A kind of Baizhi bead health-care product and preparation method thereof

Abstract

The present invention discloses a Baizhi bead health product and a preparation method thereof. The Baizhi bead health product comprises Baizhi beads formed by grinding Baizhi roots and a protective layer coated on the surface of the Baizhi beads; the protective layer is a porous polymer composite material composed of graphene oxide-modified silica, epoxy resin, a curing agent, and nitrile rubber. The Baizhi bead health product directly forms the Baizhi root into a bead-shaped body and coats the surface of the bead with a protective layer. This avoids the problem of rapid volatilization of Baizhi volatile oil caused by grinding the Baizhi, and has health benefits such as relieving headaches, allergic rhinitis, and preventing viruses. It also reduces the probability of Baizhi being easily scratched or damaged due to its soft texture, allowing the Baizhi beads to be worn for long periods of time, achieving long-term and effective health benefits.

Description

Technical Field

[0001] The present invention relates to the field of health care products, in particular to a angelica bead health care product and a preparation method thereof. Background Art

[0002] Angelica dahurica Angelica dahurica(Fisch.ex Hoffm.)Benth.et Hook.f. The traditional medicinal part is its dried root, and China has a long history of using angelica. The "Shennong Bencao Jing" and "Mingyi Bielu" document that angelica has wind-removing properties, particularly effective in treating symptoms of exogenous wind-evil attacking the head. Later medical texts, such as the "Hejiju Fang," also mention that angelica can be combined with other herbs to treat stroke. Li Dongyuan's "Yongyao Faxiang" also mentions that angelica has a clearing effect and can treat wind-cold and wind-heat.

[0003] Angelica dahurica volatile oil has good development potential and application prospects. Angelica dahurica volatile oil has four major functions: inhibiting melanin, anti-oxidation, analgesia, and anti-allergy. In the study of Lin S et al. (doi:10.1016 / i.ijbiomac.2013.04.008.), it was shown that Angelica dahurica volatile oil can dilate arteries, make blood flow to the face, improve blood circulation, and thus achieve the effect of improving skin pigmentation and lightening spots; Nie Hong et al. (Effects of Angelica dahurica volatile oil on neurotransmitters in pain model rats. Pharmacology and Clinic of Traditional Chinese Medicine, 2002, 18(3): 11-14.) showed that Angelica dahurica volatile oil can increase the pain threshold of rats in the formaldehyde-induced pain model, and believed that EOAD exerts analgesic effect by significantly reducing the content of monoamine neurotransmitters in peripheral blood, increasing the content of central dopamine and 5-hydroxytryptamine, and reducing the content of norepinephrine and 5-hydroxyindoleacetic acid.

[0004] In order to better utilize the corresponding effects of Angelica dahurica volatile oil, there have been records and applications of people using Angelica dahurica as a raw material to make wearable beads with health-care functions. For example, patents CN107960709A, CN206165999U, CN104172679A, etc. all use Angelica dahurica as a raw material to make beads with health-care functions, which can effectively utilize the special effects of its volatile oil to achieve certain health-care effects. Existing angelica root bead health products can be roughly divided into two categories: the first is made by crushing angelica root and mixing it with a variety of traditional Chinese medicine materials with health benefits. Although this type of product can also release volatile oil, the volatile oil of the crushed angelica root evaporates too quickly, causing the volatile oil in the product to evaporate completely quickly, thus losing its health benefits; the second type is directly polishing the root of angelica root into beads. Although this type of product can release volatile oil for a long time and exert health benefits, due to the large amount of starch in the root of angelica root, the texture is relatively soft and easily scratched, damaged, and stained, making it not conducive to long-term wear and storage, and also not conducive to the sustained health benefits. Therefore, how to ensure that the angelica root beads can effectively exert their health benefits for a long time has become the key to their large-scale application. Summary of the Invention

[0005] The purpose of the present invention is to overcome the defect of existing angelica bead health-care products that the volatile oil evaporates too quickly, which is not conducive to long-term wearing and storage, resulting in the inability to exert long-term and effective health-care effects. A angelica bead health-care product and a preparation method thereof are proposed. The angelica bead health-care product directly makes the angelica root into a bead-shaped body and wraps the surface of the bead-shaped body with a protective layer, thereby avoiding the problem of too fast volatilization of the angelica volatile oil caused by crushing the angelica, and reducing the probability of being scratched or damaged due to the soft texture of the angelica, so that the angelica beads can be worn and used for a long time, and exert long-term and effective health-care effects.

[0006] In order to achieve the above-mentioned purpose of the invention, the present invention provides a angelica bead health care product, which includes angelica beads polished from angelica roots and a protective layer coated on the surface of the angelica beads; the protective layer is a porous polymer composite material composed of graphene oxide-modified silica, epoxy resin, curing agent and nitrile rubber.

[0007] Among them, preferably, the thickness of the protective layer is 0.5-2.0 mm; the preferred protective layer thickness has good protection effect, small amount of raw materials used, moderate volatilization rate of Angelica dahurica volatile oil, and longer duration of the health care effect of Angelica dahurica beads. If the thickness is too thin, it is easy to break, and if the thickness is too thick, it is not conducive to the volatilization of the volatile oil; most preferably, the thickness of the protective layer is 1-1.5 mm.

[0008] Among them, in the porous polymer composite material, graphene oxide in graphene oxide modified silica manifests as toughness, and silica manifests as hardness. Therefore, graphene oxide modified silica mainly gives hardness and toughness to the protective layer; epoxy resin, as the matrix material of the protective layer, mainly plays the role of bonding and providing hardness; nitrile rubber mainly plays the role of giving toughness to the protective layer and forming holes due to curing shrinkage, which is the main factor affecting whether holes can be formed and the size of the hole diameter; the curing agent mainly acts on the curing of epoxy resin and nitrile rubber, thereby affecting the formation and hardness of holes on the protective layer. At the same time, the faster the curing speed, the smaller the holes. The easier the hole is to form, the smaller the pore size; preferably, in the porous polymer composite material, the mass ratio of epoxy resin, curing agent, nitrile rubber and graphene oxide modified silica is 80-120:25-35:5-30:5-10; with the preferred mass ratio, the hardness of the porous polymer composite material is higher, the number of surface pores is moderate, the volatilization rate of angelica dahurica volatile oil is moderate, and the health care effect of angelica dahurica beads is better and lasts longer; most preferably, in the porous polymer composite material, the mass ratio of epoxy resin, curing agent, nitrile rubber and graphene oxide modified silica is 100:30:18:7.

[0009] Among them, preferably, the curing agent is polyetheramine D230; the preferred type of curing agent has a fast curing speed, high hardness, and moderate surface porosity.

[0010] Among them, the porous polymer composite material also includes a curing accelerator; by adding the curing accelerator, the protective layer can be hardened faster, the curing time can be shortened, and rapid curing is conducive to the formation of more pores, but the pore size will become smaller. Adding an appropriate curing accelerator can effectively increase the number of pores on the protective layer of the angelica beads; more preferably, the curing accelerator is 2,4,6-tris(dimethylaminomethyl)phenol.

[0011] Among them, preferably, the amount of the curing accelerator is 0-1% of the mass of the porous polymer composite material; the preferred amount has a better effect of promoting curing, and a smaller amount can result in higher hardness.

[0012] Among them, preferably, the center of the angelica bead has a through hole with a diameter of 1-5 mm; the provision of the through hole facilitates the wearing of the angelica bead health care product.

[0013] In order to achieve the above-mentioned object of the invention, the present invention further provides a method for preparing a Baizhizhu health care product, comprising the following steps:

[0014] (1) Preparation of Angelica dahurica beads: remove the epidermis of the Angelica dahurica root, make beads and wash them;

[0015] Preparation of protective layer slurry: After coupling treatment of silica powder with a silane coupling agent, water is added to prepare a suspension; graphene oxide aqueous solution is added to the suspension, stirred and reacted at room temperature for 1-3 hours, and then dried to obtain graphene oxide-modified silica powder; the graphene oxide-modified silica powder and a curing agent are added to a mixture of epoxy resin and nitrile rubber, and stirred evenly to obtain a protective layer slurry;

[0016] (2) The beads obtained in step (1) are coated with the protective layer slurry prepared in step (1) and solidified to obtain the Angelica dahurica beads health product.

[0017] The present invention includes a preparation method of an angelica bead health-care product. The method comprises the steps of first separately preparing angelica bead bodies and a protective layer slurry, and then coating and solidifying the angelica bead bodies with the protective layer slurry. The angelica bead health-care product can be prepared quickly, efficiently and stably, and the prepared product has the advantages of high hardness, high smoothness and good wear resistance, thereby facilitating large-scale and industrialized production of the angelica bead health-care product.

[0018] Among them, preferably, step (1) also includes surface treatment of the beads; the surface treatment method includes: placing the cleaned beads into an ethanol solution for ultrasonic treatment; through the surface treatment, the surface of the beads can have more attachment points, which is conducive to the wrapping of the protective layer slurry and has a better protection effect on the beads wrapped inside. At the same time, more pits are formed on the surface of the beads after ultrasonic treatment, which is more conducive to the formation of holes when the protective layer is cured, and can increase the number of holes on the protective layer.

[0019] Preferably, the volume percentage of ethanol in the ethanol solution is 70-80%; the preferred concentration of the ethanol solution has a better surface treatment effect on the beads.

[0020] Preferably, the frequency of the ultrasonic treatment is 20-60 kHz, the temperature is 15-25° C., and the time is 15-25 min. The preferred ultrasonic treatment conditions have a better surface treatment effect on the beads.

[0021] Among them, preferably, in step (1), the silane coupling agent is 3-aminopropyltriethoxysilane coupling agent (KH550); the preferred silane coupling agent has a better coupling effect and is also more conducive to improving the hardness of the protective layer of the Angelica dahurica beads, and has a better protective effect on the Angelica dahurica beads.

[0022] Preferably, in step (1), the amount of silane coupling agent used is 3-6% of the mass of the silicon dioxide powder; the preferred amount of coupling agent has good coupling effect and requires less amount.

[0023] Preferably, in step (1), the particle size of the silicon dioxide powder is 20-40 mm; the preferred particle size has good dispersibility, and the formed protective layer has high hardness, high smoothness and good wear resistance.

[0024] Among them, preferably, in step (1), the coupling treatment method is: stirring the silica powder and the coupling agent at a temperature of 80-85°C for 90-150 minutes; the preferred coupling treatment method is simple and has a good coupling effect.

[0025] Among them, preferably, in step (1), the amount of graphene oxide used is 1-7% of the mass of the silicon dioxide powder; the preferred amount, the reaction is more thorough, the silicon dioxide modification effect is good, and the small amount used, the formed protective layer has better hardness and toughness.

[0026] Among them, preferably, in step (2), the curing treatment temperature is 60-80°C and the time is 2-5 hours. The preferred curing conditions have good curing effect and take less time.

[0027] Preferably, step (2) further includes punching holes in the beads after the solidification treatment; after punching holes in the beads, they are more convenient to wear.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The angelica root health product of the present invention directly uses the angelica root as the angelica root, avoiding the problem of rapid volatilization of the angelica volatile oil caused by crushing, and has a long-lasting and effective health care effect;

[0030] 2. The angelica beads health care product of the present invention utilizes a composite material with air permeability and high hardness as a protective layer, thereby ensuring the effective volatilization of the angelica volatile oil and protecting the angelica beads from being scratched and damaged, which is beneficial for the long-term wearing and use of the angelica beads in life.

[0031] 3. The Baizhizhu health-care product of the present invention can adjust the number of pores on the protective layer by adjusting the ratio and type of each raw material in the composite material, thereby adjusting the volatilization rate of the Baizhi volatile oil, so that the Baizhizhu health-care product has better and longer-lasting health-care effects.

[0032] 4. The preparation method of the angelica dahurica health-care product of the present invention can quickly, efficiently and stably prepare the angelica dahurica health-care product, and the prepared product has the advantages of high hardness, high smoothness and good wear resistance, which is conducive to the large-scale and industrialized production of the angelica dahurica health-care product. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a SEM image of the Baizhizhu health product prepared in Example 1 of the present invention;

[0034] Figure 2 SEM images of treated beads obtained in the examples of the present invention (a is Example 3; b is Example 1);

[0035] Figure 3 This is a SEM image of the Baizhizhu health product prepared in Comparative Example 4 of the present invention;

[0036] Figure 4 This is a SEM image of the Angelica dahurica health product prepared in Example 2 of the present invention. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below in conjunction with test examples and specific embodiments. However, this should not be understood as limiting the scope of the present invention to the following embodiments, and all technologies implemented based on the present invention fall within the scope of the present invention.

[0038] Example 1

[0039] (1) Preparation of Angelica dahurica beads: 10 beads (5.0 mm in diameter) were prepared by removing the epidermis from the root of Angelica dahurica. The beads were washed with ultrapure water for 15 seconds, then placed in a 75% by volume ethanol solution for ultrasonic treatment (20°C, 30kHz, 300W, 20min), and finally dried at 50°C to obtain surface-treated beads ( Figure 2 b).

[0040] Preparation of protective layer slurry: After coupling treatment (82°C, 1000 r / min, 100 min) of silica powder (particle size 30 mm) with a silane coupling agent (5% of the mass of silica powder, KH550), a 0.2 g / L aqueous solution of graphene oxide (5% of the mass of silica powder) was added to the suspension, stirred and mixed (25°C, 800 r / min, 2 h) until uniform, and then vacuum dried (80°C, 3 h). ), obtaining graphene oxide modified silica powder; adding the graphene oxide modified silica powder, a curing agent (polyetheramine D230) and a curing accelerator (2,4,6-tris(dimethylaminomethyl)phenol) to a mixture of epoxy resin and nitrile rubber (the mass ratio of epoxy resin, curing agent, nitrile rubber, graphene oxide modified silica and curing accelerator is 100:30:18:7:0.5), and stirring evenly to obtain a protective layer slurry;

[0041] (2) The beads obtained in step (1) were coated with the protective layer slurry prepared in step (1) (the protective layer thickness was 1.0 mm) and cured (70°C, 3 h) to obtain the Baizhi beads health product ( Figure 1 ).

[0042] Example 2

[0043] (1) Preparation of Angelica dahurica beads: The epidermis of the root of Angelica dahurica was removed and 10 beads (diameter 5.0 mm) were prepared. The beads were washed with ultrapure water for 15 seconds, then placed in a 75% by volume ethanol solution and ultrasonically treated (20°C, 30 kHz, 300 W, 20 min), and finally dried at 50°C to obtain surface-treated beads.

[0044] Preparation of protective layer slurry: After coupling treatment (82°C, 1000 r / min, 100 min) of silica powder (particle size of 30 mm) with a silane coupling agent (5% of the mass of silica powder, KH550), a 0.2 g / L aqueous solution of graphene oxide (5% of the mass of silica powder) was added to the suspension, and the mixture was stirred and mixed (25°C, 800 r / min, 2 h) until uniform, and then vacuum dried (80°C, 3 h) to obtain graphene oxide-modified silica powder; the graphene oxide-modified silica powder and a curing agent (polyetheramine D230) were added to a mixture of epoxy resin and nitrile rubber (the mass ratio of epoxy resin, curing agent, nitrile rubber and graphene oxide-modified silica was 100:30:18:7), and stirred evenly to obtain a protective layer slurry;

[0045] (2) The beads obtained in step (1) were coated with the protective layer slurry prepared in step (1) (the protective layer thickness was 1.0 mm) and cured (70° C., 5 h) to obtain the Baizhi beads health product ( Figure 4 ).

[0046] Example 3

[0047] (1) Preparation of Angelica dahurica beads: The epidermis of the Angelica dahurica root was removed and 10 beads (with a diameter of 5.0 mm) were prepared; the beads were washed with ultrapure water for 15 seconds and then dried at 50°C to obtain treated beads.

[0048] Preparation of protective layer slurry: After coupling treatment (82°C, 1000 r / min, 100 min) of silica powder (particle size 30 mm) with a silane coupling agent (5% of the mass of silica powder, KH550), a 0.2 g / L aqueous solution of graphene oxide (5% of the mass of silica powder) was added to the suspension, stirred and mixed (25°C, 800 r / min, 2 h) until uniform, and then vacuum dried (80°C, 3 h). ), obtaining graphene oxide modified silica powder; adding the graphene oxide modified silica powder, a curing agent (polyetheramine D230) and a curing accelerator (2,4,6-tris(dimethylaminomethyl)phenol) to a mixture of epoxy resin and nitrile rubber (the mass ratio of epoxy resin, curing agent, nitrile rubber, graphene oxide modified silica and curing accelerator is 100:30:18:7:0.8), and stirring evenly to obtain a protective layer slurry;

[0049] (2) The beads obtained in step (1) were coated with the protective layer slurry prepared in step (1) (the protective layer thickness was 1.0 mm) and cured (70° C., 3 h) to obtain the Angelica dahurica beads health product.

[0050] Example 4

[0051] (1) Preparation of Angelica dahurica beads: 10 beads (5.0 mm in diameter) were prepared by removing the epidermis from the root of Angelica dahurica. The beads were washed with ultrapure water for 15 seconds and then dried at 50°C to obtain treated beads ( Figure 2 a);

[0052] Preparation of protective layer slurry: Silica powder (particle size 30 mm) was coupled with a silane coupling agent (5% by mass of the silica powder, KH550) (82°C, 1000 rpm, 100 min). A 0.2 g / L aqueous solution of graphene oxide (5% by mass of the silica powder) was then added to the suspension. The mixture was stirred (25°C, 800 rpm, 2 h) until uniformly mixed. The mixture was then vacuum dried (80°C, 3 h) to obtain graphene oxide-modified silica powder. The graphene oxide-modified silica powder and a curing agent (polyetheramine D230) were added to a mixture of epoxy resin and nitrile rubber (the mass ratio of epoxy resin, curing agent, nitrile rubber, and graphene oxide-modified silica was 100:30:18:7). The mixture was stirred until uniformly mixed to obtain a protective layer slurry.

[0053] (2) The beads obtained in step (1) were coated with the protective layer slurry prepared in step (1) (the protective layer thickness was 1.0 mm) and cured (70° C., 3 h) to obtain the Angelica dahurica beads health product.

[0054] Example 5

[0055] (1) Preparation of Angelica dahurica beads: 10 beads (5.0 mm in diameter) were prepared by removing the epidermis from the root of Angelica dahurica. The beads were washed with ultrapure water for 10 seconds, then placed in a 70% by volume ethanol solution for ultrasonic treatment (25°C, 20 kHz, 250 W, 30 min), and finally dried at 50°C to obtain surface-treated beads.

[0056] Preparation of protective layer slurry: After coupling treatment (85°C, 1000 r / min, 90 min) of silica powder (particle size of 20 mm) with a silane coupling agent (3% of the mass of silica powder, KH550), a 0.1 g / L aqueous solution of graphene oxide (2-7% of the mass of silica powder) was added to the suspension, stirred and mixed (20°C, 800 r / min, 3 h) until uniform, and then vacuum dried (80°C, 3 h), obtaining graphene oxide modified silica powder; adding the graphene oxide modified silica powder, a curing agent (polyetheramine D230) and a curing accelerator (2,4,6-tris(dimethylaminomethyl)phenol) to a mixture of epoxy resin and nitrile rubber (the mass ratio of epoxy resin, curing agent, nitrile rubber, graphene oxide modified silica and curing accelerator is 80:25:30:5:0.5), and stirring evenly to obtain a protective layer slurry;

[0057] (2) The beads obtained in step (1) are coated with the protective layer slurry prepared in step (1) (the protective layer thickness is 0.5 mm) and cured (70° C., 3 h) to obtain the Angelica dahurica health product.

[0058] Example 6

[0059] (1) Preparation of Angelica dahurica beads: The epidermis of the root of Angelica dahurica was removed and 10 beads (diameter 5.0 mm) were prepared. The beads were washed with ultrapure water for 20 seconds, then placed in an 80% by volume ethanol solution and ultrasonically treated (20°C, 40kHz, 300W, 10min), and finally dried at 50°C to obtain surface-treated beads.

[0060] Preparation of protective layer slurry: After coupling treatment (80°C, 1000 r / min, 150 min) of silica powder (particle size of 40 mm) with a silane coupling agent (6% of the mass of silica powder, KH550), a 0.3 g / L aqueous solution of graphene oxide (2% of the mass of silica powder) was added to the suspension, stirred and mixed (25°C, 800 r / min, 1 h) until uniform, and then vacuum dried (80°C, 3 h), obtaining graphene oxide modified silica powder; adding the graphene oxide modified silica powder, a curing agent (polyetheramine D230) and a curing accelerator (2,4,6-tris(dimethylaminomethyl)phenol) to a mixture of epoxy resin and nitrile rubber (the mass ratio of epoxy resin, curing agent, nitrile rubber, graphene oxide modified silica and curing accelerator is 120:35:5:5:1.5), and stirring evenly to obtain a protective layer slurry;

[0061] (2) The beads obtained in step (1) were coated with the protective layer slurry prepared in step (1) (the protective layer thickness was 2.0 mm) and cured (70° C., 3 h) to obtain the Baizhi beads health product.

[0062] Example 7

[0063] (1) Preparation of Angelica dahurica beads: The epidermis of the root of Angelica dahurica was removed and 10 beads (diameter 5.0 mm) were prepared. The beads were washed with ultrapure water for 15 seconds, then placed in a 75% by volume ethanol solution and ultrasonically treated (20°C, 35kHz, 200W, 40min), and finally dried at 50°C to obtain surface-treated beads.

[0064] Preparation of protective layer slurry: Silica powder (particle size of 30 mm) was coupled with a silane coupling agent (5% of the mass of silica powder, KH550) at 85 ° C, 1000 r / min, 120 min, and then a 0.2 g / L aqueous solution of graphene oxide (4% of the mass of silica powder) was added to the suspension. After stirring and mixing (25 ° C, 800 r / min, 3 h) until uniform, the suspension was vacuum dried (80 ° C, 3 h). ), obtaining graphene oxide modified silica powder; adding the graphene oxide modified silica powder, a curing agent (polyetheramine D230) and a curing accelerator (2,4,6-tris(dimethylaminomethyl)phenol) to a mixture of epoxy resin and nitrile rubber (the mass ratio of epoxy resin, curing agent, nitrile rubber, graphene oxide modified silica and curing accelerator is 120:35:30:5:0.8), and stirring evenly to obtain a protective layer slurry;

[0065] (2) The beads obtained in step (1) were coated with the protective layer slurry prepared in step (1) (the protective layer thickness was 1.5 mm) and cured (70° C., 3 h) to obtain the Baizhi beads health product.

[0066] Comparative Example 1

[0067] The Angelica dahurica health product was prepared by the method in Example 1, except that the added silicon dioxide powder was not modified by graphene oxide.

[0068] Comparative Example 2

[0069] The method in Example 1 was used to prepare the Baizhizhu health product ( Figure 4 ), which is different from Example 1, is that the mass ratio of the added epoxy resin, curing agent, nitrile rubber and graphene oxide modified silica is 100:30:40:7.

[0070] Comparative Example 3

[0071] The Angelica dahurica health product was prepared by the method in Example 1, except that the mass ratio of the added epoxy resin, curing agent, nitrile rubber and graphene oxide modified silica was 100:30:2:7.

[0072] Comparative Example 4

[0073] The Angelica dahurica health product was prepared by the method in Example 1, except that the mass ratio of the added epoxy resin, curing agent, nitrile rubber and graphene oxide modified silica was 100:30:18:12.

[0074] Comparative Example 5

[0075] The Angelica dahurica health product was prepared by the method in Example 1, except that the mass ratio of the added epoxy resin, curing agent, nitrile rubber and graphene oxide modified silica was 60:30:18:7.

[0076] Experimental example:

[0077] The Baizhizhu health products prepared in Examples 1-7 and Comparative Examples 1-5 were tested for hardness (GB / T6739-1996 "Determination of Coating Hardness by Pencil Method") and the number and diameter of surface pores (SEM observation, randomly obtaining fields of view and counting, then statistically analyzing and calculating the average) and the results are as follows:

[0078] Serial number hardness <![CDATA[Number of holes (holes / cm 2 ).]]> Percentage of pore size > 0.83um (%) Example 1 3H <![CDATA[5.1*10 5 ]]> 59 Example 2 3H <![CDATA[4.2*10 5 ]]> 62 Example 3 3H <![CDATA[3.8*10 5 ]]> 48 Example 4 3H <![CDATA[2.4*10 5 ]]> 43 Example 5 3H <![CDATA[5.4*10 5 ]]> 52 Example 6 3H <![CDATA[2.3*10 5 ]]> 51 Example 7 3H <![CDATA[4.8*10 5 ]]> 58 Comparative Example 1 3H <![CDATA[4.3*10 5 ]]> 52 Comparative Example 2 2H <![CDATA[6.2*10 5 ]]> 67 Comparative Example 3 4H <![CDATA[0.8*10 5 ]]> 26 Comparative Example 4 4H <![CDATA[4.3*10 5 ]]> 48 Comparative Example 5 2H <![CDATA[5.7*10 5 ]]> 68

[0079] According to the above test data, it can be seen that in Example 1 of the present invention, the prepared Baizhizhu health-care product has the advantages of high hardness, many pores, and large pore diameter, which is beneficial to the protection of Baizhizhu and the volatilization of Baizhi volatile oil; in Example 2, during the preparation process, no curing accelerator was added, and the curing speed of the Baizhizhu protective layer was slow, which was not conducive to the formation of pores. Although the prepared Baizhizhu health-care product had high hardness, the number of pores was relatively reduced and the pore diameter was increased; in Example 3, during the preparation process, no ultrasonic treatment was used for the Baizhizhu, and there were fewer pits on the surface of the Baizhizhu, which was not conducive to the coating of the protective layer and the formation of pores. Although the prepared Baizhizhu health-care product had high hardness, the number of pores was relatively reduced and the pore diameter was relatively smaller; in Example 4, during the preparation process, neither a curing accelerator was added nor ultrasonic treatment was used for the Baizhizhu, so the prepared Baizhizhu health-care product had high hardness, but the number of pores was the least and the pore diameter was smaller; in Examples 5-7, the composition and thickness of the protective layer were adjusted within the scope of the present invention, and the prepared Baizhizhu health-care products The product also has the advantages of high hardness, many holes and large hole diameter; in the preparation process of Comparative Example 1, the silicon dioxide used has not been modified with graphene oxide, which results in a significant decrease in the toughness of the Baizhizhu health-care product obtained, a large brittle protective layer, and easy cracks after wearing; in the preparation process of Comparative Example 2, the amount of nitrile rubber added is greater than the scope of the present invention, resulting in a decrease in the hardness of the Baizhizhu health-care product obtained, an increase in the number of holes, and an increase in the hole diameter; in the preparation process of Comparative Example 3, the amount of nitrile rubber added is less than the scope of the present invention, resulting in a decrease in the toughness of the Baizhizhu health-care product, high hardness, a significant decrease in the number of holes, a decrease in the hole diameter, and the appearance of cracks; in the preparation process of Comparative Example 4, the amount of graphene oxide-modified silicon dioxide added is greater than the scope of the present invention, resulting in an increase in the hardness of the Baizhizhu health-care product obtained, a decrease in the number of holes and a decrease in the hole diameter; in the preparation process of Comparative Example 5, the amount of epoxy resin added is less than the scope of the present invention, resulting in a decrease in the hardness of the Baizhizhu health-care product obtained, poor bonding effect, a rough surface, and an increase in the number of holes and hole diameter.

Claims

1. A Baizhizhu health care product, characterized by: The angelica bead health product comprises angelica beads polished from angelica roots and a protective layer coated on the surface of the angelica beads; the protective layer is a porous polymer composite material composed of graphene oxide-modified silica, epoxy resin, curing agent and nitrile rubber; the protective layer has a thickness of 0.5-2.0 mm; and in the porous polymer composite material, the mass ratio of epoxy resin, curing agent, nitrile rubber and graphene oxide-modified silica is 80-120:25-35:5-30:5-10.

2. The Baizhizhu health product according to claim 1, characterized in that: The thickness of the protective layer is 1-1.5 mm.

3. The Baizhizhu health product according to claim 1, characterized in that: In the porous polymer composite material, the mass ratio of epoxy resin, curing agent, nitrile rubber and graphene oxide modified silicon dioxide is 100:30:18:

7.

4. The Baizhizhu health product according to claim 1, characterized in that: The porous polymer composite material also includes a curing accelerator.

5. The Baizhizhu health product according to claim 4, characterized in that: The amount of the curing accelerator is 0-1% of the mass of the porous polymer composite material.

6. A method for preparing the Baizhizhu health product according to any one of claims 1 to 5, characterized in that: The method comprises the following steps: (1) preparing angelica root beads: removing the epidermis of angelica root, preparing the beads and washing the beads; Preparation of protective layer slurry: After coupling treatment of silica powder with a silane coupling agent, water is added to prepare a suspension; graphene oxide aqueous solution is added to the suspension, stirred and reacted at room temperature for 1-3 hours, and then dried to obtain graphene oxide-modified silica powder; the graphene oxide-modified silica powder and a curing agent are added to a mixture of epoxy resin and nitrile rubber, and stirred evenly to obtain a protective layer slurry; (2) The beads obtained in step (1) are coated with the protective layer slurry prepared in step (1) and solidified to obtain the Angelica dahurica beads health product.

7. The preparation method according to claim 6, characterized in that: Step (1) also includes surface treatment of the beads; the surface treatment method includes: placing the cleaned beads in an ethanol solution and performing ultrasonic treatment.

8. The preparation method according to claim 6, characterized in that: The dosage of silane coupling agent is 3-6% of the mass of silica powder.

9. The preparation method according to claim 6, characterized in that: In step (1), the amount of graphene oxide used is 1-7% of the mass of the silicon dioxide powder.

10. The preparation method according to claim 6, characterized in that: In step (2), the curing treatment temperature is 60-80°C and the time is 2-5 hours.

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