weather aging for 1000h | No bubbling, no falling off and no crack | No bubbling, no falling off and no crack | GB/T14522-2008 |
| 9 | Salt spray resistance, 2000h | No abnormality | No abnormality | GB/T1771-2007 |
Example 2 preparation of spray polyurethane floor coating
The method comprises the following steps:
(1) preparing raw materials: removing macroscopic impurities from the recovered paint residues, sieving with a 200-mesh sieve, placing in an oven, heating at 80-100 ℃ for 2 hours, and airing to room temperature for later use;
(2) preparation of component A: adding 69.7 parts of castor oil, 10 parts of PET alcoholysate, 10 parts of paint slag, 10 parts of diethylene glycol and 0.3 part of color paste into a reaction kettle, dehydrating for 2.5 hours at 110-120 ℃ under a vacuum condition, cooling and discharging to obtain a component A, and sealing and storing.
The PET alcoholysis product is prepared by the following method: and (3) crushing the recycled PET polyester bottle, mixing the crushed PET polyester bottle with paint residues, and performing diglycol alcoholysis to obtain a PET alcoholysis product. The weight ratio of the PET polyester bottle, the paint slag and the diglycol is as follows: 60:10: 30; the alcoholysis conditions are as follows: firstly, reacting at the normal pressure at the temperature of 230 ℃ for 9 hours; the reaction was then carried out under reduced pressure at 160 ℃ for 2 hours.
(3) And the component B adopts commercially available PM-200 polyisocyanate.
When the spraying material is used, special spraying equipment for polyurethane is adopted, A, B components are respectively added into respective material tanks, the temperature of the material A is controlled to be 30-40 ℃, the temperature of the material B is controlled to be 20-30 ℃, the ratio of the material A to the material B is set to be 1:1, and then spraying construction can be carried out.
Comparative example 1 preparation of polyurethane floor coating
Preparation of component A: adding 75 parts of castor oil, 24.5 parts of diglycol and 0.5 part of color paste into a reaction kettle, dehydrating for 2.5 hours at 110-120 ℃ under a vacuum condition, cooling and discharging to obtain the component A, and sealing and storing.
And the component B adopts commercially available PM-200 polyisocyanate.
A. The mass ratio of the two components B is 1.5: 1.
Comparison of the properties of example 1 and comparative example 1: the gel time for the examples was 5 minutes, for comparative example 120 minutes; the artificial aging resistance time of example 1 was 1000 hours, and that of comparative example 1 was 800 hours. The cost of raw materials is as follows: example 1 is reduced by more than 20% compared to comparative example 1.
The above examples are provided to those of ordinary skill in the art to fully disclose and describe how to make and use the claimed embodiments, and are not intended to limit the scope of the disclosure herein. Modifications apparent to those skilled in the art are intended to be within the scope of the appended claims.
Claims (7)
1. A spraying type double-component polyurethane floor coating is characterized in that: the paint consists of a component A and a component B, wherein the mass ratio of the component A to the component B is 1-1.5: 1; wherein the component A comprises the following components in percentage by weight: 60 to 69.9 percent of castor oil, 10 to 15 percent of filling modifier, 10 to 19.9 percent of chemical modifier, 10 to 19.9 percent of micromolecular dihydric alcohol and 0.1 to 0.3 percent of color paste; the component B is polyisocyanate;
the filling modifier is paint slag;
the chemical modifier is PET alcoholysis product.
2. The spray-on two-component polyurethane floor coating of claim 1, characterized in that: the PET alcoholysis product is prepared by the following method: and (3) crushing the recycled PET polyester bottle, mixing the crushed PET polyester bottle with paint residues, and performing diglycol alcoholysis to obtain a PET alcoholysis product.
3. The spray-on two-component polyurethane floor coating of claim 2, characterized in that: the PET polyester bottle, the paint slag and the diglycol are in the following weight ratio: 60:10:30.
4. The spray-on two-component polyurethane floor coating of claim 2, characterized in that: the alcoholysis conditions are as follows: firstly, reacting at normal pressure at 210-230 ℃ for 9-10 hours; and then carrying out a reduced pressure reaction at the temperature of 150-160 ℃ for 1-2 hours.
5. The spray-on two-component polyurethane floor coating of claim 1, characterized in that: the small molecule dihydric alcohol is selected from 1, 4 butanediol or diethylene glycol.
6. A preparation method of the spray type two-component polyurethane floor coating of any one of claims 1 to 5, characterized in that: the method comprises the following steps:
(1) preparing raw materials: removing macroscopic impurities from the recovered paint residues, sieving with a 200-mesh sieve, placing in an oven, heating at 80-100 ℃ for 2 hours, and airing to room temperature for later use;
(2) preparation of component A: adding castor oil, a chemical modifier, a filling modifier, a small molecular dihydric alcohol and color paste into a reaction kettle, dehydrating for 2-3 h at 110-120 ℃ under a vacuum condition, cooling and discharging to obtain a component A, and sealing and storing.
7. The use method of the spray type two-component polyurethane floor coating according to any one of claims 1 to 5, characterized in that: and (3) respectively adding the A, B two components into respective charging tanks by adopting spraying equipment, controlling the temperature of the material A to be 30-40 ℃ and the temperature of the material B to be 20-30 ℃, and carrying out spraying construction.
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| CN202110271489.6A CN112980319B (en) | 2021-03-12 | 2021-03-12 | Spraying type double-component polyurethane floor coating and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116144255A (en) * | 2022-11-29 | 2023-05-23 | 海口正宇企业管理咨询服务有限公司 | Antistatic waterborne polyurethane mortar terrace material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102757722A (en) * | 2012-07-13 | 2012-10-31 | 江苏博特新材料有限公司 | Bi-component polyurethane coating and preparation method thereof |
| US10414859B2 (en) * | 2014-08-20 | 2019-09-17 | Resinate Materials Group, Inc. | High recycle content polyester polyols |
| CN111662634A (en) * | 2020-06-24 | 2020-09-15 | 广东达尔新型材料有限公司 | Thin-coating type water-based anti-static polyurethane mortar floor coating and preparation method thereof |
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2021
- 2021-03-12 CN CN202110271489.6A patent/CN112980319B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102757722A (en) * | 2012-07-13 | 2012-10-31 | 江苏博特新材料有限公司 | Bi-component polyurethane coating and preparation method thereof |
| US10414859B2 (en) * | 2014-08-20 | 2019-09-17 | Resinate Materials Group, Inc. | High recycle content polyester polyols |
| CN111662634A (en) * | 2020-06-24 | 2020-09-15 | 广东达尔新型材料有限公司 | Thin-coating type water-based anti-static polyurethane mortar floor coating and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116144255A (en) * | 2022-11-29 | 2023-05-23 | 海口正宇企业管理咨询服务有限公司 | Antistatic waterborne polyurethane mortar terrace material and preparation method thereof |
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