CN115821585A - Textile auxiliary for high-wear-resistance forming net and preparation method thereof - Google Patents
Textile auxiliary for high-wear-resistance forming net and preparation method thereof Download PDFInfo
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- 239000004753 textile Substances 0.000 title claims abstract description 74
- 238000002360 preparation method Methods 0.000 title claims abstract description 61
- 239000011347 resin Substances 0.000 claims abstract description 76
- 229920005989 resin Polymers 0.000 claims abstract description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000002079 double walled nanotube Substances 0.000 claims abstract description 41
- 238000003756 stirring Methods 0.000 claims abstract description 34
- 238000002156 mixing Methods 0.000 claims abstract description 31
- 239000011259 mixed solution Substances 0.000 claims abstract description 21
- 239000006229 carbon black Substances 0.000 claims abstract description 15
- 229910021392 nanocarbon Inorganic materials 0.000 claims abstract description 14
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 13
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910033181 TiB2 Inorganic materials 0.000 claims abstract description 11
- 150000003839 salts Chemical class 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 239000000654 additive Substances 0.000 claims abstract description 7
- 230000000996 additive effect Effects 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 239000004094 surface-active agent Substances 0.000 claims abstract description 7
- 239000003085 diluting agent Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 40
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 34
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 24
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 24
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 24
- 239000006185 dispersion Substances 0.000 claims description 21
- 238000001914 filtration Methods 0.000 claims description 21
- 238000005299 abrasion Methods 0.000 claims description 19
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 150000003904 phospholipids Chemical class 0.000 claims description 10
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 10
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 9
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 9
- 229960001701 chloroform Drugs 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 8
- 238000010992 reflux Methods 0.000 claims description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 5
- 239000011780 sodium chloride Substances 0.000 claims description 5
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 2
- 230000035699 permeability Effects 0.000 description 49
- 230000000694 effects Effects 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 230000004048 modification Effects 0.000 description 10
- 238000012986 modification Methods 0.000 description 10
- 239000002041 carbon nanotube Substances 0.000 description 9
- 229910021393 carbon nanotube Inorganic materials 0.000 description 9
- 239000000835 fiber Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical group CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 description 7
- 230000002209 hydrophobic effect Effects 0.000 description 6
- 230000006872 improvement Effects 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 239000011148 porous material Substances 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- VMSIYTPWZLSMOH-UHFFFAOYSA-N 2-(dodecoxymethyl)oxirane Chemical compound CCCCCCCCCCCCOCC1CO1 VMSIYTPWZLSMOH-UHFFFAOYSA-N 0.000 description 1
- CDVAIHNNWWJFJW-UHFFFAOYSA-N 3,5-diethoxycarbonyl-1,4-dihydrocollidine Chemical group CCOC(=O)C1=C(C)NC(C)=C(C(=O)OCC)C1C CDVAIHNNWWJFJW-UHFFFAOYSA-N 0.000 description 1
- CDOUZKKFHVEKRI-UHFFFAOYSA-N 3-bromo-n-[(prop-2-enoylamino)methyl]propanamide Chemical compound BrCCC(=O)NCNC(=O)C=C CDOUZKKFHVEKRI-UHFFFAOYSA-N 0.000 description 1
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 1
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 description 1
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004841 bisphenol A epoxy resin Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- DFFDSQBEGQFJJU-UHFFFAOYSA-M butyl carbonate Chemical compound CCCCOC([O-])=O DFFDSQBEGQFJJU-UHFFFAOYSA-M 0.000 description 1
- 235000019329 dioctyl sodium sulphosuccinate Nutrition 0.000 description 1
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 125000000373 fatty alcohol group Chemical group 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229940051841 polyoxyethylene ether Drugs 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- -1 polyoxypropylene Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000008347 soybean phospholipid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
Landscapes
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The application relates to the technical field of textile auxiliary agents, and particularly discloses a textile auxiliary agent for a high-wear-resistance forming net and a preparation method thereof. The textile auxiliary for the high-wear-resistance forming net comprises the following components in parts by weight: 20-40 parts of modified hydrophilic resin; 10-15 parts of metal organic salt; 30-50 parts of a surfactant; 90-150 parts of an additive; 15-25 parts of water; 5-10 parts of a curing agent; the preparation method of the modified hydrophilic resin comprises the following steps: adding the double-wall carbon nano tube and the diluent into the hydrophilic resin, stirring and mixing to obtain a mixed solution; adding the nano carbon black and the nano titanium diboride into the mixed solution, stirring, mixing and ultrasonically dispersing to obtain the modified hydrophilic resin. The textile auxiliary can be used for impregnating the forming net to improve the wear resistance of the forming net and prolong the service life of the forming net to a great extent.
Description
Technical Field
The application relates to the technical field of textile auxiliary agents, in particular to a textile auxiliary agent for a high-wear-resistance forming net and a preparation method thereof.
Background
The forming wire is a water-filtering wire used in the forming part of paper machine and made of polyester monofilament, and the paper pulp from the head box of paper machine is attached to the surface of forming wire for dewatering and setting.
The forming net is characterized by light weight, acid and alkali resistance, and in order to prolong the service life of the forming net in the related technology, nylon monofilaments with better wear resistance are added in the wefts of some manufacturers so as to improve the wear resistance of the forming net.
In view of the above-mentioned related technologies, the inventor found that nylon monofilament is limited by its material, lacks a certain dimensional stability, and shrinks when heated, thereby reducing the usability of the forming net. Therefore, on the basis of ensuring the high dimensional stability of the forming net, the research of the forming net with better wear resistance has very important significance.
Disclosure of Invention
In order to improve the wear resistance of the forming net on the basis of ensuring the high dimensional stability of the forming net, the application provides a textile auxiliary for the high-wear-resistance forming net and a preparation method thereof.
In a first aspect, the application provides a textile auxiliary for a high-wear-resistance forming net, which adopts the following technical scheme:
a textile auxiliary for a high-wear-resistance forming net comprises the following components in parts by weight:
20-40 parts of modified hydrophilic resin;
10-15 parts of metal organic salt;
30-50 parts of a surfactant;
90-150 parts of an additive;
15-25 parts of water;
5-10 parts of a curing agent;
the preparation method of the modified hydrophilic resin comprises the following steps: adding the double-wall carbon nano tube and the diluent into the hydrophilic resin, stirring and mixing to obtain a mixed solution; adding the nano carbon black and the nano titanium diboride into the mixed solution, stirring, mixing and ultrasonically dispersing to obtain the modified hydrophilic resin.
By adopting the technical scheme, the textile auxiliary prepared by the method is subjected to performance detection, the effective service life of the textile auxiliary is longer than 78.2 days, and the air permeability is 665m 3 More than h, the effective life time of the textile auxiliary is only 45.5 days compared with the textile auxiliary prepared by not using the modified hydrophilic resin, and the air permeability is 712m 3 The textile auxiliary prepared in the application is proved to greatly improve the wear resistance of the forming net, greatly prolong the service life of the forming net and simultaneously eliminate the problem of reducing the size stability caused by introducing nylon; the air permeability is slightly reduced, the use requirement is still met, and the filter has better filtering efficiency.
The reason probably lies in that the nano carbon black and the nano titanium diboride have wear resistance, the modified hydrophilic resin has stronger wear resistance, and the textile auxiliary agent prepared from the modified hydrophilic resin is attached to the fiber surface of the forming net to form a protective film, so that on one hand, the wear to the surface of the forming net is directly reduced, on the other hand, the fluffing of the surface of the forming net is reduced, and the fibers on the surface of the forming net are smooth after being impregnated, so that the performance is better;
a certain gap is reserved around the nano carbon black and the nano titanium diboride mixed in the hydrophilic resin for water to flow out, and the double-wall carbon nano tubes are added to form a hollow water delivery channel in the modified hydrophilic resin for water to flow out, so that the modified hydrophilic resin prepared by mixing the nano carbon black, the nano titanium diboride and the double-wall carbon nano tubes with the hydrophilic resin as a matrix has better air permeability and water permeability;
therefore, the auxiliary agent prepared from the modified hydrophilic resin effectively improves the service performance of the forming net, and improves the wear resistance of the forming net under the condition of ensuring the size stability of the forming net.
Preferably, the double-walled carbon nanotube is a modified carbon nanotube, and the preparation method of the modified carbon nanotube comprises the following steps:
adding a double-wall carbon nano tube, a silane coupling agent and tetrahydrofuran into absolute ethyl alcohol, stirring and mixing, performing ultrasonic dispersion, heating and refluxing, and filtering to obtain a mixture A;
II, adding phospholipid and the mixture A into trichloromethane, performing ultrasonic dispersion, drying, adding acetone, and centrifuging to obtain a mixture B;
III, adding the mixture B, water and butyl titanate into absolute ethyl alcohol, stirring and mixing, centrifuging, washing and drying to obtain the modified carbon nano tube.
By adopting the technical scheme, the performance of the impregnated forming net of the textile auxiliary prepared by the method is detected, the service life of the forming net is prolonged by 2.9 days, the wear resistance of the forming net is better, and the reduction of the air permeability difference value is obviously reduced by 5m 3 The excellent air permeability was maintained after continuous operation of the forming wire, which was analyzed for possible reasons:
the hydrophobic modification is carried out on the double-wall carbon nano tube by a silane coupling agent, the hydrophobic properties of the inner surface and the outer surface of the double-wall carbon nano tube are improved, then a layer of hydrophilic ester molecules is coated on the outer surface of the double-wall carbon nano tube by phospholipid, and a thin hydrophilic film is formed on the outer surface of the double-wall carbon nano tube by butyl carbonate, so that the modified double-wall carbon nano tube forms an inner hydrophobic and outer hydrophilic structure, the water molecules are accelerated to enter the inside of the double-wall carbon nano tube and are quickly discharged along a hydrophobic internal channel, the water permeability of the forming net is improved, the erosion damage caused by water stored in the forming net for a long time is reduced, the durability of the forming net is improved, and the problems of fiber deformation, pore reduction and air permeability reduction caused by water immersion are improved; meanwhile, the fluffing phenomenon of the forming net in the repeated soaking and drying process is reduced, so that the surface is smooth and smooth, and the wear resistance is better.
Preferably, in the step I, the weight ratio of the absolute ethyl alcohol to the double-walled carbon nanotube to the silane coupling agent to the tetrahydrofuran is (80-100): 1, (2-4): 3-7.
By adopting the technical scheme, the performance of the impregnated forming net of the textile auxiliary prepared by the method is detected, and the service life of the forming net is prolongedThe length is increased to 88.8 to 89.3 days, and the air permeability is increased to 683 to 686m 3 And h, showing that when the weight ratio of the absolute ethyl alcohol to the double-wall carbon nano tube to the silane coupling agent to the tetrahydrofuran is in the range, the silane coupling agent has high hydrophobic modification degree on the inner surface of the double-wall carbon nano tube, and further improves the drainage efficiency.
Preferably, in the step ii, before the mixture a is added to chloroform, the mixture a is further pretreated, and the pretreatment specifically comprises the following steps:
adding the mixture A into the inorganic salt dispersion liquid, decompressing, ultrasonically stirring and mixing, filtering to remove filtrate, evaporating and drying to obtain the inorganic salt dispersion liquid;
the inorganic salt dispersion liquid is a mixed liquid of inorganic salt and trichloromethane according to the weight ratio of 1 (2-4).
Through adopting above-mentioned technical scheme, carry out the performance detection to the forming network after the textile auxiliary agent flooding that this application made, forming network effective life is long, the air permeability slightly improves, and the air permeability difference effectively reduces, and its reason of analysis probably lies in:
the hydrophobically modified double-walled carbon nanotube is added into the inorganic salt dispersion liquid, and the inorganic salt cannot enter the inside of the double-walled carbon nanotube to block the outer surface of the double-walled carbon nanotube, so that the phospholipid is only attached to the outer surface of the carbon nanotube, and the hydrophilic modification precision of the butyl titanate on the outer surface of the carbon nanotube is improved. Then, in the process of adding water, the inorganic salt is dissolved with the water, and the good water permeability of the modified carbon nano tube is ensured.
Preferably, the inorganic salt is obtained by mixing sodium carbonate, potassium carbonate and sodium chloride.
Preferably, the weight ratio of the mixture A to the inorganic salt dispersion is 1 (30-50).
By adopting the technical scheme, the different inorganic salts are compounded, so that the inorganic salt components obtained by compounding have different water-soluble rates, the hydrophilic modification effect of phospholipid and butyl titanate on the surface of the double-wall carbon nano tube is convenient to control, when the weight ratio of the mixture A to the inorganic salt dispersion liquid is in the range, the performance of the forming net impregnated by the textile auxiliary prepared by the method is detected, the air permeability difference is further reduced, and the use performance of the textile auxiliary is better.
Preferably, in the step III, the weight ratio of the absolute ethyl alcohol to the mixture B to the water to the butyl titanate is (200-300): 1, (3-7): 5-7).
By adopting the technical scheme, the performance of the forming net impregnated with the textile auxiliary prepared by the method is detected, and compared with the forming net with the weight ratio of all components not in the range, the air permeability difference value of the forming net is reduced from 38 to 36m 3 And h, showing that when the weight ratio of the absolute ethyl alcohol, the mixture B, the water and the butyl titanate is in the range, the butyl titanate has higher hydrophilic modification degree on the outer surface of the double-wall carbon nano tube, and further improves the filtration efficiency.
Preferably, the reaction conditions of step i are: heating to 120-150 deg.C, and refluxing for 18-22h;
the reaction conditions of the step III are as follows: stirring and mixing for 6-10h at 20-30 ℃.
By adopting the technical scheme, the reaction conditions of the step I and the step III are controlled, so that the prepared auxiliary agent has better performances, and the reason for analyzing the performance is probably that the modification effects of the double-wall carbon nano tube on the inner hydrophobicity and the outer hydrophilicity are better in the reaction conditions.
Preferably, in the preparation process of the modified hydrophilic resin, the weight ratio of the hydrophilic resin to the double-wall carbon nano tubes to the nano carbon black to the nano titanium diboride is 50 (1-1.5) to (2.5-3.5) to (2.25-3.25).
By adopting the technical scheme, the textile auxiliary prepared by the method is subjected to performance detection, and compared with the textile auxiliary with the weight ratio of each component not in the range, the effective service life of the textile auxiliary is often prolonged by 4.2-5.1 days, and the air permeability is improved by 3-5m 3 The air permeability difference is slightly reduced, which shows that when the weight ratio of the hydrophilic resin, the double-wall carbon nano tube, the nano carbon black and the nano titanium diboride is in the range, the performance of the textile auxiliary agent is better.
In a second aspect, the application provides a preparation method of a textile auxiliary for a high-wear-resistance forming net, which adopts the following technical scheme:
a preparation method of a textile auxiliary for a high-wear-resistance forming net comprises the following steps:
s1, adding water and metal organic salt into modified hydrophilic resin, stirring and mixing, and performing ultrasonic dispersion to obtain a mixed solution C;
s2, adding a surfactant and an additive into the mixed solution C, and stirring and mixing to obtain a mixed solution D;
and S3, adding a curing agent into the mixed solution D, and stirring and mixing to obtain the textile auxiliary for the high-wear-resistance forming net.
By adopting the technical scheme, the process is simple, the condition is mild, the preparation of the textile auxiliary is conveniently, concisely and efficiently completed, the wear resistance of the prepared textile auxiliary to the forming net is greatly improved, and the service life of the forming net is greatly prolonged.
In summary, the present application has the following beneficial effects:
1. according to the method, the hydrophilic resin is modified by using the nano carbon black and the nano titanium diboride, the prepared textile auxiliary forms a protective film on the fiber surface of the forming net, so that the wear resistance of the forming net is improved, the service life of the forming net is prolonged, and meanwhile, a large number of water delivery channels are generated in the modified hydrophilic resin by introducing the double-wall carbon nano tubes, so that the prepared textile auxiliary has excellent wear resistance while the excellent filtering efficiency is ensured;
2. by using the modified carbon nano tube, the efficiency of external water molecules entering the carbon nano tube is improved, the water molecules in the carbon nano tube are promoted to be discharged, the discharging speed of the water molecules is accelerated, the long-time detention of the water molecules is reduced while the water discharging efficiency is improved, the phenomenon of pore shrinkage caused by the deformation of the immersed fiber is reduced, and the air permeability and the water permeability of the forming net after long-time use are improved;
3. through using inorganic salt dispersion in this application, improve the hydrophilic modified effect of modified carbon nanotube, and then improve the promotion effect of textile auxiliary to the shaping net performance.
Detailed Description
The present application will be described in further detail with reference to examples.
Preparation example
Preparation example 1
A modified hydrophilic resin is prepared by the following steps: adding 0.75kg of double-walled carbon nanotube and 3.5kg of diluent into 50kg of hydrophilic resin, and stirring and mixing for 20min at 50 ℃ to obtain a mixed solution; adding 2kg of nano carbon black and 2kg of nano titanium diboride into the mixed solution, stirring and mixing at 50 ℃ for 30min, and performing ultrasonic dispersion at 100W for 30min to obtain modified hydrophilic resin;
wherein the hydrophilic resin is bisphenol A epoxy resin, and the manufacturer is Shenyang Xinmaofu Fine chemical industry materials Co., ltd., type E-44;
double-walled carbon nanotubes: the manufacturer is North Korea science and technology Co., ltd, suzhou, with model number of BKMK2060-01;
diluent (b): dodecyl glycidyl ether;
nano carbon black: particle size 24nm, surface area 112m 2 /g。
Preparation examples 2 to 4
A modified hydrophilic resin was distinguished from preparation example 1 in that the components and their respective weights were different, as shown in Table 1.
TABLE 1 Components and weights (kg) of preparation examples 1-4
Preparation example 5
A modified hydrophilic resin is different from the preparation example 3 in that, in the preparation process of the modified hydrophilic resin, the same amount of modified double-wall carbon nanotubes are used for replacing double-wall carbon nanotubes, and the preparation method of the modified double-wall carbon nanotubes comprises the following steps:
adding 1kg of double-walled carbon nanotube, 1.5kg of silane coupling agent and 2.5kg of tetrahydrofuran into 70kg of absolute ethyl alcohol, stirring and mixing, ultrasonically dispersing for 30min, heating to 110 ℃, refluxing for 15h, filtering, and drying for 2h at 30 ℃ to obtain a mixture A;
wherein the silane coupling agent is methyl trimethoxy silane;
II, adding 0.2kg of the mixture A into 10kg of phospholipid solution, performing 50W ultrasonic dispersion for 50min, drying by blowing nitrogen, adding 2kg of acetone, performing 50W ultrasonic dispersion for 30min, and centrifuging to obtain a mixture B;
wherein the phospholipid solution is a mixed solution of phospholipid and trichloromethane according to a weight ratio of 1; phospholipid: soya lecithin, manufactured by Hebei Tuohai Biotech limited, cat # 888;
III, adding 100g of the mixture B, 800g of water and 800g of butyl titanate into 15kg of absolute ethyl alcohol, stirring and mixing, reacting for 5 hours at 30 ℃, centrifuging and drying to obtain the modified double-wall carbon nano tube.
Preparation example 6
The modified hydrophilic resin is different from the preparation example 5 in the usage amounts of absolute ethyl alcohol, methyl trimethoxy silane and tetrahydrofuran in the step I, and specifically comprises the following steps:
the weight ratio of the absolute ethyl alcohol to the double-walled carbon nanotube to the methyltrimethoxysilane to the tetrahydrofuran is 80.
Preparation example 7
A modified hydrophilic resin is different from the preparation example 5 in the usage amount of absolute ethyl alcohol, methyl trimethoxy silane and tetrahydrofuran in the step I, and specifically comprises the following components:
the weight ratio of the absolute ethyl alcohol to the double-walled carbon nanotube to the methyltrimethoxysilane to the tetrahydrofuran is 90.
Preparation example 8
The modified hydrophilic resin is different from the preparation example 5 in the usage amounts of absolute ethyl alcohol, methyl trimethoxy silane and tetrahydrofuran in the step I, and specifically comprises the following steps:
the weight ratio of the absolute ethyl alcohol to the double-walled carbon nanotube to the methyltrimethoxysilane to the tetrahydrofuran is 100.
Preparation example 9
A modified hydrophilic resin is different from the preparation example 7 in that in the step III, the use amounts of absolute ethyl alcohol, the mixture B, water and butyl titanate are different, and specifically:
the weight ratio of the absolute ethyl alcohol to the mixture B to the water to the butyl titanate is 200.
Preparation example 10
A modified hydrophilic resin is different from the preparation example 7 in that in the step III, the use amounts of absolute ethyl alcohol, the mixture B, water and butyl titanate are different, and specifically:
the weight ratio of the anhydrous ethanol to the mixture B to the water to the butyl titanate is 250.
Preparation example 11
A modified hydrophilic resin is different from the preparation example 7 in that in the step III, the use amounts of absolute ethyl alcohol, the mixture B, water and butyl titanate are different, and specifically:
the weight ratio of the anhydrous ethanol to the mixture B to the water to the butyl titanate is 300.
Preparation example 12
A modified hydrophilic resin is different from the modified hydrophilic resin prepared in preparation example 10 in that the reaction conditions of the step I and the step III are different, and specifically the reaction conditions comprise the following steps:
in the step I: heating to 120 ℃, and refluxing for 18h;
step III: the stirring temperature is 30 ℃, and the stirring time is 6h.
Preparation example 13
A modified hydrophilic resin is different from the modified hydrophilic resin prepared in preparation example 10 in that the reaction conditions of the step I and the step III are different, and specifically the reaction conditions comprise the following steps:
in the step I: heating at 130 ℃, and refluxing for 20h;
step III: the stirring temperature is 30 ℃, and the stirring time is 8h.
Preparation example 14
A modified hydrophilic resin is different from the modified hydrophilic resin prepared in preparation example 10 in that the reaction conditions of the step I and the step III are different, and specifically the reaction conditions comprise the following steps:
in the step I: heating to 150 ℃, and refluxing for 22h;
step III: the stirring temperature is 30 ℃, and the stirring time is 10h.
Preparation example 15
A modified hydrophilic resin, which is different from preparation example 13 in that the mixture A is also pretreated before being added to a phospholipid solution, and the pretreatment comprises the following specific steps:
adding 1kg of mixture A into 25kg of inorganic salt dispersion, performing ultrasonic treatment at 100W for 20min, stirring and mixing at 25 deg.C for 15min, filtering to remove filtrate, and evaporating to dry for 20min to obtain the final product;
wherein the inorganic salt dispersion liquid is a mixed liquid of inorganic salt and trichloromethane according to a weight ratio of 1.
Preparation example 16
A modified hydrophilic resin, which is different from the preparation example 15 in the use condition of inorganic salt, specifically: the inorganic salt is a mixture of sodium carbonate and sodium chloride according to a weight ratio of 1.
Preparation example 17
A modified hydrophilic resin is different from the modified hydrophilic resin prepared in preparation example 15 in the use condition of inorganic salt, and specifically comprises the following components: the inorganic salt is a mixture of sodium carbonate, potassium carbonate and sodium chloride according to a weight ratio of 1.
Preparation example 18
A modified hydrophilic resin, which is different from preparation example 17 in the amount of the inorganic salt dispersion used, specifically, it is: the weight ratio of mixture a to inorganic salt dispersion was 1.
Preparation example 19
A modified hydrophilic resin, which is different from preparation example 17 in the amount of the inorganic salt dispersion used, specifically: the weight ratio of mixture a to inorganic salt dispersion was 1.
Preparation example 20
A modified hydrophilic resin, which is different from preparation example 17 in the amount of the inorganic salt dispersion used, specifically, it is: the weight ratio of mixture a to inorganic salt dispersion was 1.
Examples
Example 1
The textile auxiliary for the high-wear-resistance forming net comprises the components and the corresponding weight shown in the table 3, and is prepared by the following steps:
s1, adding water and metal organic salt into modified hydrophilic resin, stirring and mixing, reacting for 20min at 25 ℃, performing ultrasonic dispersion for 20min, and performing ultrasonic power of 120W to obtain a mixed solution C;
s2, adding a surfactant and an additive into the mixed solution C, stirring and mixing, and reacting at 25 ℃ for 10min to obtain a mixed solution D;
and S3, adding a curing agent into the mixed solution D, stirring and mixing, and reacting at 70 ℃ for 2 hours to obtain the textile auxiliary for the high-wear-resistance forming net.
Wherein, the modified hydrophilic resin is prepared from the preparation example 1;
the metal organic salt is ferric acetylacetonate;
the surfactant is fatty alcohol polyoxypropylene ether sodium sulfate;
the additive is a mixture of dioctyl sodium sulfosuccinate, disodium polyacrylate disodium ethylene diamine tetraacetate and fatty alcohol-polyoxyethylene ether according to a weight ratio of 2.5;
curing agent: t31 curing agent, manufactured by Shanghai, was a chemical company Limited.
Examples 2 to 5
A textile auxiliary for a high-abrasion-resistance forming net is different from that of example 1 in that the components and the corresponding weights thereof are different, as shown in Table 2.
TABLE 2 Components and weights (kg) of examples 1-5
Examples 6 to 8
A textile auxiliary for a high-abrasion forming net is different from example 3 in the using condition of modified hydrophilic resin, and is specifically shown in Table 3.
Example 9
A textile auxiliary for forming a high abrasion-resistant net is different from that of example 7 in the use condition of the modified hydrophilic resin, which is specifically shown in Table 3.
Examples 10 to 12
A textile auxiliary for a high-abrasion forming net is different from that of example 9 in the use condition of modified hydrophilic resin, and is specifically shown in Table 3.
Examples 13 to 15
A textile auxiliary for forming a high-abrasion-resistant forming net is different from that of example 11 in the use condition of modified hydrophilic resin, and is specifically shown in Table 3.
Examples 16 to 18
A textile auxiliary for forming a high abrasion-resistant net is different from the textile auxiliary of example 14 in the use condition of the modified hydrophilic resin, and is specifically shown in Table 3.
Example 19
A textile auxiliary for forming a high-abrasion-resistant forming net is different from the textile auxiliary of example 17 in the using condition of the modified hydrophilic resin, and is specifically shown in Table 3.
Examples 20 to 21
A textile auxiliary for forming a high abrasion-resistant net is different from that of example 19 in the use condition of the modified hydrophilic resin, which is specifically shown in Table 3.
Examples 22 to 24
A textile auxiliary for forming a high-abrasion-resistant forming net is different from the textile auxiliary of example 21 in the using condition of the modified hydrophilic resin, and is specifically shown in Table 3.
TABLE 3 comparative table of use of modified hydrophilic resins in examples 1 to 24
Comparative example
Comparative example 1
A textile auxiliary which is different from example 1 in that an equivalent amount of bisphenol A type epoxy resin was used in place of the modified hydrophilic resin.
Comparative example 2
A textile auxiliary, which is different from example 1 in that, in the preparation of the modified hydrophilic resin, double-walled carbon nanotubes are not used, and the same amount of carbon black is used instead of the double-walled carbon nanotubes.
Comparative examples 3 to 4
A textile auxiliary differs from example 1 in the amounts of the individual components used, as shown in Table 4.
TABLE 4 Components and weights (kg) of example 1, comparative examples 3-4
Detection method
Test one: testing the effective service life duration: the forming net prepared by the method is soaked in the textile auxiliary for the forming net, the forming net is taken out, dried and solidified to obtain a sample, the specification of the forming net is 30cm in width and 21m in length, the sample is placed on a paper machine to continuously run, the running speed of the paper machine is 500m/min, the number of days when the mass loss of the sample is 20% is detected and is recorded as the effective service life duration, and the longer the duration is, the better the wear-resisting effect of the forming net is.
And (2) test II: and (3) testing air permeability: taking a molding net which is soaked with the auxiliary agent and dried, and uniformly selecting 6 test points on the molding net for air permeability test, wherein the unit (m) is 3 /h), the test instrument used an FX-3360Portair permeameter with air pressure set at 125Pa;
1. detecting the air permeability of a forming net which does not run on a paper machine, wherein the better the air permeability, the more or larger the pores of the forming net, the better the water permeability and the higher the filtering efficiency;
2. and respectively testing the air permeability of the forming net which does not run on the paper machine and the forming net which continuously runs on the paper machine for 24 hours, recording the air permeability of the forming net and the forming net, and calculating the difference value of the air permeability, wherein the smaller the difference value is, the lower the probability of deformation and dislocation of meshes of the forming net caused by abrasion or soaking is shown, and the higher the filtering efficiency and the better the wear resistance of the forming net after running for 24 hours are also shown.
TABLE 5 Performance test results
In example 1, the effective life of the forming net is up to 78.2 days due to the use of the textile auxiliary prepared in the application for impregnating the forming net, while in comparative example 1, the effective life of the forming net is only 45.5 days due to the use of the textile auxiliary without adding the modified hydrophilic resin for impregnating, thereby showing that the wear resistance of the forming net is effectively improved by impregnating the forming net with the textile auxiliary prepared in the application;
however, in example 1, the air permeability of the forming net is slightly reduced due to the formation of the abrasion-resistant layer on the surface of the fibers of the forming net, which indicates that the forming net has a reduced rate of water permeability, but the forming net impregnated with the aid prepared in the present application is still a forming net with better filtration efficiency.
Comparative example 2 is different from example 1 in that the textile auxiliary prepared without using the double-walled carbon nanotube during the preparation of the modified hydrophilic resin greatly reduces the air permeability of the impregnated forming net from 665m 3 The/h is reduced to 618m 3 H is used as the reference value. Therefore, the hollow water delivery channel in the epoxy resin is formed by using the double-wall carbon nano tube, so that the air permeability and water permeability of the textile auxiliary are obviously improved, and the filtering efficiency of the surface of the forming net is improved.
Meanwhile, the use amount of the nano carbon black is singly increased, so that the wear-resisting effect of the forming net is not remarkably improved, and the nano carbon black is better compatible with hydrophilic resin when being used in a certain range, and the improvement effect on the wear-resisting property of the forming net is better.
Examples 2 to 5 and comparative examples 3 to 4 differ from example 1 in the amount of the individual components of the textile auxiliary used. Compared with example 1, the effective service life duration of examples 2-5 is improved to 78.5-79.4 days, and the air permeability is improved to 666-670m 3 The performance is better; the effective life time of comparative examples 3 to 4 was only 71.2 to 72.6 days, and the air permeability was reduced to 645 to 648m 3 And h, all the performances are inferior. It is thus shown that the performance improvement of the forming wire by the textile auxiliary is more pronounced when the amounts of the individual components of the textile auxiliary are in the range of examples 1 to 5.
Examples 6 to 8 are different from example 3 in that the modified hydrophilic resin is used in different amounts of the respective components in the preparation process of the modified hydrophilic resin. Compared with example 1, the effective service life duration of examples 6 to 8 is improved to 83.6 to 84.5 days, and the air permeability is improved to 673 to 676m 3 H, air permeability difference is 54m 3 The h is reduced to 52 to 53m 3 And h, all the performances are better. Thus, it was shown that when the hydrophilic resin was modifiedWhen the usage amount of each component is within the range of examples 6 to 8, the performance improvement effect of the textile auxiliary on the forming net is more remarkable.
Example 9 is different from example 7 in that, in the preparation process of the modified hydrophilic resin, the same amount of modified carbon nanotubes are used to replace carbon nanotubes, and after the prepared textile auxiliary agent is impregnated into the forming net, the service life of the forming net is prolonged to 87.6 days, the air permeability is slightly improved, and the difference value of the air permeability is greatly reduced and is 52m 3 H to 47m 3 H is used as the reference value. The modified carbon nano tube is used, so that the air permeability of the forming net is further improved, the filtration efficiency is improved, the influence on the air permeability of the forming net is obviously reduced after the forming net continuously runs for 24 hours, the forming net still keeps excellent filtration performance after long-time running is shown, and the wear resistance is better.
The reason for analyzing the carbon nano tube may be that the carbon nano tube has the characteristics of outer hydrophilicity and inner hydrophobicity through modification, water molecules rapidly enter the carbon nano tube and are rapidly discharged along a hydrophobic channel, and fibers in the paper pulp are retained on the surface of the forming net, so that the filtering effect is improved; on one hand, the rapid discharge of water molecules improves the filtration efficiency and balances the influence of the reduction of the air permeability of the forming net caused by the impregnation of the auxiliary agent; on the other hand, the detention time of water molecules among fibers in the forming net is reduced, the conditions that the forming net is deformed and the pores are reduced due to long-time soaking are reduced, and the forming net still has high air permeability, water permeability, high filtering efficiency and excellent wear resistance after long-time operation.
Examples 10 to 12 differ from example 9 in the different amounts of the components used in step I. In examples 10 to 12, the air permeability of the forming wire was further increased to 683 to 686m, respectively 3 H; the service life of the forming net is prolonged to 88.5 to 89.3 days, and the air permeability difference is effectively reduced to 43 to 44
m 3 H is used as the reference value. The results show that when the usage amount of each component in the modified carbon nanotube is in the range of examples 10-12, the compounding effect of each component is better, and the air permeability and the wear resistance of the forming net are improved more remarkably.
Example 13-15 differ from example 11 in the different amounts of the components used in step III, and in examples 13 to 15 the air permeability was increased and the difference in air permeability was further reduced to 38 to 40m 3 H is used as the reference value. It is shown that when the amount of each component in the modified carbon nanotube is in the range of examples 13-15, the butyl titanate has a better hydrophilic modification effect on the outer surface of the carbon nanotube, and the forming net can maintain a better filtering performance for a long time.
Examples 16 to 18 differ from example 14 in the reaction conditions of step I and step III. In examples 16-18, the performance of the forming wire was slightly improved. It was shown that the performance improvement effect on the formed web was optimum when the reaction conditions in step I and step III were within the ranges of examples 16 to 18.
Example 19 differs from example 17 in that the mixture a obtained is pretreated during the preparation of the modified hydrophilic resin and the properties of the forming wire are improved after impregnation with the aid, wherein the difference in air permeability is significantly reduced from 36m 3 Reduction of the reaction time/h to 34m 3 The result shows that the modified carbon nano tube has better modification effect, and the excellent filtering efficiency is kept in the long-time operation process of the forming net.
Examples 20-21 differ from example 19 in the use of inorganic salts in the pretreatment, and the forming wire in example 21 was optimized for each of the properties, higher than in examples 19 and 20, indicating that the aid had the best effect of improving the performance of the forming wire when a mixture of sodium carbonate, potassium carbonate and sodium chloride was used as the inorganic salt.
Examples 22-24 differ from example 21 in the amount of inorganic salt dispersion used in the pretreatment and the performance improvements of examples 22-24, indicating that the best performance improvement of the forming wire is achieved with the aid when the amount of inorganic salt dispersion used is within the range of examples 22-24.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (10)
1. The textile auxiliary for the high-wear-resistance forming net is characterized by comprising the following components in parts by weight:
20-40 parts of modified hydrophilic resin;
10-15 parts of metal organic salt;
30-50 parts of a surfactant;
90-150 parts of an additive;
15-25 parts of water;
5-10 parts of a curing agent;
the preparation method of the modified hydrophilic resin comprises the following steps: adding the double-wall carbon nano tube and the diluent into the hydrophilic resin, stirring and mixing to obtain a mixed solution; adding the nano carbon black and the nano titanium diboride into the mixed solution, stirring, mixing and ultrasonically dispersing to obtain the modified hydrophilic resin.
2. The textile auxiliary for the high abrasion forming net according to claim 1, wherein: the double-wall carbon nano tube is a modified carbon nano tube, and the preparation method of the modified carbon nano tube comprises the following steps:
adding a double-wall carbon nano tube, a silane coupling agent and tetrahydrofuran into absolute ethyl alcohol, stirring and mixing, performing ultrasonic dispersion, heating and refluxing, and filtering to obtain a mixture A;
II, adding phospholipid and the mixture A into trichloromethane, performing ultrasonic dispersion, drying, adding acetone, and centrifuging to obtain a mixture B;
III, adding the mixture B, water and butyl titanate into absolute ethyl alcohol, stirring and mixing, centrifuging, washing and drying to obtain the modified carbon nano tube.
3. The textile auxiliary for the high-abrasion forming net according to claim 2, wherein: in the step I, the weight ratio of the absolute ethyl alcohol to the double-wall carbon nano tube to the silane coupling agent to the tetrahydrofuran is (80-100) to (1), (2-4) to (3-7).
4. The textile auxiliary for the high-abrasion forming net according to claim 2, wherein: in the step II, before the mixture A is added into the trichloromethane, the mixture A is also pretreated, and the pretreatment specifically comprises the following steps:
adding the mixture A into inorganic salt dispersion liquid, decompressing, ultrasonically treating, stirring and mixing, filtering to remove filtrate, evaporating and drying to obtain the inorganic salt dispersion liquid;
the inorganic salt dispersion liquid is a mixed liquid of inorganic salt and trichloromethane according to the weight ratio of 1 (2-4).
5. The textile auxiliary for the high-abrasion forming net according to claim 4, wherein: the inorganic salt is prepared by mixing sodium carbonate, potassium carbonate and sodium chloride.
6. The textile auxiliary for the high-abrasion forming net according to claim 4, wherein: the weight ratio of the mixture A to the inorganic salt dispersion liquid is 1 (30-50).
7. The textile auxiliary for the high-abrasion forming net according to claim 2, wherein: in the step III, the weight ratio of the absolute ethyl alcohol to the mixture B to the water to the butyl titanate is (200-300) to (1), (3-7) to (5-7).
8. The textile auxiliary for the high-abrasion forming net according to claim 2, wherein: the reaction conditions of the step I are as follows: heating to 120-150 deg.C, and refluxing for 18-22h;
the reaction conditions of the step III are as follows: stirring and mixing for 6-10h at 20-30 ℃.
9. The textile auxiliary for the high abrasion forming net according to claim 1, wherein: in the preparation process of the modified hydrophilic resin, the weight ratio of the hydrophilic resin, the double-wall carbon nano-tube, the nano carbon black and the nano titanium diboride is 50 (1-1.5) to (2.5-3.5) to (2.25-3.25).
10. A process for the preparation of a textile auxiliary for a high abrasion forming net according to any of claims 1 to 9, characterized in that it comprises the following steps:
s1, adding water and metal organic salt into modified hydrophilic resin, stirring and mixing, and performing ultrasonic dispersion to obtain a mixed solution C;
s2, adding a surfactant and an additive into the mixed solution C, and stirring and mixing to obtain a mixed solution D;
and S3, adding a curing agent into the mixed solution D, and stirring and mixing to obtain the textile auxiliary agent for the high-wear-resistance forming net.
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