Tear-free aromatherapy candle and preparation method thereof

Abstract

The invention relates to a tear-free aromatherapy candle and a preparation method thereof. The tear-free aromatherapy candle is prepared from the following raw material components: 60 to 75 percent of soybean wax, 8 to 25 percent of coconut wax, 5 to 15 percent of palm wax and 3 to 5 percent of coffee carbon essential oil particles, wherein the coffee carbon essential oil particles are prepared by adsorbing a compound of pawpaw seed oil and compound essential oil on coffee residue carbon. According to the technical scheme, the aromatherapy candle can have a good shaping effect, is not prone to softening, deformation or cracking due to the influence of temperature, keeps the durability of the shape of the candle, is not prone to wax liquid flowing down in the combustion process, is not prone to generating excessive harmful gas and black smoke in the combustion process, and has good safety and environment friendliness.

Description

Technical Field

[0001] The present application relates to the technical field of daily chemical products, and in particular to a tear-free scented candle and a preparation method thereof. Background Art

[0002] Aromatherapy candles are candles that contain essential oils, which allow the aroma to be fully released during the burning process. The natural plant essential oils in them have the functions of beauty and health care, soothing nerves, purifying the air, and eliminating odors, and are popular among the public. However, many aromatherapy candles now produce black smoke during the burning process, and some even have wax liquid flowing down, affecting the viewing and experience. In addition, the black smoke may contain harmful gases, which endangers the health of consumers. Summary of the invention

[0003] In order to solve or partially solve the problems existing in the related art, the present application provides a tear-free scented candle and a preparation method thereof, which can make the scented candle have a good shaping effect, is not easily softened, deformed or cracked by temperature, maintains the durability of the candle shape, and is not prone to wax liquid flowing down during the combustion process, and the combustion is more stable and lasting; at the same time, soy wax, coconut wax and palm wax are all natural plant waxes, which burn fully, are not prone to produce excessive harmful gases and black smoke during the combustion process, have good safety and environmental protection, and also have a slight coconut fragrance during the combustion process, making the fragrance of the scented candle more intense and rich.

[0004] The first aspect of the present application provides a tear-free scented candle, characterized in that it comprises raw materials of the following components: 60-75% soybean wax, 8-25% coconut wax, 5-15% palm wax, and 3-5% coffee charcoal essential oil particles; wherein the coffee charcoal essential oil particles are prepared by adsorbing a complex of papaya seed oil and compound essential oil on coffee grounds carbon.

[0005] In some optional embodiments, the mass proportion of the papaya seed oil in the coffee charcoal essential oil particles is 0.5-1%; the mass proportion of the composite essential oil in the coffee charcoal essential oil particles is 0.5-2.5%.

[0006] In some optional embodiments, the mass ratio of the composite essential oil to papaya seed oil is (1-3):1.

[0007] In some optional embodiments, the steps of preparing the coffee grounds carbon include: crushing and sieving the coffee grounds to obtain coffee grounds powder; and heat treating the coffee grounds powder to obtain coffee grounds carbon.

[0008] In some optional embodiments, the obtained coffee grounds powder is sieved through a 200-mesh sieve.

[0009] In some optional embodiments, the heat treatment temperature is 150-300° C., and the heat treatment time is 25-45 min.

[0010] In some optional embodiments, the surface of the coffee grounds carbon that adsorbs papaya seed oil and compound essential oil is also coated with an essential oil coating liquid; the essential oil coating liquid is prepared by mixing palm wax and compound essential oil in a mass ratio of 10:(0.1-0.5).

[0011] In some optional embodiments, the composite essential oil in the coating liquid accounts for 15%-50% of the total composite essential oil.

[0012] In some optional embodiments, the mass ratio of the soybean wax, coconut wax and palm wax is (4-8):(1-2):(1-2).

[0013] The second aspect of the present application provides a method for preparing a tear-free scented candle, comprising the following steps: melting soybean wax, coconut wax, and palm wax, adding coffee charcoal essential oil particles, mixing evenly, and cooling and solidifying to obtain a tear-free scented candle.

[0014] The technical solution provided by this application may have the following beneficial effects:

[0015] The present application scheme adjusts the ratio between soy wax, coconut wax and palm wax so that the scented candle has a good shaping effect, is not easily softened, deformed or cracked by temperature, maintains the durability of the candle shape, is not prone to wax liquid flowing down during the combustion process, and burns more stably and lasts longer; at the same time, soy wax, coconut wax and palm wax are all natural plant waxes, burn fully, are not prone to produce excessive harmful gases and black smoke during the combustion process, have good safety and environmental protection, and also have a slight coconut fragrance during the combustion process, making the fragrance of the scented candle more intense and rich.

[0016] Furthermore, the coffee grounds carbon can effectively adsorb and load the composite essential oil and papaya seed oil, thereby slowly releasing the aroma components during the combustion process, so that the scented candle emits a rich and lasting fragrance with a stronger aroma persistence; at the same time, the coffee grounds carbon will also emit a special coffee aroma during the combustion process, which blends with the smell of the composite essential oil to increase the richness and persistence of the aroma; the papaya seed oil can not only play a role in fusing the various components in the composite essential oil and enhancing the wood frankincense of the scented candle, but also play a role as a stabilizer and antioxidant, thereby improving the stability of the composite essential oil, which is beneficial to maintaining the release persistence of various aroma components during the combustion process of the scented candle; therefore, the stability of the various components of the essential oil can be maintained without adding an additional stabilizer, and the aroma release during the combustion process of the scented candle can be maintained.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. DETAILED DESCRIPTION

[0018] To make the present invention easy to understand, the present invention will be described in detail below. However, before describing the present invention in detail, it should be understood that the present invention is not limited to the specific embodiments described. It should also be understood that the terms used herein are only for describing specific embodiments and are not intended to be limiting.

[0019] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0020] Where a numerical range is provided, it is to be understood that each intermediate value between the upper and lower limits of the range and any other provisions or intermediate values ​​in the specified range is encompassed within the present invention. The upper and lower limits of these smaller ranges may be independently included in the smaller ranges and are also encompassed within the present invention, subject to any explicitly excluded limits in the specified range. Where a specified range includes one or two limits, the scope excluding any or both of those included limits is also encompassed within the present invention. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically limited.

[0021] Unless otherwise defined, all terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the invention belongs. Although any methods and materials or equivalent methods and materials described herein can also be used in the practice or testing of the present invention, preferred methods and materials are now described.

[0022] Many of today's scented candles produce black smoke during the burning process, and some even have wax liquid flowing down, affecting the viewing experience. In addition, the black smoke may contain harmful gases that endanger the health of consumers.

[0023] In response to the above problems, the embodiments of the present application provide a tear-free scented candle, which has good product stability, burns without smoke and tears, is environmentally friendly and healthy, can maintain the shape of the scented candle while reducing the adverse effects of the scented candle on the human body when it is burned, and can also slow down the release rate of the essential oil, making the fragrance produced by the burning of the scented candle more lasting.

[0024] The tear-free scented candle of the embodiment of the present application includes raw materials of the following components: 60-75% soybean wax, 8-25% coconut wax, 5-15% palm wax, 3-5% coffee charcoal essential oil particles and 0.1-0.5% stabilizer; wherein the coffee charcoal essential oil particles are prepared by adsorbing a complex of papaya seed oil and compound essential oil on coffee grounds carbon.

[0025] First of all, the present application adjusts the ratio between soy wax, coconut wax and palm wax so that the scented candle has a good shaping effect, is not easily softened, deformed or cracked by temperature, maintains the durability of the candle shape, is not prone to wax liquid flowing down during the combustion process, and burns more stably and lasts longer; at the same time, soy wax, coconut wax and palm wax are all natural plant waxes, burn fully, are not prone to produce excessive harmful gases and black smoke during the combustion process, have good safety and environmental protection, and also have a slight coconut fragrance during the combustion process, making the fragrance of the scented candle more intense and rich.

[0026] Secondly, coffee grounds carbon can effectively adsorb and load composite essential oils and papaya seed oil, thereby slowly releasing aroma components during the combustion process, making the scented candle emit a rich and lasting fragrance with a stronger aroma persistence; at the same time, coffee grounds carbon will also emit a special coffee aroma during the combustion process, which blends with the smell of the composite essential oil to increase the richness and persistence of the aroma; papaya seed oil can not only play a role in integrating the various components in the composite essential oil and enhancing the woody frankincense of the scented candle, but also play a role as a stabilizer and antioxidant, thereby improving the stability of the composite essential oil, which is beneficial to maintaining the release persistence of various aroma components during the combustion process of the scented candle; therefore, there is no need to add additional stabilizers to maintain the stability of the various components of the essential oil and maintain the persistent release of the aroma during the combustion of the scented candle.

[0027] At the same time, the combined use of the aromatherapy wax system prepared by the soybean wax, coconut wax and palm wax and the coffee essential oil particles can make the aromatherapy candle have a rich and lasting residual fragrance with the addition of a small amount of essential oil, so that the essential oil can give full play to its effects of relieving tension, eliminating fatigue, reducing anxiety, etc., and enhance the user's sense of pleasure.

[0028] In some embodiments, the mass ratio of soy wax, coconut wax and palm wax is (4-8): (1-2): (1-2). Palm wax has a high melting point, and the shape of the candle in the scented candle system with palm wax is well maintained, so that the scented candle has a tear-free effect during the burning process, and is easy to store and transport; the scented candle system with a small amount of coconut wax can also produce a slight coconut fragrance, enriching the aroma; using soy wax and coconut wax as the main raw materials of the candle makes the burning time of the scented candle longer, prolonging the service life of the scented candle, which is conducive to maintaining the release and durability of the aroma of the scented candle, and all three are natural plant waxes, which are not easy to produce black smoke and other gases that affect human health during the combustion process, and have good environmental protection and safety effects.

[0029] Soy wax is a kind of plant wax extracted from soybean oil, which is cheap, non-toxic and environmentally friendly, has a long burning time, and can slowly and gently release the fragrance of the composite essential oil. In the embodiment of the present application, the soybean wax is selected from wax with a melting point of 46-48°C.

[0030] Coconut wax is extracted from coconut residue and coconut oil, has a long burning time, and has a slight coconut fragrance. It has good compatibility with soybean wax and palm wax. The combination of the three can effectively prolong the burning release time of aroma molecules. In the embodiment of the present application, coconut wax is selected from wax with a melting point of 42-45°C.

[0031] Palm wax is a natural plant wax extracted from the leaves of Brazilian palm trees, has a high melting point, a long burning time, and can maintain its shape and structure in a high temperature environment, and is not easy to deform or melt. In the embodiment of the present application, palm wax is selected from wax with a melting point of 82-85°C.

[0032] Through the reasonable combination of soy wax, coconut wax and palm wax, the aromatherapy candles can maintain a good shape and structure, not easy to deform and melt, which is conducive to their transportation, storage and burning. The uniform natural plant wax is not easy to produce wax liquid flowing down during the combustion process, and it will not produce black smoke and other gases that are harmful to human health. The amount of smoke is small, which can significantly improve the user experience.

[0033] In some embodiments, in the coffee carbon essential oil particles, the mass proportion of papaya seed oil is 0.5-1%, for example, it can be 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, etc., or any value within the above range. In the coffee carbon essential oil particles, the mass proportion of the composite essential oil is 0.5-2.5%, for example, it can be 0.5%, 0.7%, 0.9%, 1%, 1.2%, 1.5%, 1.8%, 2%, 2.2%, 2.5%, etc., or any value within the above range. If the content of papaya seed oil is too low, it is difficult to increase the woody frankincense aroma emitted by the scented candle, and it is not good for regulating the stability of the composite essential oil; if the content of papaya seed is too high, the adsorption amount of the composite essential oil will be too low, which is not conducive to the aroma of the scented candle to maintain a rich and lasting aroma; if the content of the composite essential oil is too high, the cost will be greatly increased, and the scented candle will emit an overly strong aroma, and the user experience will be poor.

[0034] In some embodiments, the mass ratio of the composite essential oil to the papaya seed oil is (1-3): 1, for example, 1: 1, 2: 1, 3: 1, or any value within the above range. By adjusting the ratio of the composite essential oil to the papaya seed oil, the papaya seed oil can well play the role of stabilizing the composite essential oil, prolonging the time for the aroma of the scented candle, and at the same time, due to the compounding of the papaya seed oil, the scented candle can add wood frankincense when burning, thereby improving the user experience.

[0035] In some embodiments, the steps of preparing coffee grounds carbon include:

[0036] (1) drying, crushing and sieving the coffee grounds to obtain coffee grounds powder meeting the particle size requirements;

[0037] (2) The coffee grounds powder is heat treated to obtain coffee grounds carbon.

[0038] Coffee grounds powder that has been heat-treated at high temperature forms coffee grounds carbon with a porous structure, which has a large specific surface area and good adsorption. When it is mixed with papaya seed oil and compound essential oil, it can effectively adsorb papaya seed oil and compound essential oil, thereby achieving the purpose of persistently releasing the aroma molecules of the essential oils, making the fragrance produced by the burning of scented candles more lasting; in addition, the coffee grounds carbon itself also has a special aroma of coffee, which can produce a slight aroma when the scented candle is not burned, and can also produce a special aroma when burning. The aroma molecules merge with the aroma molecules of the essential oils, thereby achieving the effect of producing a rich aroma. Moreover, the aroma produced by the burning of coffee grounds carbon and the aroma of the burning of papaya seed oil are both soft woody frankincense, which can further increase the aroma level of the essential oils and enhance the user experience. Further, the coffee grounds carbon with a porous structure can also adsorb odor molecules, thereby achieving the effect of a deodorant.

[0039] The coffee grounds powder obtained in step (1) is sieved through a 200-mesh sieve. When the coffee grounds powder reaches the particle size requirement, its specific surface area is large and its adsorption performance is good; and during the heat treatment process, as the water is removed, the coffee grounds powder forms more pores, further expanding its specific surface area and improving the adsorption effect of the essential oil.

[0040] In step (2), the heat treatment temperature is 150-300°C, and the heat treatment time is 25-45 minutes. Under the heat treatment conditions, the moisture of the coffee grounds powder can be removed, increasing its specific surface area, and retaining part of its volatile matter, so that the obtained coffee grounds carbon retains its special aroma, which is released during the burning process of the scented candle to further increase the richness of the scented candle. Moreover, the coffee aroma has the effects of relieving tension, eliminating fatigue, and reducing anxiety, which helps to enhance the user's sense of pleasure and enhance the user's experience.

[0041] In some embodiments, the composite essential oil may include one or more of sandalwood essential oil, rosin essential oil, oak essential oil, patchouli essential oil, rose essential oil, lavender essential oil, rosemary essential oil, peppermint essential oil, eucalyptus essential oil, lemon essential oil, tea tree essential oil, coffee essential oil and orange blossom essential oil; preferably, the composite essential oil of sandalwood essential oil, coffee essential oil and orange blossom essential oil has a good aroma fusion effect with coconut wax, papaya seed oil and coffee grounds carbon, and a good user experience.

[0042] In some embodiments, the surface of the coffee grounds carbon adsorbing papaya seed oil and compound essential oil is further coated with an essential oil coating liquid; the essential oil coating liquid is prepared by mixing palm wax and compound essential oil in a mass ratio of 10:(0.1-0.5). Coating the coffee grounds carbon with the essential oil coating liquid can further extend the release rate of the essential oil, so that the essential oil can be continuously and slowly released.

[0043] The composite essential oil in the coating liquid accounts for 15%-50% of the total composite essential oil, for example, it can be 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, etc., or any value within the above range.

[0044] The preparation steps of coffee essential oil particles include:

[0045] (1) Papaya seed oil is mixed with 50%-85% of a composite essential oil to obtain a mixed essential oil, and coffee grounds carbon is immersed in the mixed essential oil, and the mixture is continuously stirred and mixed, stirring is stopped after 1 hour, and the mixture is allowed to stand for 5-6 hours to obtain coffee grounds carbon essential oil particles adsorbed with papaya seed oil and the composite essential oil;

[0046] (2) After the remaining 15%-50% of the composite essential oil and liquid palm wax are mixed in a mass ratio of (0.1-0.5):10, the coffee carbon essential oil particles adsorbed with papaya seed oil and the composite essential oil are added, and the stirring is stopped after mixing for 10 minutes, and the mixture is allowed to stand to solidify to form a finished coffee essential oil particle product.

[0047] The preparation method of the tear-free scented candle of the embodiment of the present application comprises the following steps: after melting soybean wax, coconut wax and palm wax, adding coffee carbon essential oil particles, mixing evenly and cooling and solidifying to obtain the tear-free scented candle.

[0048] The present application adjusts the ratio between soy wax, coconut wax and palm wax so that the scented candle has a good shaping effect, and is not prone to softening, deformation or cracking during long-term storage and transportation. The scented candle has a good morphological structure; the wax is not likely to flow down during the combustion process, and the combustion is complete without producing excessive harmful gases and black smoke. The scented candle has good safety and environmental protection, can slowly and persistently release aroma molecules, improve the durability of the fragrance, and thus enhance the user experience and pleasure.

[0049] In order to make the present invention easier to understand, the present invention will be further described in detail below in conjunction with examples, which are merely illustrative and are not intended to limit the scope of application of the present invention. The raw materials or components used in the present invention can be obtained by commercial routes or conventional methods unless otherwise specified.

[0050] Preparation Example 1

[0051] Preparation of coffee essential oil particles:

[0052] (1) mixing sandalwood essential oil, coffee essential oil and neroli essential oil in a mass ratio of 3:1:1 to form a composite essential oil;

[0053] (2) mixing 0.5 g papaya seed oil and 0.5 g composite essential oil to obtain a mixed essential oil;

[0054] (3) 99 g of coffee ground carbon was immersed in the mixed essential oil and continuously stirred to fully absorb the mixed essential oil. After 1 hour, stirring was stopped and the mixture was allowed to stand for 5 hours to obtain coffee ground carbon essential oil particles a adsorbing papaya seed oil and composite essential oil.

[0055] Preparation Example 2

[0056] Preparation of coffee essential oil particles:

[0057] (1) mixing sandalwood essential oil, coffee essential oil and neroli essential oil in a mass ratio of 3:1:1 to form a composite essential oil;

[0058] (2) mixing 1 g of papaya seed oil and 2.5 g of the composite essential oil to obtain a mixed essential oil;

[0059] (3) 96.5 g of coffee ground carbon was immersed in the mixed essential oil and continuously stirred to fully absorb the mixed essential oil. After 1 hour, stirring was stopped and the mixture was allowed to stand for 5 hours to obtain coffee ground carbon essential oil particles b adsorbed with papaya seed oil and composite essential oil.

[0060] Preparation Example 3

[0061] Preparation of coffee essential oil particles:

[0062] (1) mixing sandalwood essential oil, coffee essential oil and neroli essential oil in a mass ratio of 3:1:1 to form a composite essential oil;

[0063] (2) 0.6 g papaya seed oil and 1.8 g composite essential oil were mixed to obtain a mixed essential oil;

[0064] (3) 97.6 g of coffee ground carbon was immersed in the mixed essential oil and continuously stirred to fully absorb the mixed essential oil. After 1 hour, stirring was stopped and the mixture was allowed to stand for 5 hours to obtain coffee ground carbon essential oil particles c adsorbing papaya seed oil and composite essential oil.

[0065] Preparation Example 4

[0066] Preparation of coffee essential oil particles:

[0067] (1) mixing sandalwood essential oil, coffee essential oil and neroli essential oil in a mass ratio of 3:1:1 to form a composite essential oil;

[0068] (2) 1.8 g papaya seed oil and 0.6 g composite essential oil were mixed to obtain a mixed essential oil;

[0069] (3) 97.6 g of coffee ground carbon was immersed in the mixed essential oil and continuously stirred to allow it to fully absorb the mixed essential oil. After 1 hour, stirring was stopped and the mixture was allowed to stand for 5 hours to obtain coffee ground carbon essential oil particles d adsorbed with papaya seed oil and composite essential oil.

[0070] Preparation Example 5

[0071] Preparation of coffee essential oil particles:

[0072] (1) mixing sandalwood essential oil, coffee essential oil and neroli essential oil in a mass ratio of 3:1:1 to form a composite essential oil;

[0073] (2) 0.6 g papaya seed oil and 0.9 g composite essential oil were mixed to obtain a mixed essential oil;

[0074] (3) 98.5 g of coffee grounds carbon was immersed in the mixed essential oil and continuously stirred to fully absorb the mixed essential oil. After 1 hour, stirring was stopped and the mixture was allowed to stand for 5 hours to obtain coffee grounds carbon essential oil particles adsorbed with papaya seed oil and composite essential oil;

[0075] (4) 0.9 g of the composite essential oil was mixed with 45 g of liquid palm wax, and then the coffee carbon essential oil particles adsorbed with papaya seed oil and the composite essential oil were added, and the stirring was stopped after mixing for 10 minutes, and the mixture was allowed to stand to solidify to form a finished coffee essential oil particle product e.

[0076] Preparation Example 6

[0077] Preparation of coffee essential oil particles:

[0078] (1) mixing sandalwood essential oil, coffee essential oil and neroli essential oil in a mass ratio of 3:1:1 to form a composite essential oil;

[0079] (2) 97.5 g of coffee ground carbon was immersed in 2.5 g of the composite essential oil and stirred continuously to allow it to fully absorb the essential oil. After 1 hour, stirring was stopped and the mixture was allowed to stand for 5 hours to obtain coffee ground carbon essential oil particles f adsorbing the composite essential oil.

[0080] Example 1

[0081] After 600g of soybean wax, 200g of coconut wax and 150g of palm wax were melted, 50g of coffee carbon essential oil particles a were added, the mixture was stirred and evenly mixed, and the mixture was cooled and solidified to obtain a tear-free aromatherapy candle.

[0082] Example 2

[0083] After 750g of soybean wax, 80g of coconut wax and 140g of palm wax were melted, 30g of coffee carbon essential oil particles a were added, stirred and mixed evenly, and then cooled and solidified to obtain a tear-free aromatherapy candle.

[0084] Example 3

[0085] After 660g of soybean wax, 250g of coconut wax and 50g of palm wax were melted, 40g of coffee carbon essential oil particles a were added, stirred and mixed evenly, and then cooled and solidified to obtain a tear-free aromatherapy candle.

[0086] Example 4

[0087] After 700g of soybean wax, 170g of coconut wax and 100g of palm wax were melted, 30g of coffee carbon essential oil particles a were added, the mixture was stirred and evenly mixed, and the mixture was cooled and solidified to obtain a tear-free aromatherapy candle.

[0088] Embodiment 5-8 is different from embodiment 4 in that the coffee carbon essential oil particles are coffee essential oil particles b, coffee essential oil particles c, coffee essential oil particles d, and coffee essential oil particles e, respectively.

[0089] Comparative Example 1

[0090] After 750g of soybean wax and 250g of coconut wax were melted, 50g of coffee carbon essential oil particles a were added, stirred and mixed evenly, and then cooled and solidified to obtain a tear-free aromatherapy candle.

[0091] Comparative Example 2

[0092] After melting 700g of soybean wax, 170g of coconut wax and 100g of palm wax, 30g of composite essential oil (sandalwood essential oil, coffee essential oil and neroli essential oil were mixed in a mass ratio of 3:1:1) was added, stirred and mixed evenly, and then cooled and solidified to obtain a tear-free aromatherapy candle.

[0093] Comparative Example 3

[0094] After melting 700g of soybean wax, 170g of coconut wax and 100g of palm wax, add 15g of composite essential oil (sandalwood essential oil, coffee essential oil and neroli essential oil mixed in a mass ratio of 3:1:1) and 15g of papaya seed oil, stir and mix evenly, and cool and solidify to obtain a tear-free aromatherapy candle.

[0095] Comparative Example 4 is different from Example 4 in that the coffee carbon essential oil particles are coffee essential oil particles f.

[0096] The scented candles prepared in Examples 1-8 and Comparative Examples 1-4 were evaluated for combustion quality, light stability, thermal stability, and fragrance residue in the same environment. The evaluation results are recorded in Table 1.

[0097] 1. Combustion quality detection

[0098] The QB / T 2119-2007 "Ordinary Candle" standard was used to evaluate the burning time determination method and indicators. The evaluation results are shown in Table 1.

[0099] The SN / T38392014 "Determination of carbon black generated during the combustion of imported and exported candles" standard was used to test the carbon black generated during the combustion of candles. The experimental results are shown in Table 1.

[0100] 2. Photostability test

[0101] The QB / T 2119-2007 "Ordinary Candle" standard was used to test the light stability test method and indicators. The experimental results are shown in Table 1.

[0102] 3. Thermal stability test

[0103] The QB / T 2119-2007 "Ordinary Candle" standard was used to test the thermal stability test method and indicators. The experimental results are shown in Table 1.

[0104] 4. Fragrance Residue Test

[0105] The samples that have been stored for 15 days after thermal stability testing are placed in the fragrance evaluation room (space about 10m 2 ), 20 aroma evaluators were selected to evaluate the residual aroma in the house after the aroma candles were burned. The aroma evaluators rated and scored the residual aroma in the evaluation room at 0.5h, 1h, 2h, 5h, 10h and 15h of burning time respectively. The rating levels are divided into 5 levels, namely: level 1 (odorless), level 2 (very light), level 3 (average), level 4 (strong), level 5 (very strong), and the average level is recorded in Table 1.

[0106] Table 1

[0107]

[0108] The data of Examples 1-8 and Comparative Example 1 show that the scented candle system composed of soy wax, coconut wax and palm wax has good molding stability, and the scented candle is not easily affected by environmental factors such as temperature and deformed or discolored. However, when the scented candle system lacks palm wax, it is easily affected by environmental factors such as temperature and deformed during storage, which is not conducive to the storage and transportation of the scented candle, and its burning time is shortened during burning, and the fragrance durability is reduced.

[0109] The data of Examples 1-8 and Comparative Examples 2 and 3 show that when the composite essential oil is not treated with coffee grounds carbon adsorption, the burning time of the scented candle is shortened and the carbon black index is increased. This may be due to the shortened burning time and the accelerated burning speed, resulting in incomplete combustion. At the same time, its aroma molecules are released during the storage process, so it is difficult to maintain the durability of its aroma release during combustion, and the aroma residual level is significantly reduced. In the absence of papaya seed oil, the aroma residual durability is further reduced.

[0110] The data of Examples 1-8 and Comparative Examples 3 and 4 show that papaya seed oil has the effect of improving the stability of essential oils and can slow down the release rate of essential oils during storage, thereby enabling them to maintain good fragrance persistence during the combustion process.

[0111] The data from Examples 1-4 show that when the mass ratio of soybean wax, coconut wax and palm wax is (4-8):(1-2):(1-2), the scented candle can not only maintain its appearance, but also slowly and persistently release essential oils after long-term storage, thereby maintaining good fragrance durability of the scented candle.

[0112] The data of Examples 1-8 show that after the coffee essential oil particles adsorb the composite essential oil and papaya seed oil, they are then coated with a coating liquid containing palm wax, which can not only further extend the burning time of the scented candle, but also further slow down the release rate of the essential oil, thereby further improving the fragrance durability of the scented candle.

[0113] It should be noted that the embodiments described above are only used to explain the present application and do not constitute any limitation to the present application. The present application is described with reference to typical embodiments, but it should be understood that the words used therein are descriptive and explanatory words, rather than restrictive words. The present application may be modified as specified within the scope of the claims of the present application, and the present application may be revised without departing from the scope and spirit of the present application. Although the present application described therein relates to specific methods, materials and embodiments, it does not mean that the present application is limited to the specific examples disclosed therein. On the contrary, the present application can be extended to all other methods and applications with the same functions.

Claims

1. A tear-free aromatherapy candle, characterized in that: The raw materials include the following components: 60-75% soybean wax, 8-25% coconut wax, 5-15% palm wax, 3-5% coffee charcoal essential oil particles; The coffee carbon essential oil particles are prepared by adsorbing a composite of papaya seed oil and composite essential oil on coffee ground carbon.

2. The tear-free scented candle according to claim 1, characterized in that: The mass proportion of the papaya seed oil in the coffee carbon essential oil particles is 0.5-1%; The mass proportion of the composite essential oil in the coffee carbon essential oil particles is 0.5-2.5%.

3. The tear-free scented candle according to claim 2, characterized in that: The mass ratio of the composite essential oil to the papaya seed oil is (1-3):

1.

4. The tear-free scented candle according to claim 1, characterized in that: The preparation steps of the coffee grounds carbon include: The coffee grounds are crushed and sieved to obtain coffee grounds powder; Coffee grounds carbon is obtained by heat treating coffee grounds powder.

5. The tear-free scented candle according to claim 4, characterized in that: The obtained coffee grounds powder was passed through a 200-mesh sieve.

6. The tear-free scented candle according to claim 4, characterized in that: The heat treatment temperature is 150-300° C., and the heat treatment time is 25-45 minutes.

7. The tear-free scented candle according to claim 1, characterized in that: The surface of coffee ground carbon adsorbing papaya seed oil and composite essential oil was also coated with essential oil coating liquid; The essential oil coating liquid is prepared by mixing palm wax and composite essential oil in a mass ratio of 10:(0.1-0.5).

8. The tear-free scented candle according to claim 6, characterized in that: The composite essential oil in the coating liquid accounts for 15%-50% of the total composite essential oil.

9. The tear-free scented candle according to claim 1, characterized in that: The mass ratio of the soybean wax, coconut wax and palm wax is (4-8):(1-2):(1-2).

10. A method for preparing a tear-free scented candle, characterized in that: The following steps are involved: After melting soybean wax, coconut wax and palm wax, add coffee charcoal essential oil particles, mix well and cool and solidify to make a tear-free aromatherapy candle.

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