Artificial flower capable of emitting fragrance and preparation method of artificial flower

Abstract

The invention discloses a fragrance-emitting artificial flower and a preparation method thereof. Petals of the fragrance-emitting artificial flower are prepared from hydroxymethyl-terminated polydimethylsiloxane, hydrogen-containing silicone oil, hydroxyl silicone oil, a platinum catalyst and the like. According to the invention, hydroxymethyl-terminated polydimethylsiloxane is used as a base adhesive, hydrogen-containing silicone oil is used as a foaming agent to prepare the foaming material with silica gel petals as an open pore structure, and the pores can provide channels for emission of aromatic molecules; the silane coupling agent is used for modifying the montmorillonite, so that the dispersity and compatibility of the montmorillonite in the base rubber can be improved, the montmorillonite can be uniformly dispersed, and the mechanical properties such as strength and tensile strength can be better enhanced; the montmorillonite with the porous structure can be used for highly loading the nanocapsule coated with the spice and can play a role in protecting and slowly releasing the spice, so that the volatilization of aroma molecules in the spice is slowed down or controlled, the emission and retention time of aroma of the spice is prolonged, and experiments prove that the aroma emission time of the petal prepared by the preparation method disclosed by the invention can be more than 4 months.

Description

Technical Field

[0001] The invention relates to the technical field of traditional Chinese medicines, and in particular to an artificial flower emitting fragrance and a preparation method thereof. Background Art

[0002] Artificial flowers, also known as artificial flowers, are common decorative items in modern people's lives. Artificial flowers have become a common item. Whether it is an opening ceremony, a wedding banquet, or an office or home environment, there are artificial flowers. Their appearance is similar to real flowers, and they have a very long service life, which improves the problem of the short shelf life of fresh flowers. Artificial flowers have developed from the original paper, cloth, yarn, velvet and other materials to polymer plastic materials or silicone materials. However, the artificial flowers made of silicone on the market generally cannot emit fragrance, or even if they can emit fragrance, because their fragrance mostly comes from the perfume sprayed on the surface of the petals, the fragrance lasts for a short time and cannot meet the needs. Summary of the invention

[0003] Therefore, based on the above background, the present invention provides an artificial flower that emits fragrance and a preparation method thereof. The nanocapsules that encapsulate the fragrance loaded by modified montmorillonite can protect the fragrance and provide a sustained release effect. The silica gel substrate with an open-pore foaming structure can provide a channel for the emission of aromatic molecules. The petals of the artificial flower prepared in this way can achieve a long-lasting fragrance emission.

[0004] The technical solution provided by the present invention is:

[0005] A fragrance-emitting artificial flower, the petals of which are made of the following raw materials in parts by weight:

[0006] 100 parts of hydroxymethyl-terminated polydimethylsiloxane, 15 parts of hydrogen-containing silicone oil, 5-10 parts of hydroxy silicone oil, 0.5-1.5 parts of platinum catalyst, 0.5-1.5 parts of tetramethyltetravinylcyclotetrasiloxane, 0-10 parts of silica gel masterbatch, 15-35 parts of montmorillonite, and 10-15 parts of vinyl MQ resin.

[0007] Furthermore, 100 parts of hydroxymethyl-terminated polydimethylsiloxane, 18 parts of hydrogen-containing silicone oil, 5 parts of hydroxy silicone oil, 1 part of platinum catalyst, 1 part of tetramethyltetravinylcyclotetrasiloxane, 2 parts of silica gel masterbatch, 30 parts of montmorillonite, and 12 parts of vinyl MQ resin.

[0008] Furthermore, the montmorillonite is made of montmorillonite modified by a silane coupling agent and nano-capsule fragrance.

[0009] Furthermore, the coupling agent used for the montmorillonite modified by the silane coupling agent can be selected from at least one of N-dodecyltrimethoxysilane, hexadecyltrimethoxysilane, KH570 and KH108.

[0010] Furthermore, the preparation method of the nanocapsule fragrance comprises the following steps:

[0011] S1: stirring and mixing the emulsifier and the flavor to prepare an emulsified system;

[0012] S2: Under stirring conditions, the chitosan solution having the same volume as the emulsifier is gradually added dropwise into the upward emulsification system to prepare a mixed solution containing the nanocapsule fragrance.

[0013] Furthermore, the emulsifier may be at least one of Tween-20, Tween-40, Tween-60, Tween-80, Tween-85, EL40, CO-40 and AEO9.

[0014] Further, the mass ratio of the emulsifier to the flavor is (5-7): (3-5);

[0015] Furthermore, the fragrance can be selected from one or more of plant fragrances such as lavender fragrance, rose fragrance, jasmine fragrance, osmanthus fragrance, lemon fragrance, citronella fragrance, gardenia fragrance, violet fragrance, etc.

[0016] Furthermore, the chitosan aqueous solution in step S2 has a mass concentration of 1 wt %, and is prepared from water-soluble chitosan;

[0017] The water-soluble chitosan is selected from at least one of carboxymethyl chitosan, chitosan sulfate, chitosan oligosaccharide and chitosan sulfate.

[0018] Furthermore, the preparation method of montmorillonite comprises the following steps:

[0019] ① adding the montmorillonite modified by the silane coupling agent to the mixed solution prepared in step S2, and stirring with ultrasonic wave for not less than 30 minutes;

[0020] ② Then filter, take out the filtered solid, vacuum dry it, and seal it for later use.

[0021] Based on the same inventive concept, the present invention also provides a method for preparing a method for emitting fragrance artificial flowers, and the method for preparing petals thereof comprises the following steps:

[0022] 1) taking each component according to the amount, and mixing hydroxymethyl-terminated polydimethylsiloxane, hydrogen-containing silicone oil, hydroxy silicone oil, silica gel masterbatch, montmorillonite, and vinyl MQ resin uniformly;

[0023] 2) adding a platinum catalyst and tetramethyltetravinylcyclotetrasiloxane to the mixture in step 1) and stirring evenly;

[0024] 3) Add the mixture in step 2) into the petal mold, wait for the reaction to be complete, demould and trim the edges.

[0025] The above technical solution has the following beneficial effects:

[0026] The present invention uses hydroxymethyl-terminated polydimethylsiloxane as a base rubber, and a silicone rubber prepared by using hydrogen-containing silicone oil as a crosslinking agent and a foaming agent as a foaming material with an open-cell structure. The open-cell pores, especially the open-cell pores penetrating to the surface, can provide channels for the emission of aromatic molecules of spices, so that the aroma of the spices can be continuously emitted. The montmorillonite modified by a silane coupling agent can increase its dispersibility and compatibility in the base rubber, so that it can be evenly dispersed, so as to better enhance mechanical properties such as strength and tensile strength. The montmorillonite with a porous structure can wrap nanocapsules with spices at a high load, which can protect the spices to a certain extent and can slow-release the aroma components, thereby slowing down or controlling the volatilization of the aroma molecules in the spices and prolonging the aroma emission and fragrance retention time of the spices. Experimental verification shows that the fragrance emission time of the petals prepared by the present invention can be more than 4 months. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Unless otherwise specified, the experimental methods used in the following examples are conventional methods.

[0029] Unless otherwise specified, the materials and reagents used in the following examples can be obtained from commercial sources.

[0030] For example, the following platinum catalyst (CAT-PL-56) is from Shin-Etsu Co., Ltd., Japan;

[0031] Hydroxymethyl-terminated polydimethylsiloxane, purchased from Hubei Xinyuhong Biopharmaceutical Technology Co., Ltd., with an average molecular weight of 92;

[0032] Montmorillonite is calcium-based montmorillonite purchased from Chuncheng Bentonite Factory in Sishui County.

[0033] Hydrogenated silicone oil (active hydrogen content 0.7%), purchased from Shenzhen Lianhuan Organic Silicone Materials Co., Ltd.;

[0034] Hydroxy silicone oil (GY-203), purchased from Zhonghao Chenguang Chemical Research Institute Co., Ltd.;

[0035] Vinyl MQ resin (vinyl content 2%) was purchased from Guangzhou Jucheng Zhaoye Organic Silicone Raw Materials Co., Ltd.

[0036] Embodiment 1: A fragrance-emitting artificial flower, whose petals are made of the following raw materials in parts by weight:

[0037] 100 parts of hydroxymethyl-terminated polydimethylsiloxane, 15 parts of hydrogen-containing silicone oil, 5 parts of hydroxy silicone oil, 1 part of platinum catalyst, 1 part of tetramethyltetravinylcyclotetrasiloxane, 2 parts of silica gel masterbatch, 30 parts of montmorillonite, and 12 parts of vinyl MQ resin.

[0038] The montmorillonite is prepared from montmorillonite modified by a silane coupling agent and nano-capsule fragrance.

[0039] The coupling agent used in the montmorillonite modified by the silane coupling agent is N-dodecyltrimethoxysilane.

[0040] Modification of montmorillonite using a silane coupling agent is a conventional technique in the art, and thus will not be described in detail.

[0041] The preparation method of the nanocapsule comprises the following steps:

[0042] S1: stirring and mixing the emulsifier and the fragrance to prepare an emulsified system; the fragrance in this step is selected as cosmetic grade lavender fragrance (essential oil), which is purchased from Huizhou Lvya Biotechnology Co., Ltd.

[0043] S2: Under stirring conditions, the chitosan solution having the same volume as the emulsifier is gradually added dropwise into the upward emulsification system to prepare a mixed solution containing the nanocapsule fragrance.

[0044] The emulsifier is CO-40.

[0045] The mass ratio of the emulsifier to the flavor is 6:4;

[0046] The chitosan aqueous solution in step S2 has a mass concentration of 1 wt %, and is prepared from water-soluble chitosan;

[0047] The water-soluble chitosan is carboxymethyl chitosan.

[0048] The preparation method of montmorillonite comprises the following steps:

[0049] ① adding the montmorillonite modified by the silane coupling agent to the mixed solution prepared in step S2, and stirring with ultrasonic wave for not less than 30 minutes; in the specific implementation, the montmorillonite modified by the silane coupling agent is completely immersed in the mixed solution;

[0050] ② Then filter, take out the filtered solid, vacuum dry it, and seal it for later use.

[0051] The preparation method of the petals is as follows:

[0052] 1) taking each component according to the amount, and mixing hydroxymethyl-terminated polydimethylsiloxane, hydrogen-containing silicone oil, hydroxy silicone oil, silica gel masterbatch, montmorillonite, and vinyl MQ resin uniformly;

[0053] 2) adding a platinum catalyst and tetramethyltetravinylcyclotetrasiloxane to the mixture in step 1) and stirring evenly;

[0054] 3) Add the mixture in step 2) into the petal mold, wait for the reaction to be complete, demould and trim the edges.

[0055] The thickness of the prepared petals is 2-3 mm.

[0056] Embodiment 2: A fragrance-emitting artificial flower. Compared with Embodiment 1, the petals of this embodiment are made of the following raw materials in parts by weight:

[0057] 100 parts of hydroxymethyl-terminated polydimethylsiloxane, 20 parts of hydrogen-containing silicone oil, 5 parts of hydroxy silicone oil, 1 part of platinum catalyst, 1 part of tetramethyltetravinylcyclotetrasiloxane, 2 parts of silica gel masterbatch, 30 parts of montmorillonite, and 12 parts of vinyl MQ resin.

[0058] The other operation steps are the same as those in Example 1.

[0059] Embodiment 3: A fragrance-emitting artificial flower. Compared with Embodiment 1, the petals of this embodiment are made of the following raw materials in parts by weight:

[0060] 100 parts of hydroxymethyl-terminated polydimethylsiloxane, 10 parts of hydrogen-containing silicone oil, 5 parts of hydroxy silicone oil, 1 part of platinum catalyst, 1 part of tetramethyltetravinylcyclotetrasiloxane, 2 parts of silica gel masterbatch, 30 parts of montmorillonite, and 12 parts of vinyl MQ resin.

[0061] The other operation steps are the same as those in Example 1.

[0062] Comparative Example 1: A fragrance-emitting artificial flower, whose petals are made of the following raw materials in parts by weight:

[0063] 100 parts of hydroxymethyl-terminated polydimethylsiloxane, 15 parts of hydrogen-containing silicone oil, 5 parts of hydroxy silicone oil, 1 part of platinum catalyst, 1 part of tetramethyltetravinylcyclotetrasiloxane, 2 parts of silica gel masterbatch, 30 parts of montmorillonite, and 12 parts of vinyl MQ resin.

[0064] The silane coupling agent in this embodiment is N-dodecyltrimethoxysilane.

[0065] Modification of montmorillonite using a silane coupling agent is a conventional technique in the art, and thus will not be described in detail.

[0066] The montmorillonite is made of montmorillonite modified by a silane coupling agent and perfume.

[0067] The preparation method of montmorillonite comprises the following steps:

[0068] ① Under stirring conditions, the same amount of fragrance as in step S1 of Example 1 (added within 3 minutes) was added dropwise onto the modified montmorillonite, and stirring was continued for 5 minutes, and then the mixture was sealed and stored for later use.

[0069] The preparation method of the petals is as follows:

[0070] 1) taking each component according to the amount, and mixing hydroxymethyl-terminated polydimethylsiloxane, hydrogen-containing silicone oil, hydroxy silicone oil, silica gel masterbatch, montmorillonite, and vinyl MQ resin uniformly;

[0071] 2) adding a platinum catalyst and tetramethyltetravinylcyclotetrasiloxane to the mixture in step 1) and stirring evenly;

[0072] 3) Add the mixture in step 2) into the petal mold, wait for the reaction to be complete, demould and trim the edges.

[0073] The petal samples prepared in Examples 1 to 3 and Comparative Example 1 were placed in air at 20-25°C and 40-45% humidity, and the fragrance of the petal samples was detected using an electronic nose on the first day, second month, third month, fourth month, fifth month, and sixth month after preparation.

[0074] The electronic nose of this embodiment uses the PEN3 portable electronic nose (AIRSENSE, Germany) and adopts the headspace sampling method, as shown below:

[0075] Cut 0.2g of petal sample each time, put it into a clean 10ml headspace bottle, seal it with a headspace cap and gasket, and set aside. Take three samples each time.

[0076] Electronic nose detection conditions: the sample was incubated in an incubator (60°C) for 5 minutes, the gas at the top of the injection bottle was aspirated and tested on the machine, each sample was tested 3 times, and the response results of aroma substances are shown in Table 1 below.

[0077] Group Month 1 Month 2 Month 3 Month 4 Month 5 Month 6 Example 1 Responsive Responsive Responsive Responsive Responsive Responsive Example 2 Responsive Responsive Responsive Responsive Responsive Responsive Example 3 Responsive Responsive Responsive Responsive Responsive Responsive Comparative Example 1 Responsive No response No response No response No response No response

[0078] The higher the response value of the electronic nose sensor, the stronger the fragrance of the sample. The response values ​​of the electronic noses of Examples 1 to 3 were tested: Example 2> Example 1> Example 3. The reason is that the porosity of the petal sample prepared in Example 2 is greater than that of Example 1, while the porosity of Example 3 is the smallest.

[0079] The petal samples of Comparative Example 1 were tested every day using the electronic nose sensor. As time went by, the response value of the electronic nose became smaller and there was no response on the 10th day.

[0080] The present invention and its implementation methods are described above, and such description is not restrictive, and the actual methods are not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design implementation methods and embodiments similar to the technical solution without creativity, which should all fall within the protection scope of the present invention.

Claims

1. A fragrance-emitting artificial flower, characterized in that: Its petals are made of the following raw materials in parts by weight: 100 parts of hydroxymethyl-terminated polydimethylsiloxane, 5-25 parts of hydrogen-containing silicone oil, 5-10 parts of hydroxy silicone oil, 0.5-1.5 parts of platinum catalyst, 0.5-1.5 parts of tetramethyltetravinylcyclotetrasiloxane, 0-10 parts of silica gel masterbatch, 15-35 parts of montmorillonite, and 10-15 parts of vinyl MQ resin.

2. The artificial flower emitting fragrance according to claim 1, characterized in that: Its petals are made of the following raw materials in parts by weight: 100 parts of hydroxymethyl-terminated polydimethylsiloxane, 15 parts of hydrogen-containing silicone oil, 5 parts of hydroxy silicone oil, 1 part of platinum catalyst, 1 part of tetramethyltetravinylcyclotetrasiloxane, 2 parts of silica gel masterbatch, 30 parts of montmorillonite, and 12 parts of vinyl MQ resin.

3. The artificial flower emitting fragrance according to claim 1 or 2, characterized in that: The montmorillonite is prepared from montmorillonite modified by a silane coupling agent and nano-capsule fragrance.

4. The artificial flower emitting fragrance according to claim 3, characterized in that: The coupling agent used for the montmorillonite modified by the silane coupling agent is selected from at least one of N-dodecyltrimethoxysilane, hexadecyltrimethoxysilane, KH570 and KH108.

5. The artificial flower emitting fragrance according to claim 3, characterized in that: The preparation method of the nanocapsule fragrance comprises the following steps: S1: stirring and mixing the emulsifier and the flavor to prepare an emulsified system; S2: Under stirring conditions, the chitosan solution having the same volume as the emulsifier is gradually added dropwise into the upward emulsification system to prepare a mixed solution containing the nanocapsule fragrance.

6. The artificial flower emitting fragrance according to claim 5, characterized in that: The emulsifier is selected from at least one of Tween-20, Tween-40, Tween-60, Tween-80, Tween-85, EL40, CO-40 and AEO9.

7. The artificial flower emitting fragrance according to claim 6, characterized in that: The mass ratio of the emulsifier to the fragrance is (5-7):(3-5).

8. The artificial flower emitting fragrance according to claim 5, characterized in that: The mass concentration of the chitosan aqueous solution in step S2 is 1wt%; The chitosan is selected from at least one of carboxymethyl chitosan, chitosan sulfate, chitosan oligosaccharide and chitosan sulfate.

9. The artificial flower emitting fragrance according to claim 5, characterized in that: The preparation method of montmorillonite comprises the following steps: ① adding the montmorillonite modified by the silane coupling agent to the mixed solution prepared in step S2 of claim 4, and stirring with ultrasonic wave for not less than 30 minutes; ② Then filter, take out the filtered solid, vacuum dry it, and seal it for later use.

10. The method for preparing a fragrance-emitting artificial flower according to any one of claims 1 to 9, characterized in that: The preparation method of the petals comprises the following steps: 1) taking each component according to the amount, and mixing hydroxymethyl-terminated polydimethylsiloxane, hydrogen-containing silicone oil, hydroxy silicone oil, silica gel masterbatch, montmorillonite, and vinyl MQ resin uniformly; 2) adding a platinum catalyst and tetramethyltetravinylcyclotetrasiloxane to the mixture in step 1) and stirring evenly; 3) Add the mixture in step 2) into the petal mold, wait for the reaction to be complete, demould and trim the edges.