CN115652644B - High-strength blended composite material and preparation method thereof - Google Patents
High-strength blended composite material and preparation method thereof Download PDFInfo
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- CN115652644B CN115652644B CN202211428521.8A CN202211428521A CN115652644B CN 115652644 B CN115652644 B CN 115652644B CN 202211428521 A CN202211428521 A CN 202211428521A CN 115652644 B CN115652644 B CN 115652644B
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- 239000002131 composite material Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000000835 fiber Substances 0.000 claims abstract description 102
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 47
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 47
- 239000004734 Polyphenylene sulfide Substances 0.000 claims abstract description 33
- 150000001408 amides Chemical class 0.000 claims abstract description 33
- 229920002492 poly(sulfone) Polymers 0.000 claims abstract description 33
- 229920000069 polyphenylene sulfide Polymers 0.000 claims abstract description 33
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 58
- 238000002156 mixing Methods 0.000 claims description 39
- 229920001973 fluoroelastomer Polymers 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 31
- 238000004804 winding Methods 0.000 claims description 26
- 238000009941 weaving Methods 0.000 claims description 19
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- 239000000463 material Substances 0.000 claims description 14
- KKYDYRWEUFJLER-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,7,7,10,10,10-heptadecafluorodecyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)CCC(F)(F)F KKYDYRWEUFJLER-UHFFFAOYSA-N 0.000 claims description 11
- 238000002074 melt spinning Methods 0.000 claims description 10
- 230000004048 modification Effects 0.000 claims description 10
- 238000012986 modification Methods 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 10
- 239000003963 antioxidant agent Substances 0.000 claims description 9
- 230000003078 antioxidant effect Effects 0.000 claims description 9
- 239000000314 lubricant Substances 0.000 claims description 9
- 239000004014 plasticizer Substances 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 239000003381 stabilizer Substances 0.000 claims description 9
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 8
- 235000010469 Glycine max Nutrition 0.000 claims description 7
- 244000068988 Glycine max Species 0.000 claims description 7
- 102000003992 Peroxidases Human genes 0.000 claims description 7
- 108040007629 peroxidase activity proteins Proteins 0.000 claims description 7
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 6
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 6
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 6
- 239000008055 phosphate buffer solution Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000009940 knitting Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000009954 braiding Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000009987 spinning Methods 0.000 abstract description 8
- 239000010410 layer Substances 0.000 description 23
- 239000004744 fabric Substances 0.000 description 14
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 description 8
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical group CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 description 8
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 8
- 230000032683 aging Effects 0.000 description 5
- -1 3, 5-di-tert-butyl-4-hydroxyphenyl Chemical group 0.000 description 4
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 4
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 4
- NRCSJPUCBTUPDG-UHFFFAOYSA-N benzyl-chloro-triphenyl-$l^{5}-phosphane Chemical compound C=1C=CC=CC=1P(C=1C=CC=CC=1)(Cl)(C=1C=CC=CC=1)CC1=CC=CC=C1 NRCSJPUCBTUPDG-UHFFFAOYSA-N 0.000 description 4
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical group CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 4
- ZFVMWEVVKGLCIJ-UHFFFAOYSA-N bisphenol AF Chemical compound C1=CC(O)=CC=C1C(C(F)(F)F)(C(F)(F)F)C1=CC=C(O)C=C1 ZFVMWEVVKGLCIJ-UHFFFAOYSA-N 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 229940075507 glyceryl monostearate Drugs 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 4
- 239000001788 mono and diglycerides of fatty acids Substances 0.000 description 4
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical group OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 229920002239 polyacrylonitrile Polymers 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
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- 235000008645 Chenopodium bonus henricus Nutrition 0.000 description 1
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- 125000001153 fluoro group Chemical group F* 0.000 description 1
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- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a high-strength blended composite material and a preparation method thereof, wherein a single modified polyvinyl chloride fiber filament is taken as a core wire, a single modified polysulfone amide fiber filament is spirally wound on the surface of the core wire to form an intermediate layer, the surface of the intermediate layer is continuously and tightly wound with a single modified polyphenylene sulfide fiber filament in a direction perpendicular to the core wire to obtain a composite yarn, and finally the composite yarn is used for spinning. The composite material has excellent mechanical properties and good durability.
Description
Technical Field
The invention belongs to the technical field of composite material preparation, and particularly relates to a high-strength blended composite material and a preparation method thereof.
Background
Textiles are widely applied to various fields such as decoration industry besides clothing, and the functional requirements of the fields on the textiles are high, so that development of the functional textiles can not only generate huge economic and social benefits, but also is a great trend of the development of the textiles in the world.
Various existing fabrics are widely used in various fields, however, in actual use, some defects often occur, such as easy yellowing after long-time sun exposure, strength reduction, low moisture absorption capability, poor comfort, easy pilling, deformation and the like.
Patent document (CN 111118680 a) discloses a high-elasticity wear-resistant fabric, which is obtained by mixing and weaving spandex, nylon and polyacrylonitrile functional fibers, wherein the polyacrylonitrile functional fibers are composite fibers with a skin-core structure, and the prepared functional fibers have high porosity and high strength by regulating and controlling the components, temperature, time and other parameters of spinning solution and coagulation bath in the preparation process of the polyacrylonitrile functional fibers, and the fabric obtained by blending the spandex and the nylon has better wear resistance and high elasticity, is soft and skin-friendly, is moisture-absorbing and breathable, is difficult to deform and is difficult to pill, but the wear-resistant fabric prepared by the patent has poor ageing resistance.
Patent literature (CN 112644118B) discloses a low-density high-tensile fiber fabric and a preparation method thereof, the low-density high-tensile fiber fabric mainly comprises the following raw material components: a velvet layer, an anti-deformation layer and a base material layer; the preparation method of the low-density high-tensile fiber fabric comprises the following steps: changing yarn, oxidizing, twisting yarn, weaving and bonding. In the invention, the composite bonding reinforcing material is adopted, and the upper velvet layer, the anti-deformation layer and the base material layer are bonded with each other, so that the fine and smooth treatment of the upper velvet layer on the surface layer of the fabric is realized on one hand; on the other hand, the whole fabric is subjected to different tensile buffering effects of different fabric layers in the warp and weft directions, so that the tensile strength of the whole fabric is enhanced; meanwhile, the three layers of fabrics are mutually adhered, so that the whole fabric has the effect of lower thickness under higher strength, but the mechanical properties of the fiber fabric prepared by the patent are still to be improved.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a high-strength blended composite material and a preparation method thereof, and the high-strength blended composite material has good mechanical property and good durability.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the preparation method of the high-strength blended composite material comprises the following specific steps:
(1) Firstly, blending polyvinyl chloride, fluororubber, nitrile rubber and nano zirconia, and carrying out melt spinning to obtain modified polyvinyl chloride fiber filaments;
(2) Then, respectively carrying out surface modification treatment on the polysulfone amide fiber filaments and the polyphenylene sulfide fiber filaments to obtain modified polysulfone amide fiber filaments and modified polyphenylene sulfide fiber filaments;
(3) And then, taking a single modified polyvinyl chloride fiber filament as a core wire, spirally winding a single modified polysulfone amide fiber filament on the surface of the core wire to form an intermediate layer, continuously tightly winding a single modified polyphenylene sulfide fiber filament on the surface of the intermediate layer in a direction perpendicular to the core wire to obtain a composite yarn, and finally, weaving by using the composite yarn to obtain the blended composite material.
Preferably, the weight average molecular weight of the polyvinyl chloride is 10-12 ten thousand, the weight average molecular weight of the fluororubber is 6-8 ten thousand, and the weight average molecular weight of the nitrile rubber is 60-70 ten thousand.
Preferably, the specific method of the step (1) comprises the following steps of: firstly, 2-3 parts of nano zirconia is modified by 3-5 parts of heptadecafluorodecyl trimethoxy silane to obtain modified nano zirconia, then the modified nano zirconia is mixed with 20-25 parts of polyvinyl chloride to obtain a mixed material, then the mixed material is continuously mixed with 5-7 parts of fluororubber and 4-6 parts of nitrile rubber, and finally 7-9 parts of plasticizer, 0.5-0.7 part of stabilizer, 0.5-0.7 part of lubricant and 0.5-0.7 part of antioxidant are added, and the mixture is uniformly mixed and melt-spun to obtain the nano zirconia.
Further preferably, the specific method of the modification treatment is as follows: adding nano zirconia into heptadecafluorodecyl trimethoxy silane, stirring at 80-90 ℃ for reaction for 6-8 hours, and centrifuging to obtain precipitate.
Further preferably, the process conditions of the mixing are: mixing for 5-7 minutes at 150-160 ℃; the technological conditions for continuous mixing are as follows: mixing for 25-35 minutes at 175-185 ℃; wherein, dicumyl peroxide and triallyl isocyanurate are also added during continuous mixing, and the dosages of the dicumyl peroxide and the triallyl isocyanurate are respectively 0.9-1% and 0.3-0.4% of the mass of the fluororubber.
Further preferably, the fluororubber is subjected to a pre-vulcanization treatment, specifically comprising: fluororubber, bisphenol AF, benzyl triphenyl phosphorus chloride and magnesium oxide are mixed according to the mass ratio of 5-7: 0.5 to 0.7:0.25 to 0.35:2.5 to 3.5, and presulfiding for 30 to 40 minutes at the temperature of 165 to 175 ℃.
Further preferably, the plasticizer is dioctyl phthalate, the stabilizer is organotin, the lubricant is glyceryl monostearate, and the antioxidant is pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
Further preferably, the melt spinning is performed by using a screw extruder, and the process conditions are as follows: the temperature is 170-180 ℃, the rotating speed of the screw is 20-30 r/min, and the spinning speed is 30-40 m/min.
Preferably, the specific method of the step (2) is as follows in parts by weight: firstly, uniformly mixing 100 parts of dioxane, 4-5 parts of pH=5-6 phosphate buffer solution, 8-10 parts of methacrylic acid and 0.04-0.05 part of soybean peroxidase in a nitrogen atmosphere to obtain a treatment solution, then completely immersing 10-12 parts of polysulfone amide fiber filaments or polyphenylene sulfide fiber filaments in the treatment solution, heating to 35-40 ℃, slowly and uniformly dropwise adding 0.8-1 part of 3-5% hydrogen peroxide solution (dropwise adding time is 10-15 minutes), preserving heat for 2-3 hours after dropwise adding, taking out and washing to obtain the modified polysulfone amide fiber filaments or modified polyphenylene sulfide fiber filaments.
Preferably, in the step (3), the fineness of the modified polyvinyl chloride fiber filaments, the modified polysulfone amide fiber filaments and the modified polyphenylene sulfide fiber filaments is 100-200D, 70-80D and 50-60D respectively.
Preferably, in the step (3), the included angle between the spiral winding and the core wire is 35-45 degrees, and the winding interval is 0.5-0.7 mm.
Preferably, in the step (3), the weaving method is weaving, knitting or braiding, and the structural form is twill.
The high-strength blended composite material is prepared by the preparation method.
Compared with the prior art, the invention has the following beneficial effects:
the invention takes a single modified polyvinyl chloride fiber filament as a core wire, a single modified polysulfone amide fiber filament is spirally wound on the surface of the core wire to form an intermediate layer, the single modified polyphenylene sulfide fiber filament is continuously and tightly wound on the surface of the intermediate layer in the direction perpendicular to the core wire to obtain a composite yarn, and finally the composite yarn is used for spinning to obtain the blended composite material. The composite material has excellent mechanical properties and good durability.
The modified polyvinyl chloride fiber filament is obtained by melt spinning after blending treatment of polyvinyl chloride, fluororubber, nitrile rubber and nano zirconia. Compared with the polyvinyl chloride commonly used in the prior art, the invention carries out composite treatment on the polyvinyl chloride, the fluororubber and the nitrile rubber to obtain the novel polyvinyl chloride fiber filament.
The fluororubber has excellent oxidation resistance, corrosion resistance and ageing resistance and good elasticity, but the fluororubber has large polarity difference with polyvinyl chloride and poor compatibility. According to the invention, the nano zirconia is modified by utilizing heptadecafluorodecyl trimethoxy silane to obtain modified nano zirconia, and then the modified nano zirconia is mixed with polyvinyl chloride to obtain a mixed material, so that a fluorine group is introduced into the mixed material, and the compatibility with fluororubber is improved, so that the modified polyvinyl chloride has excellent properties of fluororubber.
Nitrile rubber has good wear resistance and heat resistance, strong binding force, but poor low temperature resistance and poor elasticity. According to the invention, polyvinyl chloride, fluororubber and nitrile rubber are mixed, and the effect of nano zirconia is combined, so that the performance of the obtained modified polyvinyl chloride is synergistically improved, and the modified polyvinyl chloride has good mechanical performance and weather resistance.
When the composite yarn is prepared, firstly, a single modified polyvinyl chloride fiber filament is taken as a core wire, a single modified polysulfone amide fiber filament is spirally wound on the surface of the core wire to form an intermediate layer, the single modified polyphenylene sulfide fiber filament is continuously and tightly wound on the surface of the intermediate layer in the direction perpendicular to the core wire, and the single modified polysulfone amide fiber filament is spirally wound at intervals by means of adjustment of different winding directions, so that buffering is provided, stress dispersion is facilitated, and mechanical properties are improved; and the single modified polyphenylene sulfide fiber filament is tightly wound, so that the surface compactness is improved, and the mechanical property and weather resistance of the product are improved.
The polysulfone amide fiber filaments and the polyphenylene sulfide fiber filaments are modified before winding, and specifically, the surface of the fibers is treated by soybean peroxidase under the action of hydrogen peroxide, so that the surface performance of the fibers is optimized, the acting force between different fibers is stronger, the acting force between the composite yarns is stronger during spinning, and the mechanical property and durability of the obtained composite material are improved.
Detailed Description
The following description of the embodiments of the present invention will clearly and fully describe the technical aspects of the embodiments of the present invention, and it is apparent 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 present invention without making any inventive effort, are intended to fall within the scope of the present invention.
All goods in the invention are purchased through market channels unless specified otherwise.
Example 1
The preparation method of the high-strength blended composite material comprises the following specific steps:
(1) Firstly, modifying 2g of nano zirconia by using 3g of heptadecafluorodecyl trimethoxy silane to obtain modified nano zirconia, then mixing the modified nano zirconia with 20g of polyvinyl chloride to obtain a mixed material, continuously mixing the mixed material with 5g of fluororubber and 4g of nitrile rubber, finally adding 7g of plasticizer, 0.5g of stabilizer, 0.5g of lubricant and 0.5g of antioxidant, uniformly mixing, and carrying out melt spinning to obtain modified polyvinyl chloride fiber filaments;
(2) Under nitrogen atmosphere, 100g of dioxane, 4g of pH=5 phosphate buffer solution, 8g of methacrylic acid and 0.04g of soybean peroxidase are uniformly mixed to obtain treatment solution, 10g of polysulfone amide fiber filaments or polyphenylene sulfide fiber filaments are completely immersed in the treatment solution, heated to 35 ℃, slowly and uniformly dropwise added with 0.8g of 3% hydrogen peroxide solution (dropwise adding time is 10 minutes), kept for 2 hours after dropwise adding, taken out and washed with water to obtain modified polysulfone amide fiber filaments or modified polyphenylene sulfide fiber filaments.
(3) And then, taking a single modified polyvinyl chloride fiber filament as a core wire, spirally winding a single modified polysulfone amide fiber filament on the surface of the core wire to form an intermediate layer, continuously tightly winding a single modified polyphenylene sulfide fiber filament on the surface of the intermediate layer in a direction perpendicular to the core wire to obtain a composite yarn, and finally, weaving by using the composite yarn to obtain the blended composite material.
Wherein the weight average molecular weight of the polyvinyl chloride is 10 ten thousand, the weight average molecular weight of the fluororubber is 6 ten thousand, and the weight average molecular weight of the nitrile rubber is 60 ten thousand.
In the step (1), the specific method of the modification treatment is as follows: adding nano zirconia into heptadecafluorodecyl trimethoxy silane, stirring at 80 ℃ for reaction for 6 hours, and centrifuging to obtain precipitate.
The mixing process conditions are as follows: mixing at 150 ℃ for 5 minutes; the technological conditions for continuous mixing are as follows: mixing at 175 ℃ for 25 minutes; wherein dicumyl peroxide and triallyl isocyanurate are also added during continuous mixing, and the dosages of the dicumyl peroxide and triallyl isocyanurate are respectively 0.9 percent and 0.3 percent of the mass of the fluororubber.
The fluororubber is pre-vulcanized, and the specific method is as follows: fluororubber, bisphenol AF, benzyl triphenyl phosphorus chloride and magnesium oxide are mixed according to the mass ratio of 5:0.5:0.25:2.5 mixing, presulfiding at 165℃for 30 minutes.
The plasticizer is dioctyl phthalate, the stabilizer is organotin, the lubricant is glyceryl monostearate, and the antioxidant is pentaerythritol tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
Melt spinning is carried out by utilizing a screw extruder, and the process conditions are as follows: the temperature is 170 ℃, the rotating speed of the screw is 20r/min, and the spinning speed is 30m/min.
In the step (3), the fineness of the modified polyvinyl chloride fiber filaments, the modified polysulfone amide fiber filaments and the modified polyphenylene sulfide fiber filaments are respectively 100D, 70D and 50D.
In the step (3), the included angle between the spiral winding and the core wire is 35 degrees, and the winding interval is 0.5mm.
In the step (3), the weaving method is weaving, and the structural form is twill.
Example 2
The preparation method of the high-strength blended composite material comprises the following specific steps:
(1) Firstly, 3g of nano zirconia is modified by 5g of heptadecafluorodecyl trimethoxy silane to obtain modified nano zirconia, then the modified nano zirconia is mixed with 25g of polyvinyl chloride to obtain a mixed material, the mixed material is continuously mixed with 7g of fluororubber and 6g of nitrile rubber, and finally 9g of plasticizer, 0.7g of stabilizer, 0.7g of lubricant and 0.7g of antioxidant are added, uniformly mixed and melt-spun to obtain modified polyvinyl chloride fiber filaments;
(2) Under the nitrogen atmosphere, 100g of dioxane, 5g of pH=6 phosphate buffer solution, 10g of methacrylic acid and 0.05g of soybean peroxidase are uniformly mixed to obtain treatment liquid, then 12g of polysulfone amide fiber filaments or polyphenylene sulfide fiber filaments are completely immersed in the treatment liquid, heated to 40 ℃, 1g of 5% hydrogen peroxide solution with mass concentration is slowly and uniformly dripped (dripping time is 15 minutes), the temperature is kept for 3 hours after dripping is finished, and the modified polysulfone amide fiber filaments or the modified polyphenylene sulfide fiber filaments are obtained after water washing after being taken out.
(3) And then, taking a single modified polyvinyl chloride fiber filament as a core wire, spirally winding a single modified polysulfone amide fiber filament on the surface of the core wire to form an intermediate layer, continuously tightly winding a single modified polyphenylene sulfide fiber filament on the surface of the intermediate layer in a direction perpendicular to the core wire to obtain a composite yarn, and finally, weaving by using the composite yarn to obtain the blended composite material.
Wherein the weight average molecular weight of the polyvinyl chloride is 12 ten thousand, the weight average molecular weight of the fluororubber is 8 ten thousand, and the weight average molecular weight of the nitrile rubber is 70 ten thousand.
In the step (1), the specific method of the modification treatment is as follows: adding nano zirconia into heptadecafluorodecyl trimethoxy silane, stirring at 90 ℃ for reaction for 8 hours, and centrifuging to obtain precipitate.
The mixing process conditions are as follows: mixing at 160 ℃ for 7 minutes; the technological conditions for continuous mixing are as follows: mixing at 185 ℃ for 35 minutes; wherein dicumyl peroxide and triallyl isocyanurate are also added during continuous mixing, and the dosages of the dicumyl peroxide and triallyl isocyanurate are respectively 1 percent and 0.4 percent of the mass of the fluororubber.
The fluororubber is pre-vulcanized, and the specific method is as follows: fluororubber, bisphenol AF, benzyl triphenyl phosphorus chloride and magnesium oxide are mixed according to the mass ratio of 7:0.7:0.35:3.5 mixing, presulfiding at 175℃for 40 minutes.
The plasticizer is dioctyl phthalate, the stabilizer is organotin, the lubricant is glyceryl monostearate, and the antioxidant is pentaerythritol tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
Melt spinning is carried out by utilizing a screw extruder, and the process conditions are as follows: the temperature is 180 ℃, the rotating speed of the screw is 30r/min, and the spinning speed is 40m/min.
In the step (3), the fineness of the modified polyvinyl chloride fiber filaments, the modified polysulfone amide fiber filaments and the modified polyphenylene sulfide fiber filaments are respectively 200D, 80D and 60D.
In the step (3), the included angle between the spiral winding and the core wire is 45 degrees, and the winding interval is 0.7mm.
In the step (3), the weaving method is knitting, and the structural form is twill.
Example 3
The preparation method of the high-strength blended composite material comprises the following specific steps:
(1) Firstly, modifying 2.5g of nano zirconia by using 4g of heptadecafluorodecyl trimethoxy silane to obtain modified nano zirconia, then mixing the modified nano zirconia with 22g of polyvinyl chloride to obtain a mixed material, continuously mixing the mixed material with 6g of fluororubber and 5g of nitrile rubber, and finally adding 8g of plasticizer, 0.6g of stabilizer, 0.6g of lubricant and 0.6g of antioxidant, uniformly mixing, and carrying out melt spinning to obtain modified polyvinyl chloride fiber filaments;
(2) Under nitrogen atmosphere, 100g of dioxane, 4.5g of pH=5 phosphate buffer solution, 9g of methacrylic acid and 0.045g of soybean peroxidase are uniformly mixed to obtain treatment liquid, then 11g of polysulfone amide fiber filaments or polyphenylene sulfide fiber filaments are completely immersed in the treatment liquid, heated to 38 ℃, slowly and uniformly dropwise added with 0.9g of 4% hydrogen peroxide solution (dropwise adding time is 12 minutes), kept for 2.5 hours after dropwise adding, taken out and washed with water to obtain modified polysulfone amide fiber filaments or modified polyphenylene sulfide fiber filaments.
(3) And then, taking a single modified polyvinyl chloride fiber filament as a core wire, spirally winding a single modified polysulfone amide fiber filament on the surface of the core wire to form an intermediate layer, continuously tightly winding a single modified polyphenylene sulfide fiber filament on the surface of the intermediate layer in a direction perpendicular to the core wire to obtain a composite yarn, and finally, weaving by using the composite yarn to obtain the blended composite material.
Wherein the weight average molecular weight of the polyvinyl chloride is 11 ten thousand, the weight average molecular weight of the fluororubber is 7 ten thousand, and the weight average molecular weight of the nitrile rubber is 65 ten thousand.
In the step (1), the specific method of the modification treatment is as follows: adding nano zirconia into heptadecafluorodecyl trimethoxy silane, stirring at 85 ℃ for reaction for 7 hours, and centrifuging to obtain precipitate.
The mixing process conditions are as follows: mixing for 6 minutes at 155 ℃; the technological conditions for continuous mixing are as follows: mixing at 180 ℃ for 30 minutes; wherein dicumyl peroxide and triallyl isocyanurate are also added during continuous mixing, and the dosages of the dicumyl peroxide and triallyl isocyanurate are respectively 0.95 percent and 0.35 percent of the mass of the fluororubber.
The fluororubber is pre-vulcanized, and the specific method is as follows: fluororubber, bisphenol AF, benzyl triphenyl phosphorus chloride and magnesium oxide are mixed according to the mass ratio of 6:0.6:0.3:3 mixing, presulfiding at 170℃for 35 minutes.
The plasticizer is dioctyl phthalate, the stabilizer is organotin, the lubricant is glyceryl monostearate, and the antioxidant is pentaerythritol tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
Melt spinning is carried out by utilizing a screw extruder, and the process conditions are as follows: the temperature is 175 ℃, the rotating speed of the screw is 30r/min, and the spinning speed is 35m/min.
In the step (3), the fineness of the modified polyvinyl chloride fiber filaments, the modified polysulfone amide fiber filaments and the modified polyphenylene sulfide fiber filaments are respectively 150D, 70D and 60D.
In the step (3), the included angle between the spiral winding and the core wire is 40 degrees, and the winding interval is 0.6mm.
In the step (3), the weaving method is weaving, and the structural form is twill.
Comparative example
The preparation method of the blended composite material comprises the following specific steps:
(1) Under nitrogen atmosphere, 100g of dioxane, 4g of pH=5 phosphate buffer solution, 8g of methacrylic acid and 0.04g of soybean peroxidase are uniformly mixed to obtain treatment solution, 10g of polysulfone amide fiber filaments or polyphenylene sulfide fiber filaments are completely immersed in the treatment solution, heated to 35 ℃, slowly and uniformly dropwise added with 0.8g of 3% hydrogen peroxide solution (dropwise adding time is 10 minutes), kept for 2 hours after dropwise adding, taken out and washed with water to obtain modified polysulfone amide fiber filaments or modified polyphenylene sulfide fiber filaments.
(2) And then, taking a single polyvinyl chloride fiber filament as a core wire, spirally winding a single modified polysulfone amide fiber filament on the surface of the core wire to form an intermediate layer, continuously tightly winding a single modified polyphenylene sulfide fiber filament on the surface of the intermediate layer in a direction perpendicular to the core wire to obtain a composite yarn, and finally, weaving by using the composite yarn to obtain the blended composite material.
Wherein the weight average molecular weight of the polyvinyl chloride is 10 ten thousand, the weight average molecular weight of the fluororubber is 6 ten thousand, and the weight average molecular weight of the nitrile rubber is 60 ten thousand.
In the step (2), the fineness of the polyvinyl chloride fiber filaments, the modified polysulfone amide fiber filaments and the modified polyphenylene sulfide fiber filaments are respectively 100D, 70D and 50D.
In the step (2), the included angle between the spiral winding and the core wire is 35 degrees, and the winding interval is 0.5mm.
In the step (2), the weaving method is weaving, and the structural form is twill.
The properties of the composite materials obtained in examples 1 to 3 and comparative examples were examined, respectively.
Among them, tensile load was tested with reference to GB/T1040.3-2006.
Abrasion resistance, tested with reference to GB/T21196.2-2007; the friction load was (795.+ -.7) g (nominal pressure 12 kPa).
Corrosion resistance: taking 2mm multiplied by 2mm as a sample of the composite material, and carrying out a periodic infiltration accelerated corrosion test, wherein the test conditions are as follows: the surface change is observed by using a sodium chloride solution with the mass concentration of 2%, the temperature of 45 ℃, the humidity of 70% RH and the soaking time of 12 minutes, and each cycle period of 60 minutes and the cycle times of 100 times.
Anti-aging: the retention of tensile strength after ageing was calculated with reference to GB/T1040.1-2018 under heat ageing conditions of 150℃for 240 hours.
The test results are shown in Table 1.
TABLE 1 test results
As is clear from Table 1, the composite materials obtained in examples 1 to 3 have high tensile load, high number of abrasion resistance, good corrosion resistance, and high retention of tensile strength after aging, indicating good mechanical strength and durability.
The comparative example uses polyvinyl chloride fiber filaments to replace modified polyvinyl chloride fiber filaments, each performance is obviously deteriorated, and the modification treatment of polyvinyl chloride lays a good foundation for each performance of the product, and the mechanical strength and durability of the product are synergistically improved.
The technical idea of the present invention is described by the above embodiments, but the present invention is not limited to the above embodiments, that is, it does not mean that the present invention must be implemented depending on the above embodiments. It should be apparent to those skilled in the art that any modification of the present invention, equivalent substitution of individual raw materials for the product of the present invention, addition of auxiliary components, selection of specific modes, etc., falls within the scope of the present invention and the scope of disclosure.
Claims (7)
1. The preparation method of the high-strength blended composite material is characterized by comprising the following specific steps:
(1) Firstly, blending polyvinyl chloride, fluororubber, nitrile rubber and nano zirconia, and carrying out melt spinning to obtain modified polyvinyl chloride fiber filaments;
(2) Then, respectively carrying out surface modification treatment on the polysulfone amide fiber filaments and the polyphenylene sulfide fiber filaments to obtain modified polysulfone amide fiber filaments and modified polyphenylene sulfide fiber filaments;
(3) Then, taking a single modified polyvinyl chloride fiber filament as a core wire, spirally winding a single modified polysulfone amide fiber filament on the surface of the core wire to form an intermediate layer, continuously tightly winding a single modified polyphenylene sulfide fiber filament on the surface of the intermediate layer in a direction perpendicular to the core wire to obtain a composite yarn, and finally, weaving by using the composite yarn to obtain the blended composite material;
the specific method of the step (1) comprises the following steps of: firstly, carrying out modification treatment on 2-3 parts of nano zirconia by 3-5 parts of heptadecafluorodecyl trimethoxy silane to obtain modified nano zirconia, then mixing the modified nano zirconia with 20-25 parts of polyvinyl chloride to obtain a mixed material, continuously mixing the mixed material with 5-7 parts of fluororubber and 4-6 parts of nitrile rubber, and finally adding 7-9 parts of plasticizer, 0.5-0.7 part of stabilizer, 0.5-0.7 part of lubricant and 0.5-0.7 part of antioxidant, uniformly mixing, and carrying out melt spinning to obtain the modified nano zirconia;
the specific method of the step (2) is as follows in parts by weight: firstly, uniformly mixing 100 parts of dioxane, 4-5 parts of pH=5-6 phosphate buffer solution, 8-10 parts of methacrylic acid and 0.04-0.05 part of soybean peroxidase in a nitrogen atmosphere to obtain a treatment solution, then completely immersing 10-12 parts of polysulfone amide fiber filaments or polyphenylene sulfide fiber filaments in the treatment solution, heating to 35-40 ℃, slowly and uniformly dropwise adding 0.8-1 part of 3-5 mass percent hydrogen peroxide solution, preserving heat for 2-3 hours after dropwise adding, taking out and washing to obtain modified polysulfone amide fiber filaments or modified polyphenylene sulfide fiber filaments.
2. The method according to claim 1, wherein the polyvinyl chloride has a weight average molecular weight of 10 to 12 ten thousand, the fluororubber has a weight average molecular weight of 6 to 8 ten thousand, and the nitrile rubber has a weight average molecular weight of 60 to 70 ten thousand.
3. The preparation method according to claim 1, wherein the specific method of the modification treatment is: adding nano zirconia into heptadecafluorodecyl trimethoxy silane, stirring at 80-90 ℃ for reaction for 6-8 hours, and centrifuging to obtain precipitate.
4. The method according to claim 1, wherein in the step (3), the fineness of the modified polyvinyl chloride fiber filaments, the modified polysulfone amide fiber filaments and the modified polyphenylene sulfide fiber filaments is 100 to 200D, 70 to 80D and 50 to 60D, respectively.
5. The method according to claim 1, wherein in the step (3), the included angle between the spiral winding and the core wire is 35 to 45 degrees, and the winding interval is 0.5 to 0.7mm.
6. The method of claim 1, wherein in step (3), the weaving process is weaving, knitting or braiding, and the structural form is twill.
7. A high strength blended composite material obtained by the method of any one of claims 1 to 6.
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