A colored drawing simulation modeling wax and a preparation process thereof

Abstract

The application relates to the field of aromatherapy wax, and particularly discloses a color-drawing simulation modeling wax and a preparation process thereof. The color-drawing simulation modeling wax comprises the following raw materials in parts by weight: 60-80 parts of vegetable wax, 5-12 parts of stearic acid, 5-10 parts of palm wax, 5-20 parts of plant essential oil, 0.5-1.0 parts of lecithin, 0.1-0.3 parts of an antioxidant, 0.2-0.5 parts of a lubricant, and 1-3 parts of silane coupling agent modified inorganic pigment. The vegetable wax comprises castor wax and sunflower wax in a mass ratio of 1: (0.4-0.6). The color-drawing simulation modeling wax is realistic in modeling and high in stability.

Description

Technical Field

[0001] This application relates to the field of candles, and more specifically, to a painted, lifelike wax and its preparation process. Background Technology

[0002] As a daily consumer product that combines decorative, functional, and artistic value, painted simulated candles are increasingly in demand in high-end home decoration, aromatherapy, and festive gifts. The core technical requirement lies in achieving high-precision model reproduction, such as the unity of biomimetic plant textures, complex three-dimensional structures, and color stability, requiring the produced candles to be free of color blocks, stripes, and color changes.

[0003] However, in traditional processes, inorganic pigments are not compatible with wax-based materials such as paraffin and common plant waxes. Pigments have high surface energy while wax-based materials are low surface energy systems, which makes it easy for pigments to agglomerate and form color blocks. Furthermore, dispersants stabilize pigments only through physical adsorption, and they are prone to desorption during the melt-cool cycle, resulting in streak defects.

[0004] Due to the accumulation of internal stress during the crystallization process of wax base, and the excessively rapid crystallization rate of single wax raw materials, it is impossible to meet the shaping requirements of fine structures. Complex structures such as textures and edges are prone to deformation or shrinkage after demolding. At the same time, the weak bonding between traditional candle wicks and wax bodies can easily lead to localized collapse of the wax body during combustion, further compromising the integrity of the shape. When adding functional ingredients such as plant essential oils, their low boiling point characteristics result in a high volatility during melting, and the phase separation of essential oils and wax base can exacerbate uneven coloring. In addition, the introduction of additional functions such as antibacterial and slow-release often comes at the cost of sacrificing the precision of the shape. For example, the aggregation of nano-antibacterial agents may lead to abnormal local melting points, causing structural distortion during cooling.

[0005] Therefore, finding a way to produce scented candles with higher precision and color stability is of great value in meeting the high-end market's demand for a balance between decoration and functionality. Summary of the Invention

[0006] To address the issues of color accuracy and stability in painted candle designs, this application provides a painted simulated candle and its preparation process.

[0007] In one aspect, this application provides a painted simulation wax, comprising the following raw materials in parts by weight: 60-80 parts of plant wax, 5-12 parts of stearic acid, 5-10 parts of palm wax, 5-20 parts of plant essential oil, 0.5-1.0 parts of lecithin, 0.1-0.3 parts of antioxidant, 0.2-0.5 parts of lubricant, and 1-3 parts of silane coupling agent modified inorganic pigment.

[0008] By employing the above technical solution, a certain mass of plant wax, stearic acid, and palm wax are mixed. Long-chain fatty acid esters and stearic acid interact through van der Waals forces and hydrogen bonds to form a mixed crystal structure. The carboxyl groups of stearic acid and the ester groups of palm wax enhance intermolecular bonding through dipole-dipole interactions, and unsaturated fatty acid chains insert into the crystal network of the high-melting-point component, forming a eutectic structure. Long-chain hydrocarbon groups and the hydrophobic segments of the plant wax further stabilize the mixed system through hydrophobic interactions, resulting in more reasonable overall melting point control and reduced wax fluidity. The phosphate groups of lecithin molecules combine with the polar components in the wax, and the glyceryl ester chains embed into the wax matrix, forming an O / W emulsion, allowing for more uniform dispersion of essential oils and pigments.

[0009] In one specific feasible implementation, the plant wax comprises castor wax and sunflower wax, and linolenic acid in a mass ratio of 1:(0.4-0.6):(0.4-0.6).

[0010] By adopting the above technical solution, the mixed system formed by castor wax containing 12-hydroxystearic acid triglyceride, the hydroxyl group providing hydrogen bond sites, the high proportion of long-chain alkanes in sunflower wax enhancing hydrophobicity, and the insertion of linolenic acid unsaturated fatty acid segments into the crystal network structure is more stable, the components have a good coordination effect, the pigment is evenly dispersed, the candle has a certain hardness, and the combustion process is complete without producing obvious black smoke.

[0011] In one specific feasible implementation, the preparation process of silane coupling agent modified inorganic pigment includes: adding chromium oxide green and nano zinc oxide to KH-560 isopropanol aqueous solution, heating and stirring to react, and vacuum drying to obtain silane coupling agent modified inorganic pigment.

[0012] In one specific feasible implementation, the mass ratio of chromium oxide green to nano zinc oxide is 1:(0.7-0.9).

[0013] By adopting the above technical solution, the preparation method is relatively simple. Simultaneously, after silane hydrolysis, the silanol groups form covalent bonds with the hydroxyl groups on the surface of chromium oxide green and nano-zinc oxide through a condensation reaction. At the same time, the epoxy groups react with the Zn on the surface of nano-zinc oxide. 2+ Coordination bonds are formed, constructing a "two-site anchoring" structure. After modification, the resulting silane coupling agent-modified inorganic filler has a stable structure, a surface contact angle suitable for the wax system of this application, and significantly improved compatibility with the wax base. By further limiting the mass ratio of chromium oxide green and nano zinc oxide, the stability of the product is even better. At the same time, it not only enhances the dispersibility of the antibacterial component, but also improves the color saturation of the pigment through the quantum size effect of nanoparticles. The product is suitable for use in painted simulation waxes.

[0014] In one specific feasible implementation, the raw materials also include polypropylene glycol with a weight average molecular weight of 4000-8000.

[0015] In one specific feasible implementation, the raw material also includes Tween-80.

[0016] By adopting the above technical solution, the polyoxyethylene chains of the dispersant Tween-80 and the stabilizer polypropylene glycol interact through hydrogen bonds to form a three-dimensional network structure. During the raw material preparation and stirring process, the hydrophilic end of Tween-80 is bonded to the organic layer on the surface of the modified pigment through van der Waals forces, while the hydrophobic end segments are inserted between the wax-based molecular chains, forming a stable dispersion system of "pigment powder-dispersant-wax base". The resulting painted simulation candle has a more stable structure and color distribution.

[0017] In one specific feasible implementation, the plant essential oil includes one or more of the following: lavender essential oil, peppermint essential oil, tea tree essential oil, rose essential oil, lemon essential oil, eucalyptus essential oil, rosemary essential oil, bergamot essential oil, grapefruit essential oil, sweet orange essential oil, basil essential oil, thyme essential oil, jasmine essential oil, sandalwood essential oil, cedarwood essential oil, chamomile essential oil, sage essential oil, cinnamon essential oil, sweet fennel essential oil, vetiver essential oil, and benzoin essential oil.

[0018] In one specific feasible implementation, the plant essential oils include tea tree oil and rosemary oil.

[0019] By adopting the above technical solution, the terpinen-4-ol in tea tree essential oil forms a coordination bond with the hydroxyl groups on the surface of nano zinc oxide, which slows down the evaporation rate of the essential oil. At the same time, the natural antioxidant component of rosemary essential oil, sarsaparilla acid, can protect nano zinc oxide from oxidation, maintain its long-term antibacterial properties, and further extend the lifespan of the produced candle.

[0020] Secondly, this application relates to a preparation process of a painted simulation wax, which includes the following steps: S1: heating and melting plant wax, palm wax and stearic acid, adding antioxidants and lubricants and stirring; S2: Add the remaining components and mix at low speed to obtain a wax solution; S3: Fix the candle wick to the mold, pour in the wax liquid, and let it cool and solidify.

[0021] By adopting the above technical solution, the preparation method is simple and suitable for the components of this application.

[0022] In one specific feasible implementation, the cooling and curing is carried out in stages: first, water cooling at 60-65°C for 10-12 minutes, followed by cooling at room temperature for 1-3 hours.

[0023] By adopting the above technical solution, the α-type crystals of castor wax preferentially form on the wax-based surface, and its hexagonal crystal structure can quickly lock the position of the silane coupling agent-modified pigment. During the room temperature cooling stage, the internal sunflower wax slowly crystallizes into β-type crystals. Through the interlacing growth of the two types of crystals, internal stress is reduced. At the same time, the presence of nano-zinc oxide limits the migration rate of wax molecular chains, further reducing the overall shrinkage rate.

[0024] In summary, this application has the following beneficial effects: This application improves the toughness of the wax by combining different components, especially by forming a hydrogen bond network between the hydroxyl groups of castor wax and the ester groups of sunflower wax. At the same time, the high melting point of castor wax complements the fluidity of sunflower wax, thus optimizing the moldability during casting.

[0025] This application utilizes the epoxy groups of KH-560 to react simultaneously with pigments and nano zinc oxide to form a "pigment-nano zinc oxide" bridging structure, which not only enhances the dispersibility of antibacterial components but also improves the color saturation of pigments through the quantum size effect of nanoparticles.

[0026] This application utilizes the hydrogen bond network formed by the polyoxyethylene chain of Tween-80 and polypropylene glycol. The steric hindrance effect effectively prevents the modified pigment from agglomerating or settling, resulting in a more stable color performance of the candle.

[0027] This application utilizes the synergistic effect of essential oils and nanoparticles to delay the volatilization and deterioration of essential oils and antibacterial components, thereby enabling candles to maintain high quality over a long period. Detailed Implementation

[0028] To further aid in understanding the technical solution of the present invention, several specific implementation examples are provided below to describe the technical solution of the present invention in more detail. All of these described embodiments are only some embodiments of the present invention, and not all of them. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments; and the reaction devices, monomer compounds, etc. involved in the following embodiments are all commercially available.

[0029] The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0030] The following examples are further illustrations of the present invention, but the present invention is not limited thereto.

[0031] Preparation Example Preparation Example 1: Silane Coupling Agent Modified Inorganic Pigments Add 5g of chromium oxide green to 150ml of 30wt% isopropanol aqueous solution containing 5g of KH-560, heat and stir at 70℃ for 1 hour, and dry under vacuum to obtain silane coupling agent modified inorganic pigment.

[0032] Preparation Example 2: Silane Coupling Agent Modified Inorganic Pigments Add 3g of chromium oxide green and 2g of nano zinc oxide to 150ml of 30wt% isopropanol aqueous solution containing 5g of KH-560, heat and stir at 70℃ for 1 hour, and then vacuum dry to obtain silane coupling agent modified inorganic pigment.

[0033] Preparation Example 3: Silane Coupling Agent Modified Inorganic Pigments Add 2.8g of chromium oxide green and 2.2g of nano zinc oxide to 150ml of 30wt% isopropanol aqueous solution containing 5g of KH-560, heat and stir at 70℃ for 1 hour, and then dry under vacuum to obtain silane coupling agent modified inorganic pigment. Example

[0034] Example 1: In this embodiment, the components and their masses are as follows: 30g castor wax, 15g sunflower wax, 15g linolenic acid, 10g stearic acid, 8g palm wax, 10g lavender essential oil, 1.0g lecithin, 2g beeswax, 0.5g butylated hydroxytoluene, 0.3g vitamin E, 0.3g DBS, and 2g of the silane coupling agent modified inorganic pigment obtained in Preparation Example 1.

[0035] Preparation steps: S1: Melt castor wax, sunflower wax, linolenic acid, palm wax, stearic acid, and beeswax at 80℃. Add butylated hydroxytoluene and vitamin E, and stir at 250 rpm for 20 minutes. S2: Add the remaining components at 70℃ and mix at a low speed of 70 rpm for 20 min; S3: Fix the wax core to the blade-shaped mold, pour in the wax liquid, first water cool at 65℃ for 10 minutes, then cool at room temperature for 3 hours.

[0036] Example 2: In this embodiment, the components and their masses are as follows: 30g castor wax, 30g sunflower wax, 10g stearic acid, 8g palm wax, 10g lavender essential oil, 1.0g lecithin, 2g beeswax, 0.5g butylated hydroxytoluene, 0.3g vitamin E, 0.3g DBS, and 2g of the silane coupling agent modified inorganic pigment obtained in Preparation Example 1.

[0037] Preparation steps: S1: Melt castor wax, sunflower wax, linolenic acid, palm wax, stearic acid, and beeswax at 80℃. Add butylated hydroxytoluene and vitamin E, and stir at 250 rpm for 20 minutes. S2: Add the remaining components at 70℃ and mix at a low speed of 70 rpm for 20 min; S3: Fix the wax core to the blade-shaped mold, pour in the wax liquid, first water cool at 65℃ for 10 minutes, then cool at room temperature for 3 hours.

[0038] Example 3: In this embodiment, the components and their masses are as follows: 30g castor wax, 15g sunflower wax, 15g linolenic acid, 10g stearic acid, 8g palm wax, 10g lavender essential oil, 1.0g lecithin, 2g beeswax, 0.5g butylated hydroxytoluene, 0.3g vitamin E, 0.3g DBS, and 2g of the silane coupling agent modified inorganic pigment obtained in Preparation Example 2.

[0039] Preparation steps: S1: Melt castor wax, sunflower wax, linolenic acid, palm wax, stearic acid, and beeswax at 80°C, add butylated hydroxytoluene and vitamin E, and stir at 250 rpm for 20 min; S2: Add the remaining components at 70℃ and mix at a low speed of 70 rpm for 20 min; S3: Fix the wax core to the blade-shaped mold, pour in the wax liquid, first water cool at 65℃ for 10 minutes, then cool at room temperature for 3 hours.

[0040] Example 4: In this embodiment, the components and their masses are as follows: 30g castor wax, 15g sunflower wax, 15g linolenic acid, 10g stearic acid, 8g palm wax, 10g lavender essential oil, 1.0g lecithin, 2g beeswax, 0.5g butylated hydroxytoluene, 0.3g vitamin E, 0.3g DBS, and 2g of the silane coupling agent modified inorganic pigment obtained in Preparation Example 3.

[0041] Preparation steps: S1: Melt castor wax, sunflower wax, linolenic acid, palm wax, stearic acid, and beeswax at 80°C, add butylated hydroxytoluene and vitamin E, and stir at 250 rpm for 20 min; S2: Add the remaining components at 70℃ and mix at a low speed of 70 rpm for 20 min; S3: Fix the wax core to the blade-shaped mold, pour in the wax liquid, first water cool at 65℃ for 10 minutes, then cool at room temperature for 3 hours.

[0042] Example 5: In this embodiment, the components and their masses are as follows: 30g castor wax, 15g sunflower wax, 15g linolenic acid, 10g stearic acid, 8g palm wax, 10g lavender essential oil, 1.0g lecithin, 2g beeswax, 0.5g butylated hydroxytoluene, 0.3g vitamin E, 0.3g DBS, 2g polypropylene glycol 6000, 2g Tween-80, and 2g of the silane coupling agent modified inorganic pigment obtained in Preparation Example 1.

[0043] Preparation steps: S1: Melt castor wax, sunflower wax, linolenic acid, palm wax, stearic acid, and beeswax at 80°C, add butylated hydroxytoluene and vitamin E, and stir at 250 rpm for 20 min; S2: Add the remaining components at 70℃ and mix at a low speed of 70 rpm for 20 min; S3: Fix the wax core to the blade-shaped mold, pour in the wax liquid, first water cool at 65℃ for 10 minutes, then cool at room temperature for 3 hours.

[0044] Example 6: In this embodiment, the components and their masses are as follows: 30g castor wax, 15g sunflower wax, 15g linolenic acid, 10g stearic acid, 8g palm wax, 10g lavender essential oil, 1.0g lecithin, 2g beeswax, 0.5g butylated hydroxytoluene, 0.3g vitamin E, 0.3g DBS, 2g polypropylene glycol 2000, 2g Tween-80, and 2g of the silane coupling agent modified inorganic pigment obtained in Preparation Example 1.

[0045] Preparation steps: S1: Melt castor wax, sunflower wax, linolenic acid, palm wax, stearic acid, and beeswax at 80°C, add butylated hydroxytoluene and vitamin E, and stir at 250 rpm for 20 min; S2: Add the remaining components at 70℃ and mix at a low speed of 70 rpm for 20 min; S3: Fix the wax core to the blade-shaped mold, pour in the wax liquid, first water cool at 65℃ for 10 minutes, then cool at room temperature for 3 hours.

[0046] Example 7: In this embodiment, the components and their masses are as follows: 30g castor wax, 15g sunflower wax, 15g linolenic acid, 10g stearic acid, 8g palm wax, 5g tea tree oil, 5g rosemary oil, 1.0g lecithin, 2g beeswax, 0.5g butylated hydroxytoluene, 0.3g vitamin E, 0.3g DBS, 2g polypropylene glycol 6000, 2g Tween-80, and 2g of the silane coupling agent modified inorganic pigment obtained in Preparation Example 1.

[0047] Preparation steps: S1: Melt castor wax, sunflower wax, linolenic acid, palm wax, stearic acid, and beeswax at 80°C, add butylated hydroxytoluene and vitamin E, and stir at 250 rpm for 20 min; S2: Add the remaining components at 70℃ and mix at a low speed of 70 rpm for 20 min; S3: Fix the wax core to the blade-shaped mold, pour in the wax liquid, first water cool at 65℃ for 10 minutes, then cool at room temperature for 3 hours.

[0048] Comparative Example Comparative Example 1 In this embodiment, the components and their masses are as follows: 30g castor wax, 15g sunflower wax, 15g linolenic acid, 10g stearic acid, 8g palm wax, 10g lavender essential oil, 1.0g lecithin, 2g beeswax, 0.5g butylated hydroxytoluene, 0.3g vitamin E, 0.3g DBS, and 2g chromium oxide green.

[0049] Preparation steps: S1: Melt castor wax, sunflower wax, linolenic acid, palm wax, stearic acid, and beeswax at 80°C, add butylated hydroxytoluene and vitamin E, and stir at 250 rpm for 20 min; S2: Add the remaining components at 70℃ and mix at a low speed of 70 rpm for 20 min; S3: Fix the wax core to the blade-shaped mold, pour in the wax liquid, first cool it in water at 65℃ for 10 minutes, and then cool it at room temperature for 3 hours.

[0050] Performance testing 1. The carbon black index was tested according to SN / T3839-2014 "Determination of Carbon Black Generated During the Combustion of Imported and Exported Candles".

[0051] 2. Observe the uniformity of pigment on the sample surface. Wrap the prepared samples tightly with white cotton cloth and rub for 1 minute. Observe the pigment migration and the staining of the white cloth. Record the results as no staining, slight staining, and obvious staining.

[0052] 3. After demolding, let stand for 6 months and measure the volumetric deformation rate.

[0053] The test results are summarized in Table 1.

[0054] Table 1 In conjunction with Examples 1-2, Comparative Example 1, and Table 1, this application demonstrates that by using a variety of plant waxes together, the resulting painted simulated candles are less prone to deformation and pigment migration.

[0055] In conjunction with Examples 1, 3-4 and Table 1, this application further improves the stability of the product by adding a certain mass of nano zinc oxide during the modification process of the silane coupling agent.

[0056] In conjunction with Examples 1, 5-6 and Table 1, this application optimizes the structure of the product by adding a certain mass of polypropylene glycol and Tween-80 and limiting the molecular weight of polypropylene glycol, resulting in a more stable product.

[0057] In conjunction with Examples 1 and 7 and Table 1, this application limits the plant essential oils to include tea tree oil and rosemary oil, and works synergistically with nano zinc oxide to delay the volatilization and oxidation of the essential oils, resulting in a more structurally stable product.

[0058] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A type of painted simulation wax, characterized in that: The raw materials include the following parts by weight: 60-80 parts of plant wax, 5-12 parts of stearic acid, 5-10 parts of palm wax, 5-20 parts of plant essential oil, 0.5-1.0 parts of lecithin, 0.1-0.3 parts of antioxidant, 0.2-0.5 parts of lubricant, and 1-3 parts of silane coupling agent modified inorganic pigment; The plant wax comprises castor wax and sunflower wax, and linolenic acid in a mass ratio of 1:(0.4-0.6):(0.4-0.6); The painted simulated wax is made by the following steps: S1: Heat and melt plant wax, palm wax, and stearic acid, then add antioxidants and lubricants and stir. S2: Add the remaining components and mix at low speed to obtain a wax solution; S3: Fix the candle wick to the mold, pour in the wax liquid, and let it cool and solidify; The cooling and solidification process is a segmented cooling method, first water cooling at 60-65℃ for 10-12 minutes, then cooling at room temperature for 1-3 hours.

2. The painted simulation wax according to claim 1, characterized in that: The preparation process of the silane coupling agent modified inorganic pigment includes: adding chromium oxide green and nano zinc oxide to an isopropanol aqueous solution of KH-560, heating and stirring to react, and vacuum drying to obtain the silane coupling agent modified inorganic pigment.

3. The painted simulation wax according to claim 2, characterized in that: The mass ratio of chromium oxide green to nano zinc oxide is 1:(0.7-0.9).

4. The painted simulation wax according to claim 1, characterized in that: The raw materials also include polypropylene glycol with a weight average molecular weight of 4000-8000.

5. The painted simulation wax according to claim 1, characterized in that: The raw materials also include Tween-80.

6. The painted simulation wax according to claim 1, characterized in that: The plant essential oils include one or more of the following: lavender essential oil, peppermint essential oil, tea tree essential oil, rose essential oil, lemon essential oil, eucalyptus essential oil, rosemary essential oil, bergamot essential oil, grapefruit essential oil, sweet orange essential oil, basil essential oil, thyme essential oil, jasmine essential oil, sandalwood essential oil, cedarwood essential oil, chamomile essential oil, sage essential oil, cinnamon essential oil, sweet fennel essential oil, vetiver essential oil, and benzoin essential oil.

7. The painted simulation wax according to claim 1, characterized in that: The plant essential oils include tea tree oil and rosemary oil.

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