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CN-122008662-A - Anti-ultraviolet waterproof cloth

CN122008662ACN 122008662 ACN122008662 ACN 122008662ACN-122008662-A

Abstract

The application discloses an ultraviolet-resistant waterproof cloth, which comprises a base cloth and a waterproof film pressed on the base cloth, wherein the base cloth is polyester base cloth, and the waterproof film comprises, by weight, 50-70 parts of high-density polyethylene, 15-30 parts of linear low-density polyethylene, 5-8 parts of manganese ion doped zinc sulfide, 5-10 parts of polydopamine coated nano silicon dioxide, 0.5-2 parts of a coupling agent, 0.2-1 part of a lubricant and 0.1-0.3 part of polydopamine coated black phosphorus. Through a multistage cooperative mechanism of ultraviolet light conversion, surface shielding and physical coverage, the ultraviolet ageing resistance and mechanical stability of the waterproof cloth are comprehensively improved while the excellent waterproof performance is maintained.

Inventors

  • Bi Rulian
  • XU YING
  • YU XIANGCHUN
  • ZOU ZHENG
  • CHANG YAN
  • HONG MENGMENG
  • CAO WEILING
  • Lu kejie
  • GUAN GAOFENG
  • LI AIJUN
  • LI LING
  • Sheng Meili
  • CHEN GUANGXIANG

Assignees

  • 浙江弘达环保科技有限公司

Dates

Publication Date
20260512
Application Date
20260407

Claims (8)

  1. 1. The ultraviolet-resistant waterproof cloth comprises a base cloth and a waterproof film pressed on the base cloth, and is characterized in that the base cloth is polyester base cloth, and the waterproof film comprises, by weight, 50-70 parts of high-density polyethylene, 15-30 parts of linear low-density polyethylene, 5-8 parts of manganese ion doped zinc sulfide, 5-10 parts of polydopamine coated nano silicon dioxide, 0.5-2 parts of a coupling agent, 0.2-1 part of a lubricant and 0.1-0.3 part of polydopamine coated black phosphorus.
  2. 2. The anti-ultraviolet waterproof cloth according to claim 1, wherein the preparation method of the manganese ion doped zinc sulfide comprises the steps of adding 5-6 parts of zinc acetate and 0.1-0.2 part of manganese acetate into 70-90 parts of deionized water, then adding 5-7 parts of oleic acid, stirring for 25-35min at 65-75 ℃ in a water bath, and recording as solution A; Dissolving 5.5-6.5 parts of thiourea in 35-45 parts of deionized water to form a solution B; Dropwise adding the solution B into the solution A under stirring, regulating the pH value to 10-11 by using a NaOH solution after dropwise adding, preserving heat for 7-9h at 125-135 ℃, transferring the reaction product into a centrifuge tube, centrifugally separating for 12-18min at the rotating speed of 9000-11000r/min, discarding supernatant, collecting solid precipitate at the bottom, alternately washing the precipitate by using deionized water and absolute ethyl alcohol respectively, repeating the process for 3 times, drying the washed solid product at 50-60 ℃ for 8-12h, and finally grinding the solid product through a 200-mesh screen to obtain manganese ion doped zinc sulfide powder.
  3. 3. The ultraviolet-resistant waterproof cloth according to claim 1, wherein the preparation method of the polydopamine coated black phosphorus is characterized in that, according to parts by weight, 0.5-1 part of black phosphorus is added into 20-30 parts of anhydrous N, N-dimethylformamide, ice bath is conducted under the protection of argon for 6-9 hours, centrifugation is conducted for 20-30 minutes at 2000-4000r/min, supernatant fluid is collected, centrifugation is conducted for 15-30 minutes at 9000-12000r/min, sediment is collected, the sediment is dispersed in 20-30 parts of mixed solution of anhydrous ethanol and deionized water in a volume ratio of 1:1, the mixed solution is subjected to ultrasonic treatment for 0.5-1 hour, argon is used for deoxidizing for 10 minutes, 0.5-1 part of dopamine hydrochloride is added, naOH solution is added dropwise for adjusting pH to 8-8.5, the mixed solution is stirred and reacted for 12-24 hours at 20-25 ℃, after the reaction is finished, the product is transferred into a centrifuge tube, centrifugation is conducted for 10-20 minutes at a rotating speed of 8000-12000r/min, the supernatant fluid is removed, deionized water and the solid is washed alternately for 3 times with anhydrous ethanol, washed for 40-12000 ℃ and dried, and the solid is subjected to vacuum-coated with the solid is subjected to grinding for 40-200 hours, and then the powder is obtained.
  4. 4. The ultraviolet-resistant waterproof cloth according to claim 3, wherein in the preparation method of the polydopamine coated black phosphorus, argon is introduced to remove oxygen for 10min, 0.3-0.8 part of chitosan is added, stirring is carried out to fully dissolve the polydopamine, then 0.5-1 part of dopamine hydrochloride is added, 0.1mol/LNaOH solution is added dropwise to adjust pH to 8-8.5, and light-shielding stirring reaction is carried out for 12-24h at 20-25 ℃.
  5. 5. The ultraviolet resistant waterproof cloth according to claim 1, wherein the waterproof film further comprises 0.5-2 parts of nano boron nitride in parts by weight.
  6. 6. The ultraviolet resistant waterproof cloth according to claim 1, wherein the preparation method of the polydopamine coated nano silicon dioxide is characterized in that, according to parts by weight, 5-6 parts of nano silicon dioxide and 100-120 parts of deionized water are mixed, ultrasonic dispersion is carried out for 10-30min, then uniform suspension is formed under magnetic stirring, 0.1-0.3 part of tris (hydroxymethyl) aminomethane is added, stirring is carried out until complete dissolution, naOH solution is used for adjusting pH value to 8-8.5, 0.5-1 part of dopamine hydrochloride is added, stirring is carried out for 18-24h at 25-35 ℃, after the reaction is finished, the product is transferred into a centrifuge tube, centrifugation is carried out for 10-20min at 8000-10000r/min, supernatant is discarded, sediment is washed for 3 times alternately by deionized water and absolute ethyl alcohol, the washed solid is placed under 40-50 ℃ for vacuum drying for 12-24h, and then grinding is carried out and 200-mesh screen, thus obtaining polydopamine coated nano silicon dioxide powder.
  7. 7. The anti-ultraviolet waterproof cloth according to claim 1, wherein the lubricant is vinyl bis-stearamide and low-molecular-weight polyethylene wax in a mass ratio of 1:1.
  8. 8. The ultraviolet resistant waterproof cloth according to claim 1, wherein the coupling agent is a borate coupling agent.

Description

Anti-ultraviolet waterproof cloth Technical Field The application relates to the field of waterproof cloth, in particular to ultraviolet-resistant waterproof cloth. Background With the rapid development of the fields of outdoor industry, industrial storage, agricultural coverage, building construction and outdoor leisure articles, the application scene of the functional textile fabric is continuously expanded, and higher requirements are put forward on the comprehensive protective performance of the fabric. Waterproof cloth is used as a functional protective fabric, is widely applied to various fields such as outdoor tents, rainproof tarpaulins, goods covers, agricultural heat preservation rainproof, outdoor sunshades, special protective clothing and the like, has the core function requirements of being gradually upgraded from single waterproof, ultraviolet resistant, ageing resistant, high-strength and long-life synergistic and compatible, and the fabric with basic waterproof performance simply cannot meet the complex use environments of outdoor long-term insolation and wind and rain erosion. Ultraviolet rays (with the wavelength of 280-400 nm) are used as main aging inducement in outdoor environment, have extremely strong photochemical activity, can directly damage the macromolecule chains of the conventional waterproof cloth base materials after long-term irradiation, cause the problems of embrittlement, cracking, fading, waterproof coating falling off and the like of the fabric, shorten the service life of the waterproof cloth and are to be improved. Disclosure of Invention In order to improve the anti-ultraviolet effect of the waterproof cloth, the application provides the anti-ultraviolet waterproof cloth. The application provides an ultraviolet-resistant waterproof cloth, which adopts the following technical scheme: The ultraviolet-resistant waterproof cloth comprises a base cloth and a waterproof film pressed on the base cloth, wherein the base cloth is polyester base cloth, and the waterproof film comprises, by weight, 50-70 parts of high-density polyethylene, 15-30 parts of linear low-density polyethylene, 5-8 parts of manganese ion doped zinc sulfide, 5-10 parts of polydopamine coated nano silicon dioxide, 0.5-2 parts of a coupling agent, 0.2-1 part of a lubricant and 0.1-0.3 part of polydopamine coated black phosphorus. By adopting the technical scheme, the manganese ion doped zinc sulfide can absorb ultraviolet light in the wave band of 280-400nm, convert the ultraviolet light into harmless fluorescent emission in the visible light range, weaken the ultraviolet light intensity acting on a polyethylene matrix and polyester base cloth, and delay the breakage and degradation of a high polymer chain; The polydopamine coated nano silicon dioxide improves the tensile strength and tearing strength of the waterproof film through the rigidity of the nano particles, and has excellent adhesion property, the polydopamine coating on the surface layer is utilized to enhance the binding force between the inorganic filler and the organic matrix, and the polydopamine coated nano silicon dioxide has excellent ultraviolet shielding property, so that a secondary ultraviolet blocking barrier is constructed on the surface layer of the material, and the free radical chain reaction caused by ultraviolet is inhibited; the lamellar structure of black phosphorus forms the physical covering barrier at the interface, the interface gap that ultraviolet rays may permeate is blocked physically, avoid ultraviolet rays to ageing and corroding to polyester base cloth from the microscopic defect department, and carry out the surface cladding to it through polydopamine, polydopamine coating is three-dimensional crosslinked network structure, moderate pore structure has, while restraining the fast oxidation of black phosphorus body, allow the moderate infiltration of trace steam in order to promote the controlled oxidation of black phosphorus surface to produce phosphoric acid group, these groups can react with terminal hydroxyl/carboxyl of polyester base cloth, form stable hydrogen bond or esterification bond, thereby form interface chemical anchoring structure between black phosphorus and polyester base cloth, interlayer cohesion and peel strength have been promoted. Through a multistage cooperative mechanism of ultraviolet light conversion, surface shielding and physical coverage, the ultraviolet ageing resistance and mechanical stability of the waterproof cloth are comprehensively improved while the excellent waterproof performance is maintained. Preferably, the preparation method of the manganese ion doped zinc sulfide comprises the steps of adding 5-6 parts of zinc acetate and 0.1-0.2 part of manganese acetate into 70-90 parts of deionized water, then adding 5-7 parts of oleic acid, stirring for 25-35min at 65-75 ℃ in a water bath, and recording as a solution A; Dissolving 5.5-6.5 parts of thiourea in 35-45 parts of deionized