An outdoor custom flooring paint and a method of making the same

Abstract

The present application relates to the technical field of paint, and proposes a kind of outdoor customized floor paint and preparation method thereof, the outdoor customized floor paint, including component A and component B, the raw material of component A includes the following weight parts of component: polyaspartic acid prepolymer 85~95 parts, anti-skid filler 10~30 parts, defoaming agent 0.1~0.5 parts, adhesion promoter 3~5 parts, anti-cratering agent 0.1~0.3 parts;Component B includes curing agent 85~95 parts.Through the above technical scheme, the problem of poor anti-skid performance and wear resistance of the outdoor customized floor paint in the related art is solved.

Description

Technical Field

[0001] This invention relates to the field of coating technology, specifically to a coating for custom outdoor flooring and its preparation method. Background Technology

[0002] Custom flooring, as a key decorative material in the home improvement industry, has always been popular in the market. Typically, custom flooring is more commonly used indoors, with relatively less application outdoors. However, with increasing awareness of environmental protection and safety, slip resistance and wear resistance have become crucial factors for custom flooring. The slip resistance and wear resistance of indoor custom flooring primarily depend on the PVC coating. However, compared to indoor custom flooring, outdoor custom flooring has much stricter requirements for slip resistance and wear resistance. Commonly used PVC coatings are no longer sufficient to meet the demands of outdoor custom flooring in terms of slip resistance and wear resistance. Therefore, developing a slip-resistant and wear-resistant coating for outdoor custom flooring is of great significance in order to expand its application in outdoor environments and meet the demand for slip resistance and wear resistance. Summary of the Invention

[0003] This invention proposes a coating for outdoor custom flooring and its preparation method, which solves the problem of poor anti-slip performance and wear resistance of coatings for outdoor custom flooring in related technologies.

[0004] The technical solution of the present invention is as follows:

[0005] This invention proposes a coating for custom outdoor flooring, comprising component A and component B. The raw materials of component A include the following components in parts by weight: 85-95 parts of polyaspartic acid prepolymer, 10-30 parts of anti-slip filler, 0.1-0.5 parts of defoamer, 3-5 parts of adhesion promoter, and 0.1-0.3 parts of anti-cratering agent.

[0006] Component B includes 85-95 parts of curing agent.

[0007] As a further technical solution, the preparation method of the polyaspartic acid prepolymer includes the following steps:

[0008] S1. The fatty acids, polyacids, polyols and catalyst A of vegetable oil are reacted for the first time to obtain reactant A;

[0009] S2. React the reactant A, alkyl alcohol and catalyst B for a second reaction to obtain reactant B;

[0010] S3. Reactant B and the hindered amine are reacted for a third time to obtain the polyaspartic acid prepolymer.

[0011] In this invention, the preparation method of polyaspartic acid prepolymer is both environmentally friendly and economical, avoiding cumbersome operations and improving the production efficiency of coatings for outdoor custom flooring.

[0012] As a further technical solution, in step S1, by weight, there are 2-6 parts of vegetable oil fatty acids, 40-45 parts of polyacids, 20-25 parts of polyols, and 0.05-0.1 parts of catalyst A.

[0013] As a further technical solution, the fatty acids in the vegetable oil include one of soybean oil, cottonseed oil, sunflower oil, and safflower oil.

[0014] As a further technical solution, the polyacid includes one of maleic anhydride, succinic anhydride, and glutaric anhydride.

[0015] As a further technical solution, the polyol includes one of ethylene glycol, propylene glycol, butanediol, and pentanediol.

[0016] As a further technical solution, the catalyst A includes one of dibutyltin dilaurate, stannous octoate, and tetrabutyl titanate.

[0017] As a further technical solution, the alkyl alcohol includes one of sorbitol, pentaerythritol, glycerol, and neopentyl glycol.

[0018] As a further technical solution, the catalyst B includes one of monobutyltin oxide and dibutyltin oxide.

[0019] As a further technical solution, the sterically hindered amine includes one of alkylamines and etheramines that do not contain a benzene ring.

[0020] In this invention, the fatty acid of the vegetable oil is preferably soybean oil acid; the polyacid is preferably maleic anhydride; the polyol is preferably pentanediol; catalyst A is preferably dibutyltin dilaurate; the alkyl alcohol is preferably sorbitol; catalyst B is preferably dibutyltin oxide; the sterically hindered amine can be selected from alkylamines or ether amines that do not contain benzene rings. Alkylamines that do not contain benzene rings can be selected from n-butylamine, isobutylamine, diethylamine, triethylamine, etc., preferably triethylamine. Ether amines that do not contain benzene rings can be selected from methoxyethylamine, ethoxyethylamine, propylene glycol monomethyl etheramine, etc., preferably ethoxyethylamine.

[0021] As a further technical solution, in step S2, the weight ratio of reactant A, alkyl alcohol, and catalyst B is 1:2~2.5:0.02.

[0022] As a further technical solution, in step S3, the weight ratio of reactant B to sterically hindered amine is 1:2~2.5.

[0023] As a further technical solution, in step S1, the temperature during the first reaction is 60~120℃ and the time is 2~4h.

[0024] As a further technical solution, in step S2, the temperature during the second reaction is 90~120℃ and the time is 2~4h.

[0025] As a further technical solution, in step S3, the temperature during the third reaction is 90~120℃ and the time is 2~3h.

[0026] As a further technical solution, the anti-slip filler includes one of quartz sand, basalt powder, and calcium carbonate.

[0027] As a further technical solution, the defoamer is an organosilicon defoamer.

[0028] As a further technical solution, the adhesion promoter includes one of acrylic resin, epoxy resin, and polyurethane.

[0029] As a further technical solution, the anti-cratering agent includes one of fatty alcohol polyoxyethylene ether, silicone, and cellulose acetate butyrate.

[0030] As a further technical solution, the curing agent includes one or two of polyether-modified aliphatic isocyanates and polyester-modified aliphatic isocyanates.

[0031] In this invention, the anti-slip filler is preferably quartz sand; the addition of a defoamer can maintain the stability of the coating system, and the organosilicon defoamer can be selected from AFE-3168, KS-66, KSZ-108, etc., preferably AFE-3168; the addition of an adhesion promoter can improve interlayer adhesion and make the coating system more stable, preferably acrylic resin; the addition of an anti-cratering agent can make the coating easier to level during construction, reduce construction defects such as sagging and cratering, and improve the smoothness and appearance quality of the coating, preferably fatty alcohol polyoxyethylene ether; by optimizing the type of curing agent, the curing efficiency can be improved, and the curing agent is preferably a mixture of polyether modified aliphatic isocyanate and polyester modified aliphatic isocyanate in a weight ratio of 1:1.

[0032] As a further technical solution, when the anti-slip filler is quartz sand, the quartz sand is modified quartz sand, and the raw materials of the modified quartz sand include quartz sand, sodium stearate and polyvinyl butyral, and the weight ratio of the quartz sand, sodium stearate and polyvinyl butyral is 10~13:0.5:1.5.

[0033] In this invention, the inventors discovered that modifying quartz sand with sodium stearate and polyvinyl butyral can further improve the abrasion resistance of coatings for custom outdoor flooring. It is hypothesized that modification transforms the physical dispersion of quartz sand in the coating into chemical bonding, thereby further enhancing the reinforcing effect of the quartz sand and consequently improving the abrasion resistance of the coating. Furthermore, when the weight ratio of quartz sand, sodium stearate, and polyvinyl butyral is 10-13:0.5:1.5, the abrasion resistance of the coating for custom outdoor flooring can be further improved.

[0034] As a further technical solution, the preparation method of the modified quartz sand includes the following steps:

[0035] A1. Dissolve sodium stearate in water, add quartz sand, impregnate, dehydrate, and obtain the precursor;

[0036] A2. Polyvinyl butyral is dissolved in ethyl acetate, the precursor is added, the mixture is dispersed evenly, and dried to obtain the modified quartz sand.

[0037] In this invention, the quartz sand is first modified with sodium stearate to enrich the surface of the quartz sand with anions, and then modified with polyvinyl butyral to enhance the modification effect, thereby further improving the wear resistance of the coating for outdoor custom flooring.

[0038] This invention also proposes a method for preparing the aforementioned coating for customized outdoor flooring, comprising the following steps:

[0039] B1. Mix the raw materials of component A, degas, and obtain component A;

[0040] B2. Mix component A and component B evenly to obtain a coating for custom outdoor flooring.

[0041] As a further technical solution, the volume ratio of component A to component B is 1:1.

[0042] The working principle and beneficial effects of this invention are as follows:

[0043] In this invention, component A uses polyaspartic acid prepolymer as the main raw material, giving the outdoor custom floor coating excellent anti-slip and wear-resistant properties. Furthermore, the added anti-slip filler can be physically dispersed in the coating, which on the one hand provides excellent anti-slip properties, and on the other hand significantly improves the coating's wear resistance. Detailed Implementation

[0044] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0045] Unless otherwise specified, in the following examples and comparative examples, the particle size of the quartz sand is 45 μm; the particle size of the calcium carbonate is 45 μm; the defoamer is AFE-3168; the adhesion promoter is acrylic resin, model HY1330; the anti-cracking agent is fatty alcohol polyoxyethylene ether, model AEO-15; the polyether-modified aliphatic isocyanate is HI100; the polyester-modified aliphatic isocyanate is SH-2825; and the polyvinyl butyral is Kuraray B20H.

[0046] Example 1

[0047] A method for preparing a coating for custom outdoor flooring includes the following steps:

[0048] B1. By weight, mix 85 parts of polyaspartic acid prepolymer, 10 parts of calcium carbonate, 0.1 parts of defoamer, 3 parts of adhesion promoter, and 0.1 parts of anti-cracking agent, and degas to obtain component A;

[0049] The preparation method of polyaspartic acid prepolymer includes the following steps:

[0050] S1. 2 parts of cottonseed oil acid, 40 parts of succinic anhydride, 20 parts of ethylene glycol and 0.05 parts of stannous octoate were reacted at 60°C for 4 hours to obtain reactant A;

[0051] S2. Reactant A, pentaerythritol and monobutyltin oxide (the weight ratio of reactant A to pentaerythritol and monobutyltin oxide is 1:2:0.02) at 90℃ for 4 hours to obtain reactant B;

[0052] S3. React reactant B and triethylamine (the weight ratio of reactant B to triethylamine is 1:2) at 90℃ for 3 hours to obtain polyaspartic acid prepolymer;

[0053] B2. Mix 42.5 parts of polyether-modified aliphatic isocyanate and 42.5 parts of polyester-modified aliphatic isocyanate to obtain component B. Mix component A and component B evenly at a volume ratio of 1:1 to obtain a coating for custom outdoor flooring.

[0054] Example 2

[0055] A method for preparing a coating for custom outdoor flooring includes the following steps:

[0056] B1. By weight, mix 95 parts of polyaspartic acid prepolymer, 30 parts of quartz sand, 0.5 parts of defoamer, 5 parts of adhesion promoter, and 0.3 parts of anti-cracking agent, and degas to obtain component A;

[0057] The preparation method of polyaspartic acid prepolymer includes the following steps:

[0058] S1. 6 parts soybean oil acid, 45 parts maleic anhydride, 25 parts pentanediol and 0.1 parts dibutyltin dilaurate were reacted at 120℃ for 2 h to obtain reactant A;

[0059] S2. Reactant A, sorbitol and dibutyltin oxide (the weight ratio of reactant A to sorbitol and dibutyltin oxide is 1:2.5:0.02) at 120℃ for 2 hours to obtain reactant B;

[0060] S3. Reactant B and ethoxyethylamine (the weight ratio of reactant B to ethoxyethylamine is 1:2.5) at 120℃ for 2 hours to obtain polyaspartic acid prepolymer;

[0061] B2. Mix 42.5 parts of polyether-modified aliphatic isocyanate and 42.5 parts of polyester-modified aliphatic isocyanate to obtain component B. Mix component A and component B evenly at a volume ratio of 1:1 to obtain a coating for custom outdoor flooring.

[0062] Example 3

[0063] The only difference between this embodiment and Embodiment 2 is that in this embodiment, the quartz sand is modified quartz sand. The preparation method of modified quartz sand includes the following steps: dissolving 0.5 parts of sodium stearate and 1.5 parts of polyvinyl butyral in 40 parts of ethanol at 5°C, adding 28 parts of quartz sand, dispersing evenly, and drying to obtain modified quartz sand.

[0064] Example 4

[0065] The only difference between this embodiment and Embodiment 3 is that, in this embodiment, the preparation method of modified quartz sand includes the following steps:

[0066] A1. Dissolve 1.5 parts of polyvinyl butyral in 40 parts of ethyl acetate, add 28 parts of quartz sand, disperse evenly, and dry to obtain the precursor;

[0067] A2. Dissolve 0.5 parts of sodium stearate in 40 parts of water, add the precursor, impregnate, dehydrate, and obtain modified quartz sand.

[0068] Example 5

[0069] The only difference between this embodiment and Embodiment 3 is that, in this embodiment, the preparation method of modified quartz sand includes the following steps:

[0070] A1. Dissolve 0.5 parts of sodium stearate in 40 parts of water, add 28 parts of quartz sand, impregnate, dehydrate, and obtain the precursor;

[0071] A2. Dissolve 1.5 parts of polyvinyl butyral in 40 parts of ethyl acetate, add the precursor, disperse evenly, and dry to obtain modified quartz sand.

[0072] Example 6

[0073] The only difference between this embodiment and Embodiment 4 is that in this embodiment, the weight parts of sodium stearate are 1.5 parts, the weight parts of polyvinyl butyral are 4.5 parts, and the weight parts of quartz sand are 24 parts.

[0074] Example 7

[0075] The only difference between this embodiment and Embodiment 4 is that in this embodiment, the weight parts of sodium stearate are 1.25 parts, the weight parts of polyvinyl butyral are 3.75 parts, and the weight parts of quartz sand are 25 parts.

[0076] Example 8

[0077] The only difference between this embodiment and Embodiment 4 is that in this embodiment, the weight parts of sodium stearate are 1 part, the weight parts of polyvinyl butyral are 3 parts, and the weight parts of quartz sand are 26 parts.

[0078] Comparative Example 1

[0079] The only difference between this comparative example and Example 1 is that calcium carbonate was not added in this comparative example.

[0080] Experiment Example 1: Anti-slip performance test

[0081] The static friction coefficient of the cured coating film of the outdoor custom flooring coatings prepared in Examples 1-8 was tested using a touchscreen static friction coefficient tester (model YN-DX01). The sample size was 8cm × 20cm, and the total mass of the slider, including the sample, was 200g. The results showed that the static friction coefficient of the cured coating film of the outdoor custom flooring coating was 0.64~0.69. This indicates that the outdoor custom flooring coating prepared by this invention has good anti-slip properties.

[0082] Experimental Example 2: Wear Resistance

[0083] According to GB / T 1768-2006 "Determination of Abrasion Resistance of Paints and Varnishes - Rotating Rubber Grinding Wheel Method", the abrasion resistance of the cured coatings for outdoor custom flooring prepared in Examples 1-8 and Comparative Example 1 was tested. The load was 1 kg, the test rotation was 500 revolutions, and the results were retained to one decimal place.

[0084] The results are shown in Table 1 below.

[0085] Table 1. Test results of wear resistance performance

[0086]

[0087] A comparison between Example 1 and Comparative Example 1 shows that the addition of anti-slip filler can significantly improve the abrasion resistance of the coating. A comparison between Example 2 and Examples 3-8 shows that modifying quartz sand with sodium stearate and polyvinyl butyral can further improve the abrasion resistance of the coating for outdoor custom flooring. A comparison between Example 5 and Examples 3-4 shows that first modifying quartz sand with sodium stearate, and then modifying it with polyvinyl butyral, can further improve the abrasion resistance of the coating for outdoor custom flooring. A comparison between Examples 5-6 and Examples 7-8 shows that when the weight ratio of quartz sand, sodium stearate, and polyvinyl butyral is 10-13:0.5:1.5, the abrasion resistance of the coating for outdoor custom flooring can be further improved.

[0088] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coating for custom outdoor flooring, characterized in that, The product includes component A and component B. Component A comprises the following components in parts by weight: 85-95 parts of polyaspartic acid prepolymer, 10-30 parts of anti-slip filler, 0.1-0.5 parts of defoamer, 3-5 parts of adhesion promoter, and 0.1-0.3 parts of anti-cracking agent; component B comprises 85-95 parts of curing agent. The anti-slip filler includes one of quartz sand, basalt powder, and calcium carbonate; The preparation method of the polyaspartic acid prepolymer includes the following steps: S1. The fatty acids, polyacids, polyols and catalyst A of vegetable oil are reacted for the first time to obtain reactant A; S2. React the reactant A, alkyl alcohol and catalyst B for a second reaction to obtain reactant B; S3. React the reactant B and the hindered amine for a third time to obtain the polyaspartic acid prepolymer; By weight, the composition includes 2-6 parts of vegetable oil fatty acids, 40-45 parts of polyacids, 20-25 parts of polyols, and 0.05-0.1 parts of catalyst A; the vegetable oil fatty acids include one of soybean oil acid, cottonseed oil acid, sunflower oil acid, and safflower oil acid; the polyacid is maleic anhydride; the polyol includes one of ethylene glycol, propylene glycol, butylene glycol, and pentanediol; the alkyl alcohol includes one of sorbitol, pentaerythritol, glycerol, and neopentanediol; the sterically hindered amine includes one of alkylamines without benzene rings and ether amines without benzene rings; the alkylamines without benzene rings are selected from n-butylamine, isobutylamine, and diethylamine; the ether amines without benzene rings are selected from methoxyethylamine and ethoxyethylamine.

2. The coating for custom outdoor flooring according to claim 1, characterized in that, Catalyst A comprises one of dibutyltin dilaurate, stannous octoate, and tetrabutyl titanate; and / or The catalyst B includes one of monobutyltin oxide and dibutyltin oxide.

3. The coating for custom outdoor flooring according to claim 1, characterized in that, In step S2, the weight ratio of reactant A to alkyl alcohol and catalyst B is 1:2~2.5:0.02; and / or In step S3, the weight ratio of reactant B to sterically hindered amine is 1:2~2.

5.

4. The coating for custom outdoor flooring according to claim 1, characterized in that, In step S1, the first reaction is carried out at a temperature of 60-120°C for 2-4 hours; and / or In step S2, the second reaction is carried out at a temperature of 90-120°C for 2-4 hours; and / or In step S3, the third reaction is carried out at a temperature of 90-120°C for 2-3 hours.

5. A coating for custom outdoor flooring according to any one of claims 1 to 4, characterized in that, The defoamer is an organosilicon defoamer; and / or The adhesion promoter includes one of acrylic resin, epoxy resin, and polyurethane; and / or The anti-cratering agent includes one of fatty alcohol polyoxyethylene ether, silicone, and cellulose acetate butyrate; and / or The curing agent includes one or both of polyether-modified aliphatic isocyanate and polyester-modified aliphatic isocyanate.

6. The coating for custom outdoor flooring according to claim 1, characterized in that, When the anti-slip filler is quartz sand, the quartz sand is modified quartz sand. The raw materials of the modified quartz sand include quartz sand, sodium stearate and polyvinyl butyral, and the weight ratio of the quartz sand, sodium stearate and polyvinyl butyral is 10~13:0.5:1.

5.

7. The coating for custom outdoor flooring according to claim 6, characterized in that, The method for preparing the modified quartz sand includes the following steps: A1. Dissolve sodium stearate in water, add quartz sand, impregnate, dehydrate, and obtain the precursor; A2. Polyvinyl butyral is dissolved in ethyl acetate, the precursor is added, the mixture is dispersed evenly, and dried to obtain the modified quartz sand.

8. A method for preparing a coating for custom outdoor flooring according to any one of claims 1 to 7, characterized in that, Includes the following steps: B1. Mix the raw materials of component A, degas, and obtain component A; B2. Mix component A and component B evenly to obtain a coating for custom outdoor flooring.

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