Livable ecological environment-friendly maternal and infant grade decoration material formula and preparation method thereof

Abstract

The invention discloses a livable ecological environment-friendly maternal and infant grade decoration material formula and a preparation method thereof, and belongs to the technical field of building decoration materials. The wood-plastic composite material comprises the following components in parts by weight: 20-60 parts of waterborne polyurethane resin, 5-15 parts of phenolic resin, 10-30 parts of bamboo fibers, 10-20 parts of modified diatomite, 2-5 parts of a glucoside plant extract, 1-3 parts of nano-zinc oxide, 1-3 parts of a natural mildew preventive, 0.5-2 parts of a dispersant and 1-3 parts of a neutralizer and a chain extender, the glucoside plant extract and the nano-zinc oxide have a synergistic effect, and the formaldehyde removal rate is greater than 96%. The TVOC removal rate is larger than 70%, illumination conditions are not needed, water-based resin and natural filler are adopted, the formaldehyde emission is smaller than or equal to 0.05 mg / m, the industrial maternal and infant level standard is met, nano-zinc oxide and a natural mildew preventive are combined, the antibacterial rate is larger than 99.99%, mold growth is inhibited, material waste forms mud when encountering water, heavy metal and harmful chemical substances are not contained, the European Union REACH standard is met, saltpetering is avoided through the alkalescent formula, and the environment-friendly and energy-saving environment-friendly building material is environmentally friendly. No pungent smell exists in the construction process, and health of workers is protected.

Description

Technical Field

[0001] A formula for a livable, eco-friendly, maternal and infant-grade decoration material and a preparation method thereof. The present invention belongs to the technical field of building decoration materials, and specifically relates to the technical field of decoration materials that have both eco-friendly and maternal and infant safety characteristics. Background Art

[0002] Existing decoration materials commonly emit high formaldehyde levels and exceed VOC standards, posing a health risk to sensitive groups like mothers and infants. While touted as environmentally friendly, traditional materials like diatomaceous earth and latex paint still rely on chemical adhesives and highly alkaline fillers, leading to problems such as efflorescence during construction and secondary formaldehyde release. Furthermore, most materials rely on photocatalytic technology for formaldehyde removal, requiring illumination and exhibiting limited TVOC removal capabilities. Therefore, developing a non-toxic, low-volatility, and highly effective formaldehyde-removing decoration material suitable for maternal and infant environments is crucial. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a formula of livable, ecological and environmentally friendly maternal and infant grade decoration and decorative materials and its preparation method, which has the advantages of high efficiency in removing formaldehyde, antibacterial and mildew proof, environmental protection and degradability.

[0004] To achieve the above object, the present invention provides the following technical solutions: A formula for a livable, eco-friendly, maternal and infant-grade decoration material comprises, by weight, 20-60 parts of water-based polyurethane resin, 5-15 parts of phenolic resin, 10-30 parts of bamboo fiber, 10-20 parts of modified diatomaceous earth, 2-5 parts of glycoside plant extract, 1-3 parts of nano zinc oxide, 1-3 parts of a natural mildew inhibitor, 0.5-2 parts of a dispersant, and 1-3 parts of a neutralizer and a chain extender.

[0005] As a preferred technical solution of the present invention, the modified diatomaceous earth is treated with a silane coupling agent (KH-550 and KH-580 are compounded in a ratio of 1:1) and a disodium hydrogen phosphate solution (pH 5.5-6.5), and the feed ratio of the modified diatomaceous earth to the silane coupling agent is 1:1.5-2.5.

[0006] As a preferred technical solution of the present invention, the natural mildew inhibitor is prepared by compounding soapberry fruit (5-10%), chinaberry leaves (20-30%), coptis leaves (10-15%), and isatis indigotica (10-20%), and is prepared by ultrasonic extraction (power 300-500W, time 20-30 minutes).

[0007] As a preferred technical solution of the present invention, the nano zinc oxide has a particle size of 20-30 nm and is mixed with a dispersant (polymer dispersant ZKFS-180) at a ratio of 1:0.5, and is ultrasonically dispersed (power 300 W, time 30 minutes) to form a stable dispersion.

[0008] As a preferred technical solution of the present invention, the formaldehyde emission is ≤0.05 mg / m³ (climate chamber method, GB / T18883-2022), the formaldehyde removal rate is >96% (24-hour test), the TVOC removal rate is >70%, and the antibacterial rate is >99.99% (Staphylococcus aureus).

[0009] As a preferred technical solution of the present invention, the compressive strength is ≥12MPa, the flexural strength is ≥8MPa, it can be degraded into mud when exposed to water, and the heavy metal content is lower than the EU REACH standard limit.

[0010] As a preferred technical solution of the present invention, the glycoside plant extract is a mixture of glucoside and rhamnoside, which is extracted from plant rhizomes by enzymatic hydrolysis and forms a synergistic catalytic system with nano zinc oxide to decompose formaldehyde without light.

[0011] As a preferred technical solution of the present invention, it is suitable for sensitive environments such as mother-child rooms, children's activity areas, hospital wards, etc., and forms a dense antibacterial layer of 0.1-0.3mm on the surface, which can withstand scrubbing times greater than 10,000 times.

[0012] A method for preparing a formula of a livable, eco-friendly, maternal and infant-grade decoration material, wherein the mixing process adopts a variable speed process: the initial speed is 1500-2000 rpm for mixing for 10-15 minutes, then the speed is reduced to 800-1000 rpm and the mixing is continued for 10-15 minutes, while the temperature is controlled at 250-300 ° C. As a preferred technical solution of the present invention, a gradient cooling process is adopted after the hot pressing forming: first, the pressure is maintained at 250°C for 20 minutes, then the temperature is reduced to 100°C at a rate of 5°C / minute, and then naturally cooled to room temperature to improve the density of the material.

[0013] Compared with the prior art, the present invention has the following beneficial effects: glycoside plant extracts and nano zinc oxide work synergistically, with formaldehyde removal rates greater than 96% and TVOC removal rates greater than 70%, without the need for lighting conditions; water-based resins and natural fillers are used, with formaldehyde emission ≤0.05 mg / m³, meeting the industry's maternal and infant grade standards; the combination of nano zinc oxide and natural mildew inhibitors has an antibacterial rate greater than 99.99%, inhibiting mold growth; material waste turns into mud when in contact with water; it does not contain heavy metals and harmful chemicals, meeting EU REACH standards; the weakly alkaline formula avoids efflorescence; there is no irritating odor during the construction process, protecting the health of workers. DETAILED DESCRIPTION

[0014] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0015] The present invention provides a technical solution: Material formula A livable, eco-friendly, maternal and infant-grade decoration material comprises, by weight: 20-60 parts of water-based polyurethane resin, 5-15 parts of phenolic resin, 10-30 parts of bamboo fiber, 10-20 parts of modified diatomaceous earth, 2-5 parts of glycoside plant extract, 1-3 parts of nano zinc oxide, 1-3 parts of natural mildew inhibitor, 0.5-2 parts of dispersant, and 1-3 parts of neutralizer and chain extender.

[0016] The modified diatomaceous earth is treated with a silane coupling agent (KH-550 and KH-580 are mixed in a ratio of 1:1) and a disodium hydrogen phosphate solution (pH 5.5-6.5). The feed ratio of the modified diatomaceous earth to the silane coupling agent is 1:1.5-2.5 to improve the adsorption capacity and compatibility with the resin.

[0017] The natural mildew inhibitor is made from a mixture of soapberry fruit (5-10%), chinaberry leaves (20-30%), coptis chinensis leaves (10-15%), and isatis indigotica (10-20%), and is extracted by ultrasonic extraction (power 300-500W, time 20-30 minutes), which can inhibit the growth of mold.

[0018] Nano zinc oxide has a particle size of 20-30nm and is mixed with a dispersant (polymer dispersant ZKFS-180) at a ratio of 1:0.5. It is then dispersed by ultrasound (power 300W, time 30 minutes) to form a stable dispersion, which synergizes with glycoside plant extracts to decompose formaldehyde and have antibacterial properties.

[0019] A preparation method for a formula of livable, eco-friendly, maternal and infant-grade decoration material 1. Preparation of modified diatomite: Mix diatomite and silane coupling agent in proportion, add disodium hydrogen phosphate solution (pH 5.5-6.5), ultrasonically disperse for 20-30 minutes (power 200-500W), wash with water and dry to obtain modified diatomite.

[0020] 2. Dispersion of nano zinc oxide: Mix nano zinc oxide and dispersant in proportion, add deionized water and ultrasonically disperse for 30 minutes (power 300W) to form a stable dispersion.

[0021] 3. Resin compounding and mixing: Mix water-based polyurethane resin and phenolic resin in proportion, add bamboo fiber, modified diatomaceous earth, glycoside plant extract, natural mildew inhibitor and nano zinc oxide dispersion, and mix at 200-300℃ with variable speed: initially mix at 1500-2000rpm for 10-15 minutes, then reduce to 800-1000rpm and continue mixing for 10-15 minutes.

[0022] 4. Molding and curing: The mixed mold material is loaded into a mold preheated to 250°C and hot-pressed (pressure 20 MPa, heat preservation for 20 minutes). Then, a gradient cooling process is adopted: the temperature is lowered to 100°C at a rate of 5°C / min, and then naturally cooled to room temperature. The finished product is obtained after demolding.

[0023] Application Scenario The material is suitable for sensitive environments such as mother-and-baby rooms, children's activity areas, and hospital wards. It forms a dense antibacterial layer of 0.1-0.3mm on the surface and can withstand scrubbing times greater than 10,000 times. Example

[0024] 1. Preparation of modified diatomite: Take 100g of diatomite, add 150g of silane coupling agent (compound of KH-550 and KH-580) and disodium hydrogen phosphate solution (pH 6.0), ultrasonically disperse for 25 minutes (power 400W), wash with water, and dry for later use.

[0025] 2. Nano zinc oxide dispersion: Mix 2g nano zinc oxide with 1g dispersant, add 50ml deionized water, and disperse under ultrasonication for 30 minutes (power 300W).

[0026] 3. Mixing and Molding: Mix 40g of waterborne polyurethane resin, 10g of phenolic resin, 20g of bamboo fiber, 15g of modified diatomaceous earth, 3g of glycoside plant extract, 1g of soapberry extract, nano-zinc oxide dispersion, 1g of dispersant, and 1g of neutralizer at 250°C for 25 minutes at a variable speed, starting at 1800 rpm and then decreasing to 900 rpm. The mold was hot-pressed (20 MPa, 20 minutes), and the sample was obtained by gradient cooling.

[0027] Comparative Example 1 (unmodified diatomaceous earth) 1. Take 100g of diatomaceous earth and use it directly. The rest of the steps are the same as in Example 1. The test shows that the formaldehyde removal rate drops to 82%, and the material compatibility decreases.

[0028] Comparative Example 2 (no glycoside extract added) 1. Omit the glycoside plant extract, increase the bamboo fiber to 23g, and follow the same steps as in Example 1. The test showed that the formaldehyde removal rate dropped to 65%, and the formaldehyde removal effect decreased significantly under lightless conditions.

[0029] Performance Testing Performance tests were performed on Example 1 and Comparative Examples 1-2, and the results were as follows: project Formaldehyde emission (mg / m³) Formaldehyde removal rate (24h) Antibacterial rate (%) Compressive strength (MPa) Flexural strength (MPa) Example 1 0.03 97.2 ＞99.99 12 8 Comparative Example 1 0.04 82.0 95.6 10 7 Comparative Example 2 0.05 65.3 98.1 11 7.5 The results showed that unmodified diatomaceous earth reduced the adsorption capacity and compatibility of the material, and the absence of glycoside extract significantly reduced the formaldehyde removal effect under lightless conditions, verifying the synergistic effect of the components in the formula of the present invention.

[0030] The decoration and decorative material of the present invention solves the environmental protection and functional defects of existing materials by optimizing the formula and process, meets the environmental safety requirements of mothers and infants, and has broad application prospects.

[0031] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A formula for livable, eco-friendly, maternal and infant grade decoration and decorative materials, characterized by: The invention comprises, by weight, 20-60 parts of waterborne polyurethane resin, 5-15 parts of phenolic resin, 10-30 parts of bamboo fiber, 10-20 parts of modified diatomaceous earth, 2-5 parts of glycoside plant extract, 1-3 parts of nano zinc oxide, 1-3 parts of natural mildew inhibitor, 0.5-2 parts of dispersant, and 1-3 parts of neutralizer and chain extender.

2. The formula of a livable, eco-friendly, maternal and infant grade decoration material according to claim 1, characterized in that: The modified diatomaceous earth is treated with a silane coupling agent (KH-550 and KH-580 are compounded in a ratio of 1:1) and a disodium hydrogen phosphate solution (pH 5.5-6.5), and the feed ratio of the modified diatomaceous earth to the silane coupling agent is 1:1.5-2.

5.

3. The formula of a livable, eco-friendly, maternal and infant-grade decoration material according to claim 1, characterized in that: The natural mildew inhibitor is prepared by compounding soapberry fruit (5-10%), chinaberry leaves (20-30%), coptis leaves (10-15%), and isatis indigotica (10-20%), and is prepared by ultrasonic extraction (power 300-500W, time 20-30 minutes).

4. The formula of a livable, eco-friendly, maternal and infant-grade decoration material according to claim 1, characterized in that: The nano zinc oxide has a particle size of 20-30 nm and is mixed with a dispersant (polymer dispersant ZKFS-180) at a ratio of 1:0.5, and is subjected to ultrasonic dispersion (power 300 W, time 30 minutes) to form a stable dispersion.

5. The method for preparing a formula of a livable, eco-friendly, maternal and infant-grade decoration material according to claim 1, characterized in that: The mixing process adopts a variable speed process: the initial speed is 1500-2000 rpm for mixing for 10-15 minutes, then the speed is reduced to 800-1000 rpm and the mixing is continued for 10-15 minutes, while the temperature is controlled at 250-300°C.

6. The formula of a livable, eco-friendly, maternal and infant-grade decoration material according to claim 1, characterized in that: The formaldehyde emission is ≤0.05mg / m³ (climate chamber method, GB / T18883-2022), the formaldehyde removal rate is >96% (24-hour test), the TVOC removal rate is >70%, and the antibacterial rate is >99.99% (Staphylococcus aureus).

7. The formula of a livable, eco-friendly, maternal and infant-grade decoration material according to claim 1, characterized in that: The compressive strength is ≥12MPa, the flexural strength is ≥8MPa, it can be degraded into mud when in contact with water, and the heavy metal content is lower than the EU REACH standard limit.

8. The formula of a livable, eco-friendly, maternal and infant-grade decoration material according to claim 1, characterized in that: The glycoside plant extract is a mixture of glucoside and rhamnoside, which is extracted from plant rhizomes by enzymatic hydrolysis and forms a synergistic catalytic system with nano zinc oxide to decompose formaldehyde without light.

9. The formula of a livable, eco-friendly, maternal and infant-grade decoration material according to claim 1, characterized in that: It is suitable for sensitive environments such as mother-and-baby rooms, children's activity areas, and hospital wards. It forms a dense antibacterial layer of 0.1-0.3mm on the surface and can withstand scrubbing times greater than 10,000 times.

10. The method for preparing a formula of a livable, eco-friendly, maternal and infant-grade decoration material according to claim 1, characterized in that: After the hot pressing, a gradient cooling process is adopted: first, the pressure is maintained at 250°C for 20 minutes, then the temperature is reduced to 100°C at a rate of 5°C / minute, and then naturally cooled to room temperature to improve the density of the material.