CN115042488B - Ultrathin backboard and preparation method thereof - Google Patents
Ultrathin backboard and preparation method thereof Download PDFInfo
- Publication number
- CN115042488B CN115042488B CN202210654303.XA CN202210654303A CN115042488B CN 115042488 B CN115042488 B CN 115042488B CN 202210654303 A CN202210654303 A CN 202210654303A CN 115042488 B CN115042488 B CN 115042488B
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- China
- Prior art keywords
- polycarbonate
- silica gel
- composite material
- parts
- glass fiber
- Prior art date
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- 238000002360 preparation method Methods 0.000 title claims abstract description 52
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 125
- 239000004417 polycarbonate Substances 0.000 claims abstract description 125
- 239000002131 composite material Substances 0.000 claims abstract description 91
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 82
- 239000003365 glass fiber Substances 0.000 claims abstract description 70
- 239000000741 silica gel Substances 0.000 claims abstract description 65
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 65
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 15
- 239000003054 catalyst Substances 0.000 claims description 41
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 33
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 claims description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 25
- 229910021389 graphene Inorganic materials 0.000 claims description 25
- 238000003756 stirring Methods 0.000 claims description 23
- 239000012783 reinforcing fiber Substances 0.000 claims description 20
- -1 polytetrafluoroethylene Polymers 0.000 claims description 18
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 17
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 17
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 16
- 229960003638 dopamine Drugs 0.000 claims description 15
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 14
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 13
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 12
- 230000003197 catalytic effect Effects 0.000 claims description 11
- VZHHNBNSMNNUAD-UHFFFAOYSA-N cobalt 2-[2-[(2-hydroxyphenyl)methylideneamino]ethyliminomethyl]phenol Chemical compound [Co].OC1=CC=CC=C1C=NCCN=CC1=CC=CC=C1O VZHHNBNSMNNUAD-UHFFFAOYSA-N 0.000 claims description 11
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 10
- 229920001410 Microfiber Polymers 0.000 claims description 10
- 239000003658 microfiber Substances 0.000 claims description 10
- 239000012188 paraffin wax Substances 0.000 claims description 10
- 239000012744 reinforcing agent Substances 0.000 claims description 10
- 239000012065 filter cake Substances 0.000 claims description 9
- 150000003961 organosilicon compounds Chemical class 0.000 claims description 9
- 235000012239 silicon dioxide Nutrition 0.000 claims description 9
- 239000011787 zinc oxide Substances 0.000 claims description 9
- 239000005543 nano-size silicon particle Substances 0.000 claims description 8
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 8
- 150000002910 rare earth metals Chemical class 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 7
- 239000001569 carbon dioxide Substances 0.000 claims description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 6
- HQWPLXHWEZZGKY-UHFFFAOYSA-N diethylzinc Chemical compound CC[Zn]CC HQWPLXHWEZZGKY-UHFFFAOYSA-N 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000004973 liquid crystal related substance Substances 0.000 claims description 6
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 6
- 239000012265 solid product Substances 0.000 claims description 6
- YNJBWRMUSHSURL-UHFFFAOYSA-N trichloroacetic acid Chemical compound OC(=O)C(Cl)(Cl)Cl YNJBWRMUSHSURL-UHFFFAOYSA-N 0.000 claims description 6
- RVWNYZJHPROKTC-UHFFFAOYSA-K 2,2,2-trichloroacetate yttrium(3+) Chemical compound [Y+3].[O-]C(=O)C(Cl)(Cl)Cl.[O-]C(=O)C(Cl)(Cl)Cl.[O-]C(=O)C(Cl)(Cl)Cl RVWNYZJHPROKTC-UHFFFAOYSA-K 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 5
- 239000005373 porous glass Substances 0.000 claims description 4
- 239000003921 oil Substances 0.000 claims description 3
- 238000009210 therapy by ultrasound Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 17
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 41
- 230000000694 effects Effects 0.000 description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 9
- 238000001035 drying Methods 0.000 description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 7
- 238000004132 cross linking Methods 0.000 description 7
- 239000006185 dispersion Substances 0.000 description 7
- 229910052709 silver Inorganic materials 0.000 description 7
- 239000004332 silver Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 238000009832 plasma treatment Methods 0.000 description 6
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- 239000007788 liquid Substances 0.000 description 5
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- 238000012360 testing method Methods 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 235000011187 glycerol Nutrition 0.000 description 4
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- SSJXIUAHEKJCMH-PHDIDXHHSA-N (1r,2r)-cyclohexane-1,2-diamine Chemical compound N[C@@H]1CCCC[C@H]1N SSJXIUAHEKJCMH-PHDIDXHHSA-N 0.000 description 3
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 3
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 3
- 229910052582 BN Inorganic materials 0.000 description 3
- 239000006087 Silane Coupling Agent Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000001066 destructive effect Effects 0.000 description 3
- 239000003623 enhancer Substances 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
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- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 2
- QKNYBSVHEMOAJP-UHFFFAOYSA-N 2-amino-2-(hydroxymethyl)propane-1,3-diol;hydron;chloride Chemical compound Cl.OCC(N)(CO)CO QKNYBSVHEMOAJP-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical group [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000002649 leather substitute Substances 0.000 description 2
- 239000003446 ligand Substances 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229920001690 polydopamine Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- RQBWMLFHMVFSBS-UHFFFAOYSA-N 2,4-dinitrophenol;sodium Chemical compound [Na].OC1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O RQBWMLFHMVFSBS-UHFFFAOYSA-N 0.000 description 1
- RMBFBMJGBANMMK-UHFFFAOYSA-N 2,4-dinitrotoluene Chemical compound CC1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O RMBFBMJGBANMMK-UHFFFAOYSA-N 0.000 description 1
- RRIQVLZDOZPJTH-UHFFFAOYSA-N 3,5-di-tert-butyl-2-hydroxybenzaldehyde Chemical compound CC(C)(C)C1=CC(C=O)=C(O)C(C(C)(C)C)=C1 RRIQVLZDOZPJTH-UHFFFAOYSA-N 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 235000009161 Espostoa lanata Nutrition 0.000 description 1
- 240000001624 Espostoa lanata Species 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
- BGULNPVMQAPGLT-UHFFFAOYSA-N [Cl-].[NH4+].C1(=CC=CC=C1)P(C1=CC=CC=C1)C1=CC=CC=C1.C1(=CC=CC=C1)P(C1=CC=CC=C1)C1=CC=CC=C1 Chemical compound [Cl-].[NH4+].C1(=CC=CC=C1)P(C1=CC=CC=C1)C1=CC=CC=C1.C1(=CC=CC=C1)P(C1=CC=CC=C1)C1=CC=CC=C1 BGULNPVMQAPGLT-UHFFFAOYSA-N 0.000 description 1
- VVTSZOCINPYFDP-UHFFFAOYSA-N [O].[Ar] Chemical compound [O].[Ar] VVTSZOCINPYFDP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006177 biological buffer Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229940011182 cobalt acetate Drugs 0.000 description 1
- QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical compound [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- CPSYWNLKRDURMG-UHFFFAOYSA-L hydron;manganese(2+);phosphate Chemical compound [Mn+2].OP([O-])([O-])=O CPSYWNLKRDURMG-UHFFFAOYSA-L 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- 239000011656 manganese carbonate Substances 0.000 description 1
- 235000006748 manganese carbonate Nutrition 0.000 description 1
- 229940093474 manganese carbonate Drugs 0.000 description 1
- RGVLTEMOWXGQOS-UHFFFAOYSA-L manganese(2+);oxalate Chemical compound [Mn+2].[O-]C(=O)C([O-])=O RGVLTEMOWXGQOS-UHFFFAOYSA-L 0.000 description 1
- 229910000016 manganese(II) carbonate Inorganic materials 0.000 description 1
- XMWCXZJXESXBBY-UHFFFAOYSA-L manganese(ii) carbonate Chemical compound [Mn+2].[O-]C([O-])=O XMWCXZJXESXBBY-UHFFFAOYSA-L 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 description 1
- 238000006772 olefination reaction Methods 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000037048 polymerization activity Effects 0.000 description 1
- 229920000379 polypropylene carbonate Polymers 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000006557 surface reaction Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- ZFQAUDJGELQDAN-UHFFFAOYSA-L zinc;2,2,2-trichloroacetate Chemical compound [Zn+2].[O-]C(=O)C(Cl)(Cl)Cl.[O-]C(=O)C(Cl)(Cl)Cl ZFQAUDJGELQDAN-UHFFFAOYSA-L 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
- B32B27/283—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polysiloxanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
- B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2427/18—Homopolymers or copolymers of tetrafluoroethylene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2479/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2461/00 - C08J2477/00
- C08J2479/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
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- C—CHEMISTRY; METALLURGY
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Abstract
The application relates to the field of backboard materials, and particularly discloses an ultrathin backboard and a preparation method thereof. An ultrathin backboard comprises a silica gel layer, a reinforcing layer and a Polycarbonate (PC) layer which are sequentially arranged from top to bottom, wherein the reinforcing layer is made of a composite material, and the composite material comprises glass fibers. The preparation method comprises the following steps: s1, premixing raw materials; s2, preparing a composite material; s3, preparing the backboard. The ultrathin backboard can be used in the fields of mobile phone backboard and the like, and has the advantages of high strength, difficult fracture, difficult stain adhesion and the like.
Description
Technical Field
The application relates to the field of mobile phone back plates, in particular to an ultrathin back plate and a preparation method thereof.
Background
The mobile phone is an indispensable product in the current life of people, and as time progresses, the touch screen mobile phone has developed to date, and the use feeling of mobile phone users is considered more, so that the mobile phone has developed towards the directions of light weight, curved surface screen and the like. In order to make the mobile phone light and thin, it is a feasible direction to reduce the weight of the back plate.
At present, the material of the mobile phone backboard is generally glass, PC paint, PC+PU synthetic leather and the like, wherein the glass has the defects of being too heavy and too thick, but the mobile phone is pursued of light weight and thinning of the body; as a traditional material, PC paint is difficult to innovate; in recent three years, PC+PU synthetic leather has emerged as a new product of the back plate, and various large mobile phone factories have use, but the disadvantages are that: in the use process, PU is easy to age, skin falling frequently occurs, and dirty materials are difficult to clean.
For the above related art, the inventor considers that the conventional materials are used to prepare the back plate, and the back plate still has the problems of easy dirt, easy aging, heavy mass and thick thickness, so that in order to make the mobile phone thin and thin, the back plate needs to be made thin, and the back plate is easy to break due to poor strength of the back plate material, namely, the back plate has the defects of poor strength and short service life.
Disclosure of Invention
In order to overcome the defects of poor strength and short service life of the back plate, the application provides an ultrathin back plate and a preparation method thereof.
In a first aspect, the present application provides an ultrathin backboard, which adopts the following technical scheme:
an ultrathin backboard comprises a silica gel layer, a reinforcing layer and a polycarbonate layer which are sequentially arranged from top to bottom, wherein the reinforcing layer is made of a composite material, and the composite material comprises glass fibers.
By adopting the technical scheme, the glass fiber is preferably used as the reinforcing layer in the technical scheme, the glass fiber has lighter weight and better strength, and the glass fiber can be used for pulling the polycarbonate layer and the silica gel layer, so that the bonding strength between the components of the back plate is improved, the strength of the back plate can be effectively improved, and the weight of the back plate is reduced.
And secondly, the silica gel layer is used as the surface layer of the backboard, and has lower surface energy, so that the surface of the backboard is smooth and is not easy to react with other materials, and dirt attached to the backboard is cleaned. And the silica gel layer is an organic silicon layer, so that the organic silicon is not easy to age, and the service life of the backboard can be effectively prolonged.
The ultrathin backboard comprises the following components in parts by weight: 5-10 parts of organosilicon compound, 3-5 parts of reinforcing fiber and 20-40 parts of polycarbonate, wherein the polycarbonate comprises polycarbonate modified by silica gel, the reinforcing fiber comprises liquid crystal microfiber, and the glass fiber is porous glass fiber.
By adopting the technical scheme, firstly, the organic silicon compound and the polycarbonate are added into the composite material, so that the glass fiber can be bonded, the compactness of the reinforcing layer is improved, and the strength of the reinforcing layer is further improved. Moreover, through similar compatibility principle, can effectively improve the bonding effect between enhancement layer and the polycarbonate layer, enhancement layer and the silica gel layer, effectively improve the intensity of backplate.
In the technical scheme, the organosilicon compound is preferably added into the polycarbonate, a large amount of silver grains are formed in the polycarbonate, and the shearing yield belt is formed, so that the shearing yield belt can prevent and delay cracking of cracks, inhibit the conversion of the cracks into destructive cracks, improve the toughness of the composite material and reduce the possibility of fracture of the backboard under impact.
Meanwhile, the organosilicon compound can form graded particles in the polycarbonate, so that critical intervals among the particles are shortened, silver marks generated by impact of the composite material can be absorbed, the possibility that the silver marks develop into destructive cracks is reduced, and the toughness and strength of the composite material are effectively improved.
And thirdly, glass fibers are added into the polycarbonate, the glass fibers can be dispersed into the polycarbonate, a cross-linked structure is formed in the polycarbonate, the strength and crack resistance of the polycarbonate are enhanced through entanglement and traction, the possibility of cracking of the back plate is reduced, the glass fibers have certain strength and light weight, the thickness of the back plate of the mobile phone can be effectively reduced, the strength is maintained, and the development requirement of lightening and thinning of the mobile phone is met. The surface porous structure of the porous glass fiber effectively enhances the bonding effect between the glass fiber and the polycarbonate.
Through the cooperation of glass fiber and microcrystalline microfiber, microcrystalline microfiber can promote the rheological property of polycarbonate shear thinning, improves the mobility of molten polycarbonate for glass fiber and microcrystalline microfiber can evenly disperse in the polycarbonate, and microcrystalline microfiber has high modulus, can reduce glass fiber's breaking rate, and consequently glass fiber and microcrystalline fiber can be effectively tangled and the reinforcing polycarbonate.
Finally, in the technical scheme of the application, the polycarbonate is modified by adopting the silica gel, and the polycarbonate is filled by the cross-linked framework in the silica gel, so that the degree of compactness of the cross-linking in the polycarbonate is improved, and the strength of the polycarbonate is further improved.
Preferably, the composite material further comprises one or two of paraffin and graphene, wherein the graphene is surface-functionalized graphene.
Through adopting above-mentioned technical scheme, at first, add paraffin in the combined material, because paraffin self lubrication characteristic, can wrap up and lubricate the reinforcing fiber in the combined material, further improved the dispersion effect of reinforcing fiber in the polycarbonate to paraffin has better film forming effect, can form the rete on the combined material surface, is difficult for adhering to dirty when making combined material obtain smooth feel.
And secondly, graphene is added into the composite material, the graphene is of a two-dimensional lamellar structure, and after the graphene and the polycarbonate are mixed in a melting way, a continuous interface layer can be formed in the polycarbonate, so that the strength of the polycarbonate is further improved. The graphene is subjected to surface functionalization modification, so that the graphene can be wrapped and loaded on the reinforcing fiber, and can lubricate the molecular chain segment in the polycarbonate, when the graphene is subjected to impact force, the impact force can be dispersed on the molecular chain segment, and the toughness of the reinforcing material and the polycarbonate is improved.
Finally, the graphene and the paraffin are added into the composite material in a matching way, so that the molecular chain segments in the reinforced fiber and the polycarbonate can be effectively lubricated, the dispersion uniformity of the reinforced fiber in the polycarbonate is improved, and the polycarbonate can obtain uniform strength. In addition, the bonding strength between the reinforcing fiber and the polycarbonate can be adjusted, each component in the polycarbonate can be stably pulled, and meanwhile, molecular chains in the polycarbonate can also slide and disperse when the polycarbonate is subjected to impact force, so that the high-toughness and high-strength composite material is obtained.
Preferably, the glass fibers are glass fibers reinforced with a reinforcing agent, the reinforcing agent comprising polytetrafluoroethylene.
By adopting the technical scheme, polytetrafluoroethylene is preferably adopted to strengthen and modify the glass fiber in the technical scheme, and the polytetrafluoroethylene can form a coating film structure on the surface of the glass fiber, so that on one hand, the inner wall of a pore on the glass fiber can be covered and supported, the strength of the glass fiber is improved, on the other hand, the glass fiber is enabled to obtain a hydrophobic/oleophobic surface, the possibility of aggregation of the glass fiber is reduced, the dispersion effect of the glass fiber in the composite material is further improved, and therefore, the composite material obtains uniform strength.
Preferably, the enhancer further comprises any one of nano boron nitride, nano silicon dioxide and nano zinc oxide, and the enhancer further comprises dopamine.
Through adopting above-mentioned technical scheme, adopt nanometer boron nitride, dopamine and polytetrafluoroethylene cooperation as the reinforcing agent, dopamine can take place from the polymerization on glass fiber and form polydopamine, and catechol and quinone in polydopamine can be as covalent bond structure between functional group and the glass fiber, need not to carry out surface pretreatment to glass fiber, can form firm bonding adsorbed layer on glass fiber surface, improves the bonding strength of reinforcing agent on glass fiber surface. Under the absorption of the dopamine adsorption layer, polytetrafluoroethylene and nanometer boron nitride can be firmly loaded on the glass fiber, and the nanometer boron nitride can be adsorbed on the glass fiber to support the inner walls of the pores of the glass fiber, so that the strength of the glass fiber is further improved, the heat conduction effect of the glass fiber is enhanced, and the heat dissipation effect of the composite material and the back plate is improved.
Secondly, nano silicon dioxide or nano zinc oxide is added into the reinforcing agent, so that the nano silicon dioxide or nano zinc oxide can be deposited on the surface of the glass fiber, and the strength of the glass fiber is effectively enhanced.
Preferably, the preparation of the silica gel modified polycarbonate comprises the following steps: according to the weight portion, 5-6 portions of silica gel, 1.5-2.5 portions of catalyst, 1.5-2 portions of cocatalyst and 20-30 portions of propylene oxide are respectively taken, the silica gel is placed in an autoclave, the catalyst and the cocatalyst are sequentially added into the autoclave, the propylene oxide is added into the autoclave under the nitrogen atmosphere, high-purity carbon dioxide is added, the oil bath is heated, the magnetic stirring reaction is carried out, the solid product is obtained, the solid product is dissolved in dichloromethane, the filtration is carried out, the filter cake is reserved, the filter cake is dissolved in dichloromethane again, the ultrasonic treatment is carried out, and the solvent is removed under reduced pressure, thus obtaining the polycarbonate modified by the silica gel.
Through adopting above-mentioned technical scheme, under the catalytic action of catalyst, the active group on silica gel surface can initiate carbon dioxide and propylene oxide and copolymerize in turn, can form polycarbonate-silica gel composite structure, and the silicon dioxide in the silica gel of parcel and the molecular chain in the polycarbonate intertwine each other, crisscross network structure of formation consequently forms braced skeleton in combined material, effectively improves combined material's intensity. Meanwhile, the particle structure of the polycarbonate modified by the silica gel is that the polycarbonate is coated outside the silica gel, and the polycarbonate can be grafted with the polypropylene carbonate and can interact with hydroxyl groups between the silica gel, so that the crosslinking compactness degree in the polycarbonate is increased.
Preferably, the catalyst comprises a Salen Co (III) catalyst and a rare earth-supported three-way catalyst, and the rare earth-supported three-way catalyst comprises the following preparation steps: respectively weighing 3-5 parts of trichloroacetic acid, 1-2 parts of yttrium oxide, 2-4 parts of propylene oxide, 1-3 parts of diethyl zinc, 1-2 parts of glycerol and 0.5-2 parts of silica gel according to parts by weight, stirring and mixing the trichloroacetic acid and the yttrium oxide, continuously reacting, and vacuum drying to obtain yttrium trichloroacetate; and (3) reacting yttrium trichloroacetate with propylene oxide in a nitrogen atmosphere, adding glycerol, stirring and mixing, dropwise adding diethyl zinc, stirring and mixing to obtain a catalytic component, and mixing the catalytic component with silica gel to obtain the rare earth-loaded ternary catalyst, wherein the silica gel is aluminum nitrate modified silica gel.
By adopting the technical scheme, the alternating grafting of carbon dioxide and propylene oxide on silica gel can be effectively promoted by the coordination between the Salen Co (III) catalyst and the rare earth-loaded ternary catalyst. According to the technical scheme, the proportion of each component of the rare earth-loaded three-way catalyst is optimized, so that the formed three-way catalyst catalytic system center is provided with zinc atoms with strong electron deficiency, ring opening of propylene oxide is facilitated, the reaction of carbon dioxide and propylene oxide is promoted, the polymerization activity is improved, and the catalytic activity of the catalyst is enhanced. Silica gel is used as a carrier of the three-way catalyst, and aluminum nitrate modification is carried out on the silica gel, so that strong Lewis acidic sites are obtained on the surface of the silica gel, the silica gel can interact with active metal zinc centers in the three-way catalyst, the electron cloud density of the three-way catalyst is reduced, and the catalytic activity of the catalyst is further improved.
Preferably, the polycarbonate further comprises an ion-implanted polycarbonate, the ion-implanted polycarbonate comprising any one of B +、O+.
By adopting the technical scheme, B + or O + ions are injected into the polycarbonate, and the ions affect the branched chains of the polycarbonate, so that the branched chains of the polycarbonate can be crosslinked, the hardness of the polycarbonate is increased, the skeleton structure of the polycarbonate is firm, and the wear resistance of the polycarbonate can be effectively improved.
In a second aspect, the present application provides a method for preparing an ultrathin backboard, which adopts the following technical scheme:
the preparation method of the ultrathin backboard comprises the following steps: s1, premixing raw materials: weighing the organosilicon compound, the reinforcing fiber and the polycarbonate according to the formula, and stirring and mixing to obtain a premix; s2, preparing a composite material: adding the premix into an extruder, carrying out melt extrusion and modeling to obtain a composite material; s3, preparing a backboard: and (3) laminating and bonding the composite material and the PC board to obtain a composite board, coating silica gel on the composite board, and drying to obtain the backboard.
By adopting the technical scheme, the raw materials are mixed in advance, the reinforcing fiber and the silicon-containing compound are dispersed in the polycarbonate in advance, and then the melt extrusion is carried out, so that the dispersion effect of the reinforcing fiber in the polycarbonate can be improved, and the polycarbonate can obtain uniform strength.
Preferably, the composite board is subjected to surface treatment, and the surface treatment comprises the following steps: and cleaning the surface of the composite board by using absolute ethyl alcohol, drying by using nitrogen, and placing the composite board into a vacuum chamber for plasma treatment, wherein the time of the plasma treatment is controlled to be 2.5-4min.
By adopting the technical scheme, the surface of the composite board is cleaned at first, and the influence of impurities on the surface of the composite board on subsequent treatment is reduced. The composite board is bombarded by plasma, and the impact of particle beams can induce the non-crosslinked molecular chains of the polycarbonate to crosslink to form a netlike crosslinked layer, so that the surface hardness of the polycarbonate can be enhanced, and the hardness and the wear resistance of the composite board are improved. Meanwhile, the technical scheme of the application optimizes the time of plasma treatment, regulates and controls the surface effect of the plasma on the polycarbonate, reduces the possibility of sputtering and etching treatment of the plasma on the surface of the composite board, and enables the composite board to obtain excellent strength.
In summary, the application has the following beneficial effects:
1. Through silica gel layer, enhancement layer and polycarbonate layer multilayer complex as the backplate, because the silica gel layer has low surface energy and surperficial smooth characteristic for be difficult for remaining the spot on the backplate, and glass fiber is as the addition of enhancement layer, through glass fiber's effect of pulling, can improve the bonding strength between enhancement layer and silica gel layer, enhancement layer and the polycarbonate layer, improve the intensity, the toughness of backplate and alleviate the weight of backplate.
2. According to the application, the organosilicon compound is added into the polycarbonate, so that silver grains and a shearing yield zone are formed in the composite material, the toughness of the composite material is improved in a matching way, and the silver grains generated by impact of the composite material can be absorbed by adjusting the critical spacing between particles, so that the development of the silver grains towards destructive cracks is hindered, and the strength and toughness of the composite material are improved; by adding the glass fiber and the liquid crystal microfiber, not only can the traction of each component in the polycarbonate be enhanced through a fiber structure, but also the rheological property of shearing olefination of the polycarbonate can be obtained, the dispersion effect of the reinforced fiber in the polycarbonate is improved, and the composite material can obtain uniform strength and toughness; and finally, the polycarbonate is filled by adopting a skeleton structure of silica gel, so that the crosslinking density in the composite material is improved, the strength and toughness of the composite material are effectively improved, the service life of the mobile phone backboard is prolonged, and the weight of the backboard is reduced.
3. According to the application, the glass fiber is preferably reinforced by adopting the cooperation of dopamine, nano boron nitride, nano silicon dioxide, nano zinc oxide and polytetrafluoroethylene, and the dopamine can form a wrapping adsorption layer on the glass fiber, so that any one of the nano boron nitride, nano silicon dioxide and nano zinc oxide is firmly loaded on the glass fiber, the strength of the glass fiber is effectively enhanced, the glass fiber is not easy to agglomerate by adding the polytetrafluoroethylene, and the free effect of the glass fiber in the polycarbonate is improved, so that the composite material can obtain uniform and stable strength, the backboard is not easy to receive impact damage, and the service life of the backboard is effectively prolonged.
4. According to the method disclosed by the application, the surface plasma treatment is carried out on the composite board, so that the cross-linking is induced in the composite material to form a compact cross-linking structure, and therefore, the surface hardness of the composite board is improved, the back board is not easy to grind, and the service life and the use effect of the back board are prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a back plate according to the present application.
Reference numerals
1. A PC layer; 2. a reinforcing layer; 3. and a silica gel layer.
Detailed Description
The present application will be described in further detail with reference to examples.
In the embodiment of the application, the selected instrument medicines are shown as follows, but not limited to:
instrument: TY-7009P type double screw extruder of Jiangsu Tianyuan test equipment Co., ltd.
Medicine: the biological buffer Tris-HCl of Sank material science, inc. of Sank, hubei is silica gel of Grace, america.
Preparation example
Preparation of glass fibers
Preparation example 1
5Kg of chopped porous glass fiber was taken as glass fiber 1.
Preparation example 2
5Kg of chopped glass fibers were taken as glass fibers 2.
Preparation example 3
The chopped glass fibers are immersed in polytetrafluoroethylene dispersion liquid, stirred and mixed, immersed for 1h, filtered, solid matters are reserved, water-based and dried, and the reinforced glass fibers 1 are obtained.
Preparation examples 4 to 6
Polytetrafluoroethylene, nano boron nitride, nano silicon dioxide, nano zinc oxide and dopamine are respectively weighed, and the specific mass is shown in table 1.
Mixing dopamine with water to obtain a dopamine solution with the mass fraction of 0.2%, regulating the pH value of the dopamine solution to 8.5 by adopting a buffer Tris-HCl, placing the glass fiber into the dopamine solution, magnetically stirring, reacting at room temperature for 24 hours, filtering, retaining solid matters, washing with water for 4 times, and drying at 60 ℃ to obtain the primary modified glass fiber. Taking dopamine solution, nano-dioxide, nano-zinc oxide, nano-boron nitride and polytetrafluoroethylene, stirring and mixing, adding the glass fiber modified at one time, stirring and reacting for 1h, centrifugally separating, washing with water, and obtaining the glass fiber 2-4 reinforced and modified by the reinforcing agent.
TABLE 1 preparation examples 4-6 enhancer composition
Graphene preparation example
Preparation example 7
2Kg of graphene microplates were taken as graphene 1.
Preparation example 8
2Kg of graphene oxide, 5kg of dimethylformamide and 2kg of hexamethylenediamine are respectively taken, the graphene oxide is dissolved in the dimethylformamide, stirring is carried out for 1h at normal temperature, hexamethylenediamine is added, reflux reaction is carried out for 12h at 60 ℃, ethanol is used for washing for 5 times for removing impurities, and vacuum drying is carried out at 80 ℃ to obtain graphene with functionalized surface as graphene 2.
Preparation of reinforcing fibers
Preparation examples 9 to 11
Glass fiber 1 and liquid crystal microfiber are weighed respectively, the specific mass is shown in table 2, and the glass fiber 1 and the liquid crystal microfiber are stirred and mixed to obtain reinforced fibers 1-3. Wherein the liquid crystal microfiber is random copolymerized PHB/PET (60/40) of hydroxybenzoic acid (PHB) and polyethylene terephthalate, and the melting point is 190 ℃.
TABLE 2 preparation examples 9-11 reinforcing fiber compositions
Preparation examples 12 to 16
The difference from preparation example 6 is that: instead of glass fiber 1 in preparation example 6, glass fiber 2 and reinforcement-treated glass fibers 1 to 4 were used to prepare reinforcement fibers 4 to 8.
Preparation of polycarbonate
Preparation example 17
An ion implanter was used to implant 5X 10 15cm-2 O + with an energy of 200keV into the polycarbonate, the target surface was perpendicular to the direction of the particle beam, and the ion-implanted polycarbonate 1 was obtained by room temperature implantation.
PREPARATION EXAMPLE 18
The difference from preparation example 17 is that: ion implantation of B + was performed instead of O + in preparation example 17, to prepare ion-implanted polycarbonate 2.
Catalyst preparation example
Preparation examples 19 to 21
Trichloroacetic acid, yttrium oxide, propylene oxide, diethyl zinc, glycerol and silica gel were weighed separately and the specific mass is shown in table 3.
Soaking silica gel in aluminum nitrate, stirring at 120 ℃ for 12 hours to obtain dry solid, dehydrating at 200 ℃ in a roasting furnace for 1 hour, and heating to 600 ℃ and keeping for 4 hours to obtain the silica gel modified by aluminum nitrate.
Mixing trichloroacetic acid and yttrium oxide under stirring, continuously reacting for 5h at 50 ℃, and vacuum drying for 6h at 100 ℃ to obtain the yttrium trichloroacetate. Zinc trichloroacetate and propylene oxide are reacted for 1h under the nitrogen atmosphere, glycerin is added, stirring and mixing are carried out, diethyl zinc is added dropwise, stirring is continued, and reaction is carried out for 30min, thus obtaining the catalytic component. And mixing the catalytic component with silica gel to obtain the rare earth-loaded three-way catalyst 1-3.
TABLE 3 preparation examples 19-21 catalyst compositions
PREPARATION EXAMPLE 22
Salen Co (III) catalyst preparation: taking 1.64kg of (R, R) -1, 2-cyclohexanediamine, 1.74kg of potassium carbonate with the mass fraction of 98.5% and 8kg of water, stirring and dissolving, adding 32kg of ethanol, heating and refluxing, taking 2.95kg of 3, 5-di-tert-butyl salicylaldehyde and 13kg of ethanol to obtain a mixed solution, dripping the mixed solution, continuously heating and refluxing for 2 hours, adding 8.5kg of water, continuously stirring, cooling, suction filtering, retaining a filter cake, adopting dichloromethane to dissolve the filter cake, washing with water and saturated saline in sequence, layering, retaining an organic phase, drying with anhydrous sodium sulfate, decompressing and removing a solvent, and recrystallizing to obtain the ligand.
0.5Kg of ligand and 1kg of methylene chloride were mixed to obtain a base material. Mixing 0.24kg of anhydrous cobalt acetate and 5kg of methanol to obtain an intermediate solution, dripping the intermediate solution into a base material, stirring and reacting for 1h, protecting with nitrogen, performing filter pressing and desolventizing, retaining a filter cake, and washing the methanol until the filtrate is colorless to obtain the complex. 0.12kg of the complex is dissolved in 1.5kg of methylene chloride to obtain a primary liquid, and 0.0368kg of 2, 4-dinitrotoluene and 1.5kg of methylene chloride are mixed to obtain a secondary liquid. Adding the secondary liquid into the primary liquid, introducing oxygen, stirring at room temperature for 60min, removing the solvent in vacuum to obtain a crude product, recrystallizing with diethyl ether and n-hexane, and vacuum drying at 60 ℃ for 24h to obtain the Salen Co (III) catalyst.
Wherein the (R, R) -1, 2-cyclohexanediamine is (R, R) -1, 2-cyclohexanediamine of Shenyang Jin Jiuji company.
Preparation example 23
Preparation of a cocatalyst: under nitrogen atmosphere, 0.3444kgPPNCl is dissolved in 5kg of dichloromethane, 0.123kg of 2, 4-dinitrophenol sodium is added, stirring is carried out for 24h at room temperature, sodium chloride is filtered off with suction, filtrate is concentrated, 5kg of dry diethyl ether is added, yellow powder is separated out, filtering is carried out, solid is reserved, and drying is carried out for 24h at 50 ℃ to obtain the cocatalyst.
PPNCl is bis (triphenylphosphine) ammonium chloride from the company Wuhan Kang Qiong biomedical technology.
PREPARATION EXAMPLE 24
0.2KgSalen Co (III) of catalyst and 0.2kg of ternary catalyst 1 loaded with rare earth are taken and stirred and mixed to prepare the catalyst 1.
PREPARATION EXAMPLES 25 to 26
The difference from preparation example 24 is that: instead of the rare earth-supported three-way catalyst 1 in preparation example 24, a rare earth-supported three-way catalyst 2-3 was used to prepare a catalyst 2-3.
It is noted that the manganese source includes, but is not limited to, manganese carbonate, manganese dioxide, manganese phosphate, manganese oxalate, and the manganese source may be a combination of one or more of the foregoing materials.
Preparation of silica gel modified polycarbonate
Preparation examples 27 to 29
Silica gel, catalyst 1, cocatalyst and propylene oxide were taken separately, and the specific mass is shown in table 4.
Placing silica gel in an autoclave, sequentially adding a catalyst and a cocatalyst into the autoclave, adding propylene oxide into the autoclave under the nitrogen atmosphere, flushing 2MPa high-purity carbon dioxide, heating the oil bath to 25 ℃, magnetically stirring for reaction for 4d at 800r/min to obtain a solid product, dissolving the solid product in dichloromethane, filtering, retaining a filter cake, dissolving the filter cake in dichloromethane again, performing ultrasonic treatment, removing the solvent under reduced pressure, and drying to obtain the polycarbonate 1-3 modified by the silica gel.
TABLE 4 preparation examples 27-29 silica gel modified polycarbonate compositions
Preparation example 30
The difference from preparation example 28 is that: instead of catalyst 1 in preparation example 28, catalyst 2-3 was used to prepare silica gel modified polycarbonates 4-5.
Preparation example 31
The difference from preparation example 17 is that: instead of the polycarbonate in preparation example 17, a polycarbonate 2 modified with silica gel was used to prepare a polycarbonate 6 modified with silica gel.
Examples
Examples 1 to 4
In one aspect, the application provides an ultrathin backboard, which comprises a silica gel layer 3, a reinforcing layer 2 and a Polycarbonate (PC) layer 1 which are sequentially arranged from top to bottom, wherein the reinforcing layer 2 is made of a composite material, the composite material comprises glass fibers, and the composite material also comprises reinforcing fibers, polycarbonate and an organosilicon compound, and the specific mass is shown in table 1. The thickness of the silica gel layer 3 is 0.2mm, the thickness of the reinforcing layer 2 is 0.1mm, the thickness of the PC layer 1 is 0.3mm, the whole thickness of the backboard is 0.6mm, and compared with the existing backboard, the backboard has a better thinning effect.
Wherein the organosilicon compound in the embodiment comprises any one of octamethyl cyclotetrasiloxane and silane coupling agent KH-570, and the silane coupling agent is selected in the embodiment; the polycarbonate is the commercial polycarbonate with equal quality and the polycarbonate 1 modified by silica gel, and the commercial polycarbonate is the polycarbonate with L-1250Y of Jiangsu laimi plastic limited company.
In another aspect, the present application provides a method for preparing an ultrathin backboard, comprising the steps of: and (3) taking the reinforced fiber, the polycarbonate and the silane coupling agent according to the formula, stirring and mixing, placing in an extruder, heating and melting for extrusion, and forming to obtain the composite material 1-3. And (3) laminating and bonding the composite material and the PC board to obtain a composite board, coating silica gel on the composite board, and drying to obtain the backboard 1-3.
Table 5 composition of the composites of examples 1-4
Example 5
The difference from example 4 is that: and taking the absolute ethyl alcohol cotton ball to wipe the composite material 2, drying by nitrogen, putting the composite material into a vacuum chamber, performing argon-oxygen mixed gas plasma treatment for 2.5min, and taking out the composite material 5 to obtain the backboard 5.
Examples 6 to 7
The difference from example 5 is that: and respectively adjusting the treatment time to 3min and 4min to obtain the composite material 6-7 and the backboard 6-7.
Example 8
The difference from example 4 is that: also included was 1kg of paraffin wax to give a composite material 8, to give a back plate 8.
Example 9
The difference from example 4 is that: and 1kg of graphene 1 is further included to obtain a composite material 9, and the backboard 9 is obtained.
Example 10
The difference from example 4 is that: and 1kg of graphene 2 is also included to obtain a composite material 10, and the backboard 10 is obtained.
Example 11
The difference from example 4 is that: also comprising 1kg of paraffin wax and 1kg of graphene 2 to obtain a composite material 11, and obtaining the backboard 11.
Examples 12-15.
The difference from example 4 is that: the polycarbonate was equal quality commercial polycarbonate and 2-5 polycarbonate modified with silica gel in place of the polycarbonate in example 4 to give composite 12-15 to give back sheet 12-15.
Examples 16 to 17
The difference from example 4 is that: the polycarbonates included equal mass of commercial polycarbonate, silica gel modified polycarbonate 1 and ion infused polycarbonate 1-2 in place of the polycarbonate of example 4, resulting in a composite 16-17, resulting in a back sheet 16-17.
Example 18
The difference from example 4 is that: the polycarbonate comprises equal mass of commercially available polycarbonate and a polycarbonate modified with silica gel 6 in place of the polycarbonate of example 4 to give a composite 18 and a back sheet 18.
Examples 19 to 25
The difference from example 3 is that: the reinforcing fibers 2-8 were used in place of the reinforcing fibers 1 in example 4 to obtain composite materials 19-25, resulting in back sheets 19-25.
Comparative example
Comparative example 1
This comparative example differs from example 4 in that no polycarbonate modified with silica gel was added to this comparative example, resulting in composite 26.
Comparative example 2
This comparative example differs from example 4 in that no reinforcing fiber was added in this comparative example, resulting in a composite material 27.
Performance test
Performance testing of backplanes
(1) Intensity test: and detecting the impact strength of the composite material by an impact tester according to GB/T1843-2008 determination of the impact strength of the plastic cantilever beam.
(2) Tensile property detection: the tensile properties of the composite materials were tested according to GB/T1040-2006 determination of tensile properties of plastics.
(3) Surface hardness detection: shore hardness is commonly used to test the ability of surfaces of plastics, rubber, and the like to resist indentation by hard objects. The sample is placed on a platform, pressed into the sample vertically by a sclerometer pressing needle, and the sample is read after balancing. The same samples were tested 5 times at different locations and averaged. The surface of the selected sample is smooth and even during measurement, and mechanical damage and other impurities are avoided. The room temperature at the time of the test was 23℃and 5 ℃.
TABLE 6 Performance test for examples 1-25, comparative examples 1-2
The comparison of performance tests in combination with Table 6 can be found:
(1) Comparison of examples 1-4 and comparative examples 1-2 shows that: the tensile strength, impact strength and hardness of the composite materials prepared in examples 1-4 are all improved, which shows that the application adopts the organosilicon compound and the reinforcing fiber to be added into the polycarbonate, so that silver patterns and shearing yield bands can be formed, a framework structure can be formed in the polycarbonate, the strength and toughness of the composite materials are effectively improved, and the service life of the backboard is prolonged. As can be seen from Table 6, the mechanical properties and wear resistance of the composite material prepared in example 4 are better, which indicates that the proportions of the components in the composite material are more suitable.
(2) The comparison of examples 5-7 and example 4 can be found: the tensile strength, impact strength and hardness of the composite materials prepared in examples 5-7 are all improved, which shows that the plasma treatment is carried out on the surface of the composite materials, the treatment time is optimized, and the plasma can induce molecular chain crosslinking to occur in the composite materials, so that the surface compactness of the composite materials is improved, and the surface hardness of the composite materials is enhanced. As can be seen from Table 6, the mechanical properties and abrasion resistance of the composite material prepared in example 6 were good, indicating that the treatment time of the surface plasmon at this time was suitable.
(3) The comparison of examples 8-11 and example 4 can be found: the tensile strength, impact strength and hardness of the composite materials prepared in the embodiments 8-11 are all improved, which shows that the paraffin wax and the graphene are added into the composite materials, so that the paraffin wax can lubricate the reinforcing fibers, the dispersion uniformity of the reinforcing fibers in the composite materials is improved, and a smooth hand feeling surface can be formed; and the lamellar structure of the graphene can be loaded on the reinforced fiber and lubricate the polycarbonate molecular chain segments, so that the impact force applied to the composite material is fully dispersed, and the toughness of the backboard is improved. As can be seen from Table 6, the mechanical properties and wear resistance of the composite material prepared in example 11 are better, which indicates that the proportions of the components in the composite material are more suitable.
(4) As can be seen in the comparison of examples 12-13, examples 14-15, examples 16-17, example 18 and example 4: the tensile strength, impact strength and hardness of the composite materials prepared in examples 12-18 are all improved, which shows that the application optimizes the step of modifying polycarbonate by silica gel, enhances the bonding strength between silica gel and polycarbonate, improves the crosslinking density in polycarbonate, optimizes the proportion of each component in the catalyst and improves the catalytic effect of the catalyst. As can be seen from Table 6, the mechanical properties and abrasion resistance of the composite material prepared in example 18 were good, which indicates that the proportions of the components in the polycarbonate were suitable.
(5) The comparison of examples 19-20, example 21, examples 22-25 and example 4 can be found: the tensile strength, impact resistance and hardness of the composite material prepared in the embodiments 19-25 are all improved, which shows that the application adopts the cooperation of dopamine, nano boron nitride, nano silicon dioxide, nano zinc oxide and polytetrafluoroethylene to carry out reinforcing treatment on glass fibers, and the self-polymerization of the dopamine forms an adsorption layer on the glass fibers through covalent bonds, so that nano particles and polytetrafluoroethylene are effectively adsorbed, the inner wall of pores on the surface of the glass fibers is effectively supported, and meanwhile, the polytetrafluoroethylene film is coated, so that the strength of the glass fibers is improved, the possibility of aggregation of the glass fibers is reduced, and the composite material can obtain uniform and stable strength.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.
Claims (5)
1. An ultrathin backboard with the thickness of 0.6mm, which is characterized in that: the glass fiber reinforced plastic composite material comprises a silica gel layer (3), a reinforcing layer (2) and a polycarbonate layer (1) which are sequentially arranged from top to bottom, wherein the reinforcing layer (2) is made of a composite material, the composite material comprises glass fibers, and the composite material further comprises the following substances in parts by weight: 5-10 parts of organosilicon compound, 3-5 parts of reinforcing fiber and 20-40 parts of polycarbonate, wherein the polycarbonate comprises polycarbonate modified by silica gel, the reinforcing fiber comprises liquid crystal microfibers, and the glass fiber is porous glass fiber;
The composite material further comprises one or two of paraffin and graphene, wherein the graphene is surface-functionalized graphene;
The preparation of the polycarbonate modified by silica gel comprises the following steps:
according to the weight portions, respectively taking 5 to 6 portions of silica gel, 1.5 to 2.5 portions of catalyst, 1.5 to 2 portions of cocatalyst and 20 to 30 portions of propylene oxide;
Placing silica gel in an autoclave, sequentially adding a catalyst and a cocatalyst into the autoclave, adding propylene oxide into the autoclave under the nitrogen atmosphere, adding high-purity carbon dioxide, heating in an oil bath, magnetically stirring for reaction to obtain a solid product, dissolving the solid product in dichloromethane, filtering, retaining a filter cake, dissolving the filter cake in dichloromethane again, performing ultrasonic treatment, and removing the solvent under reduced pressure to obtain the polycarbonate modified by the silica gel.
2. An ultra-thin backsheet according to claim 1, wherein: the glass fiber is glass fiber reinforced by a reinforcing agent, and the reinforcing agent comprises polytetrafluoroethylene.
3. An ultra-thin backsheet according to claim 2, wherein: the reinforcing agent also comprises any one of nano boron nitride, nano silicon dioxide and nano zinc oxide, and the reinforcing agent also comprises dopamine.
4. An ultra-thin backsheet according to claim 1, wherein: the catalyst comprises a Salen Co (III) catalyst and a rare earth-loaded three-way catalyst, wherein the rare earth-loaded three-way catalyst comprises the following preparation steps:
respectively weighing 3-5 parts of trichloroacetic acid, 1-2 parts of yttrium oxide, 2-4 parts of propylene oxide, 1-3 parts of diethyl zinc, 1-2 parts of glycerol and 0.5-2 parts of silica gel according to parts by weight, stirring and mixing the trichloroacetic acid and the yttrium oxide, continuously reacting, and vacuum drying to obtain yttrium trichloroacetate;
and (3) reacting yttrium trichloroacetate with propylene oxide in a nitrogen atmosphere, adding glycerol, stirring and mixing, dropwise adding diethyl zinc, stirring and mixing to obtain a catalytic component, and mixing the catalytic component with silica gel to obtain the rare earth-loaded ternary catalyst, wherein the silica gel is aluminum nitrate modified silica gel.
5. An ultra-thin backsheet according to claim 1, wherein: the polycarbonate also includes an ion-implanted polycarbonate, the ion-implanted polycarbonate including any of B +、O+.
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