CN111269649B - Terrace coating prepared by degrading and recycling materials through polyurethane waste materials and method - Google Patents
Terrace coating prepared by degrading and recycling materials through polyurethane waste materials and method Download PDFInfo
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- CN111269649B CN111269649B CN202010252627.1A CN202010252627A CN111269649B CN 111269649 B CN111269649 B CN 111269649B CN 202010252627 A CN202010252627 A CN 202010252627A CN 111269649 B CN111269649 B CN 111269649B
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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
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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
- 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
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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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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- Engineering & Computer Science (AREA)
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- Polyurethanes Or Polyureas (AREA)
Abstract
The floor coating is prepared by mixing a component A and a component B according to the mass ratio of 2-4: 1: the component A comprises polyurethane degradation product modified resin, coloring pigment, filler, dispersant, molecular sieve activated powder, anti-settling agent, flatting agent defoamer and catalyst; the component B is curing agent isocyanate; the invention also discloses a method for preparing the floor coating by using the waste polyurethane degradation recycled material. The waste polyurethane degradation recovery material is modified to realize waste utilization, so that the environmental pollution can be improved, and the production cost can be reduced; in addition, the preparation method has no harmful gas emission, is environment-friendly, and the obtained product has high purity and solid content of 100 percent; the paint film formed by the floor coating disclosed by the invention is high in hardness, good in toughness, and excellent in wear resistance and chemical resistance.
Description
Technical Field
The invention relates to a terrace coating and a preparation method thereof, in particular to a terrace coating prepared by utilizing waste polyurethane degradation recycled materials and a preparation method thereof.
Background
Polyurethane is a synthetic resin material with various product forms and wide application, and is widely applied to the fields of textile clothing, synthetic leather, furniture, medical treatment and health, sports, buildings and the like. However, with the widespread use of polyurethane materials, old and waste polyurethane materials that are produced over time also become new solid contaminants.
The recovery of polyurethane materials is mainly divided into two categories of physical recovery and chemical recovery, wherein the physical recovery mainly comprises the steps of crushing waste materials, and preparing carpet backing, sound insulation materials or foaming fillers by bonding molding or hot press molding, and the type and the treatment capacity of the waste materials which can be used by a physical recovery method are not high; while chemical recovery is mainly by alcoholysis, amination or other degradation methods. Most of polyurethane recovery materials can be degraded by a chemical method, and the materials recovered by the degradation method can be used as raw materials for preparing polyurethane materials.
At present, an effective scheme for applying the polyurethane degradation recycled material to the floor finish paint does not exist, the performance of the prepared floor paint can meet the national standard requirements, and the preparation method is simple and easy to implement in construction application.
Disclosure of Invention
The invention aims to solve the technical problem of providing the floor coating prepared by utilizing the waste polyurethane degradation recovery material, which has the advantages of low raw material cost, high drying speed of a paint film, excellent performance and better chemical resistance.
The invention further aims to solve the technical problem of providing a preparation method of the floor coating, which has simple process and low cost and is suitable for industrial production.
The technical scheme adopted by the invention for solving the technical problems is as follows: a terrace coating prepared by using waste polyurethane degradation recycled materials is prepared by mixing a component A and a component B; the mass ratio of the component A to the component B is 2-4: 1; the component A comprises waste polyurethane degradation recovery material modified resin, coloring pigment, filler, dispersant, molecular sieve activated powder, anti-settling agent, leveling agent, defoaming agent and catalyst; the component B is curing agent isocyanate.
The component A in the coating is mainly used as a base material, the modified resin of a waste polyurethane degradation recovery material is added to be used as a crosslinking film-forming material, the molecular sieve activating powder can absorb residual moisture in the component A, the subsequent reaction can be better carried out, and the drying speed of a paint film at different temperatures can be adjusted by controlling the dosage of the catalyst; the component B is mainly used as a curing agent, the main component is preferably diphenylmethane-4, 4-diisocyanate (MDI) or Toluene Diisocyanate (TDI), and the modified curing agent and the waste polyurethane degradation recovery material modified resin in the component A can react at a stable speed by reacting with the polyester prepolymer under certain reaction conditions to obtain a proper active functional group.
Preferably, the component A comprises the following raw materials in parts by weight: 45-60 parts of waste polyurethane degradation recovery material modified resin, 3-14 parts of coloring pigment, 30-40 parts of filler, 0.5-1 part of dispersing agent, 1-5 parts of molecular sieve activated powder, 0.3-0.5 part of anti-settling agent, 0.2-0.5 part of flatting agent, 1-1.5 parts of defoaming agent and 0.1-0.2 part of catalyst; 25-50 parts of curing agent isocyanate in the component B. The various raw materials are in the weight ratio range, and various indexes of the product performance are optimal.
Preferably, the waste polyurethane degradation recovery material modified resin is prepared by adding n-butanol into a waste polyurethane degradation recovery material and carrying out chemical modification.
Preferably, the catalyst is one or more of zinc naphthenate, cobalt naphthenate and lead naphthenate.
Preferably, the curing agent isocyanate is one or two of modified diphenylmethane-4, 4-diisocyanate (MDI) or modified Toluene Diisocyanate (TDI).
Preferably, the coloring pigment is one or more of high pigment carbon black, rutile type titanium white, lemon yellow or phthalocyanine blue; the filler is preferably one or more of quartz powder, talcum powder or barium sulfate; the dispersant is preferably one or more of BYK-110, BYK-161, BYK-163 and BYK-P104S produced by Pico company; the anti-settling agent is preferably degussa R972; the molecular sieve activating powder is one or more of 3A molecular sieve activating powder of Grace company and 3A molecular sieve activating powder produced by Jiangxixxin pottery science and technology Limited company; the flatting agent is preferably one or more of 454, 458, 584 and 531 produced by Shanghai Shaoyang; the defoaming agent is preferably one or more of EFKA-2722, EFKA-2035, EFKA-2723 produced by BASF corporation and 263N, 266 and 268 produced by Shanghai Shaoyin;
the technical scheme adopted for further solving the technical problems is as follows: a preparation method of an terrace coating comprises the following steps:
(1) preparing modified resin of waste polyurethane degradation recovery material: adding the waste polyurethane degradation recovery material and n-butyl alcohol into a reaction kettle according to the mass ratio of 2-2.5: 1, heating under a uniform stirring state until the hydroxyl value reaches 3.0-3.3%, preserving heat, vacuumizing, cooling, and filtering to obtain waste polyurethane degradation recovery material modified resin;
(2) preparing a component A: mixing resin obtained by modifying waste polyurethane degradation recycled materials, coloring pigment, filler, dispersant, anti-settling agent and molecular sieve activated powder, dispersing, grinding into slurry by using a sand mill, adding leveling agent and catalyst into the slurry for blending, and filtering to obtain a component A;
(3) preparing a component B: adding isocyanate and a polyester prepolymer into a reaction kettle, heating the mixture under a uniform stirring state, carrying out heat preservation reaction until the mass percentage of isocyanate reaches 11-13%, cooling, uniformly stirring, and filtering to obtain a component B;
(4) and (3) mixing the component A obtained in the step (2) and the component B obtained in the step (3) according to the mass ratio of 2-4: 1, and uniformly stirring to obtain the coating.
In the step (1) of the preparation method of the terrace coating, the proportion of the waste polyurethane degradation recovery material and the n-butanol is controlled mainly to ensure that the hydroxyl value of the final modified product is in a control range; the hydroxyl value of the modified resin of the waste polyurethane degradation recovery material is detected to judge whether the modification reaction of the waste polyurethane degradation recovery material and n-butyl alcohol is complete. Firstly, monohydric alcohol is added to control the hydroxyl value of the waste polyurethane degradation recovery material within a certain range, so that the reaction speed of the modified resin of the waste polyurethane degradation recovery material and the curing agent isocyanate is controlled when the component A and the component B are mixed in the step (4), and the later construction is easy to carry out; in addition, in the step (3), the purpose of detecting the mass percentage of the isocyanic acid radical is to judge whether the reaction of the isocyanate and the polyester prepolymer is complete, and the purpose of adding the isocyanate and the polyester prepolymer firstly is to allow the two raw materials to react fully and efficiently.
Preferably, in the step (1), the rotation speed of the uniform stirring is 120-180 r/min, and if the stirring speed is too low, the materials cannot be uniformly mixed and sufficiently reacted, and if the stirring speed is too high, the materials can splash.
Preferably, in the step (1), the heating temperature is 150 +/-5 ℃, and if the heating temperature is too high, the material can be caused to self-polymerize, so that the product quality is influenced. If the heating temperature is too low, the reaction of the raw materials is incomplete.
Preferably, in the step (1), the vacuum-pumping time for heat preservation is 1h, and the vacuum-pumping pressure is 300-500 Pa. The heat preservation is mainly used for ensuring the complete reaction, and the vacuumizing is used for taking away raw materials and some small molecular substances generated in the reaction process. Cooling to a temperature of 50 +/-5 ℃. At which temperature filtration packaging is facilitated.
Preferably, in the step (2), the dispersing speed is 800-1200 r/min, and the dispersing time is 30-60 min; if the dispersion speed is too low, the dispersion effect is poor; if the dispersion speed is too high, the temperature of the raw materials rises, solvent volatilization is accelerated, and product quality problems and environmental pollution are caused. If the dispersion time is too short, the product is not uniformly mixed, and the product quality problem is caused; if the dispersion time is too long, energy waste is caused, and the production efficiency is reduced.
Preferably, in the step (2), the grinding is carried out until the fineness is less than or equal to 50 mu m.
Preferably, in the step (2), the blending speed is 300-500 r/min, and the blending time is 20-30 min; if the blending speed is too low, the dispersion effect is poor; if the blending speed is too high, the temperature of the raw materials rises, and the product quality is affected. If the blending time is too short, the product is not uniformly mixed, and the product quality problem is caused; if the mixing time is too long, the slurry can absorb excessive moisture in the air to influence the quality, and the energy is wasted, so that the production efficiency is reduced.
Preferably, in the step (2), the filtration is performed by using 80-mesh copper cloth.
Preferably, in the step (3), the rotation speed of the uniform stirring is 120-180 r/min; if the stirring speed is too low, the time for uniformly mixing the raw materials is prolonged, so that the time for complete reaction is prolonged; if the stirring speed is too high, the shearing force is increased, the temperature of the raw materials is increased, and isocyanate is self-polymerized, thereby affecting the product quality.
Preferably, in the step (3), the heating temperature is 80 +/-3 ℃, and if the heating temperature is too low, the reaction of the raw materials is incomplete; if the heating temperature is too high, the isocyanate may be caused to self-polymerize, thereby affecting the product quality.
Preferably, in the step (3), the time of the heat preservation reaction is 2-4 h; if the heat preservation time is too short, the raw materials are not reacted completely; if the heat preservation time is too long, energy waste is caused, and the production efficiency is influenced.
Preferably, in step (3), the temperature of cooling is room temperature.
The terrace coating prepared by the waste polyurethane degradable recycled material can be directly troweled and coated on the treated ground, the coating has strong bonding force to a cement substrate, the drying speed is high, the chemical resistance is good, and good decoration and protection effects can be provided for the ground; the coating has the advantages that the thickness of a one-time film can reach 1mm, the construction efficiency is high, and the requirement of operation on a construction site can be well met; the coating disclosed by the invention can be used for efficiently and repeatedly utilizing the waste polyurethane recovery material, waste is changed into valuable, and the terrace product is 100% solid and belongs to an environment-friendly type; compared with the solvent-free polyurethane floor coating of the same type, the solvent-free polyurethane floor coating has the same performance, but the product has lower cost, so the product has wide market prospect; the preparation method of the terrace coating is simple to operate, has low cost and is suitable for industrial production.
Detailed Description
The present invention will be further described with reference to the following examples.
The waste polyurethane degradation recovery material used in the embodiment of the invention is purchased from New materials of Zhixin ester industry, Inc. in Hunan, and is subjected to chemical modification treatment to obtain modified resin of the waste polyurethane degradation recovery material; the used coloring pigment carbon black MA-100 is purchased from Mitsubishi chemical industry of Japan, and the titanium white 2377 is purchased from Shandongjia; the dispersants BYK-110 and BYK-163 used were purchased from Pico; the anti-settling agent used R972 was purchased from degussa; the used filler powder quartz is purchased from Liuyang golden horse, the talcum powder calcium is purchased from Jiangxi Ott, and the barium sulfate is purchased from Qingdao; the 3A molecular sieve activating powder was purchased from grice; antifoaming agents EFKA2722 and EFKA2035 are purchased from Basff, antifoaming agents 263N and 268 are purchased from Shanghai Yingjie, and leveling agents 454, 458, 584 and 531 are purchased from Shanghai Yingjie; catalysts of zinc naphthenate, cobalt naphthenate, lead naphthenate and copper naphthenate are purchased from Haimenlider; the isocyanate MDI used is purchased from Wanhua chemistry, TDI is purchased from Shanghai Kesi Chun; the used polyester prepolymer is purchased from New materials Co., Ltd in the West Credit ester industry of Hunan province;
the chemical reagents used in the examples of the present invention, unless otherwise specified, are commercially available in a conventional manner.
Examples 1 to 3
Examples 1 to 3 of floor coatings prepared from waste polyurethane-degradable recycled materials
The weight parts of the raw materials are shown in table 1:
TABLE 1 weight part table of each raw material of examples 1 to 3 of floor coating prepared by using waste polyurethane degradation recycled material
Note: in the table, "-" indicates no addition.
Preparation of floor coating example 1
(1) Preparing modified resin of waste polyurethane degradation recovery material: adding the waste polyurethane degradation recovery material and n-butanol into a reaction kettle according to the mass ratio of 2.5: 1, heating to 150 ℃ under the condition of uniform stirring at 150r/min, reacting until the hydroxyl value reaches 3.3%, preserving heat, vacuumizing for 1h under the pressure of 400Pa, cooling to 50 ℃, and filtering to obtain the waste polyurethane degradation recovery material modified resin;
(2) preparing a component A: according to the weight parts of the components of the floor coating shown in the table 1, firstly, mixing resin obtained by modifying a waste polyurethane degradation recovery material, coloring pigment, filler, a dispersing agent, an anti-settling agent and molecular sieve activation powder, dispersing for 40min at 800r/min, then grinding to the fineness of 50 mu m by using a sand mill to obtain slurry, then adding a leveling agent and a catalyst into the slurry, blending for 20min at 350r/min, and filtering by using 80-mesh copper cloth to obtain a component A;
(3) preparing a component B: firstly, adding isocyanate and a polyester prepolymer into a reaction kettle, heating to 83 ℃ under uniform stirring at 180r/min, carrying out heat preservation reaction for 4 hours until the mass percentage of isocyanate reaches 11.5%, cooling to 25 ℃, and filtering to obtain a component B;
(4) and (3) mixing the component A obtained in the step (2) and the component B obtained in the step (3) according to the mass ratio of 2: 1, and uniformly stirring to obtain the adhesive.
Preparation method of floor coating example 2
(1) Preparing modified resin of waste polyurethane degradation recovery material: adding the waste polyurethane degradation recovery material and n-butanol into a reaction kettle according to the mass ratio of 2.2: 1, heating to 145 ℃ under the condition of uniform stirring at 150r/min, reacting until the hydroxyl value reaches 3.1%, preserving heat, vacuumizing for 1h under the air pressure of 300Pa, cooling to 50 ℃, and filtering to obtain the waste polyurethane degradation recovery material modified resin;
(2) preparing a component A: according to the weight parts of the components of the floor coating shown in the table 1, firstly, mixing resin obtained by modifying a waste polyurethane degradation recovery material, coloring pigment, filler, a dispersing agent, an anti-settling agent and molecular sieve activation powder, dispersing for 45min at 1000r/min, then grinding to the fineness of 35 mu m by using a sand mill to obtain slurry, then adding a leveling agent and a catalyst into the slurry, blending for 25min at 400r/min, and filtering by using 80-mesh copper cloth to obtain a component A;
(3) preparing a component B: firstly, adding isocyanate and a polyester prepolymer into a reaction kettle, stirring and heating to 80 ℃ at a constant speed at 140r/min, carrying out heat preservation reaction for 3 hours until the mass percentage content of the isocyanate reaches 13%, cooling to 25 ℃, and filtering to obtain a component B curing agent;
(4) and (3) mixing the component A obtained in the step (2) and the component B obtained in the step (3) according to the mass ratio of 3: 1, and uniformly stirring to obtain the adhesive.
Preparation method of floor coating example 3
(1) Preparing modified resin of waste polyurethane degradation recovery material: adding the waste polyurethane degradation recovery material and n-butanol into a reaction kettle according to the mass ratio of 2: 1, heating to 155 ℃ under the condition of uniform stirring at 150r/min, reacting until the hydroxyl value reaches 3%, preserving heat, vacuumizing for 1h under the air pressure of 500Pa, cooling to 50 ℃, and filtering to obtain the waste polyurethane degradation recovery material modified resin;
(2) preparing a component A: according to the weight parts of the components of the floor coating shown in the table 1, firstly, mixing resin obtained by modifying a waste polyurethane degradation recovery material, coloring pigment, filler, a dispersing agent, an anti-settling agent and molecular sieve activation powder, dispersing for 30min at 1200r/min, then grinding to the fineness of 45 mu m by using a sand mill to obtain slurry, then adding a leveling agent and a catalyst into the slurry, blending for 30min at 500r/min, and filtering by using 80-mesh copper cloth to obtain a component A;
(3) preparing a component B: firstly, adding isocyanate and a polyester prepolymer into a reaction kettle, stirring and heating to 78 ℃ at a constant speed at 120r/min, preserving heat for reaction for 2 hours until the mass percentage of isocyanate reaches 12.5%, cooling to 24 ℃, and filtering to obtain a component B;
(4) and (3) mixing the component A obtained in the step (2) and the component B obtained in the step (3) according to the mass ratio of 4:1, and uniformly stirring to obtain the adhesive.
The floor coatings obtained in examples 1-3 and the solvent-free polyurethane floor coatings produced in the prior art are respectively and uniformly applied on the ground with the epoxy intermediate putty applied thereon by troweling, and the coating film thickness (dry film) of the coatings of examples 1-3 and the comparative example is about 1 mm. The actual measurement results of the technical index requirements specified in 5.2.2 in the national standard GB22374-2018 terrace coating material and the coating film performances of the coatings of the embodiments 1-3 and the comparative example 1 are shown in Table 2.
Table 2 actual measurement results of coating film performances of terrace coatings obtained in examples 1-3 and coatings obtained in comparative example 1
As can be seen from Table 2, compared with comparative examples, the coating prepared in the embodiments 1 to 3 of the present invention has better drying speed, wear resistance and bonding strength; the coating also has higher solid content and lower VOC content, and belongs to an environment-friendly product; meanwhile, the coating has good impact resistance, water resistance and chemical medium resistance. The product construction performance is as simple and convenient as that of normal thick coating type terrace paint.
The three coatings in the embodiments 1-3 of the invention are respectively constructed in garages of residential areas, no smell is generated in the construction process, and the floor is smooth and clean after the floor construction is finished, thereby having good decorative and protective properties. After the ground is used for one year, the coating is still flat and smooth and has no obvious scratch and abrasion.
Claims (17)
1. A terrace coating prepared by utilizing waste polyurethane degradation recycled materials is characterized by being prepared by mixing a component A and a component B; the mass ratio of the component A to the component B is 2-4: 1; the component A comprises waste polyurethane degradation recovery material modified resin, coloring pigment, filler, dispersant, molecular sieve activated powder, anti-settling agent, leveling agent, defoaming agent and catalyst; the component B is a modified curing agent which is prepared by reacting isocyanate and a polyester prepolymer; the waste polyurethane degradation recovery material modified resin is prepared by adding n-butyl alcohol into a waste polyurethane degradation recovery material and carrying out chemical modification.
2. The floor coating prepared by using the waste polyurethane degradation recycled material as claimed in claim 1, wherein the component A comprises the following raw materials in parts by weight: 45-60 parts of waste polyurethane degradation recovery material modified resin, 3-14 parts of coloring pigment, 30-40 parts of filler, 0.5-1 part of dispersing agent, 1-5 parts of molecular sieve activated powder, 0.3-0.5 part of anti-settling agent, 0.2-0.5 part of flatting agent, 1-1.5 parts of defoaming agent and 0.1-0.2 part of catalyst; the component B is 25-50 parts.
3. The floor coating prepared by using the waste polyurethane degradation recycled material as claimed in claim 1 or 2, wherein the catalyst is one or more of zinc naphthenate, cobalt naphthenate and lead naphthenate.
4. The floor coating prepared by using the waste polyurethane degradation recycled material as claimed in claim 1 or 2, wherein the isocyanate is one or both of diphenylmethane-4, 4-diisocyanate or toluene diisocyanate.
5. The floor coating prepared by using the waste polyurethane degradation recycled material as claimed in claim 3, wherein the isocyanate is one or two of diphenylmethane-4, 4-diisocyanate or toluene diisocyanate.
6. The floor coating prepared by using the waste polyurethane degradation recycled material as claimed in claim 1 or 2, wherein the coloring pigment is one or more of high pigment carbon black, rutile type titanium white, lemon yellow or phthalocyanine blue.
7. The floor coating prepared by using the waste polyurethane degradation recycled material as claimed in claim 6, wherein the filler is one or more of powdered quartz, talcum powder or barium sulfate.
8. The floor coating prepared by using the waste polyurethane degradation recycled material as claimed in claim 6, wherein the dispersing agent is one or more of BYK-110, BYK-161, BYK-163 and BYK-P104S manufactured by Pico.
9. The floor coating prepared by utilizing the waste polyurethane degradation recovery material as claimed in claim 6, wherein the anti-settling agent is degussa R972.
10. The floor coating prepared by using the waste polyurethane degradation and recovery material as claimed in claim 6, wherein the molecular sieve activation powder is one or more of 3A molecular sieve activation powder of Grace corporation and 3A molecular sieve activation powder produced by Jiangxixxin pottery science and technology Limited.
11. The floor coating prepared by using the waste polyurethane degradation and recovery material as claimed in claim 6, wherein the leveling agent is one or more of 454, 458, 584 and 531 in Shanghai Shaojian production.
12. The floor coating prepared by using the waste polyurethane degradation recycled materials as claimed in claim 6, wherein the defoaming agent is one or more of EFKA-2722, EFKA-2035 and EFKA-2723 produced by BASF corporation, and 263N, 266 and 268 produced by Shanghai Yingjie.
13. The preparation method of the floor coating prepared by the waste polyurethane degradation recovery material according to any one of claims 1 to 12, which is characterized by comprising the following steps:
(1) preparing modified resin of waste polyurethane degradation recovery material: adding the waste polyurethane degradation recovery material and n-butyl alcohol into a reaction kettle according to the mass ratio of 2-2.5: 1, heating under a uniform stirring state until the hydroxyl value reaches 3.0-3.3%, preserving heat, vacuumizing, cooling, and filtering to obtain waste polyurethane degradation recovery material modified resin;
(2) preparing a component A: mixing resin obtained by modifying waste polyurethane degradation recycled materials, coloring pigment, filler, dispersant, anti-settling agent and molecular sieve activated powder, dispersing, grinding into slurry, adding leveling agent and catalyst into the slurry, blending and filtering to obtain a component A;
(3) preparing a component B: adding isocyanate and a polyester prepolymer into a reaction kettle, heating under a uniform stirring state, carrying out heat preservation reaction until the mass percentage of the isocyanate reaches 11-13%, cooling, uniformly stirring, and filtering to obtain a component B;
(4) and (3) mixing the component A obtained in the step (2) and the component B obtained in the step (3) according to the mass ratio of 2-4: 1, and uniformly stirring to obtain the coating.
14. The preparation method of the floor coating according to claim 13, wherein in the step (1), the rotation speed of the uniform stirring is 120-180 r/min, and the heating temperature is 150 ± 5 ℃; the heat preservation and vacuum pumping time is 1h, the vacuum pumping pressure is 300-500Pa, and the temperature is cooled to 50 +/-5 ℃.
15. The preparation method of the floor coating according to claim 13 or 14, wherein in the step (2), the dispersing speed is 800-1200 r/min, and the dispersing time is 30-60 min; grinding to fineness of less than or equal to 50 mu m; the blending speed is 300-500 r/min, and the blending time is 20-30 min; the filtration is carried out by using 80-mesh copper cloth.
16. The preparation method of the floor coating according to claim 13 or 14, wherein in the step (3), the rotation speed of the uniform stirring is 120-180 r/min; the heating temperature is 80 +/-3 ℃, and the heat preservation reaction time is 2-4 h; the temperature of the cooling is room temperature.
17. The preparation method of the floor coating according to claim 15, wherein in the step (3), the rotation speed of the uniform stirring is 120-180 r/min; the heating temperature is 80 +/-3 ℃, and the heat preservation reaction time is 2-4 h; the temperature of the cooling is room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010252627.1A CN111269649B (en) | 2020-04-01 | 2020-04-01 | Terrace coating prepared by degrading and recycling materials through polyurethane waste materials and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010252627.1A CN111269649B (en) | 2020-04-01 | 2020-04-01 | Terrace coating prepared by degrading and recycling materials through polyurethane waste materials and method |
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| Publication Number | Publication Date |
|---|---|
| CN111269649A CN111269649A (en) | 2020-06-12 |
| CN111269649B true CN111269649B (en) | 2021-11-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE19917934A1 (en) * | 1998-04-16 | 1999-12-09 | Gerhard Behrendt | Process for the production of polyurethane foams from recycled polyols |
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| CN103275349A (en) * | 2013-06-18 | 2013-09-04 | 上海第二工业大学 | Method for recycling polyols from waste polyurethane materials |
| CN105860000B (en) * | 2016-04-12 | 2019-03-26 | 广州聚天化工科技有限公司 | A kind of water-repellent paint performed polymer and its preparation method and application based on polyurethane degraded product preparation |
| CN105801904B (en) * | 2016-04-13 | 2019-02-01 | 中山大学 | A kind of photocuring timber floor priming paint based on polyurethane degraded product |
| CN107384179A (en) * | 2017-06-22 | 2017-11-24 | 广州秀珀化工涂料有限公司 | A kind of rigid no-solvent type polyurethane gravity flow self-leveling floor coating and preparation method thereof |
| CN109679487A (en) * | 2018-12-28 | 2019-04-26 | 青岛格林沃德新材料科技有限公司 | A kind of plant oil modified polyurethane elastic terrace material and preparation method thereof |
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| DE19917934A1 (en) * | 1998-04-16 | 1999-12-09 | Gerhard Behrendt | Process for the production of polyurethane foams from recycled polyols |
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