CN112876895A - Color-changing floor and preparation method thereof - Google Patents

Color-changing floor and preparation method thereof Download PDF

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Publication number
CN112876895A
CN112876895A CN202110055862.4A CN202110055862A CN112876895A CN 112876895 A CN112876895 A CN 112876895A CN 202110055862 A CN202110055862 A CN 202110055862A CN 112876895 A CN112876895 A CN 112876895A
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color
parts
weight
heating
changing
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Inventor
翟彬
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Anhui Haosen New Material Technology Co ltd
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Anhui Haosen New Material Technology 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/26—Thermosensitive paints
    • 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
    • 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
    • C09D7/48—Stabilisers against degradation by oxygen, light or heat
    • 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
    • C09D7/63—Additives non-macromolecular organic
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Floor Finish (AREA)

Abstract

The invention belongs to the technical field of building material processing, and discloses a color-changing floor and a preparation method thereof. The floor comprises a base material and a thermochromic material coated on the surface of the base material, wherein the thermochromic material comprises 60-80 parts by weight of a core material, 120 parts by weight of a capsule wall material, 750 parts by weight of an aqueous paint 700-750 parts by weight of water 4000-5000 parts by weight of a pH regulator 2-5 parts by weight of a dispersant 2-5 parts by weight of an ultraviolet absorber 0.4-1 part by weight of a dispersant; the core material comprises 0.5-1.5 parts of a color-dissolving agent, 15-20 parts of a color-developing agent and 44.5-58.5 parts of a solvent. According to the invention, the ultraviolet absorbent is added, so that the light resistance of the thermochromic material is effectively improved, and the photochromic floor with more complete performance is prepared.

Description

Color-changing floor and preparation method thereof
Technical Field
The invention belongs to the technical field of building material processing, and particularly relates to a color-changing floor and a preparation method thereof.
Background
With the development of society and the improvement of life quality of people, people put higher demands on the intellectualization and visual sense of decorative materials, such as the desire to obtain a floor capable of changing color along with the change of temperature. The thermochromic material is used as a novel functional material and is coated on the floor, when the surface temperature of the floor rises, the surface color changes, the floor absorbs heat energy from the environment and stores the heat energy in the floor, and the total amount of the stored heat energy is equal to the energy required by changing the color of the floor from the color before color change to the color after color change; after the temperature is reduced, the natural color of the floor is restored, and the floor releases the energy stored in the floor to the surrounding environment, so that the balance of the ambient temperature is adjusted. Therefore, the color-changing floor can meet the visual enjoyment of people and the individual requirements of consumers on decoration materials, and has wide development space.
The water paint has the advantages of high environmental protection, low smell, no danger during operation, no strong pungent smell, plump paint film, glittering and translucent property, good flexibility, water resistance, wear resistance, aging resistance, yellowing resistance, fast drying, convenient use and the like, and can be added with thermochromic materials for brushing the surfaces of indoor and outdoor wooden products such as floors and the like.
In addition, thermochromic materials can be classified by their composition and properties into: inorganic color-changing materials, organic color-changing materials and liquid crystal color-changing materials. The organic thermochromic material has the advantages of changeable and adjustable color, low color change temperature, high color change sensitivity and the like, and is a thermochromic material which is concerned at present. However, when a phenolic substance is used as a color developer in an organic color-changing material, the color-changing agent is poor in oxidation resistance, ultraviolet resistance, light resistance and heat resistance; meanwhile, the color change effect of the ultraviolet light on the thermosensitive dye also influences the light resistance of the thermochromic material.
Therefore, aiming at the aging phenomena of fading and the like of the existing organic thermochromic materials under natural environmental and climatic conditions, the improvement of the light resistance of the thermochromic materials is urgently needed so as to prepare the thermochromic floor with more perfect performance.
Disclosure of Invention
The invention aims to provide a color-changing floor and a preparation method thereof aiming at the defects of the prior art. According to the invention, the ultraviolet absorbent is added, so that the light resistance of the thermochromic material is effectively improved, and the photochromic floor with more complete performance is prepared.
In order to achieve the purpose, the invention provides a color-changing floor which comprises a base material and a thermochromic material coated on the surface of the base material, wherein the thermochromic material comprises 60-80 parts by weight of a core material, 120 parts by weight of a capsule wall material, 750 parts by weight of an aqueous paint 700-750 parts by weight of water 4000-5000 parts by weight of a pH regulator 2-5 parts by weight of a dispersant 2-5 parts by weight of an ultraviolet absorber 0.4-1 part by weight of a dispersant; the core material comprises 0.5-1.5 parts of a color-dissolving agent, 15-20 parts of a color-developing agent and 44.5-58.5 parts of a solvent.
The invention also provides a preparation method of the color-changing floor, which comprises the following steps:
s1: heating the solvent to be in a liquid state, adding the color hiding agent and the color developing agent into the liquid solvent, heating and stirring to obtain the core material;
s2: mixing the core material, the capsule wall material and water to obtain a mixture, and carrying out pH adjustment, stirring, heating and drying on the mixture to obtain a microcapsule mixture;
s3: ultrasonically mixing the microcapsule mixture, the dispersing agent, the ultraviolet light absorber and the water-based paint, and drying to obtain the thermochromic material;
s4: and uniformly coating the thermochromic material on the base material, and drying and curing to obtain the thermochromic floor.
The technical scheme of the invention has the following beneficial effects:
(1) according to the invention, the microcapsule self-repairing technology is combined with the traditional technology for preparing the temperature-sensitive color-changing paint, and the ultraviolet absorbent is added, so that the light resistance of the temperature-sensitive color-changing material is effectively improved, and the color-changing floor with more perfect performance is prepared.
(2) According to the invention, the water-based paint is combined with the microcapsule mixture, so that particle agglomeration is not easily caused, the paint film adhesion of the thermochromic material is improved, and the prepared thermochromic floor does not have the phenomenon of continuous paint film peeling.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention provides a color-changing floor which comprises a base material and a thermochromic material coated on the surface of the base material, wherein the thermochromic material comprises 60-80 parts by weight of a core material, 120 parts by weight of a capsule wall material, 750 parts by weight of an aqueous paint, 5000 parts by weight of water 4000-; the core material comprises 0.5-1.5 parts of a color-dissolving agent, 15-20 parts of a color-developing agent and 44.5-58.5 parts of a solvent.
In the present invention, the color-hiding agent in the core material is an electron donor, and the color-developing agent is an electron acceptor. The oxidation-reduction potentials of the electron donor and the electron acceptor are close to each other, and when the temperature changes, the oxidation-reduction potentials of the electron donor and the electron acceptor are different in relative change degree, so that the direction of the oxidation-reduction reaction changes along with the change of the temperature, and the color of the system changes; the electron donation and acceptance in the reaction are reversibly changed with the temperature change.
According to the present invention, preferably, the ultraviolet light absorber is at least one of 2- (2 ' -hydroxy-5 ' -methylphenyl) benzotriazole, 2-hydroxy-4-methoxybenzophenone, 2- (2 ' -hydroxy-3 ', 5 ' -di-tert-phenyl) -5-chlorobenzotriazole and resorcinol monobenzoate.
According to the invention, preferably, the dispersant is a diester phosphate quaternary ammonium inner salt and/or a pyridylpropane sulfonic acid inner salt.
According to the present invention, preferably, the pH adjusting agent is citric acid crystals.
According to the present invention, preferably, the leuco agent is at least one of crystal violet lactone, heat-sensitive red, heat-sensitive green and heat-sensitive yellow; the color developing agent is at least one of bisphenol A, benzyl p-hydroxybenzoate and 4-hydroxycoumarin; the solvent is at least one of octanol, n-dodecanol, n-tetradecanol, n-hexadecanol, polyvinyl alcohol and polystyrene.
According to the present invention, preferably, the capsule wall material is at least one of polyethylene, polypropylene, polystyrene, polybutadiene, polyisoprene, polyvinyl alcohol, polyether, polyester, polyamide, polyurea, polyurethane and urea resin.
According to the present invention, preferably, the aqueous paint is a polyurethane aqueous varnish.
According to the present invention, preferably, the substrate is solid wood or veneer.
The invention also provides a preparation method of the color-changing floor, which comprises the following steps:
s1: heating the solvent to be in a liquid state, adding the color hiding agent and the color developing agent into the liquid solvent, heating and stirring to obtain the core material;
s2: mixing the core material, the capsule wall material and water to obtain a mixture, and carrying out pH adjustment, stirring, heating and drying on the mixture to obtain a microcapsule mixture;
s3: ultrasonically mixing the microcapsule mixture, the dispersing agent, the ultraviolet light absorber and the water-based paint, and drying to obtain the thermochromic material;
s4: and uniformly coating the thermochromic material on the base material, and drying and curing to obtain the thermochromic floor.
According to the invention, preferably, the heating of the step S1 is water bath heating, the heating temperature is 50-70 ℃, and the heating time is 15-45 min; the stirring speed of the step S1 is 800-900 r/min.
According to the present invention, it is preferable that the stirring rate of step S2 is 150-200 r/min; the heating of the step S2 is water bath heating, the heating temperature is 60-65 ℃, and the heating time is 2.5-3.5 h; the pH value of the mixture after pH adjustment is 3.5-4, the drying temperature is 85-105 ℃, and the drying time is 1.5-2.5 h.
According to the present invention, preferably, in step S3, the ultrasonic mixing is performed at a frequency of 35 to 45kHz, at a temperature of 70 to 80 ℃ and for a time of 1 to 2 hours.
According to the present invention, preferably, in step S4, the temperature of the drying and curing process is 30-45 ℃ for 1-2 h.
The present invention is specifically illustrated by the following examples.
Each of the substances used in the present invention is commercially available.
Example 1
The embodiment provides a color-changing floor which comprises a base material and a thermochromic material coated on the surface of the base material, wherein the thermochromic material comprises 60 parts by weight of a core material, 100 parts by weight of urea-formaldehyde resin, 750 parts by weight of polyurethane water-based varnish, 4500 parts by weight of water, 4 parts by weight of citric acid crystals, 3 parts by weight of phosphoric acid diester quaternary ammonium inner salt and 0.8 part by weight of resorcinol monobenzoate; the core material comprises 1 part of crystal violet lactone, 14 parts of bisphenol A and 45 parts of polyvinyl alcohol. The base material is a single plate.
Example 2
The embodiment provides a color-changing floor which comprises a base material and a thermochromic material coated on the surface of the base material, wherein the thermochromic material comprises 60 parts by weight of a core material, 110 parts by weight of polyurethane, 750 parts by weight of polyurethane water-based varnish, 4500 parts by weight of water, 4 parts by weight of citric acid crystals, 4 parts by weight of phosphoric acid diester quaternary ammonium inner salt and 0.8 part by weight of 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole; the core material comprises 1 part of thermosensitive red, 14 parts of benzyl p-hydroxybenzoate and 45 parts of n-dodecanol. The base material is a single plate.
Example 3
The embodiment provides a preparation method of a color-changing floor, which comprises the following steps:
s1: heating the solvent to be in a liquid state, adding the color hiding agent and the color developing agent into the liquid solvent, heating in a water bath at 60 ℃, and stirring at 850r/min for 25min to obtain the core material;
s2: mixing the core material, the capsule wall material and water to obtain a mixture, adjusting the pH of the mixture to 3, stirring, heating and drying the mixture to obtain a microcapsule mixture; the stirring speed is 150 r/min; the heating is water bath heating, the heating temperature is 65 ℃, and the heating time is 3 h; the drying temperature is 85 ℃, and the drying time is 1.5 h.
S3: ultrasonically mixing the microcapsule mixture, the dispersing agent, the ultraviolet light absorber and the water-based paint, and drying to obtain the thermochromic material; the ultrasonic mixing frequency is 40kHz, the temperature is 70 ℃, and the time is 1 h.
S4: and uniformly coating the thermochromic material on the base material, and drying and curing to obtain the thermochromic floor. The temperature of the drying and curing treatment is 45 ℃ and the time is 2 h.
Comparative example 1
The comparative example provides a color-changing floor which comprises a base material and a thermochromic material coated on the surface of the base material, wherein the thermochromic material comprises 60 parts by weight of a core material, 100 parts by weight of urea-formaldehyde resin, 750 parts by weight of polyurethane water-based varnish, 4500 parts by weight of water, 4 parts by weight of citric acid crystals and 3 parts by weight of phosphoric acid diester quaternary ammonium inner salt; the core material comprises 1 part of crystal violet lactone, 14 parts of bisphenol A and 45 parts of polyvinyl alcohol. The base material is a single plate.
Comparative example 2
The comparative example provides a color-changing floor which comprises a base material and a thermochromic material coated on the surface of the base material, wherein the thermochromic material comprises 750 parts of polyurethane water-based varnish, 4500 parts of water, 4 parts of citric acid crystals, 3 parts of phosphoric acid diester quaternary ammonium inner salt, 0.8 part of resorcinol monobenzoate, 1 part of crystal violet lactone, 14 parts of bisphenol A and 45 parts of polyvinyl alcohol in parts by weight. The base material is a single plate.
Comparative example 3
The comparative example provides a color-changing floor which comprises a base material and a thermochromic material coated on the surface of the base material, wherein the thermochromic material comprises 60 parts by weight of a core material, 100 parts by weight of urea-formaldehyde resin, 750 parts by weight of polyurethane water-based varnish, 4500 parts by weight of water, 4 parts by weight of citric acid crystals and 0.8 part by weight of resorcinol monobenzoate; the core material comprises 1 part of crystal violet lactone, 14 parts of bisphenol A and 45 parts of polyvinyl alcohol. The base material is a single plate.
Test example
The test examples respectively test the paint film adhesion and the discoloration temperature of the discoloration floors of examples 1 to 2 and the discoloration floors of comparative examples 1 to 3, and the test results are shown in Table 1. Wherein the paint film adhesion test is carried out according to the method requirements specified in GB/T9286-1998 test for marking and marking the paint film of the colored paint and the varnish; the discoloration temperature measuring step comprises dropping a drop of temperature sensitive discoloration material liquid on a circular qualitative filter paper with a diameter of 25mm, placing on a stainless steel plate heated by a heat source, and measuring the discoloration temperature of the product with an OPTEX point thermometer.
The test example also tests the surface chromaticity of the color-changing floor of the example 1-2 and the color-changing floor of the comparative example 1-3 respectively, the test method refers to GB/T15104-2The temperature is 30 ℃, the test time is 1, 15 and 30 hours respectively, and the test results are shown in table 2. Before and after the test, according to a CIELAB (1976) color system issued by the International Commission on illumination, the surface colorimetry parameters of the color-changing floor before and after the test are measured to obtain a surface colorimetry parameter L before the test* 0、a* 0、b* 0As a base point, the delta L of each test time is obtained by subtracting the surface colorimetry parameters of different test times*、Δa*、Δb*As shown in table 2.
TABLE 1 test results of paint film adhesion and discoloration temperature of color-changing floor
Figure BDA0002900578400000071
Figure BDA0002900578400000081
Table 2 test results of surface chromaticity of color-changing floor
Figure BDA0002900578400000082
According to the test results of table 1, it can be seen that comparative examples 1 and 2 have poor paint film adhesion and are prone to paint film continuous peeling phenomena in the absence of dispersants or capsule wall materials, compared to example 1. The paint film adhesion of the color-changing floorings of examples 1 and 2 was as good as that of the aqueous paint alone, relative to comparative example 3.
According to the test results in table 2, it can be known that the addition of the ultraviolet light absorber to the thermochromic material can effectively improve the light resistance of the color-changeable wood board.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims (10)

1. The color-changing floor is characterized by comprising a base material and a thermochromic material coated on the surface of the base material, wherein the thermochromic material comprises 60-80 parts by weight of a core material, 120 parts by weight of a capsule wall material, 750 parts by weight of an aqueous paint, 5000 parts by weight of water 4000-containing materials, 2-5 parts by weight of a pH regulator, 2-5 parts by weight of a dispersant and 0.4-1 part by weight of an ultraviolet light absorber; the core material comprises 0.5-1.5 parts of a color-dissolving agent, 15-20 parts of a color-developing agent and 44.5-58.5 parts of a solvent.
2. The color-changing floor according to claim 1,
the ultraviolet light absorber is at least one of 2- (2 ' -hydroxy-5 ' -methylphenyl) benzotriazole, 2-hydroxy-4-methoxybenzophenone, 2- (2 ' -hydroxy-3 ', 5 ' -di-tert-phenyl) -5-chlorobenzotriazole and resorcinol monobenzoate;
the dispersant is phosphate diester quaternary ammonium inner salt and/or pyridine propane sulfonic acid inner salt;
the pH regulator is citric acid crystal.
3. The color-changing floor according to claim 1,
the leuco agent is at least one of crystal violet lactone, heat-sensitive red, heat-sensitive green and heat-sensitive yellow;
the color developing agent is at least one of bisphenol A, benzyl p-hydroxybenzoate and 4-hydroxycoumarin;
the solvent is at least one of octanol, n-dodecanol, n-tetradecanol, n-hexadecanol, polyvinyl alcohol and polystyrene;
the capsule wall material is at least one of polyethylene, polypropylene, polystyrene, polybutadiene, polyisoprene, polyvinyl alcohol, polyether, polyester, polyamide, polyurea, polyurethane and urea resin.
4. The color-changing flooring according to claim 1, wherein the water-based paint is a polyurethane water-based varnish.
5. The color-changing flooring according to claim 1, wherein the substrate is solid wood or veneer.
6. The preparation method of the color-changing floor is characterized by comprising the following steps of:
s1: heating the solvent to be in a liquid state, adding the color hiding agent and the color developing agent into the liquid solvent, heating and stirring to obtain the core material;
s2: mixing the core material, the capsule wall material and water to obtain a mixture, and carrying out pH adjustment, stirring, heating and drying on the mixture to obtain a microcapsule mixture;
s3: ultrasonically mixing the microcapsule mixture, the dispersing agent, the ultraviolet light absorber and the water-based paint, and drying to obtain the thermochromic material;
s4: and uniformly coating the thermochromic material on the base material, and drying and curing to obtain the thermochromic floor.
7. The method for preparing the color-changing floor according to claim 6, wherein the heating of the step S1 is water bath heating, the heating temperature is 50-70 ℃, and the heating time is 15-45 min; the stirring speed of the step S1 is 800-900 r/min.
8. The method as claimed in claim 6, wherein the stirring speed of step S2 is 150-200 r/min; the heating of the step S2 is water bath heating, the heating temperature is 60-65 ℃, and the heating time is 2.5-3.5 h; the pH value of the mixture after pH adjustment is 3.5-4, the drying temperature is 85-105 ℃, and the drying time is 1.5-2.5 h.
9. The method for preparing a color-changing floor according to claim 6, wherein in the step S3, the ultrasonic mixing is performed at a frequency of 35 to 45kHz, at a temperature of 70 to 80 ℃ and for a time of 1 to 2 hours.
10. The method for preparing color-changing flooring according to claim 7, wherein the temperature of the drying curing process is 30 to 45 ℃ for 1 to 2 hours in step S4.
CN202110055862.4A 2021-01-15 2021-01-15 Color-changing floor and preparation method thereof Pending CN112876895A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103132682A (en) * 2011-11-30 2013-06-05 中国林业科学研究院木材工业研究所 Temperature-sensitive reversible color-changing floor and manufacturing method thereof
CN104910714A (en) * 2015-06-23 2015-09-16 南昌添丽特实业有限责任公司 Temperature-changeable microcapsule coating and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103132682A (en) * 2011-11-30 2013-06-05 中国林业科学研究院木材工业研究所 Temperature-sensitive reversible color-changing floor and manufacturing method thereof
CN104910714A (en) * 2015-06-23 2015-09-16 南昌添丽特实业有限责任公司 Temperature-changeable microcapsule coating and preparation method thereof

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