Weather-resistant three-proofing bamboo environment-friendly coating

Abstract

The invention discloses a weather-resistant three-proofing bamboo environment-friendly coating which is characterized by being prepared from the following raw materials in parts by weight: 20-30 parts of adipate, 15-25 parts of tetraethoxysilane, 8-15 parts of absolute ethyl alcohol, 4-8 parts of water-based fluorocarbon emulsion, 3-6 parts of sodium borate, 4-7 parts of zirconium phosphate, 2-6 parts of silver nitrate, 3-8 parts of nano-zinc oxide, 2-4 parts of quaternary ammonium salt, 2-4 parts of a lubricant, 2-4 parts of a dispersant and 1-3 parts of a defoaming agent. According to the present invention, the process is reasonable, the good effects of mildew resistance, corrosion resistance and worm damage resistance are achieved, the outdoor durability is high, the coating can endure the sun and rain, the ultraviolet aging resistance is strong, the service life is greatly prolonged, and the environmental protection property and the safety are improved compared with the traditional bamboo wood coating.

Description

Technical Field

[0001] The present invention relates to an environment-friendly bamboo and wood coating, and particularly to a weather-resistant three-proof environment-friendly bamboo and wood coating, belonging to the technical field of protective coatings. Background Art

[0002] China is rich in bamboo resources. Bamboos represented by phyllostachys pubescens are widely distributed in China and grow rapidly, which are important renewable resources. Bamboo and wood are rich in nutrients required by microorganisms such as sugars, starches, proteins and fats, and are prone to mildew, discoloration, insect damage and decay. When used as building materials or other materials, mildew prevention, corrosion prevention and insect prevention are very important. For a long time, the mildew prevention, corrosion prevention and insect prevention of bamboo and wood materials have been technical problems. Especially for raw bamboo and logs used as engineering materials or building materials outdoors, they are more likely to mildew, decay and be damaged by insects. Molds and decay fungi will seriously reduce the compressive, tensile and bearing capacities of bamboo and wood materials, reduce the physical properties, have a short service life, and when used as building materials, the aesthetics will decline after mildew, which severely restricts the large-scale use of fast-growing renewable natural materials represented by raw bamboo.

[0003] At present, the mildew and corrosion prevention on the surface of bamboo and wood generally adopt the treatment with toxic chemical agents such as chromated copper arsenate series. After use, there will be certain heavy metal pollution, and arsenic will also damage the environment. There is a potential threat to environmental quality and human health. It has been prohibited in many countries such as the United States, Canada and Finland, and its application has been greatly restricted. There are also water-soluble protective coatings used to brush to achieve the effect of mildew and corrosion prevention. The fatal defect of water-soluble protective coatings is poor anti-loss performance. The formed continuous attached film will partially dissolve in water under the scouring of outdoor rainwater, pollute the soil and water system, and have poor use durability and cannot be used in large-scale engineering applications. There has always been a lack of an environment-friendly coating with good mildew prevention, corrosion prevention and insect prevention effects, high durability, strong adhesion, excellent anti-loss performance, long service life, and harmless to humans and the environment to solve the above technical problems. Summary of the Invention

[0004] The object of the present invention is to provide a weather-resistant three-proof environment-friendly bamboo and wood coating with reasonable process, good mildew prevention, corrosion prevention and insect prevention effects, no heavy metal pollution, strong adhesion, excellent anti-loss performance, no loss under rainwater scouring, high durability outdoors, greatly extended service life, and harmless to humans and the environment, aiming at the defects and deficiencies that the protective coatings for existing bamboo and wood materials have unsatisfactory mildew prevention, corrosion prevention and insect prevention effects, either have the risk of heavy metal pollution and environmental damage, or have poor anti-loss performance, poor use durability, short service life, and seriously affect large-scale engineering applications.

[0005] To achieve the above-mentioned invention purpose, the technical solution of the present invention is: a weather-resistant three-proof bamboo and wood environmental protection coating, which is characterized in that it is made of the following raw materials in parts by weight: 20-30 parts of adipic acid ester, 15-25 parts of tetraethyl orthosilicate, 8-15 parts of absolute ethanol, 4-8 parts of waterborne fluorocarbon emulsion, 3-6 parts of sodium borate, 4-7 parts of zirconium phosphate, 2-6 parts of silver nitrate, 3-8 parts of nano-zinc oxide, 2-4 parts of quaternary ammonium salt, 2-4 parts of lubricant, 2-4 parts of dispersant, and 1-3 parts of defoamer.

[0006] Further, 20 parts of adipic acid ester, 15 parts of tetraethyl orthosilicate, 8 parts of absolute ethanol, 4 parts of waterborne fluorocarbon emulsion, 3 parts of sodium borate, 4 parts of zirconium phosphate, 2 parts of silver nitrate, 3 parts of nano-zinc oxide, 2 parts of quaternary ammonium salt, 2 parts of lubricant, 2 parts of dispersant, and 1 part of defoamer.

[0007] Further, 25 parts of adipic acid ester, 20 parts of tetraethyl orthosilicate, 11 parts of absolute ethanol, 6 parts of waterborne fluorocarbon emulsion, 5 parts of sodium borate, 6 parts of zirconium phosphate, 5 parts of silver nitrate, 5 parts of nano-zinc oxide, 3 parts of quaternary ammonium salt, 3 parts of lubricant, 3 parts of dispersant, and 2 parts of defoamer.

[0008] Further, 30 parts of adipic acid ester, 25 parts of tetraethyl orthosilicate, 15 parts of absolute ethanol, 8 parts of waterborne fluorocarbon emulsion, 6 parts of sodium borate, 7 parts of zirconium phosphate, 6 parts of silver nitrate, 8 parts of nano-zinc oxide, 4 parts of quaternary ammonium salt, 4 parts of lubricant, 4 parts of dispersant, and 3 parts of defoamer.

[0009] Further, the raw material components further include tung oil, and by weight, the tung oil is 2-4 parts.

[0010] Further, the nano-zinc oxide is made by modifying nano-zinc oxide with a silane coupling agent.

[0011] Further, the defoamer includes dimethyl silicone oil, butyl acetate, and deionized water.

[0012] The beneficial effects of the present invention are: 1. The present invention uses adipic acid ester and tetraethyl orthosilicate, and is used in combination with absolute ethanol. Alcohols are both good solubilizers and good penetrants, which can help the coating agents penetrate well into the inner layer of raw bamboo and log through bamboo and wood fibers and pores, better play the effect of the agents, and at the same time are beneficial to better blocking the fine pores after the coating dries, forming a good sealing and wrapping effect on the surface.

[0013] 2. The present invention uses nano-zinc oxide, ensuring the nano-scale property and dispersibility of zinc oxide. The combined use of nano-zinc oxide and silver nitrate can complex with the generated anions, exerting a synergistic effect to form a highly efficient antibacterial and mildew-proof material. It can not only adsorb on the cell walls of bacteria and molds, penetrate into the cell walls, affect their growth and reproduction, but also reduce the water activity inside the cells, causing the cells to lose their ability to divide and die.

[0014] 3. The sodium borate and zirconium phosphate used in the present invention can significantly enhance the adhesion ability of the coating. When used in combination with adipate, tetraethyl orthosilicate, absolute ethanol, waterborne fluorocarbon emulsion, and quaternary ammonium salt, they can improve the wear resistance of the coating surface. When used as materials for outdoor walkways, guardrails, and buildings, they have high durability and excellent anti-loss performance. In addition, with the use of tung oil, the lubricity is better, making it easier to apply and the construction is convenient and fast.

[0015] 2. The present invention uses environmentally friendly materials and has a reasonable process, achieving good mildew-proof, anti-corrosion, and anti-insect effects. It has high durability outdoors, can withstand sunlight, rain, and has strong anti-ultraviolet aging ability, greatly extending the service life. Compared with traditional bamboo and wood coatings, its environmental protection and safety have been improved, making it suitable for large-scale engineering applications. Detailed implementation mode

[0016] The following further describes the present invention in detail in combination with the specific implementation mode.

[0017] Example 1: This example provides a weather-resistant three-proof bamboo and wood environmental protection coating, which is made from the following raw materials in parts by weight: 20 parts of adipate, 15 parts of tetraethyl orthosilicate, 8 parts of absolute ethanol, 4 parts of waterborne fluorocarbon emulsion, 3 parts of sodium borate, 4 parts of zirconium phosphate, 2 parts of silver nitrate, 3 parts of nano-zinc oxide, 2 parts of quaternary ammonium salt, 2 parts of lubricant, 2 parts of dispersant, and 1 part of defoamer. Put adipate, tetraethyl orthosilicate, absolute ethanol, waterborne fluorocarbon emulsion, sodium borate, zirconium phosphate, silver nitrate, nano-zinc oxide, quaternary ammonium salt, and lubricant into a container and heat and stir them in a water bath, maintaining the pressure of the sealed container at 0.4 MPa, controlling the temperature at 60 °C, and the stirring and mixing time at 50 - 70 minutes. Adjust the pressure to normal pressure, control the temperature at 40 - 50 °C, continue to add the dispersant and defoamer to the mixture, and continue to stir and react for 20 - 30 minutes, then cool naturally to obtain the three-proof bamboo and wood environmental protection coating of the present invention.

[0018] Example 2: This example provides a weather-resistant three-proof bamboo and wood environmental protection coating, which is made from the following raw materials in parts by weight: 21 parts of adipate, 16 parts of tetraethyl orthosilicate, 9 parts of absolute ethanol, 5 parts of water-based fluorocarbon emulsion, 4 parts of sodium borate, 5 parts of zirconium phosphate, 3 parts of silver nitrate, 4 parts of nano-zinc oxide, 2 parts of quaternary ammonium salt, 2 parts of lubricant, 2 parts of dispersant, and 1 part of defoamer. Put adipate, tetraethyl orthosilicate, absolute ethanol, water-based fluorocarbon emulsion, sodium borate, zirconium phosphate, silver nitrate, nano-zinc oxide, quaternary ammonium salt, and lubricant into a container and stir while heating in a water bath. Keep the pressure of the sealed container at 0.5 MPa, control the temperature at 60 °C, and the stirring and mixing time is 50 - 70 minutes. Adjust the pressure to normal pressure, control the temperature at 40 - 50 °C, continue to add dispersant and defoamer to the mixture, and continue to stir and react for 20 - 30 minutes, then cool naturally to obtain the three-proof bamboo and wood environmental protection coating of the present invention.

[0019] Example 3: This example provides a weather-resistant three-proof bamboo and wood environmental protection coating, which is made from the following raw materials in parts by weight: 23 parts of adipate, 18 parts of tetraethyl orthosilicate, 10 parts of absolute ethanol, 5 parts of water-based fluorocarbon emulsion, 4 parts of sodium borate, 5 parts of zirconium phosphate, 4 parts of silver nitrate, 4 parts of nano-zinc oxide, 2 parts of quaternary ammonium salt, 2 parts of lubricant, 2 parts of dispersant, and 1 part of defoamer. Put adipate, tetraethyl orthosilicate, absolute ethanol, water-based fluorocarbon emulsion, sodium borate, zirconium phosphate, silver nitrate, nano-zinc oxide, quaternary ammonium salt, and lubricant into a container and stir while heating in a water bath. Keep the pressure of the sealed container at 0.6 MPa, control the temperature at 63 °C, and the stirring and mixing time is 50 - 70 minutes. Adjust the pressure to normal pressure, control the temperature at 50 - 60 °C, continue to add dispersant and defoamer to the mixture, and continue to stir and react for 20 - 30 minutes, then cool naturally to obtain the three-proof bamboo and wood environmental protection coating of the present invention.

[0020] Example 4: This example provides a weather-resistant three-proof bamboo and wood environmental protection coating, which is made from the following raw materials in parts by weight: 25 parts of adipate, 20 parts of tetraethyl orthosilicate, 11 parts of absolute ethanol, 6 parts of water-based fluorocarbon emulsion, 5 parts of sodium borate, 6 parts of zirconium phosphate, 5 parts of silver nitrate, 5 parts of nano-zinc oxide, 3 parts of quaternary ammonium salt, 3 parts of lubricant, 3 parts of dispersant, and 2 parts of defoamer. Put adipate, tetraethyl orthosilicate, absolute ethanol, water-based fluorocarbon emulsion, sodium borate, zirconium phosphate, silver nitrate, nano-zinc oxide, quaternary ammonium salt, and lubricant into a container and stir while heating in a water bath. Keep the pressure of the sealed container at 0.7 MPa, control the temperature at 70 °C, and the stirring and mixing time is 80 - 90 minutes. Adjust the pressure to normal pressure, control the temperature at 40 - 50 °C, continue to add dispersant and defoamer to the mixture, and continue to stir and react for 20 - 30 minutes, then cool naturally to obtain the three-proof bamboo and wood environmental protection coating of the present invention.

[0021] Example 5: This example provides a weather-resistant three-proof bamboo and wood environmental protection coating, which is made from the following raw materials in parts by weight: adipate 25 parts, tetraethyl orthosilicate 20 parts, absolute ethanol 11 parts, waterborne fluorocarbon emulsion 6 parts, sodium borate 5 parts, zirconium phosphate 6 parts, silver nitrate 5 parts, nano-zinc oxide 5 parts, quaternary ammonium salt 3 parts, lubricant 3 parts, dispersant 3 parts, defoamer 2 parts. Put adipate, tetraethyl orthosilicate, absolute ethanol, waterborne fluorocarbon emulsion, sodium borate, zirconium phosphate, silver nitrate, nano-zinc oxide, quaternary ammonium salt and lubricant into a container and stir while heating in a water bath. Keep the pressure of the sealed container at 0.7 MPa, control the temperature at 70 °C, and the stirring and mixing time is 80 - 90 minutes. Adjust the pressure to normal pressure, control the temperature at 40 - 50 °C, continue to add dispersant, defoamer and tung oil to the mixture. By weight, tung oil is 3 parts, and continue to stir and react for 20 - 30 minutes, and then cool naturally to obtain the three-proof bamboo and wood environmental protection coating of the present invention.

[0022] Example 6: This example provides a weather-resistant three-proof bamboo and wood environmental protection coating, which is made from the following raw materials in parts by weight: adipate 27 parts, tetraethyl orthosilicate 22 parts, absolute ethanol 12 parts, waterborne fluorocarbon emulsion 7 parts, sodium borate 5 parts, zirconium phosphate 7 parts, silver nitrate 5 parts, nano-zinc oxide 7 parts, quaternary ammonium salt 3 parts, lubricant 3 parts, dispersant 3 parts, defoamer 2 parts. Put adipate, tetraethyl orthosilicate, absolute ethanol, waterborne fluorocarbon emulsion, sodium borate, zirconium phosphate, silver nitrate, nano-zinc oxide, quaternary ammonium salt and lubricant into a container and stir while heating in a water bath. Keep the pressure of the sealed container at 0.6 MPa, control the temperature at 63 °C, and the stirring and mixing time is 50 - 70 minutes. Adjust the pressure to normal pressure, control the temperature at 50 - 60 °C, continue to add dispersant, defoamer and tung oil to the mixture. By weight, tung oil is 4 parts, and continue to stir and react for 20 - 30 minutes, and then cool naturally to obtain the three-proof bamboo and wood environmental protection coating of the present invention.

[0023] Example 7: This example provides a weather-resistant three-proof bamboo and wood environmental protection coating, which is made from the following raw materials in parts by weight: adipate 28 parts, tetraethyl orthosilicate 24 parts, absolute ethanol 13 parts, waterborne fluorocarbon emulsion 7 parts, sodium borate 6 parts, zirconium phosphate 7 parts, silver nitrate 5 parts, nano-zinc oxide 7 parts, quaternary ammonium salt 4 parts, lubricant 3 parts, dispersant 3 parts, defoamer 3 parts. Put adipate, tetraethyl orthosilicate, absolute ethanol, waterborne fluorocarbon emulsion, sodium borate, zirconium phosphate, silver nitrate, nano-zinc oxide, quaternary ammonium salt and lubricant into a container and stir while heating in a water bath. Keep the pressure of the sealed container at 0.6 MPa, control the temperature at 80 °C, and the stirring and mixing time is 50 - 70 minutes. Adjust the pressure to normal pressure, control the temperature at 40 - 50 °C, continue to add dispersant and defoamer to the mixture, and continue to stir and react for 20 - 30 minutes, and then cool naturally to obtain the three-proof bamboo and wood environmental protection coating of the present invention.

[0024] Example 8: This example provides a weather-resistant three-proof bamboo and wood environmental protection coating, which is made from the following raw materials in parts by weight: 30 parts of adipate, 25 parts of tetraethyl orthosilicate, 15 parts of absolute ethanol, 8 parts of waterborne fluorocarbon emulsion, 6 parts of sodium borate, 7 parts of zirconium phosphate, 6 parts of silver nitrate, 8 parts of nano-zinc oxide, 4 parts of quaternary ammonium salt, 4 parts of lubricant, 4 parts of dispersant, and 3 parts of defoamer. Put adipate, tetraethyl orthosilicate, absolute ethanol, waterborne fluorocarbon emulsion, sodium borate, zirconium phosphate, silver nitrate, nano-zinc oxide, quaternary ammonium salt, and lubricant into a container and stir while heating in a water bath. Keep the pressure of the sealed container at 0.6 MPa, control the temperature at 70 °C, and the stirring and mixing time is 50 - 70 minutes. Adjust the pressure to normal pressure, control the temperature at 50 - 60 °C, continue to add dispersant and defoamer to the mixture, and continue to stir and react for 20 - 30 minutes, then cool naturally to obtain the three-proof bamboo and wood environmental protection coating of the present invention.

[0025] Take a bamboo about 1 year old, clean the dust on the surface and dry it in the natural state, then cut it into 9 sections and label them respectively. One section of the sample is not treated and used as a control group, and the other 8 sections of the samples are evenly coated with the environmental protection coatings prepared in Examples 1 - 8, and then placed under natural conditions in the wild.

[0026] The environmental protection coating prepared according to the ratio of the examples of the present invention can achieve good anti-mildew, anti-corrosion, and anti-insect effects. Compared with the control group without any treatment, the time of mildew, rot, and insect damage is significantly delayed. Among them, under the ratio and temperature conditions of Example 5, the overall effect is the best, which is the optimal example.

[0027] The above content is a further detailed description of the present invention in combination with specific implementation manners. It cannot be considered that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, the present invention will have various simple substitutions, improvements, and changes. All the simple substitutions, improvements, and changes made should be regarded as belonging to the protection scope of the present invention.

Claims

1. A weather-resistant three-proof bamboo and wood environmental protection coating, characterized in that: It is made from the following raw materials in parts by weight: 20 - 30 parts of adipate, 15 - 25 parts of tetraethyl orthosilicate, 8 - 15 parts of absolute ethanol, 4 - 8 parts of waterborne fluorocarbon emulsion, 3 - 6 parts of sodium borate, 4 - 7 parts of zirconium phosphate, 2 - 6 parts of silver nitrate, 3 - 8 parts of nano zinc oxide, 2 - 4 parts of quaternary ammonium salt, 2 - 4 parts of lubricant, 2 - 4 parts of dispersant, and 1 - 3 parts of defoamer.

2. The weather-resistant three-proof bamboo and wood environmental protection paint according to claim 1, characterized in that: The adipate is 20 parts, the tetraethyl orthosilicate is 15 parts, the absolute ethanol is 8 parts, the waterborne fluorocarbon emulsion is 4 parts, the sodium borate is 3 parts, the zirconium phosphate is 4 parts, the silver nitrate is 2 parts, the nano zinc oxide is 3 parts, the quaternary ammonium salt is 2 parts, the lubricant is 2 parts, the dispersant is 2 parts, and the defoamer is 1 part.

3. The weather-resistant three-proof bamboo and wood environmental protection coating according to claim 1, wherein: The adipate is 25 parts, the tetraethyl orthosilicate is 20 parts, the absolute ethanol is 11 parts, the waterborne fluorocarbon emulsion is 6 parts, the sodium borate is 5 parts, the zirconium phosphate is 6 parts, the silver nitrate is 5 parts, the nano zinc oxide is 5 parts, the quaternary ammonium salt is 3 parts, the lubricant is 3 parts, the dispersant is 3 parts, and the defoamer is 2 parts.

4. The installation structure for righting and aligning the lotus root beam according to claim 1, wherein: The adipate is 30 parts, the tetraethyl orthosilicate is 25 parts, the absolute ethanol is 15 parts, the waterborne fluorocarbon emulsion is 8 parts, the sodium borate is 6 parts, the zirconium phosphate is 7 parts, the silver nitrate is 6 parts, the nano zinc oxide is 8 parts, the quaternary ammonium salt is 4 parts, the lubricant is 4 parts, the dispersant is 4 parts, and the defoamer is 3 parts.

5. The alignment and installation structure for righting a lotus root beam according to claim 1, wherein: The raw material components further include tung oil, and by weight, the tung oil is 2 - 4 parts.

6. The alignment and installation structure for righting the lotus root beam according to claim 1, characterized in that: The nano zinc oxide is made by modifying nano zinc oxide with a silane coupling agent.

7. The alignment and installation structure for righting and aligning the lotus root beam according to claim 1, wherein: The defoamer includes dimethyl silicone oil, butyl acetate, and deionized water.