CN115992457A - DWR waterproof and antifouling fabric coating and preparation method thereof - Google Patents
DWR waterproof and antifouling fabric coating and preparation method thereof Download PDFInfo
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- CN115992457A CN115992457A CN202310148013.2A CN202310148013A CN115992457A CN 115992457 A CN115992457 A CN 115992457A CN 202310148013 A CN202310148013 A CN 202310148013A CN 115992457 A CN115992457 A CN 115992457A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a DWR waterproof and antifouling fabric coating and a preparation method thereof, wherein the preparation raw materials comprise the following components in parts by weight: 10-20 parts of acrylic acid, 15-25 parts of polyurethane resin, 6-12 parts of high fluorinated butyl, 10-20 parts of modified mulberry fibrilia, 3-8 parts of waterproof auxiliary agent, 3-5 parts of nano silver ion antibacterial agent, 15-25 parts of gelatinizing agent and 15-25 parts of ethanol; wherein the modified mulberry hemp fiber is obtained by degreasing and carbonizing the mulberry hemp fiber. The degreasing treatment can improve the mutual fusion performance between Gao Sangma fibers and other raw materials, is easy to penetrate into other substances in the reaction, so that the integral anti-cracking performance is provided, the carbonization treatment can improve the fluffiness of the mulberry hemp fibers, so that the mulberry hemp fibers are easy to adhere to other substances, and compared with the common mulberry hemp fibers, the fusion degree and the fluffiness are obviously improved, the permeability of a final object is smaller, and the softness of the cloth after brushing can be ensured.
Description
Technical Field
The invention relates to the technical field of fabric coatings, in particular to a DWR waterproof and antifouling fabric coating and a preparation method thereof.
Background
With the development of society and the progress of age, functional fabrics are increasingly applied to daily dressing needs of people. After the fabric is subjected to waterproof, oil-proof and antifouling finishing, water, oil (including engine oil, food oil and the like) and stains (soy sauce, soup, jam, milk, coffee and the like) are not easy to infiltrate into the fabric, so that the garment fabric is kept clean and clean for a long time, the washing times are reduced, and the garment fabric is durable and easy to treat, so that the garment fabric is widely accepted.
However, when the DWR waterproof and antifouling fabric coating is coated on the fabric of the clothes, the DWR waterproof and antifouling coating is firstly required to be melted into colloid, and then the DWR waterproof and antifouling coating in a melted state is coated on the fabric, and the coating is easy to tear due to the fact that the coating is required to be coated thinly, and the coating is not easy to permeate through the fabric due to the constraint stress between the colloid after coating, so that the fabric is integrally hardened.
Disclosure of Invention
The invention aims to provide a DWR waterproof and antifouling fabric coating and a preparation method thereof, which solve the problems that the existing DWR waterproof and antifouling fabric coating is easy to tear in a thin coating state, and the coating is easy to permeate through cloth after coating due to low constraint stress between colloids, so that the whole cloth is hardened.
The invention realizes the above purpose through the following technical scheme:
the DWR waterproof and antifouling fabric coating comprises the following preparation raw materials in parts by weight: 10-20 parts of acrylic acid, 15-25 parts of polyurethane resin, 6-12 parts of high fluorinated butyl, 10-20 parts of modified mulberry fibrilia, 3-8 parts of waterproof auxiliary agent, 3-5 parts of nano silver ion antibacterial agent, 15-25 parts of gelatinizing agent and 15-25 parts of ethanol;
wherein the modified mulberry hemp fiber is obtained by degreasing and carbonizing the mulberry hemp fiber.
The preparation method of the DWR waterproof and antifouling fabric coating comprises the following steps:
(1) Taking ethanol, acrylic acid, polyurethane resin, high fluorinated butyl, a gelatinizing agent and a waterproof auxiliary agent, placing the materials into a container, and stirring the materials at 70-80 ℃ for 30-40min to obtain a mixture A;
(2) Removing impurities from the mulberry hemp fiber, degreasing and carbonizing the mulberry hemp fiber to obtain modified mulberry hemp fiber, grinding the modified mulberry hemp fiber into powder, adding the powdery modified mulberry hemp fiber into the mixture A, and stirring at 80-90 ℃ for 25-35min to obtain a mixture B;
(3) Adding the nano silver ion antibacterial agent and the waterproof auxiliary agent into the mixture B, and stirring for 20-30min to obtain a mixture C;
(4) And (3) coating the mixture C on the outer surface of the fabric, uniformly spreading the mixture C on the fabric by adopting a compression roller, and cooling and solidifying to obtain the DWR waterproof and antifouling fabric coating.
The further improvement is that the degreasing treatment means that the mulberry hemp fibers are evenly spread out, the mulberry hemp fibers are cleaned by water, the mulberry hemp fibers are put into an enamel pot, meanwhile, water is added, then NaOH with the weight of 5% -8% of the water is added into the pot, the pot is covered and boiled for 10 minutes, then the mulberry hemp fibers are rubbed for 10 minutes while being washed by the water, and finally, the cleaned mulberry hemp fibers are placed on clean paper until the mulberry hemp fibers are dried.
The further improvement is that the carbonization treatment means that the mulberry and fibrilia is put into a carbonization kettle, and is baked for 48 to 72 hours at the high temperature of 750 to 850 ℃ and finally naturally cooled.
The waterproof auxiliary agent is further improved in that the waterproof auxiliary agent is fluorine substituted organic acid with C8-C12.
The further improvement is that the gelatinizer is sodium polyacrylate.
A further improvement is that the concentration of the ethanol solution is 80-95wt%.
The invention has the beneficial effects that: when the DWR waterproof and antifouling fabric coating is processed and produced by using raw materials, the modified mulberry fiber is added so that the elasticity and internal constraint stress of the DWR waterproof and antifouling fabric coating can be improved, and the DWR waterproof and antifouling fabric coating is not easy to pull and crack; in addition, the modified mulberry hemp fiber is subjected to degreasing treatment and carbonization treatment, wherein the degreasing treatment can improve the mutual fusion performance between Gao Sangma fiber and other raw materials, and is easy to penetrate into other substances in the reaction, so that the whole anti-cracking performance is provided, the carbonization treatment can improve the fluffiness of the mulberry hemp fiber, so that the modified mulberry hemp fiber is easy to be adhered with other substances, and compared with the common mulberry hemp fiber, the fusion degree and the fluffiness are obviously improved, the permeability of a final object is smaller, and the softness of the coated cloth can be ensured.
Detailed Description
The following examples are set forth in order to provide a further understanding of the present application and are not intended to limit the scope of the present application since it is believed that the present application is susceptible to numerous insubstantial modifications and variations by those skilled in the art in light of the foregoing disclosure.
Example 1
The DWR waterproof and antifouling fabric coating comprises the following preparation raw materials in parts by weight: 10 parts of acrylic acid, 15 parts of polyurethane resin, 6 parts of high fluorinated butyl, 10 parts of modified mulberry fibrilia, 3 parts of waterproof auxiliary agent, 3 parts of nano silver ion antibacterial agent, 15 parts of gelatinizing agent and 15 parts of ethanol; wherein the modified mulberry hemp fiber is obtained by degreasing and carbonizing the mulberry hemp fiber.
The preparation method of the DWR waterproof and antifouling fabric coating comprises the following steps:
(1) Taking ethanol, acrylic acid, polyurethane resin, high fluorinated butyl, a gelatinizing agent and a waterproof auxiliary agent according to weight ratio, and placing the ethanol, the acrylic acid, the polyurethane resin, the high fluorinated butyl, the gelatinizing agent and the waterproof auxiliary agent into a container, wherein the concentration of an ethanol solution is 80-95wt%, the gelatinizing agent adopts sodium polyacrylate, the waterproof auxiliary agent adopts C8-C12 fluorine to replace organic acid, and stirring the mixture for 30min at 70 ℃ to obtain a mixture A;
(2) Removing impurities from the mulberry hemp fiber, degreasing and carbonizing the mulberry hemp fiber to obtain modified mulberry hemp fiber, grinding the modified mulberry hemp fiber into powder, adding the powdery modified mulberry hemp fiber into the mixture A, and stirring at 80 ℃ for 25min to obtain a mixture B;
the degreasing treatment comprises uniformly spreading out the mulberry hemp fiber, cleaning the mulberry hemp fiber with water, adding water into an enamel pot while adding NaOH with the weight of 5% of the water into the pot, capping and boiling for 10 minutes, washing with water while rubbing for 10 minutes, and finally placing the washed mulberry hemp fiber on clean paper until the mulberry hemp fiber is dried, the carbonization treatment comprises placing the mulberry hemp fiber into a carbonization kettle, firing at a high temperature of 750 ℃ for 48 hours, and finally naturally cooling;
(3) Adding the nano silver ion antibacterial agent and the waterproof auxiliary agent into the mixture B according to the weight ratio, and stirring for 20min to obtain a mixture C;
(4) And (3) coating the mixture C on the outer surface of the fabric, uniformly spreading the mixture C on the fabric by adopting a compression roller, and cooling and solidifying to obtain the DWR waterproof and antifouling fabric coating.
Example 2
The DWR waterproof and antifouling fabric coating comprises the following preparation raw materials in parts by weight: 15 parts of acrylic acid, 20 parts of polyurethane resin, 9 parts of high fluorinated butyl, 15 parts of modified mulberry fibrilia, 5 parts of waterproof auxiliary agent, 4 parts of nano silver ion antibacterial agent, 20 parts of gelling agent and 20 parts of ethanol; wherein the modified mulberry hemp fiber is obtained by degreasing and carbonizing the mulberry hemp fiber.
The preparation method of the DWR waterproof and antifouling fabric coating comprises the following steps:
(1) Taking ethanol, acrylic acid, polyurethane resin, high fluorinated butyl, a gelatinizing agent and a waterproof auxiliary agent according to weight ratio, and placing the ethanol, the acrylic acid, the polyurethane resin, the high fluorinated butyl, the gelatinizing agent and the waterproof auxiliary agent into a container, wherein the concentration of an ethanol solution is 80-95wt%, the gelatinizing agent adopts sodium polyacrylate, the waterproof auxiliary agent adopts C8-C12 fluorine to replace organic acid, and stirring the mixture at 75 ℃ for 35min to obtain a mixture A;
(2) Removing impurities from the mulberry hemp fiber, degreasing and carbonizing the mulberry hemp fiber to obtain modified mulberry hemp fiber, grinding the modified mulberry hemp fiber into powder, adding the powdery modified mulberry hemp fiber into the mixture A, and stirring at 85 ℃ for 30min to obtain a mixture B;
the degreasing treatment comprises uniformly spreading out the mulberry hemp fiber, cleaning the mulberry hemp fiber with water, adding water into an enamel pot while adding NaOH with the weight of 6.5% of the water into the pot, capping and boiling for 10 minutes, washing with water while rubbing for 10 minutes, and finally placing the washed mulberry hemp fiber on clean paper until the mulberry hemp fiber is dried, the carbonization treatment comprises placing the mulberry hemp fiber into a carbonization kettle, firing at a high temperature of 800 ℃ for 60 hours, and naturally cooling;
(3) Adding the nano silver ion antibacterial agent and the waterproof auxiliary agent into the mixture B according to the weight ratio, and stirring for 25min to obtain a mixture C;
(4) And (3) coating the mixture C on the outer surface of the fabric, uniformly spreading the mixture C on the fabric by adopting a compression roller, and cooling and solidifying to obtain the DWR waterproof and antifouling fabric coating.
Example 3
The DWR waterproof and antifouling fabric coating comprises the following preparation raw materials in parts by weight: 20 parts of acrylic acid, 25 parts of polyurethane resin, 12 parts of high fluorinated butyl, 20 parts of modified mulberry fibrilia, 8 parts of waterproof auxiliary agent, 5 parts of nano silver ion antibacterial agent, 25 parts of gelling agent and 25 parts of ethanol; wherein the modified mulberry hemp fiber is obtained by degreasing and carbonizing the mulberry hemp fiber.
The preparation method of the DWR waterproof and antifouling fabric coating comprises the following steps:
(1) Taking ethanol, acrylic acid, polyurethane resin, high fluorinated butyl, a gelatinizing agent and a waterproof auxiliary agent according to weight ratio, and placing the ethanol, the acrylic acid, the polyurethane resin, the high fluorinated butyl, the gelatinizing agent and the waterproof auxiliary agent into a container, wherein the concentration of an ethanol solution is 80-95wt%, the gelatinizing agent adopts sodium polyacrylate, the waterproof auxiliary agent adopts C8-C12 fluorine to replace organic acid, and stirring the mixture at 80 ℃ for 40min to obtain a mixture A;
(2) Removing impurities from the mulberry hemp fiber, degreasing and carbonizing the mulberry hemp fiber to obtain modified mulberry hemp fiber, grinding the modified mulberry hemp fiber into powder, adding the powdery modified mulberry hemp fiber into the mixture A, and stirring at 90 ℃ for 35min to obtain a mixture B;
the degreasing treatment comprises uniformly spreading out the mulberry hemp fiber, cleaning the mulberry hemp fiber with water, adding water into an enamel pot while adding NaOH with the weight of 8% of the water into the pot, capping and boiling for 10 minutes, washing with water while rubbing for 10 minutes, and finally placing the washed mulberry hemp fiber on clean paper until the mulberry hemp fiber is dried, the carbonization treatment comprises placing the mulberry hemp fiber into a carbonization kettle, firing at 850 ℃ for 72 hours, and naturally cooling;
(3) Adding a nano silver ion antibacterial agent and a waterproof auxiliary agent into the mixture B according to the weight ratio, and stirring for 30min to obtain a mixture C;
(4) And (3) coating the mixture C on the outer surface of the fabric, uniformly spreading the mixture C on the fabric by adopting a compression roller, and cooling and solidifying to obtain the DWR waterproof and antifouling fabric coating.
Comparative example 1
The fabric coating of the comparative example comprises the following preparation raw materials in parts by weight: 15 parts of acrylic acid, 20 parts of polyurethane resin, 9 parts of high fluorinated butyl, 15 parts of mulberry fibrilia, 5 parts of waterproof auxiliary agent, 4 parts of nano silver ion antibacterial agent, 20 parts of gelling agent and 20 parts of ethanol; wherein the modified mulberry hemp fiber is obtained by degreasing and carbonizing the mulberry hemp fiber.
The preparation method comprises the following steps:
(1) Taking ethanol, acrylic acid, polyurethane resin, high fluorinated butyl, a gelatinizing agent and a waterproof auxiliary agent according to weight ratio, and placing the ethanol, the acrylic acid, the polyurethane resin, the high fluorinated butyl, the gelatinizing agent and the waterproof auxiliary agent into a container, wherein the concentration of an ethanol solution is 80-95wt%, the gelatinizing agent adopts sodium polyacrylate, the waterproof auxiliary agent adopts C8-C12 fluorine to replace organic acid, and stirring the mixture at 75 ℃ for 35min to obtain a mixture A;
(2) Removing impurities from Morus alba fibers, grinding Morus alba fibers into powder, adding powdery Morus alba fibers into the mixture A, and stirring at 85deg.C for 30min to obtain a mixture B;
(3) Adding the nano silver ion antibacterial agent and the waterproof auxiliary agent into the mixture B according to the weight ratio, and stirring for 25min to obtain a mixture C;
(4) And (3) coating the mixture C on the outer surface of the fabric, uniformly spreading the mixture C on the fabric by adopting a compression roller, and cooling and solidifying to obtain the DWR waterproof and antifouling fabric coating.
Comparative example 2
The fabric coating of the comparative example comprises the following preparation raw materials in parts by weight: 15 parts of acrylic acid, 20 parts of polyurethane resin, 9 parts of high fluorinated butyl, 15 parts of modified cotton fiber, 5 parts of waterproof auxiliary agent, 4 parts of nano silver ion antibacterial agent, 20 parts of gelling agent and 20 parts of ethanol; wherein the modified cotton fiber is obtained by degreasing and carbonizing the cotton fiber.
The preparation method comprises the following steps:
(1) Taking ethanol, acrylic acid, polyurethane resin, high fluorinated butyl, a gelatinizing agent and a waterproof auxiliary agent according to weight ratio, and placing the ethanol, the acrylic acid, the polyurethane resin, the high fluorinated butyl, the gelatinizing agent and the waterproof auxiliary agent into a container, wherein the concentration of an ethanol solution is 80-95wt%, the gelatinizing agent adopts sodium polyacrylate, the waterproof auxiliary agent adopts C8-C12 fluorine to replace organic acid, and stirring the mixture at 75 ℃ for 35min to obtain a mixture A;
(2) Removing impurities from cotton fiber, degreasing and carbonizing to obtain modified cotton fiber, grinding the modified cotton fiber into powder, adding the powdery modified cotton fiber into the mixture A, and stirring at 85 ℃ for 30min to obtain a mixture B;
the degreasing treatment comprises uniformly spreading cotton fibers, cleaning the cotton fibers with water, adding water into an enamel pot, adding NaOH with the weight of 6.5% of the water into the pot, capping and boiling for 10 minutes, washing with water while rubbing for 10 minutes, and finally placing the washed cotton fibers on clean paper until the cotton fibers are dried, carbonization treatment comprises filling the cotton fibers into a carbonization kettle, firing at 800 ℃ for 60 hours, and naturally cooling;
(3) Adding the nano silver ion antibacterial agent and the waterproof auxiliary agent into the mixture B according to the weight ratio, and stirring for 25min to obtain a mixture C;
(4) And (3) coating the mixture C on the outer surface of the fabric, uniformly spreading the mixture C on the fabric by adopting a compression roller, and cooling and solidifying to obtain the DWR waterproof and antifouling fabric coating.
Comparative example 3
The fabric coating of the comparative example comprises the following preparation raw materials in parts by weight: 15 parts of acrylic acid, 20 parts of polyurethane resin, 9 parts of high fluorinated butyl, 15 parts of modified mulberry fibrilia, 5 parts of waterproof auxiliary agent, 4 parts of nano silver ion antibacterial agent, 20 parts of gelling agent and 20 parts of ethanol; wherein the modified mulberry hemp fiber is obtained by degreasing the mulberry hemp fiber.
The preparation method comprises the following steps:
(1) Taking ethanol, acrylic acid, polyurethane resin, high fluorinated butyl, a gelatinizing agent and a waterproof auxiliary agent according to weight ratio, and placing the ethanol, the acrylic acid, the polyurethane resin, the high fluorinated butyl, the gelatinizing agent and the waterproof auxiliary agent into a container, wherein the concentration of an ethanol solution is 80-95wt%, the gelatinizing agent adopts sodium polyacrylate, the waterproof auxiliary agent adopts C8-C12 fluorine to replace organic acid, and stirring the mixture at 75 ℃ for 35min to obtain a mixture A;
(2) Removing impurities from the mulberry hemp fiber, degreasing to obtain modified mulberry hemp fiber, grinding the modified mulberry hemp fiber into powder, adding the powdery modified mulberry hemp fiber into the mixture A, and stirring at 85 ℃ for 30min to obtain a mixture B;
wherein, degreasing treatment refers to uniformly spreading out the mulberry hemp fibers, cleaning the mulberry hemp fibers with water, putting the mulberry hemp fibers into an enamel pot, adding water at the same time, adding NaOH with the weight of 6.5% of the water into the pot, capping and boiling for 10 minutes, washing with water and rubbing for 10 minutes, and finally putting the washed mulberry hemp fibers on clean paper until the mulberry hemp fibers are dried;
(3) Adding the nano silver ion antibacterial agent and the waterproof auxiliary agent into the mixture B according to the weight ratio, and stirring for 25min to obtain a mixture C;
(4) And (3) coating the mixture C on the outer surface of the fabric, uniformly spreading the mixture C on the fabric by adopting a compression roller, and cooling and solidifying to obtain the DWR waterproof and antifouling fabric coating.
Comparative example 4
The fabric coating of the comparative example comprises the following preparation raw materials in parts by weight: 15 parts of acrylic acid, 20 parts of polyurethane resin, 9 parts of high fluorinated butyl, 15 parts of modified mulberry fibrilia, 5 parts of waterproof auxiliary agent, 4 parts of nano silver ion antibacterial agent, 20 parts of gelling agent and 20 parts of ethanol; wherein the modified mulberry hemp fiber is obtained by carbonizing mulberry hemp fiber.
The preparation method comprises the following steps:
(1) Taking ethanol, acrylic acid, polyurethane resin, high fluorinated butyl, a gelatinizing agent and a waterproof auxiliary agent according to weight ratio, and placing the ethanol, the acrylic acid, the polyurethane resin, the high fluorinated butyl, the gelatinizing agent and the waterproof auxiliary agent into a container, wherein the concentration of an ethanol solution is 80-95wt%, the gelatinizing agent adopts sodium polyacrylate, the waterproof auxiliary agent adopts C8-C12 fluorine to replace organic acid, and stirring the mixture at 75 ℃ for 35min to obtain a mixture A;
(2) Removing impurities from the mulberry hemp fiber, carbonizing the mulberry hemp fiber to obtain modified mulberry hemp fiber, grinding the modified mulberry hemp fiber into powder, adding the powdery modified mulberry hemp fiber into the mixture A, and stirring at 85 ℃ for 30min to obtain a mixture B;
wherein the carbonization treatment refers to that the mulberry and fibrilia is put into a carbonization kettle, and is baked for 60 hours at the high temperature of 800 ℃, and finally is naturally cooled;
(3) Adding the nano silver ion antibacterial agent and the waterproof auxiliary agent into the mixture B according to the weight ratio, and stirring for 25min to obtain a mixture C;
(4) And (3) coating the mixture C on the outer surface of the fabric, uniformly spreading the mixture C on the fabric by adopting a compression roller, and cooling and solidifying to obtain the DWR waterproof and antifouling fabric coating.
Performance test:
1. permeability test of DWR waterproof and antifouling fabric coating
The penetration depth of the DWR waterproof and antifouling fabric coating is used for representing the improvement effect of the modified mulberry fibrilia on the DWR waterproof and antifouling fabric coating. Samples of the DWR waterproof and antifouling fabric coatings prepared in example 2 and comparative examples 1 to 4 were taken. And meanwhile, a blank group is arranged, modified mulberry hemp fibers are not added when the DWR waterproof and antifouling fabric coating is manufactured, and only degreasing treatment is carried out on the modified mulberry hemp fibers and only carbonization treatment is carried out on the modified mulberry hemp fibers respectively to serve as a comparison. The penetration depth of DWR waterproof and antifouling fabric coatings of example 2 and comparative examples 1-4 were tested for a total of six test groups, yielding table 1:
as can be seen from the above tableThe DWR waterproof and antifouling fabric coating prepared in the embodiment 2 of the invention has the coating area of 50mm 2 The penetration depth of the coating to the cloth is smaller than that of the blank group when the thickness of the coating is 0.5 mm; comparative example 1 the modified mulberry fibrilia was changed to the mulberry fibrilia, resulting in a spreading area of 50mm 2 The penetration depth into the cloth increased by 50% when the coating thickness was 0.5mm, and the coating area was 50mm in comparative example 2 due to the replacement of the modified mulberry fibrilia with the modified cotton fiber 2 The penetration depth of the cloth increased by 77.7% when the coating thickness was 0.5mm, the modified mulberry fibrilia was not carbonized in comparative example 3, and the coating area was 50mm 2 The penetration depth of the cloth increased by 66.6% when the coating thickness was 0.5mm, the modified mulberry fibrilia was not degreased in comparative example 4, and the coating area was 50mm 2 The penetration depth into the cloth and the numerical value of example 2 do not change much at a coating thickness of 0.5mm, and the effects of comparative example 1 and comparative example 2 are even higher than those of the blank group, thereby indicating that the use of the special fiber of the mulberry fibrilia and the modification process of carbonization treatment play a key role in the penetration depth of the coating on the cloth.
2. Crack resistance test of DWR waterproof and antifouling fabric coating
The DWR waterproof and antifouling fabric coating prepared in example 2 and comparative examples 1-4 is respectively selected, a blank group is arranged at the same time, and modified mulberry hemp fiber is not added when the DWR waterproof and antifouling fabric coating is prepared to serve as a control. Six test groups are adopted for pulling with the same strength, the DWR waterproof and antifouling fabric coatings of the example 2 and the comparative examples 1-4 are tested for the crack resistance, and the following table is obtained through statistics of results:
| group of | With or without the occurrence of strain/tear |
| Example 2 | Without any means for |
| Comparative example 1 | White traumatism mark appears |
| Comparative example 2 | White traumatism mark appears |
| Comparative example 3 | Without any means for |
| Comparative example 4 | Tear occurrence |
| Blank group | A small amount of white strain marks appear |
As can be seen from the above table, the DWR waterproof and antifouling fabric coating prepared in the embodiment 2 of the invention does not generate a strain/tear condition, but the DWR waterproof and antifouling fabric coating prepared in the comparative example 1 has a white strain mark due to the fact that the modified mulberry fiber is replaced by the mulberry fiber, the modified cotton fiber is replaced by the modified mulberry fiber in the comparative example 2, the modified mulberry fiber is not carbonized in the comparative example 3, the prepared DWR waterproof and antifouling fabric coating does not generate a strain/tear, the modified mulberry fiber is not degreased in the comparative example 4, the prepared DWR waterproof and antifouling fabric coating has a tear mark which is more than that of the comparative example 1 and the comparative example 2, the effect of the mulberry fiber in preparing the DWR waterproof and antifouling fabric coating is better, and the critical effect of the degreasing treatment on the tearing strength of the DWR waterproof and antifouling fabric coating is provided by the comparative example 3 and the comparative example 3.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (7)
1. The DWR waterproof and antifouling fabric coating is characterized by comprising the following preparation raw materials in parts by weight: 10-20 parts of acrylic acid, 15-25 parts of polyurethane resin, 6-12 parts of high fluorinated butyl, 10-20 parts of modified mulberry fibrilia, 3-8 parts of waterproof auxiliary agent, 3-5 parts of nano silver ion antibacterial agent, 15-25 parts of gelatinizing agent and 15-25 parts of ethanol;
wherein the modified mulberry hemp fiber is obtained by degreasing and carbonizing the mulberry hemp fiber.
2. A method for preparing the DWR waterproof and antifouling fabric coating according to claim 1, which is characterized by comprising the following steps:
(1) Taking ethanol, acrylic acid, polyurethane resin, high fluorinated butyl, a gelatinizing agent and a waterproof auxiliary agent, placing the materials into a container, and stirring the materials at 70-80 ℃ for 30-40min to obtain a mixture A;
(2) Removing impurities from the mulberry hemp fiber, degreasing and carbonizing the mulberry hemp fiber to obtain modified mulberry hemp fiber, grinding the modified mulberry hemp fiber into powder, adding the powdery modified mulberry hemp fiber into the mixture A, and stirring at 80-90 ℃ for 25-35min to obtain a mixture B;
(3) Adding the nano silver ion antibacterial agent and the waterproof auxiliary agent into the mixture B, and stirring for 20-30min to obtain a mixture C;
(4) And (3) coating the mixture C on the outer surface of the fabric, uniformly spreading the mixture C on the fabric by adopting a compression roller, and cooling and solidifying to obtain the DWR waterproof and antifouling fabric coating.
3. The method for preparing the DWR waterproof and antifouling fabric coating according to claim 2, wherein the degreasing treatment is to uniformly spread out the mulberry hemp fiber, clean the mulberry hemp fiber with water, put the mulberry hemp fiber into an enamel pot while adding water, then add NaOH which is 5% -8% of the water weight into the pot, cover and boil for 10 minutes, then wash with water and rub for 10 minutes, and finally put the washed mulberry hemp fiber on clean paper until the mulberry hemp fiber dries.
4. The method for preparing the DWR waterproof and antifouling fabric coating according to claim 2, wherein the carbonization treatment is to put the mulberry and fibrilia into a carbonization kettle, fire for 48-72 hours at a high temperature of 750-850 ℃, and finally cool naturally.
5. The preparation method of the DWR waterproof and antifouling fabric coating according to claim 2, wherein the waterproof auxiliary agent is a C8-C12 fluorine substituted organic acid.
6. The method for preparing the DWR waterproof and antifouling fabric coating according to claim 2, wherein the gelling agent is sodium polyacrylate.
7. The method for preparing the DWR waterproof and antifouling fabric coating according to claim 2, wherein the concentration of the ethanol solution is 80-95wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310148013.2A CN115992457A (en) | 2023-02-22 | 2023-02-22 | DWR waterproof and antifouling fabric coating and preparation method thereof |
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| CN202310148013.2A CN115992457A (en) | 2023-02-22 | 2023-02-22 | DWR waterproof and antifouling fabric coating and preparation method thereof |
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| CN202310148013.2A Pending CN115992457A (en) | 2023-02-22 | 2023-02-22 | DWR waterproof and antifouling fabric coating and preparation method thereof |
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- 2023-02-22 CN CN202310148013.2A patent/CN115992457A/en active Pending
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