CN117779233A - Ultraviolet-resistant insect-proof net and preparation process thereof - Google Patents
Ultraviolet-resistant insect-proof net and preparation process thereof Download PDFInfo
- Publication number
- CN117779233A CN117779233A CN202311807941.1A CN202311807941A CN117779233A CN 117779233 A CN117779233 A CN 117779233A CN 202311807941 A CN202311807941 A CN 202311807941A CN 117779233 A CN117779233 A CN 117779233A
- Authority
- CN
- China
- Prior art keywords
- insect
- ultraviolet
- net
- proof net
- resistant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002360 preparation method Methods 0.000 title abstract description 42
- 229920000728 polyester Polymers 0.000 claims abstract description 40
- 239000002250 absorbent Substances 0.000 claims abstract description 27
- 230000002745 absorbent Effects 0.000 claims abstract description 27
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims abstract description 24
- 241000411851 herbal medicine Species 0.000 claims abstract description 17
- 239000004014 plasticizer Substances 0.000 claims abstract description 13
- -1 hydroxy modified 2- (2-hydroxy-3-tertiary butyl-5-methylphenyl) -5-chlorobenzotriazole Chemical class 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 60
- 241000238631 Hexapoda Species 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 10
- 238000009941 weaving Methods 0.000 claims description 9
- 238000009958 sewing Methods 0.000 claims description 8
- 238000005056 compaction Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000009998 heat setting Methods 0.000 claims description 7
- 230000014759 maintenance of location Effects 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 claims description 5
- 239000000077 insect repellent Substances 0.000 claims description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 5
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 5
- 244000178870 Lavandula angustifolia Species 0.000 claims description 4
- 235000010663 Lavandula angustifolia Nutrition 0.000 claims description 4
- 239000001102 lavandula vera Substances 0.000 claims description 4
- 235000018219 lavender Nutrition 0.000 claims description 4
- 244000035851 Chrysanthemum leucanthemum Species 0.000 claims description 2
- 235000008495 Chrysanthemum leucanthemum Nutrition 0.000 claims description 2
- 244000166675 Cymbopogon nardus Species 0.000 claims description 2
- 235000018791 Cymbopogon nardus Nutrition 0.000 claims description 2
- 244000018716 Impatiens biflora Species 0.000 claims description 2
- 235000015912 Impatiens biflora Nutrition 0.000 claims description 2
- 244000246386 Mentha pulegium Species 0.000 claims description 2
- 235000016257 Mentha pulegium Nutrition 0.000 claims description 2
- 235000004357 Mentha x piperita Nutrition 0.000 claims description 2
- 244000178231 Rosmarinus officinalis Species 0.000 claims description 2
- 229920003054 adipate polyester Polymers 0.000 claims description 2
- MEBJLVMIIRFIJS-UHFFFAOYSA-N hexanedioic acid;propane-1,2-diol Chemical compound CC(O)CO.OC(=O)CCCCC(O)=O MEBJLVMIIRFIJS-UHFFFAOYSA-N 0.000 claims description 2
- 235000001050 hortel pimenta Nutrition 0.000 claims description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- JNXDCMUUZNIWPQ-UHFFFAOYSA-N trioctyl benzene-1,2,4-tricarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C(C(=O)OCCCCCCCC)=C1 JNXDCMUUZNIWPQ-UHFFFAOYSA-N 0.000 claims description 2
- 235000008216 herbs Nutrition 0.000 claims 2
- 230000032683 aging Effects 0.000 abstract description 14
- 238000009423 ventilation Methods 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- 239000011229 interlayer Substances 0.000 abstract description 2
- 238000005286 illumination Methods 0.000 abstract 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 28
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 21
- 238000000034 method Methods 0.000 description 16
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 14
- OCWYEMOEOGEQAN-UHFFFAOYSA-N bumetrizole Chemical compound CC(C)(C)C1=CC(C)=CC(N2N=C3C=C(Cl)C=CC3=N2)=C1O OCWYEMOEOGEQAN-UHFFFAOYSA-N 0.000 description 12
- 238000003756 stirring Methods 0.000 description 12
- 239000000243 solution Substances 0.000 description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 10
- 239000006087 Silane Coupling Agent Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 230000001105 regulatory effect Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 238000002834 transmittance Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000011259 mixed solution Substances 0.000 description 5
- 238000010992 reflux Methods 0.000 description 5
- 230000007774 longterm Effects 0.000 description 4
- 238000003878 thermal aging Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000012295 chemical reaction liquid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 241000607479 Yersinia pestis Species 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- ZBMRKNMTMPPMMK-UHFFFAOYSA-N 2-amino-4-[hydroxy(methyl)phosphoryl]butanoic acid;azane Chemical compound [NH4+].CP(O)(=O)CCC(N)C([O-])=O ZBMRKNMTMPPMMK-UHFFFAOYSA-N 0.000 description 1
- 241001124076 Aphididae Species 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 241000255925 Diptera Species 0.000 description 1
- 241000255969 Pieris brassicae Species 0.000 description 1
- 241000500437 Plutella xylostella Species 0.000 description 1
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- MOCOXAJEZKHXSF-IHMBCTQLSA-M sodium;(2s,4as,6ar,6as,6br,8ar,10s,12as,14br)-10-hydroxy-2,4a,6a,6b,9,9,12a-heptamethyl-13-oxo-3,4,5,6,6a,7,8,8a,10,11,12,14b-dodecahydro-1h-picene-2-carboxylate Chemical compound [Na+].C([C@H]1C2=CC(=O)[C@H]34)[C@@](C)(C([O-])=O)CC[C@]1(C)CC[C@@]2(C)[C@]4(C)CC[C@@H]1[C@]3(C)CC[C@H](O)C1(C)C MOCOXAJEZKHXSF-IHMBCTQLSA-M 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Catching Or Destruction (AREA)
Abstract
The invention relates to the field of insect-proof nets, in particular to an ultraviolet-resistant insect-proof net and a preparation process thereof, wherein the ultraviolet-resistant insect-proof net comprises the following raw materials in parts by mass: 80 to 95 parts of polyester, 10 to 15 parts of plasticizer and 0.2 to 0.8 part of insect-preventing herbal medicine; the ultraviolet-resistant insect-proof net also comprises an ultraviolet absorber; the ultraviolet absorbent is hydroxy modified 2- (2-hydroxy-3-tertiary butyl-5-methylphenyl) -5-chlorobenzotriazole. The ultraviolet-resistant insect-proof net disclosed by the invention can be well applied to a greenhouse window frame, is light and thin, is convenient for opening and closing the window, has high breaking strength, can have larger interlayer distance during use, enhances ventilation performance, and is good in heat dissipation performance, capable of effectively preventing the ultraviolet-resistant insect-proof net from aging after being exposed to illumination for a long time, good in intersolubility of each component and long in service life.
Description
Technical Field
The invention relates to the technical field of insect-proof nets, in particular to an ultraviolet-resistant insect-proof net and a preparation process thereof.
Background
The insect-proof net is a structure for preventing insects from entering the room, and can be installed on the outside of a door or window of a building, and inside a door frame or window frame constituting the door or window. In the greenhouse, the novel agricultural greenhouse not only can help crops resist attack of diseases and insect pests, but also can adjust climate in the greenhouse, and improves yield and quality of the crops. The insect-proof net can prevent the invasion of various insect pests such as cabbage caterpillar, plutella xylostella, aphid and the like. In addition, the insect-proof net can prevent part of rainwater from falling into the greenhouse, reduce field humidity and disease occurrence, reduce the evaporation amount of water in the greenhouse in sunny days, and has a certain shading effect.
The number of layers of the existing accordion insect-proof net is up to more than 20, and the thickness of the net is more than 50% thicker than that of the net sheets in the length and width directions due to the sewing connection of the net belt overlapping process at two corners of the window frame, so that the window closing of the greenhouse is not sealed, heat in the greenhouse continuously overflows, meanwhile, the temperature in the greenhouse is continuously reduced by outdoor cold air through gaps inwards, the energy consumption of the greenhouse is increased, and the benefits of growers are greatly reduced. Meanwhile, the common insect-proof net has weak ultraviolet blocking capability, and a large amount of ultraviolet rays penetrate through the insect-proof net to act on the plant surface during the daytime, so that the ageing of plants is accelerated, and the plant growth is influenced.
For example, the CN101328685B environment-friendly insect-proof net is prepared from PVC, a plasticizer, a heat stabilizer, an antioxidant, an anti-UV agent, a lubricant and perfume, and has good environment-friendly performance, but the insect-proof net system prepared by the method is mixed with fillers, so that the dispersion of the system is unstable easily caused. In addition, as in CN116377644A, the environment-friendly insect-proof net is prepared from ultra-high molecular weight polyethylene, functional copolymer, antioxidant, zinc stearate, slipping agent, coupling agent, inorganic filler and sodium glycyrrhetate, and has the advantages of good environment-friendly property, good heat aging resistance, excellent performance stability, mechanical property and insect repellent performance, but does not solve the problem that ultraviolet rays have influence on vegetation growth.
Therefore, development of an insect-proof net which can resist ultraviolet rays, has light thickness, is convenient for opening and closing a window, has good ventilation, high breaking strength and good thermal aging resistance, and can stably exist among all the components is urgent.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an ultraviolet-resistant insect-proof net and a preparation method thereof, wherein the insect-proof net has good ultraviolet absorption effect, high breaking strength, heat aging resistance and stability.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the invention provides an ultraviolet-resistant insect-proof net, which comprises the following raw materials in parts by mass: 80 to 95 parts of polyester, 10 to 15 parts of plasticizer and 0.2 to 0.8 part of insect-preventing herbal medicine; the ultraviolet-resistant insect-proof net also comprises an ultraviolet absorber; the ultraviolet absorbent is hydroxy modified 2- (2-hydroxy-3-tertiary butyl-5-methylphenyl) -5-chlorobenzotriazole.
In some embodiments, the plasticizer is one or more of tricresyl phosphate, trioctyl trimellitate, and propylene glycol adipate polyester.
Preferably, the plasticizer is tricresyl phosphate.
In some embodiments, the polyester is one or more of polyethylene terephthalate slices, polybutylene terephthalate slices, and polycarbonate slices.
Preferably, the polyester is polyethylene terephthalate chips.
In some embodiments, the insect-resistant herbal medicine is one or more of lavender, wild chrysanthemum, impatiens balsamina, peppermint, citronella, rosemary, and mozzie buster.
Preferably, the insect-repellent herb is lavender.
In some embodiments, the mass ratio of the polyester to the ultraviolet absorber is 1 (0.05 to 0.2).
Preferably, the mass ratio of the polyester to the ultraviolet absorber is 1 (0.125).
The applicant found that the addition amount of the ultraviolet absorbent can affect the strength of the insect-proof net, because the ultraviolet absorbent contains groups capable of reacting with polyester, the intersolubility of the ultraviolet absorbent in the polyester is increased, and excessive ultraviolet absorbent can lead to the reduction of the mechanical property of the insect-proof net, and in addition, excessive ultraviolet absorbent can generate more heat when absorbing ultraviolet rays, so that other components in the insect-proof net are easily decomposed by heating, and the breaking strength of the insect-proof net is reduced.
In some embodiments, the method of preparing the ultraviolet absorber comprises the steps of: and (3) placing ethylene glycol and sodium hydroxide solid in a reaction kettle provided with a water separator, heating to 100-120 ℃, stirring until no water drops in the water separator, cooling the reaction liquid to 25-35 ℃, adding 2- (2-hydroxy-3-tert-butyl-5-methylphenyl) -5-chlorobenzotriazole, heating to 170-190 ℃, stirring for 1-2 hours, and regulating the pH value to 6-8 to obtain the ultraviolet absorbent.
Preferably, the preparation method of the ultraviolet absorber comprises the following steps: and (3) placing ethylene glycol and sodium hydroxide solid in a reaction kettle provided with a water separator, heating to 110 ℃, stirring until no water drops in the water separator, cooling the solution reaction liquid to 30 ℃, adding 2- (2-hydroxy-3-tertiary butyl-5-methylphenyl) -5-chlorobenzotriazole, heating to 180 ℃, stirring for 1.5 hours, and regulating pH to 7 by using 2mol/L hydrochloric acid to obtain the ultraviolet absorbent.
The 2- (2-hydroxy-3-tertiary butyl-5-methylphenyl) -5-chlorobenzotriazole is usually adsorbed on the surface of polyester in the using process in an adsorption mode, because the 2- (2-hydroxy-3-tertiary butyl-5-methylphenyl) -5-chlorobenzotriazole does not have active groups which react with the polyester and has poor compatibility with the polyester, the method can effectively prevent the invasion of ultraviolet light, but the ultraviolet absorbent is easy to crack and drop after long-term use, so that the performance of the insect-proof net is reduced.
In some embodiments, the molar ratio of ethylene glycol to sodium hydroxide is 1 (0.8-1).
Preferably, the molar ratio of the ethylene glycol to the sodium hydroxide is 1:0.9.
The applicant can completely react the sodium hydroxide in the reaction system by regulating the proportion of the glycol to the sodium hydroxide, and can take the rest of the glycol as a solvent for the next step.
In some embodiments, the molar ratio of ethylene glycol to 2- (2-hydroxy-3-tert-butyl-5-methylphenyl) -5-chlorobenzotriazole is 1 (1-1.2).
Preferably, the molar ratio of the ethylene glycol to the 2- (2-hydroxy-3-tert-butyl-5-methylphenyl) -5-chlorobenzotriazole is 1:1.1.
The method ensures that the reaction is more complete and the yield is improved by regulating and controlling the molar ratio of the ethylene glycol to the 2- (2-hydroxy-3-tertiary butyl-5-methylphenyl) -5-chlorobenzotriazole.
In some embodiments, the raw material of the ultraviolet resistant insect screen further comprises modified nano titanium dioxide.
In some embodiments, the method of preparing the modified nano-titania comprises the steps of: and (3) placing the nano titanium dioxide in a mixed solution of hydrochloric acid solution and ethanol, stirring for a period of time under the irradiation of an ultraviolet lamp, adding a silane coupling agent, removing the ultraviolet lamp, heating to a reflux state, stirring for a period of time, and naturally cooling to obtain the modified nano titanium dioxide.
Preferably, the preparation method of the modified nano titanium dioxide comprises the following steps: and (3) placing 25-50 g of nano titanium dioxide into 30mL of a mixed solution of 1-2 mol/L hydrochloric acid solution and 60mL of ethanol, stirring for 1-2 hours under the irradiation of an ultraviolet lamp, adding a silane coupling agent, removing the ultraviolet lamp, heating to a reflux state, stirring for 2-3 hours, and naturally cooling to 25-35 ℃ to obtain the modified nano titanium dioxide.
The applicant finds that the nano titanium dioxide has higher ultraviolet absorption and reflection capability and good heat conduction capability, but the nano titanium dioxide cannot be effectively dispersed in polyester, and the application enhances the intersolubility and dispersibility of the nano titanium dioxide and the polyester by modifying the nano titanium dioxide, and simultaneously enhances the heat conduction capability of the insect-proof net, so that the heat released when the ultraviolet absorber absorbs ultraviolet can be effectively transferred to each grid, the heat dissipation capability is increased, and the aging and decomposition phenomena of the ultraviolet-resistant insect-proof net at high temperature for a long time are prevented.
In addition, the applicant found that the modified nano titanium dioxide prepared conventionally can effectively prevent local temperature rise and aging of the insect-proof net in a short period of time, but has poor long-term effect, and the reason is that the active free radicals in the modified nano titanium dioxide cannot be completely excited in the preparation process, so that the residual active free radicals of the nano titanium dioxide are excited and oxidize the insect-proof net to age under the irradiation of sunlight. The preparation process of the modified nano titanium dioxide is improved, and the nano titanium dioxide is acidified under irradiation of an ultraviolet lamp, so that active free radicals of the nano titanium dioxide can be modified to the maximum extent, and oxidation phenomenon of an insect-proof net during long-term use is prevented.
In some embodiments, the mass ratio of the silane coupling agent to the nano-titania is 1 (3-7).
Preferably, the mass ratio of the silane coupling agent to the nano titanium dioxide is 1:5.
In some embodiments, the silane coupling agent is one or more of the types KH550, KH560, KH570, KH602, and KH 792.
In some embodiments, the mass ratio of the polyester to the modified nano-titania is 1 (0.01-0.1).
Preferably, the mass ratio of the polyester to the modified nano titanium dioxide is 1:0.05.
The applicant can prevent the toughness of the system from being reduced and the light transmittance from being poor due to excessive modified nano titanium dioxide by regulating the mass ratio of the polyester to the modified nano titanium dioxide.
The applicant can make the insect-proof net emit the insect-proof smell by adding insect-proof herbal medicine into the insect-proof net, so that the mosquitoes are far away from the greenhouse, and vegetation is protected.
The invention also provides a preparation process of the ultraviolet-resistant insect-proof net, which comprises the following steps:
s1, uniformly mixing polyester, insect-proof herbal medicines, modified nano titanium dioxide and an ultraviolet absorbent according to mass;
s2, drawing the mixture uniformly mixed in the step S1 into 10-30 filaments of high-transparency monofilaments through an extruder;
s3, weaving the high-transparency monofilaments into a woven belt by a belt loom, and performing heat setting to form a low-shrinkage net sheet;
s4, hot cutting the mesh according to a window frame, vertically, tightly and flatly abutting the transverse mesh along the edge locking position of the longitudinal mesh, and placing the mesh into a presser foot of a computer pattern machine for retention and compaction;
s5, sewing the upper and lower adjacent meshes alternately with inner lockstitching and outer lockstitching to obtain the ultraviolet-resistant insect-proof net.
In the past braiding mode, adopt the stack type, splice two insect-proof net transversely and longitudinally, lead to the stack thickness to be too big, close the window and unseal, make the indoor heat of the greenhouse overflow constantly, this application is through improving the splicing process, make the net atress more even, the thickness of the whole net is halved, has reduced the consumption of the material at the same time; in addition, as the corners are not overlapped, the weight is consistent, the distance between layers is more uniform during window opening, thereby being more attractive and greatly improving the ventilation performance.
In some embodiments, the insect-proof net is arranged at equal intervals along the longitudinal stretching direction by a plurality of double filaments attached by two monofilaments.
The weaving method can maximize the unfolding angle in the longitudinal stretching process of the insect-proof net, and the monofilaments are not easy to break.
In some embodiments, the pore diameter of the braid in the step S3 is 0.2-1 mm, and the width of the braid is 50-120 mm.
Preferably, in the step S3, the aperture of the webbing is 0.6mm, and the width of the webbing is 85mm.
In some embodiments, the width of the stitched area after stitching in step S5 is 0.5mm to 2mm.
Preferably, the width of the stitched area after stitching in step S5 is 1.25mm.
Compared with the prior art, the invention has the following beneficial effects:
(1) The ultraviolet absorbent prepared by modifying the 2- (2-hydroxy-3-tertiary butyl-5-methylphenyl) -5-chlorobenzotriazole can be uniformly dispersed in a polyester system in the preparation process of the ultraviolet-resistant insect-proof net, so that the problem that the ultraviolet absorbent in the conventional insect-proof net is easy to fall off due to the fact that the ultraviolet absorbent is only adsorbed on the surface of the polyester or migrates to the surface of the polyester is effectively solved, the stability of the ultraviolet absorbent in the actual use of the insect-proof net is improved, and the cost is saved.
(2) According to the invention, the heat aging resistance of the insect-proof net can be improved by adding the modified nano titanium dioxide, and the heat released by the ultraviolet absorbent when absorbing ultraviolet light can be effectively dissipated by the insect-proof net, so that the decomposition aging generated in the overheat inside of the insect-proof net is prevented.
(3) According to the method for modifying the nano titanium dioxide, on one hand, the ratio of polyester to the modified nano titanium dioxide to the hydroxy modified 2- (2-hydroxy-3-tert-butyl-5-methylphenyl) -5-chlorobenzotriazole is regulated, so that the breaking strength of the insect-proof net is improved, and the insect-proof and ultraviolet-proof effects cannot be effectively achieved due to the fact that the insect-proof net is prevented from breaking in the stretching process; on the other hand, the ultraviolet lamp is adopted to irradiate to assist in the preparation of the modified nano titanium dioxide, so that active free radicals in the nano titanium dioxide can be excited to participate in modification to the maximum extent, and the aging phenomenon caused by the oxidation of the active free radicals on the insect-proof net under the long-term sunlight irradiation of the insect-proof net is prevented.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the following examples and comparative examples, the polyester was polyethylene terephthalate chips, the plasticizer was tricresyl phosphate, the insect-repellent herb was lavender, and the ultraviolet absorber was hydroxy-modified 2- (2-hydroxy-3-t-butyl-5-methylphenyl) -5-chlorobenzotriazole.
Polyethylene terephthalate chips were purchased from Hubei Xinyu macro biological medicine technologies Co., ltd, tricresyl phosphate was purchased from Jinan Yuyi chemical Co., ltd, and 2- (2-hydroxy-3-tert-butyl-5-methylphenyl) -5-chlorobenzotriazole was purchased from Hubei Jisheng technology Co., ltd.
Preparation example 1
The preparation method of the modified nano titanium dioxide comprises the following steps: and (3) placing 38g of nano titanium dioxide into 30mL of a mixed solution of 1.5mol/L hydrochloric acid solution and 60mL of ethanol, stirring for 40 minutes under the irradiation of an ultraviolet lamp, adding 9.5g of KH550 silane coupling agent, removing the ultraviolet lamp, heating to a reflux state, stirring for 2.5 hours, and naturally cooling to 30 ℃ to obtain the modified nano titanium dioxide.
Preparation example 2
The preparation method of the modified nano titanium dioxide comprises the following steps: 38g of nano titanium dioxide is placed in 30mL of a mixed solution of 1.5mol/L hydrochloric acid solution and 60mL of ethanol, 9.5g of KH550 silane coupling agent is added, the temperature is raised to a reflux state, and the mixture is stirred for 2.5 hours and then naturally cooled to 30 ℃ to prepare the modified nano titanium dioxide.
Preparation example 3
The preparation method of the modified nano titanium dioxide comprises the following steps: putting 38g of nano titanium dioxide into 30mL of a mixed solution of 1.5mol/L hydrochloric acid solution and 60mL of ethanol, stirring for 40 minutes under the irradiation of an ultraviolet lamp, adding 16g of KH550 silane coupling agent, removing the ultraviolet lamp, heating to a reflux state, stirring for 2.5 hours, and naturally cooling to 30 ℃ to obtain the modified nano titanium dioxide.
Preparation example 4
The preparation method of the ultraviolet absorbent comprises the following steps: 100 parts by mass of ethylene glycol and 58 parts by mass of sodium hydroxide solid are placed in a reaction kettle provided with a water separator, the temperature is raised to 110 ℃, the mixture is stirred until the water separator is dripped without water, the temperature of a solution reaction liquid is reduced to 30 ℃, 560 parts by mass of 2- (2-hydroxy-3-tertiary butyl-5-methylphenyl) -5-chlorobenzotriazole is added, the temperature is raised to 180 ℃, the mixture is stirred for 1.5 hours, and the pH value is regulated to 7 by 2mol/L hydrochloric acid, so that the ultraviolet absorbent is obtained.
Example 1
An ultraviolet-resistant insect-proof net comprises the following raw materials in parts by mass: 88 parts of polyester, 12 parts of plasticizer, 0.6 part of insect-proof herbal medicine, 11 parts of ultraviolet absorber and 4.4 parts of modified nano titanium dioxide.
Modified nano titanium dioxide was prepared from preparation example 1.
The ultraviolet absorber was prepared in preparation example 4.
The preparation process of the ultraviolet-resistant insect-proof net of the embodiment comprises the following steps:
s1, uniformly mixing polyester, insect-proof herbal medicines, modified nano titanium dioxide and an ultraviolet absorbent according to mass;
s2, drawing the mixture uniformly mixed in the step S1 into 20-filament high-transparency monofilaments through an extruder;
s3, weaving the high-transparency monofilaments into a woven belt with the aperture of 0.6mm and the width of 85mm in a belt loom, and performing heat setting to form a low-shrinkage mesh;
s4, hot cutting the mesh according to a window frame, vertically, tightly and flatly abutting the transverse mesh along the edge locking position of the longitudinal mesh, and placing the mesh into a presser foot of a computer pattern machine for retention and compaction;
s5, sewing the upper and lower adjacent meshes alternately with inner lockstitching and outer lockstitching to obtain the ultraviolet-resistant insect-proof net.
Example 2
An ultraviolet-resistant insect-proof net comprises the following raw materials in parts by mass: 80 parts of polyester, 10 parts of plasticizer, 0.2 part of insect-proof herbal medicine, 4.1 parts of ultraviolet absorber and 0.8 part of modified nano titanium dioxide.
Modified nano titanium dioxide was prepared from preparation example 1.
The ultraviolet absorber was prepared in preparation example 4.
The preparation process of the ultraviolet-resistant insect-proof net of the embodiment comprises the following steps:
s1, uniformly mixing polyester, insect-proof herbal medicines, modified nano titanium dioxide and an ultraviolet absorbent according to mass;
s2, drawing the mixture uniformly mixed in the step S1 into 30-filament high-transparency monofilaments through an extruder;
s3, weaving the high-transparency monofilaments into a woven belt with the aperture of 1mm and the width of 120mm in a belt loom, and performing heat setting to form a low-shrinkage net sheet;
s4, hot cutting the mesh according to a window frame, vertically, tightly and flatly abutting the transverse mesh along the edge locking position of the longitudinal mesh, and placing the mesh into a presser foot of a computer pattern machine for retention and compaction;
s5, sewing the upper and lower adjacent meshes alternately with inner lockstitching and outer lockstitching to obtain the ultraviolet-resistant insect-proof net.
Example 3
An ultraviolet-resistant insect-proof net comprises the following raw materials in parts by mass: 82 parts of polyester, 11 parts of plasticizer, 0.4 part of insect-proof herbal medicine, 8.2 parts of ultraviolet absorber and 2.5 parts of modified nano titanium dioxide.
Modified nano titanium dioxide was prepared from preparation example 1.
The ultraviolet absorber was prepared in preparation example 4.
The preparation process of the ultraviolet-resistant insect-proof net of the embodiment comprises the following steps:
s1, uniformly mixing polyester, insect-proof herbal medicines, modified nano titanium dioxide and an ultraviolet absorbent according to mass;
s2, drawing the mixture uniformly mixed in the step S1 into 10-filament high-transparency monofilaments through an extruder;
s3, weaving the high-transparency monofilaments into a braid with the aperture of 0.2mm and the width of 50mm in a ribbon loom, and then performing heat setting to form a low-shrinkage mesh;
s4, hot cutting the mesh according to a window frame, vertically, tightly and flatly abutting the transverse mesh along the edge locking position of the longitudinal mesh, and placing the mesh into a presser foot of a computer pattern machine for retention and compaction;
s5, sewing the upper and lower adjacent meshes alternately with inner lockstitching and outer lockstitching to obtain the ultraviolet-resistant insect-proof net.
Example 4
An ultraviolet-resistant insect-proof net comprises the following raw materials in parts by mass: 93 parts of polyester, 14 parts of plasticizer, 0.7 part of insect-proof herbal medicine, 16.7 parts of ultraviolet absorber and 7.4 parts of modified nano titanium dioxide.
Modified nano titanium dioxide was prepared from preparation example 1.
The ultraviolet absorber was prepared in preparation example 4.
The preparation process of the ultraviolet-resistant insect-proof net of the embodiment comprises the following steps:
s1, uniformly mixing polyester, insect-proof herbal medicines, modified nano titanium dioxide and an ultraviolet absorbent according to mass;
s2, drawing the mixture uniformly mixed in the step S1 into 20-filament high-transparency monofilaments through an extruder;
s3, weaving the high-transparency monofilaments into a woven belt with the aperture of 0.6mm and the width of 85mm in a belt loom, and performing heat setting to form a low-shrinkage mesh;
s4, hot cutting the mesh according to a window frame, vertically, tightly and flatly abutting the transverse mesh along the edge locking position of the longitudinal mesh, and placing the mesh into a presser foot of a computer pattern machine for retention and compaction;
s5, sewing the upper and lower adjacent meshes alternately with inner lockstitching and outer lockstitching to obtain the ultraviolet-resistant insect-proof net.
Example 5
An ultraviolet-resistant insect-proof net comprises the following raw materials in parts by mass: 95 parts of polyester, 15 parts of plasticizer, 0.8 part of insect-proof herbal medicine, 19 parts of ultraviolet absorber and 9.5 parts of modified nano titanium dioxide.
Modified nano titanium dioxide was prepared from preparation example 1.
The ultraviolet absorber was prepared in preparation example 4.
The preparation process of the ultraviolet-resistant insect-proof net of the embodiment comprises the following steps:
s1, uniformly mixing polyester, insect-proof herbal medicines, modified nano titanium dioxide and an ultraviolet absorbent according to mass;
s2, drawing the mixture uniformly mixed in the step S1 into 20-filament high-transparency monofilaments through an extruder;
s3, weaving the high-transparency monofilaments into a woven belt with the aperture of 0.6mm and the width of 85mm in a belt loom, and performing heat setting to form a low-shrinkage mesh;
s4, hot cutting the mesh according to a window frame, vertically, tightly and flatly abutting the transverse mesh along the edge locking position of the longitudinal mesh, and placing the mesh into a presser foot of a computer pattern machine for retention and compaction;
s5, sewing the upper and lower adjacent meshes alternately with inner lockstitching and outer lockstitching to obtain the ultraviolet-resistant insect-proof net.
Example 6
The embodiment provides a preparation process of an ultraviolet-resistant insect-proof net, and the specific embodiment is the same as the embodiment 1, except that the ultraviolet absorber is 35 parts by mass.
Example 7
The embodiment provides a preparation process of an ultraviolet-resistant insect-proof net, and the specific implementation mode is the same as the embodiment 1, wherein the modified nano titanium dioxide is 14 parts by mass.
Example 8
The embodiment provides a preparation process of an ultraviolet-resistant insect-proof net, and the specific implementation mode is the same as the embodiment 1, wherein modified nano titanium dioxide is not added into the ultraviolet-resistant insect-proof net component.
Example 9
The present example provides a process for preparing an anti-uv insect-resistant net, and the specific embodiment is the same as example 1, except that the modified nano titanium dioxide is prepared in preparation example 2.
Example 10
The present example provides a process for preparing an anti-uv insect-resistant net, and the specific embodiment is the same as example 1, except that the modified nano titanium dioxide is prepared in preparation example 3.
Example 11
The comparative example provides a process for preparing an anti-ultraviolet insect-proof net, and the specific implementation mode is the same as that of example 1, wherein step S4 is to sew and connect the net sheets at the corner of the window frame according to an overlapping process.
Comparative example 1
The comparative example provides a preparation process of an ultraviolet-resistant insect-proof net, and the specific implementation mode is the same as that of example 1, except that 2- (2-hydroxy-3-tertiary butyl-5-methylphenyl) -5-chlorobenzotriazole with equal mass is used for replacing hydroxy modified 2- (2-hydroxy-3-tertiary butyl-5-methylphenyl) -5-chlorobenzotriazole.
Performance test:
the ultraviolet-resistant insect-resistant nets prepared in each example and comparative example were subjected to performance test, breaking strength was tested according to GB/T3932.1-2013 "textile-fabric tensile Property" standard, thermal aging resistance was tested according to HG/T2724.6-1995 "rubber filament Experimental method-thermal aging test" standard, UV transmittance was tested according to GBT 18830-2002 "evaluation of textile-ultraviolet resistance" standard, and test results are shown in Table 1.
TABLE 1
As can be seen from Table 1, the UV-resistant insect-resistant net prepared in examples 1 to 5 has high breaking strength, good thermal aging resistance, thin net sheet and low UV transmittance. In example 6, the proportion of polyester and ultraviolet absorbent is changed, so that the release heat of the ultraviolet-resistant insect-proof net is increased in the use process, the breaking strength is reduced, the heat aging resistance is slightly reduced, and the UV transmittance is reduced; example 7 the breaking strength of the insect net was reduced by changing the ratio of polyester to modified nano titanium dioxide; in the embodiment 8, as the modified nano titanium dioxide is not used, the local temperature of the net wire is obviously increased when the ultraviolet-resistant insect-proof net is used, and the heat cannot be effectively dispersed, so that the ultraviolet-resistant insect-proof net has high breaking strength and reduced heat aging resistance; example 9 since the modified nano titanium dioxide prepared in preparation example 3 was used, the internal active radical was excited to oxidize the insect-proof net under the irradiation of high intensity ultraviolet light for a long period of time, resulting in the aging of the insect-proof net; in the embodiment 10, the ratio of the nano titanium dioxide to the silane coupling agent is changed, so that the silane coupling agent is excessive, hydrophilic groups in the system are increased, the phenomena of moisture absorption and precipitation occur when the insect-proof net is used for a long time, especially when air is wet, and the breaking strength is reduced; example 11 the overlapping thickness of the mesh sheet was increased by 5 times due to the change of the weaving process of the anti-uv insect net, affecting the window tightness of the anti-uv insect net connection. In comparative example 1, the ultraviolet absorber is not modified, so that the intersolubility among the components of the system is reduced, and the ultraviolet transmittance of the ultraviolet-resistant insect-proof net is increased at the 6 th month, because the intersolubility of the unmodified ultraviolet absorber and the polyester is poor, the unmodified ultraviolet absorber migrates to the surface of the polyester in the use process, and the ultraviolet absorber falls off after a long time action, so that the ultraviolet transmittance is increased, the heat aging resistance is reduced, and the breaking strength is slightly reduced; the detection result shows that the ultraviolet-resistant insect-proof net prepared by the invention can be well applied to a greenhouse window frame, is light and thin, is convenient for opening and closing the window, has high breaking strength, can have larger interlayer distance during use, enhances ventilation performance, and has good heat aging resistance and can effectively prevent UV penetration.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (10)
1. The ultraviolet-resistant insect-proof net is characterized by comprising the following raw materials in parts by mass: 80 to 95 parts of polyester, 10 to 15 parts of plasticizer and 0.2 to 0.8 part of insect-preventing herbal medicine;
the raw materials also comprise an ultraviolet absorber; the ultraviolet absorbent is hydroxy modified 2- (2-hydroxy-3-tertiary butyl-5-methylphenyl) -5-chlorobenzotriazole.
2. An anti-ultraviolet insect-proof net according to claim 1, wherein the mass ratio of the polyester to the ultraviolet absorbent is 1 (0.05-0.2).
3. An anti-uv insect net according to claim 1, wherein the plasticizer is one or more of tricresyl phosphate, trioctyl trimellitate and propylene glycol adipate polyester.
4. An anti-uv insect net according to claim 1, wherein the insect-repellent herbs are one or more of lavender, wild chrysanthemum, impatiens balsamina, peppermint, citronella, rosemary and mosquito-repellent herbs.
5. An anti-uv insect net according to claim 1, wherein the polyester is one or more of polyethylene terephthalate, polybutylene terephthalate and polycarbonate.
6. An anti-uv insect net according to any one of claims 1-5, wherein the raw material further comprises modified nano titanium dioxide.
7. A process for preparing the anti-ultraviolet insect-proof net as claimed in claim 6, comprising the following steps:
s1, uniformly mixing polyester, insect-proof herbal medicines, modified nano titanium dioxide and an ultraviolet absorbent according to mass;
s2, drawing the mixture uniformly mixed in the step S1 into 10-30 filaments of high-transparency monofilaments through an extruder;
s3, weaving the high-transparency monofilaments into a woven belt by a belt loom, and performing heat setting to form a low-shrinkage net sheet;
s4, hot cutting the mesh according to a window frame, vertically, tightly and flatly abutting the transverse mesh along the edge locking position of the longitudinal mesh, and placing the mesh into a presser foot of a computer pattern machine for retention and compaction;
s5, sewing the upper and lower adjacent meshes alternately with inner lockstitching and outer lockstitching to obtain the ultraviolet-resistant insect-proof net.
8. The process for preparing an anti-ultraviolet insect-resistant net as claimed in claim 7, wherein the insect-resistant net is formed by a plurality of double filaments bonded by two monofilaments at equal intervals along the longitudinal stretching direction.
9. The process for preparing an anti-ultraviolet insect-resistant net as claimed in claim 7, wherein the mesh in the step S3 has a pore diameter of 0.2-1 mm and a width of 50-120 mm.
10. The process for preparing an anti-ultraviolet insect-resistant net as claimed in claim 7, wherein the width of the stitched area after stitching in the step S5 is 0.5mm to 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311807941.1A CN117779233A (en) | 2023-12-26 | 2023-12-26 | Ultraviolet-resistant insect-proof net and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311807941.1A CN117779233A (en) | 2023-12-26 | 2023-12-26 | Ultraviolet-resistant insect-proof net and preparation process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117779233A true CN117779233A (en) | 2024-03-29 |
Family
ID=90384548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311807941.1A Pending CN117779233A (en) | 2023-12-26 | 2023-12-26 | Ultraviolet-resistant insect-proof net and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117779233A (en) |
-
2023
- 2023-12-26 CN CN202311807941.1A patent/CN117779233A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2010120201A2 (en) | Reflective netting material | |
| DE102013010702C5 (en) | Plant cultivation roofing with temperature-dependent radiation transparency and master blend for its manufacture | |
| CN117779233A (en) | Ultraviolet-resistant insect-proof net and preparation process thereof | |
| CN108178886A (en) | A kind of fire-retardant drop stretch-proof film and preparation method thereof that disappears of agricultural | |
| CN205389953U (en) | Laying hen chicken coop with small window for ventilation | |
| CN2500092Y (en) | Insect preventing sunshade net | |
| CN1144514C (en) | plant protection body | |
| CN111154166A (en) | Oil shale semi-coke multifunctional mulching film and preparation method thereof | |
| CN108999348B (en) | Adjustable skylight structure for civil building attic | |
| TWI702258B (en) | Agricultural covering material composition, agricultural covering material and manufacturing method of agricultural covering material | |
| CN110870424B (en) | The application of light-transmitting materials and their composite carriers in agriculture based on retaining specific wavelengths | |
| Montero et al. | Greenhouse design and covering materials | |
| CN110741856A (en) | Preparation method of insect-resistant anti-aging sunshade net | |
| Castellano et al. | Design and use criteria of netting systems for agricultural production in Italy | |
| EP0206304A1 (en) | Covering sheet for agricultural use | |
| CN205431280U (en) | Anti -wind type warmhouse booth | |
| CN105386701B (en) | The commercial house removes formaldehyde window with mosquito proof | |
| DE102004012885A1 (en) | Thermoplastic plastic film with lamellar perforations for growing vegetables | |
| KR100816017B1 (en) | Method of manufacturing flame retardant kapok fiber using radiation | |
| KR102435291B1 (en) | light-lighting network for vinyl greenhouses | |
| KR102468013B1 (en) | Agricultural porous laminated film with excellent high temperature reduction effect | |
| CN220511757U (en) | Multilayer-covered greenhouse film | |
| JP3760054B2 (en) | Agricultural coated mesh material | |
| CN201467763U (en) | Flame proof ultra-violet ray resistant turn-over preventing non-woven cloth curtain | |
| CN222692579U (en) | Outdoor lamp box insecticidal lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |