阅读说明：本技术 一种防紫外线组合物及其应用 (Ultraviolet-proof composition and application thereof ) 是由 陶文娟 于 2021-09-09 设计创作，主要内容包括：本发明公开了一种防紫外线组合物及其应用。一种防紫外线组合物,制备原料包括工业防晒剂和草本防晒剂；所述工业防晒剂包括氧化石墨烯和改性二氧化钛；所述草本防晒剂的制备原料包括艾草。本发明的防紫外线组合物,通过制备原料之间的搭配,能够提升包含该防紫外线组合物的面料的紫外线防护能力、使用寿命和肤感舒适度。(The invention discloses an anti-ultraviolet composition and application thereof. An ultraviolet-proof composition is prepared from industrial sunscreen agent and herbal sunscreen agent; the industrial sun-screening agent comprises graphene oxide and modified titanium dioxide; the preparation raw material of the herbal sunscreen comprises wormwood. According to the ultraviolet-proof composition disclosed by the invention, through the matching of the preparation raw materials, the ultraviolet protection capability, the service life and the skin comfort level of the fabric containing the ultraviolet-proof composition can be improved.)

1. An ultraviolet-proof composition is characterized in that raw materials for preparation comprise an industrial sunscreen agent and a herbal sunscreen agent;

the industrial sun-screening agent comprises graphene oxide and modified titanium dioxide;

the preparation raw material of the herbal sunscreen comprises wormwood.

2. The UV-protective composition according to claim 1, wherein the modifying agent for the modified titanium dioxide is a silane coupling agent; preferably, the preparation method of the modified titanium dioxide comprises dispersing the nano titanium dioxide in an organic solution containing a silane coupling agent, performing solid-liquid separation, and washing the obtained solid.

3. The ultraviolet-proof composition according to claim 1, wherein the mass ratio of the graphene oxide to the modified titanium dioxide is 1: (0.5-2).

4. The UV-screening composition of claim 1, wherein said herbal sunscreen is prepared by decocting mugwort in water and collecting the decoction; preferably, in the decoction, the mass volume ratio of the wormwood to the water is 1g: 10-20 ml; preferably, the decoction time is 10-60 min.

5. An ultraviolet-proof fabric, which is characterized in that the fabric is obtained by treating fibers with the ultraviolet-proof composition as defined in any one of claims 1 to 4.

6. The ultraviolet-proof fabric of claim 5, wherein the fibers comprise at least one of natural fibers and artificial fibers; preferably, the natural fibers comprise at least one of cotton, hemp, wool, and silk; preferably, in the raw materials for preparing the ultraviolet-proof fabric, the industrial sunscreen agent accounts for 5-13% of the fibers by mass.

7. The preparation method of the ultraviolet-proof fabric as claimed in claim 5 or 6, characterized by comprising the following steps:

s1, soaking fibers in a water-based dispersion liquid containing the industrial sun-screening agent, and then cleaning and drying the fibers;

s2, spinning the fibers obtained in the step S1 into fabrics;

and S3, processing the fabric obtained in the step S2 by using the herbal sun-screening agent, and then cleaning to obtain the fabric.

8. The method according to claim 7, wherein in step S1, the ratio of solid matter in the aqueous dispersion is 0.4 to 0.7 wt%; preferably, the mass ratio of the fibers to the aqueous dispersion is 1:15 to 25; preferably, in the step S1, the soaking time is 1-3 hours; preferably, in step S1, the cleaning method is water cleaning.

9. The preparation method according to claim 7, wherein in the step S3, the mass-volume ratio of the fabric to the herbal sunscreen agent is 1g: 15-25 ml; preferably, the processing method comprises the steps of soaking the fabric in the herbal sun-screening agent and then drying; preferably, in the treatment, the soaking time is 10-50 min.

10. A sun-blocking garment characterized in that a raw material for preparation comprises the ultraviolet-blocking fabric according to claim 5 or 6.

Technical Field

The invention belongs to the technical field of clothing materials, and particularly relates to an ultraviolet-proof composition and application thereof.

Background

With the improvement of living standard, the living idea of people is changed, and the attention of leisure and recreation and outdoor activities is paid more. Preventing ultraviolet rays from damaging human bodies during outdoor activities is being paid more and more attention by consumers. In order to prevent the damage of outdoor ultraviolet rays to human bodies, people explore various sun protection methods, such as methods of directly applying sun protection cream on the skin surface, shielding sun umbrellas, wearing sun protection clothes, and the like. Wherein the sunscreen cream not only can increase the burden of the skin, but also has a sunscreen period of less than or equal to 4 h; therefore, the application is troublesome for consumers; the sun umbrella has better shielding effect than the sun-proof cream, but is inconvenient to carry due to the need of additional carrying, and the sun-proof clothes are more and more favored by consumers.

Sun-blocking clothes appear in the united states at the earliest in 2007, and then gradually become popular in the inland market, and take a place in the clothing market with a very strong advantage, and the development prospect of clothes turning over is huge in the future. Data survey shows that the sun-proof internet shops are sold, the highest monthly sales amount can reach 2.4 ten thousand, and the more few of the sun-proof internet shops sell 2 ten thousand. Therefore, the demand of people for sun-blocking clothes is huge.

However, the sun-blocking clothes in the existing market have many limitations in the aspects of ultraviolet protection capability, service life and the like, and simultaneously, the components in part of the sun-blocking clothes can also cause damage to human bodies.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art described above. Therefore, the ultraviolet-proof composition provided by the invention can improve the ultraviolet protection capability, the service life and the skin comfort level of the ultraviolet-proof fabric containing the ultraviolet-proof composition by matching the preparation raw materials.

The invention also provides application of the ultraviolet-proof composition.

According to one aspect of the invention, an ultraviolet screening composition is provided, prepared from raw materials including industrial sunscreen and herbal sunscreen;

the industrial sun-screening agent comprises graphene oxide and modified titanium dioxide;

the preparation raw material of the herbal sunscreen comprises wormwood.

According to a preferred embodiment of the present invention, at least the following advantages are provided:

(1) the graphene oxide is of a layered structure and contains a large number of C-C bonds and C ═ C bonds, when the graphene oxide is irradiated by ultraviolet rays, the wavelength corresponding to the transition absorption peak of the C-C bonds is 231nm, and the wavelength corresponding to the transition absorption peak of the C ═ C bonds is 300 nm; namely, the graphene oxide has excellent absorption in a deep ultraviolet region with the wavelength less than or equal to 300nm, and the sun-proof clothes/ultraviolet-proof fabric prepared from the graphene oxide can prevent short-wave ultraviolet rays from burning the skin;

the graphene oxide also has the functions of bacteriostasis, electric conduction, flame retardance and the like, so that the sun-proof clothes prepared from the graphene oxide also has the capabilities of static electricity prevention, bacteriostasis and flame retardance;

the graphene oxide contains abundant hydroxyl and carboxyl, can be combined with fabric fibers in various forms, improves the combining fastness between the graphene oxide and the fabric fibers, and prolongs the service life of the sun-proof clothes/ultraviolet-proof fabric.

(2) Titanium dioxide is commonly used for preparing sunscreen skin care products and cosmetics and has the functions of absorbing, reflecting and scattering ultraviolet rays; however, titanium dioxide is an inert inorganic substance, so that the technology of applying the titanium dioxide to textile fibers is fresh;

according to the invention, the graphene oxide and the titanium dioxide are combined, so that the ultraviolet absorption capacity of the ultraviolet-proof fabric prepared from the graphene oxide and the titanium dioxide can be effectively improved.

(3) The wormwood extract is rich in flavonoid compounds, and has antioxidant and ultraviolet-proof capabilities;

meanwhile, the wormwood extract can also improve the adhesion fastness of the industrial sunscreen agent on the fabric and prolong the service life of the ultraviolet-proof fabric containing the ultraviolet-proof composition;

furthermore, the wormwood extract has the effects of bacteriostasis and insect prevention.

(4) The industrial sunscreen agent adopted by the invention is an inorganic inert raw material, and the herbal sunscreen agent is a plant extract, so that the physical health of consumers is not influenced;

in addition, the anti-ultraviolet fabric containing the anti-ultraviolet composition has the functions of static resistance and bacteriostasis, and can effectively improve the skin comfort of consumers.

In some embodiments of the invention, the modifying agent of the modified titanium dioxide is a silane coupling agent.

In some embodiments of the present invention, the method for preparing the modified titania includes dispersing nano titania in an organic solution including a silane coupling agent, performing solid-liquid separation, and washing the resulting solid.

In some embodiments of the invention, the silane coupling agent comprises at least one of KH-550 and KH-570.

In some embodiments of the invention, the solvent of the organic solution is at least one of ethanol, propanol, and isopropanol.

In some embodiments of the present invention, the concentration of the silane coupling agent in the organic solution is 1 to 3 wt%.

In some embodiments of the present invention, the titanium dioxide is dispersed by at least one of stirring and ultrasound for 10 to 20 min.

The titanium dioxide is inert inorganic powder and has low bonding compactness with fabric fibers, so that although the titanium dioxide has excellent ultraviolet resistance, the titanium dioxide is less applied to the garment fabric;

according to the invention, the silane coupling agent is used for modifying titanium dioxide, so that the surface of the titanium dioxide contains abundant organic groups, and the bonding strength between the titanium dioxide and the fabric fiber is improved.

In some embodiments of the present invention, the mass ratio of the graphene oxide to the modified titanium dioxide is 1: (0.5-2).

In some embodiments of the present invention, the herbal sunscreen is prepared by decocting folium Artemisiae Argyi with water and collecting the decoction.

In some embodiments of the invention, the weight volume ratio of the wormwood to the water in the decoction is 1g: 10-20 ml.

In some embodiments of the invention, the decocting time is 10-60 min.

According to another aspect of the invention, an ultraviolet-proof fabric is provided, which is obtained by treating fibers with the ultraviolet-proof composition.

In some embodiments of the invention, the fibers comprise at least one of natural fibers and artificial fibers.

In some embodiments of the invention, the natural fibers comprise at least one of cotton, hemp, wool, and silk.

In some embodiments of the invention, in the raw materials for preparing the ultraviolet-proof fabric, the industrial sunscreen agent accounts for 5-13% of the fibers by mass.

According to another aspect of the invention, a preparation method of the ultraviolet-proof fabric is provided, and the preparation method comprises the following steps:

s1, soaking fibers in a water-based dispersion liquid containing the industrial sun-screening agent, and then cleaning and drying the fibers;

s2, spinning the fibers obtained in the step S1 into fabrics;

and S3, processing the fabric obtained in the step S2 by using the herbal sun-screening agent, and then cleaning to obtain the fabric.

The preparation method according to a preferred embodiment of the present invention has at least the following advantageous effects:

(1) compared with the fabric treated by the industrial sunscreen agent, the fabric treated by the method disclosed by the invention has the advantages that the fiber raw material is directly treated, so that the industrial sunscreen agent can be fully and uniformly dispersed into the fiber, the uniformity of the texture of the obtained ultraviolet-proof fabric is improved, and the bonding fastness of the ultraviolet-proof fabric and the industrial sunscreen agent is improved.

(2) In the preparation method provided by the invention, the fabric fiber is modified, and a sun-proof coating is not required to be formed on the surface of the fabric, so that the air permeability and the comfort of the obtained ultraviolet-proof fabric are improved.

(3) The preparation method provided by the invention has simple conditions and is convenient for industrial popularization.

In some embodiments of the invention, the fibers are boiled and dried before use in step S1.

In some preferred embodiments of the present invention, in the water boiling treatment of the fiber, 0.1 to 1 wt% of polyvinyl alcohol is added to water.

Polyvinyl alcohol can further improve the bonding strength between the industrial sunscreen agent and the fiber.

In some embodiments of the present invention, in step S1, the ratio of solid matter in the aqueous dispersion is 0.4 to 0.7 wt%.

In some embodiments of the present invention, in step S1, the mass ratio of the fibers to the aqueous dispersion is 1:15 to 25.

In some embodiments of the present invention, in step S1, the soaking time is 1-3 hours.

In some embodiments of the present invention, in step S1, the soaking is performed with the assistance of ultrasound to improve the distribution uniformity of the industrial sunscreen agent.

In some embodiments of the invention, step S1 further comprises drying the soaked fibers before the washing.

The drying can further promote the reaction between the industrial sunscreen agent and the fiber, and improve the bonding strength between the industrial sunscreen agent and the fiber.

In some embodiments of the present invention, in step S1, the cleaning method is water cleaning.

In some embodiments of the invention, in step S3, the mass-to-volume ratio of the fabric to the herbal sunscreen agent in the treatment is 1g: 15-25 ml.

In some embodiments of the invention, the treatment is carried out by soaking the fabric in the herbal sunscreen followed by drying.

In some embodiments of the invention, the soaking time is 10-50 min in the treatment.

If not specifically stated, the drying temperature is 20-60 ℃; preferably, the method is at least one of air drying or air drying.

According to another aspect of the invention, the sun-proof clothes are provided, and the preparation raw materials comprise the ultraviolet-proof fabric.

Detailed Description

The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.

Example 1

The embodiment prepares the ultraviolet-proof fabric, and the specific process is as follows:

s1, preparing modified titanium dioxide: dispersing nano titanium dioxide with the average particle size of about 20nm in an ethanol solution containing 2wt KH-550, performing ultrasonic treatment for 20min, centrifuging, and washing the obtained solid with water for 2 times to obtain the final product;

s2, preparing a herbal sunscreen agent: mixing wormwood and water according to the weight ratio of 1g: mixing 15ml of the raw materials according to a mass-volume ratio, heating and boiling for 30min, filtering to obtain a decoction, and naturally cooling to room temperature to obtain the traditional Chinese medicine composition;

s3, fiber pretreatment: boiling cotton fiber with diameter of 20D in water for 20min, and oven drying at 50 deg.C; wherein the water contains 0.5 wt% of polyvinyl alcohol;

s4, preparing a dispersion liquid of an industrial sunscreen agent: weighing 1 part by weight of graphene oxide and 2 parts by weight of the modified titanium dioxide obtained in the step S1, and ultrasonically dispersing the graphene oxide and the modified titanium dioxide in water, wherein the mass percentage of solids in the dispersion liquid is 0.6 wt%;

s5, soaking the fibers obtained in the step S3 into the dispersion liquid obtained in the step S4, wherein the mass ratio of the fibers to the dispersion liquid is 1:20, the soaking time is 2 hours under the assistance of ultrasonic waves, the fibers obtained after soaking are air-dried at 50 ℃, and then the fibers obtained are continuously air-dried at 50 ℃ after being washed for 2 times by water;

s6, spinning the fibers obtained in the step S5 into fabrics;

s7, soaking the fabric obtained in the step S6 in the herbal sun-screening agent obtained in the step S2 for 40min, wherein the temperature in the soaking process is 50 ℃; after finishing, drying the obtained fabric at 50 ℃; and sequentially carrying out water washing for 1 time, soaping for one time and air drying at 50 ℃ after water washing for one time.

In this embodiment, steps S1 to S3 are not in sequence.

Example 2

The embodiment prepares the ultraviolet-proof fabric, and the specific process is different from that of embodiment 1:

in the water of step S3, polyvinyl alcohol is not contained.

Comparative example 1

The comparative example prepares an ultraviolet-proof fabric, and the difference from the example 1 is that:

step S4 directly uses unmodified titanium dioxide, excluding step S1.

Comparative example 2

The comparative example prepares an ultraviolet-proof fabric, and the difference from the example 1 is that:

step S2 is not included;

step S7 does not include the step of soaking the fabric obtained in step S6 in a herbal sunscreen agent, and the subsequent steps such as washing with water and soaping are directly performed.

Comparative example 3

The comparative example prepares an ultraviolet-proof fabric, and the difference from the example 1 is that:

step S5 is not performed;

between step S6 and step S7, step a is added: and (3) soaking the fabric obtained in the step (S6) into the dispersion liquid obtained in the step (S4), wherein the mass ratio of the fabric to the dispersion liquid is 1:20, the soaking time is 2 hours under the assistance of ultrasonic waves, the fabric obtained after soaking is air-dried at 50 ℃, then the fabric obtained is cleaned with water for 2 times and then air-dried at 50 ℃.

Test examples

The performance of the ultraviolet-proof fabrics prepared in the examples and the comparative examples is tested in the test example. Wherein:

the ultraviolet resistance performance test method comprises the following steps: according to GB/T18830-2009 evaluation on ultraviolet resistance of textiles, the ultraviolet resistance of the fabric is tested by using a YG (B)912E type ultraviolet resistance tester for the textiles. The instrument performs parallel radiation on a sample to be measured by using monochromatic UV radiation, and an integrating sphere in the instrument can calculate the ultraviolet transmittance of the fabric and the UPF value of the fabric after collecting total radiation rays; 5 square samples with the size of at least 7cm multiplied by 7cm (selvage, defects and creases are avoided) are cut on the ultraviolet-proof fabrics prepared in the examples and the comparative examples, and the sample to be tested can completely cover the holes of the instrument; starting a Rong912E ultraviolet-proof testing system, setting the temperature to be 20 ℃ and the humidity to be 65%; turning on an argon lamp, starting a system to start an empty sample test without placing a sample in the tester; after the empty sample test is finished, ensuring that the front side of the fabric faces a radiation light source and is placed into an instrument, starting the test again, and automatically recording the UVA and UVB transmittance and the UPF value of the ultraviolet protection coefficient of the fabric by a system; and finally, storing and exporting the test results, and calculating the test average value of 5 parts of each sample, wherein the test results are shown in table 1.

Table 1 ultraviolet screening ability of ultraviolet screening fabrics obtained in examples and comparative examples

	UPA transmittance%	UVB transmittance%	UPF
				Example 1	2.2	1.9	43
Example 2	2.4	2.2	42.7
				Comparative example 1	9.6	6.4	12.4
Comparative example 2	22.4	15.7	5.5
				Comparative example 3	10.6	5.7	11.5

The results in table 1 show that the ultraviolet-proof fabric prepared from the preparation raw materials and the preparation method provided by the invention can effectively prevent ultraviolet rays, and meets the requirements of serving as a sun-proof clothes fabric;

however, if the titanium dioxide in the industrial sunscreen agent is not modified (comparative example 1), it cannot be effectively bonded to the fibers of the fabric, so that the resulting uv-blocking fabric is equivalent to not including titanium dioxide, and therefore the sunscreen properties are significantly reduced;

if the fabric obtained in the step S6 is not treated with herbal sunscreen agents (comparative example 2), the graphene oxide and the modified silicon dioxide gradually fall off from the cotton fibers during the washing and soaping in the step S7, so that the ultraviolet protection capability of the obtained fabric is remarkably reduced;

if a textile fabric is treated with an industrial sunscreen agent (comparative example 3) instead of the cotton fibers from which the fabric is made, this may result in a reduction in the adhesion and dispersion uniformity of the industrial sunscreen agent in the fabric, which in turn reduces the uv protection of the resulting fabric.

The method for testing the washing fastness comprises the following steps: according to GB/T8629-2001 household washing and drying program for textile test, after washing the fabrics by using a full-automatic A-type washing machine and drying the fabrics by using an oven, respectively testing the UPF value of each fabric after washing for different times, and comprehensively evaluating the durability of the fabrics according to the change condition of the UPF value along with the washing times. The test results are shown in table 2.

TABLE 2 washable performance results (calculated as UPF value) for UV protection fabrics obtained in examples and comparative examples

	Not washed	Washing for 5 times	Washing 30 times	Washing for 100 times
					Example 1	43	42.1	39.3	36.7
Example 2	42.7	41.9	38.1	35.0
					Comparative example 1	12.4	10.9	9.7	6.1
Comparative example 2	5.5	3.9	3.5	3.5
					Comparative example 3	11.5	10.3	9.2	6.0

According to the results in table 2, the ultraviolet-proof fabric prepared by the preparation raw materials and the method provided by the invention can effectively ensure the water washing resistance of the fabric, has high ultraviolet protection capability after being washed by a washing machine for 100 times, and can predict that the ultraviolet capability of the fabric can be further improved after being washed by hands for the same times.

However, if the titanium dioxide used is not modified (comparative example 1), no herbal sunscreen is used (comparative example 2) or the preparation steps are adjusted, the wash resistance of the resulting fabric is significantly reduced until the uv protection of the fabric is comparable to that of the untreated fabric (about 3.5).

The embodiments of the present invention have been described in detail, but the present invention is not limited to the embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.