Mildew-proof polyethylene fabric and its production method and application

Abstract

The present application relates to a kind of mildew-proof polyethylene fabrics and its production method and application, raw material includes polyethylene, the ratio of cold shrink strength and heat shrink strength is 2:1~6:1;Cold shrink strength is 2.5~5.5N / mm 2 ;Mildew-proof grade of mildew-proof polyethylene fabric is less than 3 levels.This application can significantly improve the antifungal and antibacterial function of the product by adding copper-zinc-doped nano titanium nitride modifier;Mechanical properties are also improved, and its application range is expanded.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flash evaporation, in particular to a mildew-proof polyethylene fabric and a production method and application thereof.

BACKGROUND

[0002] In the south, there is a rainy season every year, and the wet weather makes people uncomfortable, especially clothes, which are difficult to dry. Sometimes there is a moldy smell. You may open the closet and find that the clothes are moldy.

[0003] Mold is widely present in people's daily life and can rapidly multiply in warm and humid environments, causing mold on textiles, furniture, and food. Mold spores form mold spots that cause local discoloration or discoloration of fabrics, and even biological degradation that causes fabrics to be brittle and damaged, resulting in damage to their use value and hygiene performance. Mold spores flow in the air, and inhaling mold spores can cause mold pneumonia (especially in infants) and asthma, induce allergies, and cause skin or mucous membrane inflammation.

[0004] Mold is a multicellular microorganism composed of spores and mycelium, of which spores are very small mold propagules that float in the air and spread with the wind. When the air humidity is high, it is particularly suitable for the growth of mold, and reducing air humidity can inhibit the growth of mold; at the same time, keeping the goods dry and reducing the water content of textiles can also inhibit the growth of mold.

[0005] For items that have already been moldy, mold should be removed as soon as possible to prevent mold spores from further spreading, and the goods should be kept dry and the air humidity should be low, and if necessary, a desiccant should be placed in the packaging bag.

[0006] The present application is directed to the technical problem that the conventional textiles have poor mold resistance, and the mold resistance of the product is improved by adding a mold resistance aid and a flash evaporation process, and the mechanical properties are also improved.

SUMMARY

[0007] The present application aims to overcome the shortcomings of the prior art and provide a mildew-proof polyethylene fabric and a production method and application thereof.

[0008] The purpose of the present application is achieved by the following technical solutions:

[0009] A mildew-proof polyethylene fabric, the ratio of cold shrinkage strength to hot shrinkage strength is 2:1-6:1;

[0010] △σ=σ c / σ r ;

[0011] σ c is the cold shrinkage strength;

[0012] σr for the hot shrinkage strength;

[0013] The ratio of the cold shrinkage strength to the hot shrinkage strength of the mildew-proof polyethylene fabric is 2:1-3:1.

[0014] The ratio of the cold shrinkage strength to the hot shrinkage strength of the mildew-proof polyethylene fabric is 3:1-4:1.

[0015] The ratio of the cold shrinkage strength to the hot shrinkage strength of the mildew-proof polyethylene fabric is 4:1-5:1.

[0016] The ratio of the cold shrinkage strength to the hot shrinkage strength of the mildew-proof polyethylene fabric is 5:1-6:1.

[0017] A mildew-proof polyethylene fabric, the cold shrinkage strength of which is 2.5-5.5 N / mm 2 .

[0018] A mildew-proof polyethylene fabric, the cold shrinkage strength of which is 3-4 N / mm 2 .

[0019] A mildew-proof polyethylene fabric, the cold shrinkage strength of which is 4-5 N / mm 2 .

[0020] A mildew-proof polyethylene fabric, the mildew-proof grade of which is less than 3.

[0021] A mildew-proof polyethylene fabric, the mildew-proof grade of which is 0.

[0022] A mildew-proof polyethylene fabric, the mildew-proof grade of which is 1.

[0023] A mildew-proof polyethylene fabric, the tear strength of which is 9-11 kN / m.

[0024] A mildew-proof polyethylene fabric, the tear strength of which is 9-10 kN / m.

[0025] A mildew-proof polyethylene fabric, the tear strength of which is 10-11 kN / m.

[0026] A production method of a mildew-proof polyethylene fabric, which comprises the following technical steps:

[0027] Dissolving a spinning raw material in a spinning solvent to form a spinning solution, then performing flash spinning on the spinning solution to form a flash spun fiber, then performing web laying on the flash spun fiber, and finally forming the mildew-proof polyethylene fabric through a hot pressing process; wherein the flash spinning temperature is 180-250 DEG C, and the hot pressing temperature is 105-115 DEG C.

[0028] The spinning raw material is polyethylene and a nano-titanium nitride modifier doped with copper and zinc, wherein the mass fraction of the nano-titanium nitride modifier doped with copper and zinc in the spinning raw material is 3-5%.

[0029] The mass fraction of the spinning material in the spinning solution is 10-17%.

[0030] The spinning solvent is aromatic hydrocarbons, aliphatic hydrocarbons, alicyclic hydrocarbons, unsaturated hydrocarbons, halogenated hydrocarbons, alcohols, esters, ethers, ketones, nitriles, amides, fluorocarbons, sulfur dioxide, carbon disulfide, nitromethane, water, and a mixture of one or more of the above.

[0031] A preparation method of a copper-zinc-doped nano-titanium nitride modifier, comprising the following steps:

[0032] The nano-titanium nitride is dispersed in an alkaline solution, and then a mixed solution of copper sulfate and zinc sulfate is added, and the mixture is separated by filtration, and then grinding and secondary calcination processes are performed to obtain an intermediate product; the intermediate product is added to a boric acid solution, and then filtered and separated, and then third calcination is performed to obtain the copper-zinc-doped nano-titanium nitride modifier.

[0033] The secondary calcination process is as follows: the first calcination temperature is 130-150 DEG C, the holding time is 30-80 minutes, then the second calcination is performed, the heating rate is 5 DEG C / min, the second calcination temperature is 600-700 DEG C, and the holding time is 2-4 hours.

[0034] The third calcination is performed at a calcination temperature of 450-500 DEG C for 2-3 hours.

[0035] The mass ratio of copper sulfate to zinc sulfate is 1:1.5-1:2.5.

[0036] The mass ratio of copper sulfate to nano-titanium nitride is 1:2.5-1:3.5.

[0037] The mass fraction of the intermediate product in the boric acid solution is 2-5%.

[0038] The mass fraction of boric acid in the boric acid solution is 8-15%.

[0039] The nano-titanium nitride ceramic powder has high purity, small particle size, large specific surface area, high surface activity, and ultraviolet light shielding of more than 80%, and has good barrier performance. Meanwhile, it can shield yellow light and improve the brightness and transparency of the product; a small amount of nano-titanium nitride powder dispersed in PE can greatly accelerate the crystallization rate, make the molding simple, improve the comprehensive strength of the plastic, and at the same time, the nano effect can greatly improve the mechanical properties of the PE product. Due to the addition of the copper-zinc-doped nano-titanium nitride modifier, when the addition amount is too low, the performance improvement function of the material is not obvious; when the addition amount is too much, it has a reverse effect on the performance of the material, mainly because too much addition can easily cause agglomeration and defects, thereby destroying the overall structure of the matrix, and finally leading to performance degradation. Therefore, only when the addition amount is moderate, it can be filled into the matrix to reduce the generation of cracks in the matrix, thereby sharing the load when stressed, thereby improving the performance of the product, which is the main reason for the selection of a suitable addition amount through many tests.

[0040] Compared with the prior art, the positive effects of the present application are:

[0041] The addition of the copper-zinc-doped nano-titanium nitride modifier can significantly improve the mildew-resistant and antibacterial functions of the product, and at the same time, improve the mechanical properties and expand the application range.

DETAILED DESCRIPTION

[0042] The following provides a specific embodiment of a mildew-resistant polyethylene fabric and a production method and application thereof.

[0043] Example 1

[0044] A production method of a mildew-resistant polyethylene fabric, which comprises the following technical steps:

[0045] The spinning raw material is dissolved in a spinning solvent to form a spinning solution, then the spinning solution is subjected to flash spinning to form flash fibers, and then the flash fibers are laid and hot-pressed to form the mildew-resistant polyethylene fabric; wherein the flash spinning temperature is 200℃, and the hot-pressing temperature is 105℃.

[0046] The spinning raw material is polyethylene and a mildew-resistant agent, wherein the mass fraction of the mildew-resistant agent in the spinning raw material is 3%.

[0047] The mass fraction of the spinning raw material in the spinning solution is 11%.

[0048] The spinning solvent is dichloromethane, 1,1,1,2-tetrafluoroethane, 1H perfluorohexane, and hydrofluoroether; the weight ratio of the four is 7:1:1:1.

[0049] A preparation method of a copper-zinc-doped nano-titanium nitride modifier, which comprises the following technical steps:

[0050] The nano titanium nitride is dispersed in an alkaline solution, and then a mixed solution of copper sulfate and zinc sulfate is added. The mixture is separated by filtration, and then is ground and subjected to a secondary calcination process to obtain an intermediate product. The intermediate product is then added to a boric acid solution, and then is subjected to filtration separation, and then is subjected to a third calcination to obtain a copper-zinc-doped nano titanium nitride modifier.

[0051] The secondary calcination process is as follows: the first calcination temperature is 130-150℃, the holding time is 30-80 minutes, then the second calcination is performed, the heating rate is 5℃ / min, the second calcination temperature is 600-700℃, and the holding time is 2-4 hours.

[0052] The third calcination is performed at a temperature of 450-500℃ for 2-3 hours.

[0053] The mass ratio of copper sulfate to zinc sulfate is 1:1.5.

[0054] The mass ratio of copper sulfate to nano titanium nitride is 1:2.5.

[0055] The mass fraction of the intermediate product in the boric acid solution is 2%.

[0056] The mass fraction of boric acid in the boric acid solution is 10%.

[0057] The sample test data of the present application are shown in Table 1.

[0058] Performance test:

[0059] 1. Test of cold shrinkage strength and thermal shrinkage strength: according to the national standard GB / T 34848-2017, test the thermal shrinkage force F r , the cold shrinkage force F c generated during the cold shrinkage process, and the initial area S of the sample, take 5 groups of transverse samples and 5 groups of longitudinal samples for testing, and then calculate the cold shrinkage strength σ c , the thermal shrinkage strength σ r ; then calculate: Δσ = σ c / σ r .

[0060] 2. Test of mildew resistance grade: according to the national standard GB / T 24346-2009, test the mildew resistance grade; the test uses the following strains: Aspergillus niger CGMCC3.5487, Chaetomium globosum CGMCC3.3601, Penicillium funiculosum CGMCC3.3875, Trichoderma viride CGMCC3.2941, and the test environment conditions are: 28℃, humidity 90%, and culture time 28 days.

[0061] 3. Test of tear strength: according to the national standard GB / T 16578.1-2008 / ISO 6383-1:1983, the sample is tested, wherein F is the tear force of the sample, and d is the thickness of the sample; 10 groups of transverse samples are tested and then averaged, and the tear strength is calculated according to the formula: P = [F / d].

[0062] 4. Test of whiteness: according to the national standard GB / T22880-2008 (Determination of CIE whiteness of paper and paperboard, D65 / 10° outdoor daylight), the whiteness is obtained by measuring the CIE tristimulus value under the standard specified conditions.

[0063] 5. Test of antibacterial performance: according to the national standard GB / T 20944.2-2007, the specific bacteria are Staphylococcus aureus, Klebsiella pneumoniae and Escherichia coli; the culture conditions are 37℃±2℃ and 90%±2%; the culture time is 18-24 hours. The antibacterial rate (i.e. the bacteriostatic rate) indicates that more than 95% have antibacterial performance, and when it is greater than 99%, it has better antibacterial function.

[0064] Example 2

[0065] A production method of a mildew-proof polyethylene fabric, which comprises the following technical steps:

[0066] The spinning raw material is dissolved in a spinning solvent to form a spinning solution, and then the spinning solution is subjected to flash spinning to form a flash fiber, and then the flash fiber is laid on a web, and finally a mildew-proof polyethylene fabric is formed through a hot pressing process; wherein the flash spinning temperature is 205℃, and the hot pressing temperature is 107℃.

[0067] The spinning raw material is polyethylene and a mildew-proof agent, wherein the mass fraction of the mildew-proof agent in the spinning raw material is 3.5%.

[0068] The mass fraction of the spinning raw material in the spinning solution is 12%.

[0069] The spinning solvent is dichloromethane, 1,1,1,2-tetrafluoroethane, 1H perfluorohexane, and hydrofluoroether; the weight ratio of the four is 7:1:1:1.

[0070] A preparation method of a copper-zinc-doped nano-titanium nitride modifier, which comprises the following technical steps:

[0071] The nano-titanium nitride is dispersed in an alkaline solution, and then a mixed solution of copper sulfate and zinc sulfate is added, and the mixture is separated by filtration, and then is ground and subjected to a second calcination process to obtain an intermediate product; the intermediate product is then added to a boric acid solution, and then is filtered and separated, and then is subjected to a third calcination to obtain the copper-zinc-doped nano-titanium nitride modifier.

[0072] The mass ratio of copper sulfate and zinc sulfate is 1:1.8.

[0073] The mass ratio of copper sulfate and nano-titanium nitride is 1:2.8.

[0074] The mass fraction of the intermediate product in the boric acid solution is 4%.

[0075] The mass fraction of boric acid in the boric acid solution is 10%.

[0076] The sample test data of this embodiment 2 are shown in Table 1.

[0077] Embodiment 3

[0078] A production method of a mildew-proof polyethylene fabric comprises the following technical steps:

[0079] The spinning raw material is dissolved in a spinning solvent to form a spinning solution, and then the spinning solution is subjected to flash spinning to form a flash fiber, and then the flash fiber is laid on a web, and finally a mildew-proof polyethylene fabric is formed through a hot pressing process; wherein the flash spinning temperature is 205℃, and the hot pressing temperature is 110℃.

[0080] The spinning raw material is polyethylene and a mildew-proof agent, wherein the mass fraction of the mildew-proof agent in the spinning raw material is 4%.

[0081] The mass fraction of the spinning raw material in the spinning solution is 13%.

[0082] The spinning solvent is dichloromethane, 1,1,1,2-tetrafluoroethane, 1H perfluorohexane, and hydrofluoroether, and the weight ratio of the four is 7:1:1:1.

[0083] A preparation method of a copper-zinc-doped nano-titanium nitride modifier comprises the following steps:

[0084] The nano-titanium nitride is dispersed in an alkaline solution, and then a mixed solution of copper sulfate and zinc sulfate is added, and the mixture is separated by filtration, and then grinding and secondary calcination processes are performed to obtain an intermediate product; the intermediate product is then added to a boric acid solution, and then filtered and separated, and then subjected to a third calcination to obtain the copper-zinc-doped nano-titanium nitride modifier.

[0085] The mass ratio of copper sulfate and zinc sulfate is 1:2.

[0086] The mass ratio of copper sulfate and nano-titanium nitride is 1:3.

[0087] The mass fraction of the intermediate product in the boric acid solution is 4%.

[0088] The mass fraction of boric acid in the boric acid solution is 10%.

[0089] The sample test data of this embodiment 3 are shown in Table 1.

[0090] The sample of this embodiment 3 is placed in a normal temperature environment, and after one year, the mildew resistance level is 0, and the antibacterial effect is 97.5%; it can be seen that the mildew resistance performance does not change, and the antibacterial effect partially decreases.

[0091] Embodiment 4

[0092] A production method of a mildew-resistant polyethylene fabric comprises the following technical steps:

[0093] The spinning raw material is dissolved in the spinning solvent to form a spinning solution, and then the spinning solution is subjected to flash spinning to form a flash fiber, and then the flash fiber is laid on a web, and finally a mildew-resistant polyethylene fabric is formed through a hot pressing process; wherein the flash spinning temperature is 215℃, and the hot pressing temperature is 112℃.

[0094] The spinning raw material is polyethylene and a mildew-resistant agent, wherein the mass fraction of the mildew-resistant agent in the spinning raw material is 4.5%.

[0095] The mass fraction of the spinning raw material in the spinning solution is 14%.

[0096] The spinning solvent is dichloromethane, 1,1,1,2-tetrafluoroethane, 1H perfluorohexane, and hydrofluoroether; the weight ratio of the four is 7:1:1:1.

[0097] A preparation method of a copper-zinc-doped nano-titanium nitride modifier comprises the following steps:

[0098] The nano-titanium nitride is dispersed in an alkaline solution, and then a mixed solution of copper sulfate and zinc sulfate is added, and the mixture is separated by filtration, and then grinding and secondary calcination processes are performed to obtain an intermediate product; the intermediate product is then added to a boric acid solution, and then filtered and separated, and then subjected to a third calcination to obtain the copper-zinc-doped nano-titanium nitride modifier.

[0099] The mass ratio of copper sulfate to zinc sulfate is 1:2.2.

[0100] The mass ratio of copper sulfate to nano-titanium nitride is 1:3.2.

[0101] The mass fraction of the intermediate product in the boric acid solution is 4%.

[0102] The mass fraction of boric acid in the boric acid solution is 10%.

[0103] The test data of the sample of this embodiment 4 are shown in Table 1.

[0104] Embodiment 5

[0105] A production method of a mildew-resistant polyethylene fabric comprises the following technical steps:

[0106] The spinning raw material is dissolved in the spinning solvent to form a spinning solution, then the spinning solution is subjected to flash spinning to form flash fibers, then the flash fibers are laid, and finally the anti-mildew polyethylene fabric is formed through a hot pressing process; wherein the flash spinning temperature is 220 DEG C, and the hot pressing temperature is 115 DEG C.

[0107] The spinning raw material is polyethylene and an antifungal agent, wherein the mass fraction of the antifungal agent in the spinning raw material is 5%.

[0108] The mass fraction of the spinning raw material in the spinning solution is 15%.

[0109] The spinning solvent is dichloromethane, 1,1,1,2-tetrafluoroethane, 1H perfluorohexane, and hydrofluoroether, and the weight ratio of the four is 7:1:1:1.

[0110] A preparation method of a copper-zinc-doped nano-titanium nitride modifier comprises the following steps:

[0111] The nano-titanium nitride is dispersed in an alkaline solution, and then a mixed solution of copper sulfate and zinc sulfate is added, and the mixture is separated by filtration, and then is ground and subjected to a second calcination process to obtain an intermediate product; the intermediate product is added to a boric acid solution, and then is separated by filtration, and then is subjected to a third calcination process to obtain the copper-zinc-doped nano-titanium nitride modifier.

[0112] The mass ratio of copper sulfate to zinc sulfate is 1:2.5.

[0113] The mass ratio of copper sulfate to nano-titanium nitride is 1:3.5.

[0114] The mass fraction of the intermediate product in the boric acid solution is 5%.

[0115] The mass fraction of boric acid in the boric acid solution is 10%.

[0116] The sample test data of Example 5 are shown in Table 1.

[0117] Comparative Example 1

[0118] A production method of an anti-mildew polyethylene fabric comprises the following technical steps:

[0119] The spinning raw material is dissolved in the spinning solvent to form a spinning solution, then the spinning solution is subjected to flash spinning to form flash fibers, then the flash fibers are laid, and finally the anti-mildew polyethylene fabric is formed through a hot pressing process; wherein the flash spinning temperature is 205 DEG C, and the hot pressing temperature is 110 DEG C.

[0120] The spinning raw material is polyethylene and an antifungal agent, wherein the mass fraction of the antifungal agent in the spinning raw material is 4%.

[0121] The mass fraction of the spinning raw material in the spinning solution is 13%.

[0122] The spinning solvent is dichloromethane, 1,1,1,2-tetrafluoroethane, 1H perfluorohexane, and hydrofluoroether, and the weight ratio of the four is 7:1:1:1.

[0123] The mildew-proof agent is a mixture of cuprous oxide, zinc borate, and nano titanium nitride, and the mass ratio of the three is 1:1:3.

[0124] The sample test data of the present comparative example 1 are shown in Table 1.

[0125] Comparative example 2

[0126] A production method of a mildew-proof polyethylene fabric comprises the following technical steps:

[0127] The spinning raw material is dissolved in the spinning solvent to form a spinning solution, and then the spinning solution is subjected to flash spinning to form a flash fiber, which is then laid to form a mildew-proof polyethylene fabric through a hot pressing process; wherein the flash spinning temperature is 205℃, and the hot pressing temperature is 110℃.

[0128] The spinning raw material is polyethylene and a mildew-proof agent, wherein the mass fraction of the mildew-proof agent in the spinning raw material is 1%.

[0129] The mass fraction of the spinning raw material in the spinning solution is 13%.

[0130] The spinning solvent is dichloromethane, 1,1,1,2-tetrafluoroethane, 1H perfluorohexane, and hydrofluoroether, and the weight ratio of the four is 7:1:1:1.

[0131] A preparation method of a copper-zinc-doped nano titanium nitride modifier comprises the following steps:

[0132] The nano titanium nitride is dispersed in an alkaline solution, and then a mixed solution of copper sulfate and zinc sulfate is added, and the mixture is separated by filtration, and then ground and subjected to a second calcination process to obtain an intermediate product; the intermediate product is then added to a boric acid solution, and then filtered and separated, and then subjected to a third calcination to obtain the copper-zinc-doped nano titanium nitride modifier.

[0133] The mass ratio of copper sulfate to zinc sulfate is 1:2.

[0134] The mass ratio of copper sulfate to nano titanium nitride is 1:3.

[0135] The mass fraction of the intermediate product in the boric acid solution is 4%.

[0136] The mass fraction of boric acid in the boric acid solution is 10%.

[0137] The sample test data of the present application are shown in Table 1.

[0138] The sample test data of the present comparative example 2 are shown in Table 1.

[0139] Comparative example 3

[0140] A production method of a mildew-proof polyethylene fabric comprises the following technical steps:

[0141] The spinning raw material is dissolved in a spinning solvent to form a spinning solution, and then the spinning solution is subjected to flash spinning to form a flash fiber, and then the flash fiber is laid up, and finally a mildew-proof polyethylene fabric is formed through a hot pressing process; wherein the flash spinning temperature is 205℃, and the hot pressing temperature is 110℃.

[0142] The spinning raw material is polyethylene and a mildew-proof agent, wherein the mass fraction of the mildew-proof agent in the spinning raw material is 2%.

[0143] The mass fraction of the spinning raw material in the spinning solution is 13%.

[0144] The spinning solvent is dichloromethane, 1,1,1,2-tetrafluoroethane, 1H perfluorohexane, and hydrofluoroether; the weight ratio of the four is 7:1:1:1.

[0145] A preparation method of a copper-zinc-doped nano-titanium nitride modifier comprises the following steps:

[0146] The nano-titanium nitride is dispersed in an alkaline solution, and then a mixed solution of copper sulfate and zinc sulfate is added, and the mixture is separated by filtration, and then grinding and secondary calcination processes are performed to obtain an intermediate product; the intermediate product is then added to a boric acid solution, and then filtered and separated, and then subjected to a third calcination to obtain the copper-zinc-doped nano-titanium nitride modifier.

[0147] The mass ratio of copper sulfate to zinc sulfate is 1:2.

[0148] The mass ratio of copper sulfate to nano-titanium nitride is 1:3.

[0149] The mass fraction of the intermediate product in the boric acid solution is 4%.

[0150] The mass fraction of boric acid in the boric acid solution is 10%.

[0151] The sample test data of the present application are shown in Table 1.

[0152] The sample test data of the present comparative example 3 are shown in Table 1.

[0153] Comparative example 4

[0154] A production method of a mildew-proof polyethylene fabric comprises the following technical steps:

[0155] The spinning raw material is dissolved in the spinning solvent to form a spinning solution, then the spinning solution is subjected to flash spinning to form flash fibers, then the flash fibers are laid, and finally the anti-mildew polyethylene fabric is formed through a hot pressing process; wherein the flash spinning temperature is 205 DEG C, and the hot pressing temperature is 110 DEG C.

[0156] The spinning raw material is polyethylene and an antifungal agent, wherein the mass fraction of the antifungal agent in the spinning raw material is 6%.

[0157] The mass fraction of the spinning raw material in the spinning solution is 13%.

[0158] The spinning solvent is dichloromethane, 1,1,1,2-tetrafluoroethane, 1H perfluorohexane, and hydrofluoroether, and the weight ratio of the four is 7:1:1:1.

[0159] A preparation method of a copper-zinc-doped nano-titanium nitride modifier, comprising the following steps:

[0160] The nano-titanium nitride is dispersed in an alkaline solution, then a mixed solution of copper sulfate and zinc sulfate is added, the mixture is separated by filtration, and then the intermediate product is obtained by grinding and secondary calcination; the intermediate product is added to a boric acid solution, then filtered and separated, and then calcined for the third time to obtain the copper-zinc-doped nano-titanium nitride modifier.

[0161] The mass ratio of copper sulfate to zinc sulfate is 1:2.

[0162] The mass ratio of copper sulfate to nano-titanium nitride is 1:3.

[0163] The mass fraction of the intermediate product in the boric acid solution is 4%.

[0164] The mass fraction of boric acid in the boric acid solution is 10%.

[0165] The sample test data of the present application are shown in Table 1.

[0166] The sample test data of the present application are shown in Table 1.

[0167] Comparative Example 5

[0168] A production method of an anti-mildew polyethylene fabric, comprising the following technical steps:

[0169] The spinning raw material is dissolved in the spinning solvent to form a spinning solution, then the spinning solution is subjected to flash spinning to form flash fibers, then the flash fibers are laid, and finally the anti-mildew polyethylene fabric is formed through a hot pressing process; wherein the flash spinning temperature is 205 DEG C, and the hot pressing temperature is 110 DEG C.

[0170] The spinning raw material is polyethylene and an antifungal agent, wherein the mass fraction of the antifungal agent in the spinning raw material is 7%.

[0171] The mass fraction of the spinning raw material in the spinning solution is 13%.

[0172] The spinning solvent is dichloromethane, 1,1,1,2-tetrafluoroethane, 1H perfluorohexane, and hydrofluoroether, and the weight ratio of the four is 7:1:1:1.

[0173] A preparation method of a copper-zinc-doped nano-titanium nitride modifier, comprising the following steps:

[0174] The nano-titanium nitride is dispersed in an alkaline solution, and then a mixed solution of copper sulfate and zinc sulfate is added, and the mixture is separated by filtration, and then grinding and secondary calcination processes are performed to obtain an intermediate product; the intermediate product is then added to a boric acid solution, and then filtered and separated, and then subjected to a third calcination to obtain the copper-zinc-doped nano-titanium nitride modifier.

[0175] The mass ratio of copper sulfate to zinc sulfate is 1:2.

[0176] The mass ratio of copper sulfate to nano-titanium nitride is 1:3.

[0177] The mass fraction of the intermediate product in the boric acid solution is 4%.

[0178] The mass fraction of boric acid in the boric acid solution is 10%.

[0179] The sample test data of the present application are shown in Table 1.

[0180] The sample test data of the present application are shown in Table 1.

[0181] Comparative Example 6

[0182] A production method of a mildew-resistant polyethylene fabric, comprising the following technical steps:

[0183] The spinning raw material is dissolved in a spinning solvent to form a spinning solution, and then the spinning solution is subjected to flash spinning to form flash fibers, and then the flash fibers are laid out, and finally a mildew-resistant polyethylene fabric is formed through a hot pressing process; wherein the flash spinning temperature is 205 DEG C, and the hot pressing temperature is 110 DEG C.

[0184] The spinning raw material is polyethylene and a mildew-resistant agent, wherein the mass fraction of the mildew-resistant agent in the spinning raw material is 4%.

[0185] The mass fraction of the spinning raw material in the spinning solution is 13%.

[0186] The spinning solvent is dichloromethane, 1,1,1,2-tetrafluoroethane, 1H perfluorohexane, and hydrofluoroether, and the weight ratio of the four is 7:1:1:1.

[0187] A preparation method of a copper-zinc-doped nano-titanium nitride modifier, comprising the following steps:

[0188] The nano-titanium nitride is dispersed in an alkaline solution, and then a mixed solution of zinc sulfate is added, and the mixture is separated by filtration, and then is ground and subjected to a second calcination process to obtain an intermediate product; the intermediate product is added to a boric acid solution, and then is subjected to filtration separation, and then is subjected to a third calcination to obtain the copper-zinc-doped nano-titanium nitride modifier.

[0189] The mass ratio of zinc sulfate to nano-titanium nitride is 2:3.

[0190] The mass fraction of the intermediate product in the boric acid solution is 4%.

[0191] The mass fraction of boric acid in the boric acid solution is 10%.

[0192] The sample of the present comparative example 6 is subjected to testing, and the testing data are shown in Table 1.

[0193] The sample of the present comparative example 6 is placed in a normal temperature environment, and after one year, the mildew-proof grade of the sample is 3, and the antibacterial effect is 85.5%; it can be seen that the mildew-proof performance is obviously decreased, and the antibacterial effect is obviously decreased.

[0194] Table 1: Testing data of samples

[0195] Δσ c N / mm 2 ]]> ​ Mold resistance rating P kN / m Whiteness Antibacterial rate Example 1 2.27 4.05 1 9.3 88.9％ 98.2％ Example 2 2.71 3.44 1 9.7 86.7％ 98.8％ Example 3 3.45 3.02 0 10.1 85.6％ 99.2％ Example 4 3.82 3.25 0 10.4 83.5％ 99.3％ Example 5 4.02 3.11 0 10.6 82.4％ 99.5％ Comparative Example 1 2.1 3.53 4 7.7 87.5％ 88.5％ Comparative Example 2 2.01 4.32 3 6.2 92.1％ 96.5％ Comparative Example 3 2.13 4.18 3 7.6 90.3％ 97.6％ Comparative Example 4 4.18 3.01 0 10.3 79.6％ 99.6％ Comparative Example 5 4.31 2.88 0 9.9 77.7％ 99.7％ Comparative Example 6 3.35 3.12 2 9.5 84.6％ 95.2％

[0196] The above only describes the preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the concept of the present application, several improvements and refinements can be made, and these improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. A mildew resistant polyethylene fabric, characterized by, The raw material comprises polyethylene and copper-zinc-doped nano titanium nitride modifier, and the ratio of cold shrinkage strength to hot shrinkage strength of the mildew-proof polyethylene fabric is 2:1-6:

1. Δσ = σ c / σ r ; σ c σ is the cold strength; σ r σ is the thermal shrinkage strength; The cold shrink strength of the mildew-proof polyethylene fabric is 2.5-5.5 N / mm 2 ; The mildew-proof grade of the mildew-proof polyethylene fabric is less than 3. The tear strength of the mildew-proof polyethylene fabric is 9-11 kN / m. The mass fraction of the copper-zinc-doped nano titanium nitride modifier in the spinning raw material is 3-5%, wherein the preparation method of the copper-zinc-doped nano titanium nitride modifier comprises the following steps: dispersing nano titanium nitride in an alkaline solution, then adding a mixed solution of copper sulfate and zinc sulfate, filtering and separating to obtain a mixture, and then performing grinding and secondary calcination process to obtain an intermediate product; adding the intermediate product into a boric acid solution, then filtering and separating, and then performing third calcination to obtain the copper-zinc-doped nano titanium nitride modifier; The secondary calcination process comprises the following steps: first calcination at 130-150 DEG C for 30-80 min, then second calcination at a temperature increasing rate of 5 DEG C / min, second calcination at 600-700 DEG C for 2-4 h. The third calcination is performed at a temperature of 450-500 DEG C for 2-3 h.

2. The mildew resistant polyethylene fabric of claim 1, wherein, The ratio of cold shrinkage strength to hot shrinkage strength of the mildew-proof polyethylene fabric is 2:1-3:

1.

3. The mildew resistant polyethylene fabric of claim 1, wherein, The ratio of cold shrinkage strength to hot shrinkage strength of the mildew-proof polyethylene fabric is 3:1-4:

1.

4. The mildew resistant polyethylene fabric of claim 1 wherein, The ratio of cold shrinkage strength to hot shrinkage strength of the mildew-proof polyethylene fabric is 4:1-5:

1.

5. The mildew resistant polyethylene fabric of claim 1 wherein, The ratio of cold shrinkage strength to hot shrinkage strength of the mildew-proof polyethylene fabric is 5:1-6:

1.

6. The mildew resistant polyethylene fabric of claim 1 wherein, The cold shrink strength of the mildew-proof polyethylene fabric is 3-4 N / mm 2 .

7. A mildew resistant polyethylene fabric as claimed in claim 1, wherein, The cold shrink strength of the mildew-proof polyethylene fabric is 4-5 N / mm 2 .

8. A mildew resistant polyethylene fabric as claimed in claim 1, wherein, The mildew-proof grade of the mildew-proof polyethylene fabric is 0.

9. A mildew resistant polyethylene fabric as defined in claim 1, wherein, The mildew-proof grade of the mildew-proof polyethylene fabric is 1.