CN-121991554-A - Antioxidant formula of maca Long Seji pencil coating and preparation method

Abstract

The invention discloses an antioxidation formula of a maca Long Seji pencil coating and a preparation method thereof, and particularly relates to the field of antioxidation pencil coatings. The paint consists of aqueous acrylic resin, aqueous polyurethane resin, rutile type titanium dioxide, nano diatomite subjected to surface modification by a silane coupling agent, natural plant extract, an ultraviolet absorbent, a dispersing agent and aqueous environment-friendly color paste. The nano diatomite is ground and surface-modified, so that the dispersion stability of the nano diatomite in a resin system is improved, and the oxidation fading of the coating under the conditions of natural illumination and air is effectively inhibited through the synergistic effect of plant extracts such as green tea, grape seeds, rosemary and the like and an ultraviolet absorbent. The method comprises the steps of base slurry dispersion, resin mixing, color paste blending, plant extract dissolution, vacuum defoaming and the like, and the prepared coating has the characteristics of soft color, high stability, excellent oxidation resistance and the like, and can remarkably improve the durability and the appearance retention of the macarons-based pencil coating.

Inventors

• PAN HAIWEI
• LIU LIJUN
• LIU XIANGFEI
• YE QIANG

Assignees

• 浙江安益新材料有限公司

Dates

Publication Date

20260508

Application Date

20260109

Claims (10)

1. 1. The oxidation-resistant formula of the macarons Long Seji pencil coating is characterized by comprising, by weight, 30-40 parts of aqueous acrylic resin, 15-20 parts of aqueous polyurethane resin, 10-15 parts of nano diatomite, 1-3 parts of natural plant extract, 1-2 parts of ultraviolet absorber, 0.5-1.5 parts of antioxidant, 10-20 parts of titanium dioxide, 0.1-2.0 parts of aqueous environment-friendly color paste, 0.2-0.5 part of defoamer, 1-3 parts of dispersant, 40-48 parts of deionized water and 5-15 parts of natural plant extract solvent.
2. 2. The antioxidant formula of the maca Long Seji pencil coating according to claim 1, wherein the dispersant is 5-10% of polycarboxylic acid sodium salt dispersant aqueous solution, and the content of the polycarboxylic acid sodium salt dispersant is 3.0-8.0% of the total weight of the solid.
3. 3. The antioxidant formula of the maca Long Seji pencil coating according to claim 1, wherein the particle size of the nano diatomite is 50-200 nm, the specific surface area is 200-500 m 2 /g, and the surface is chemically modified by epoxy silane or methacryloxy silane.
4. 4. The antioxidant formula of the maca Long Seji pencil coating according to claim 1, wherein the natural plant extract is one of green tea extract, grape seed extract, rosemary extract, olive leaf extract and tea tree essential oil extract, the purity of the natural plant extract is 80% -95%, and the natural plant extract is decolorized.
5. 5. The oxidation-resistant formula of the maca Long Seji pencil coating according to claim 1 is characterized in that the water-based environment-friendly color paste is a macarons color system formed by proportioning any one or more pigments of water-based red, water-based green and water-based blue with titanium dioxide.
6. 6. The antioxidant formula of a carriage Long Seji pencil coating of claim 1, wherein the ultraviolet absorber is one of emulsion type hydroxyphenyl triazine ultraviolet absorbers, UV-1215, UV-400 and UV-5151.
7. 7. The antioxidant formula of a maca Long Seji pencil coating according to claim 1, wherein the antioxidant is one of a water-soluble vitamin E derivative, hydrogenated dibenzothiophene and vanillin.
8. 8. The antioxidant formula of the maca Long Seji pencil coating according to claim 1 is characterized in that the natural plant extract solvent comprises four solvents which are 3-8 parts of deionized water, 2-6 parts of propylene glycol, 0.05-0.2 part of AMP-95 and can dissolve one of green tea extract and olive leaf extract, 3-7 parts of propylene glycol, 2-5 parts of propylene glycol methyl ether, 0.5-1.5 parts of polysorbate-20 and can dissolve grape seed extract, 2-4 parts of propylene glycol butyl ether, 4-7 parts of propylene glycol, 1.5-3 parts of polysorbate-80 and 0.5-1.5 parts of deionized water and can dissolve tea tree essential oil extract, wherein the solvents are 2-4 parts of propylene glycol butyl ether, 3-6 parts of propylene glycol and 3-6 parts of polysorbate-80 and 0.5-1.5 parts of deionized water.
9. 9. A method for preparing the oxidation resistant formulation of the macarons-based pencil coating according to any one of claims 1 to 8, which is characterized by comprising the following steps: S1, mixing and dispersing deionized water, a defoaming agent, pretreated nano diatomite, titanium dioxide and a dispersing agent with the formula amount of 60-80% at 2000-3000 rpm for 15-20 min to obtain stable white base slurry; S2, mixing and adding the formula amount of aqueous acrylic resin and aqueous polyurethane resin into the white base slurry of the S1 to form a resin mixture, reducing the stirring speed to 1000-1200 rpm, dispersing for 10-15 min, adding aqueous environment-friendly color paste, and adding the rest deionized water to continuously disperse for 30-40 min at 25-35 ℃ to obtain basic color paint; And S3, dissolving the natural plant extract and the solvent according to the formula amount, adding the mixture into basic colored paint, magnetically stirring the mixture for 5 to 10 minutes at a temperature of between 25 and 30 ℃, adding the ultraviolet absorbent and the antioxidant according to the formula amount, mixing and decelerating the mixture at 300 to 600rpm, stirring the mixture for 8 to 12 minutes, and carrying out vacuum defoaming, and standing the mixture for 24 hours without layering phenomenon to obtain the macarons colored pencil coating.
10. 10. The method for preparing the oxidation resistant formulation of the macarons-based pencil coating according to claim 9, wherein the pretreatment step of the nano-scale diatomite in the step S1 is that the untreated diatomite is washed with deionized water for 2-3 times, zirconia beads of 0.6-1.0 mm are selected to be ground for 4-6 hours at room temperature, and epoxy silane or methacryloxy silane of 0.5-2% is added to react for 2-4 hours and dried for standby to obtain the nano-scale diatomite.

Description

Antioxidant formula of maca Long Seji pencil coating and preparation method Technical Field The invention relates to the field of antioxidation pencil coating, in particular to an antioxidation formula of a maca Long Seji pencil coating and a preparation method thereof. Background The technical field of pencil coating formulation comprises the research and development and application of chemical materials such as coating, pigment, auxiliary agent and the like, and mainly relates to the design and formulation optimization of a coating for a pencil. The core content of the technical field comprises research on how to improve the performance of the pencil, such as color, hardness, glossiness, durability and the like, by adjusting the formula of the coating, and besides, the environmental protection property and the production cost of the pencil coating are important aspects of the field. The oxidation resistance, ultraviolet resistance and abrasion resistance of the coating are also key technical requirements for improving the quality of the pencil coating. In recent years, as the demands of individualization and environmental protection increase, the design of pencil coating materials has been focused on innovation and multifunctionality. The existing paint for the pencil surface mostly adopts water-based resin or solvent-based resin system to meet the environmental protection and safety requirements. The light-colored macarons coating has higher requirements on hiding power, durability and yellowing resistance, but common aqueous systems are easy to cause yellowing, fading and surface abrasion under long-term use or ultraviolet irradiation, and the appearance and the service life of the pencil are influenced. The patent CN116904047B aims at the problem that anode carbon blocks for aluminum electrolysis are easy to oxidize and fall slag at high temperature, and provides an environment-friendly coating taking the coating powder from the covering material of an electrolytic tank as a main raw material, and the core is that the electrolytic waste is recycled, and the coating is prepared by mixing the coating powder with low iron content, phosphoric acid, aluminum hydroxide and the like. The coating can form a compact protective layer at high temperature, effectively isolate oxygen, and can be melted to participate in reaction at the electrolysis temperature without influencing the electrolysis process. Can prolong the service life of the anode, and has the advantages of waste recycling, low cost and good environmental compatibility. Patent CN116462997B faces the oxidation protection of silicon steel during high temperature heating. The main components of the paint are fused magnesia, calcium aluminate cement, anhydrous sodium carbonate and blast furnace slag, chromium-containing materials are not used completely, environmental pollution is avoided, the paint forms a stable coating at high temperature, the binding force is strong, cracking is not easy, stripping is easy after cooling, the silicon steel oxidation burning loss is reduced by more than 75%, and the cost is only 30% of that of similar products in the market. The invention has strong high-temperature stability, environmental protection and low cost, and is suitable for high-temperature protection in the steel industry. Patent CN109294298A discloses an antioxidation coating applied to high-temperature steel and a preparation method thereof, and belongs to the technical field of high-temperature protective coatings. The coating is based on an inorganic adhesive and is matched with bauxite, chromium oxide, high-purity magnesia, feldspar, industrial aluminum powder, functional auxiliary agents and the like, and the water-based coating with fineness less than 30 microns is prepared through optimized proportioning and ball milling processes, is suitable for a heat treatment environment at 1000-1250 ℃, and has the characteristics of simplicity and convenience in construction, low cost and wide adaptability. In order to solve the problems, a water-based paint formula which maintains the soft look and feel of the macarons color system and simultaneously has the masking ability, wear resistance, ultraviolet resistance and oxidation resistance is needed, and the process is simple, environment-friendly and easy for industrial production, so that the scheme provides the oxidation-resistant formula of the macarons Long Seji pencil paint and the preparation method thereof. Disclosure of Invention The invention mainly aims to provide an antioxidation formula and a preparation method of a macarons Long Seji pencil coating, which can effectively solve the problems of high requirements on covering power, durability and yellowing resistance of the macarons color-based coating. In order to achieve the above purpose, the technical scheme adopted by the invention mainly comprises the following steps: the oxidation-resistant formula of the maca Long Seji pencil coating compri