CN113402814A - PP (polypropylene) backing plate for slicing single/polycrystalline silicon rod and preparation method thereof - Google Patents
PP (polypropylene) backing plate for slicing single/polycrystalline silicon rod and preparation method thereof Download PDFInfo
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- CN113402814A CN113402814A CN202110912900.3A CN202110912900A CN113402814A CN 113402814 A CN113402814 A CN 113402814A CN 202110912900 A CN202110912900 A CN 202110912900A CN 113402814 A CN113402814 A CN 113402814A
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- 229910021420 polycrystalline silicon Inorganic materials 0.000 title claims abstract description 21
- 239000004743 Polypropylene Substances 0.000 title abstract description 55
- 238000002360 preparation method Methods 0.000 title abstract description 7
- -1 polypropylene Polymers 0.000 title abstract description 6
- 229920001155 polypropylene Polymers 0.000 title abstract description 6
- 229920005989 resin Polymers 0.000 claims abstract description 58
- 239000011347 resin Substances 0.000 claims abstract description 58
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003063 flame retardant Substances 0.000 claims abstract description 33
- 238000005520 cutting process Methods 0.000 claims abstract description 32
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 17
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 239000000945 filler Substances 0.000 claims abstract description 9
- 239000000314 lubricant Substances 0.000 claims abstract description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 5
- 239000010703 silicon Substances 0.000 claims abstract description 5
- 238000001125 extrusion Methods 0.000 claims description 28
- 238000002156 mixing Methods 0.000 claims description 16
- 239000004677 Nylon Substances 0.000 claims description 12
- 229920001577 copolymer Polymers 0.000 claims description 12
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical group CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 12
- 229920001778 nylon Polymers 0.000 claims description 12
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 238000003490 calendering Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 7
- 238000003801 milling Methods 0.000 claims description 7
- 238000004806 packaging method and process Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 7
- 239000002985 plastic film Substances 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 2
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229910021421 monocrystalline silicon Inorganic materials 0.000 claims description 2
- 229920001470 polyketone Polymers 0.000 claims description 2
- 229910003460 diamond Inorganic materials 0.000 abstract description 5
- 239000010432 diamond Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 229920006335 epoxy glue Polymers 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract description 2
- 229910052760 oxygen Inorganic materials 0.000 abstract description 2
- 239000001301 oxygen Substances 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 40
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 36
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 24
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 21
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 18
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 16
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 description 16
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 14
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 14
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 14
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 12
- 229910052757 nitrogen Inorganic materials 0.000 description 12
- MGNCLNQXLYJVJD-UHFFFAOYSA-N cyanuric chloride Chemical compound ClC1=NC(Cl)=NC(Cl)=N1 MGNCLNQXLYJVJD-UHFFFAOYSA-N 0.000 description 8
- DDRPCXLAQZKBJP-UHFFFAOYSA-N furfurylamine Chemical compound NCC1=CC=CO1 DDRPCXLAQZKBJP-UHFFFAOYSA-N 0.000 description 8
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 8
- NHDIQVFFNDKAQU-UHFFFAOYSA-N tripropan-2-yl borate Chemical compound CC(C)OB(OC(C)C)OC(C)C NHDIQVFFNDKAQU-UHFFFAOYSA-N 0.000 description 8
- UOLPZAPIFFZLMF-UHFFFAOYSA-N 2-bromobenzene-1,3-diol Chemical compound OC1=CC=CC(O)=C1Br UOLPZAPIFFZLMF-UHFFFAOYSA-N 0.000 description 7
- 229910052763 palladium Inorganic materials 0.000 description 7
- 229910000027 potassium carbonate Inorganic materials 0.000 description 7
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 6
- 238000010992 reflux Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 230000035939 shock Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- XVMSFILGAMDHEY-UHFFFAOYSA-N 6-(4-aminophenyl)sulfonylpyridin-3-amine Chemical compound C1=CC(N)=CC=C1S(=O)(=O)C1=CC=C(N)C=N1 XVMSFILGAMDHEY-UHFFFAOYSA-N 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a PP (polypropylene) backing plate for slicing a single/polycrystalline silicon rod and a preparation method thereof, wherein the PP backing plate comprises the following raw materials in parts by weight: 55-80 parts of PP resin, 10-15 parts of tough resin, 5-20 parts of polar resin, 5-10 parts of filler, 0.3-0.5 part of antioxidant, 0.2-0.3 part of lubricant and 5-10 parts of flame retardant; the PP resin has low density, easy cutting, high temperature resistance, no deformation during cutting and no sticking; the tough resin material is wear-resistant and vibration-absorbing, so that the cutting stability of the diamond wire is improved; the polar resin and the filler improve the polarity of a system, ensure that the plate can use epoxy glue as an adhesive, the modified PP cutting cushion plate has high cost performance, easy cutting, no deformation, small linear vibration, low cost and high cost performance, and can effectively enhance the cutting stability and improve the yield of cutting. The cut line mark on the surface of the cut silicon wafer is light, the surface is good, and the surface of the backing plate can be quickly carbonized and covered to achieve the effects of heat insulation and oxygen isolation during combustion, so that flame is quickly extinguished.
Description
Technical Field
The invention relates to the technical field of solar silicon wafer preparation, in particular to a PP (polypropylene) backing plate for slicing a single/polycrystalline silicon rod and a preparation method thereof.
Background
Along with the environmental protection requirement of carbon neutralization, the new energy technology obtains sufficient attention in the industrial field, in particular to photovoltaic energy. At present, the photovoltaic power generation mainly uses single/polycrystalline silicon photovoltaic cells for power generation. The silicon wafer is mainly processed by adopting a diamond wire multi-wire cutting technology, and the higher the yield in the cutting process, the lower the cost.
The diameter of the diamond wire is gradually reduced from 60-80 mu m to 30-40 mu m, the wire cutting tension is reduced, the jitter of the diamond wire is increased during high-speed cutting, the cutting system is more and more unstable, and in order to ensure the cutting yield, the easy cutting performance and the quality stability of cutting glue and a cutting backing plate need to be improved.
The cutting backing plate is made of the material which is easy to cut, absorb shock and resist cutting, so that the stability of a cutting system can be effectively improved, and the rate of finished products of the slices can be improved.
Disclosure of Invention
The invention aims to provide a PP (polypropylene) backing plate for slicing a single/polycrystalline silicon rod and a preparation method thereof.
The purpose of the invention can be realized by the following technical scheme:
the PP backing plate for slicing the single/polycrystalline silicon rod comprises the following raw materials in parts by weight: 55-80 parts of PP resin, 10-15 parts of tough resin, 5-20 parts of polar resin, 5-10 parts of filler, 0.3-0.5 part of antioxidant, 0.2-0.3 part of lubricant and 5-10 parts of flame retardant.
Further, the tough resin is one of nylon resin PA6 and polyketone resin POK.
Further, the polar resin is one of ethylene-maleic anhydride copolymer and sulfonated PP resin.
Furthermore, the filler is one or a mixture of more of diatomite, calcium carbonate and talcum powder in any proportion.
Further, the antioxidant is prepared by mixing an antioxidant 1010 and an antioxidant 168 in a mass ratio of 1:1.
Further, the lubricant is ethylene bis stearamide.
Further, the flame retardant is prepared by the following steps:
step A1: dissolving neopentyl glycol in chloroform, stirring and dropwise adding phosphorus oxychloride at the rotation speed of 200-300r/min and the temperature of 25-30 ℃, reacting for 5-7h at the temperature of 65-70 ℃, adding 2-bromoresorcinol, adding pyridine at the temperature of 0-5 ℃ and reacting for 8-10h to obtain an intermediate 1;
the reaction process is as follows:
step A2: dissolving the intermediate 1 in tetrahydrofuran, introducing nitrogen for protection, adding n-butyllithium at the temperature of 78-80 ℃ below zero for reaction for 1-1.5h, adding triisopropyl borate, and continuing the reaction for 2-3h to obtain an intermediate 2;
the reaction process is as follows:
step A3: cyanuric chloride, furfuryl amine and triethylamine are added into the reaction, the reaction is carried out for 3-5h under the conditions that the rotating speed is 150-200r/min and the temperature is 0-5 ℃, an intermediate 3 is prepared, the intermediate 3, the intermediate 2, palladium tetratriphenylphosphine, potassium carbonate and tetrahydrofuran are added into a reaction kettle, nitrogen is introduced for protection, the reflux reaction is carried out for 10-15h under the temperature of 80-90 ℃, and then the tetrahydrofuran is distilled and removed, thus preparing the flame retardant.
The reaction process is as follows:
further, the ratio of the neopentyl glycol, the chloroform, the phosphorus oxychloride, the 2-bromoresorcinol and the pyridine in the step A1 is 0.2mol:30mL:0.2mol:0.1mol:0.1 mol.
Further, the intermediate 1, n-butyllithium and triisopropylborate in the step A2 are used in a molar ratio of 1:1.2: 1.5.
Further, the molar ratio of the cyanuric chloride to the furfuryl amine to the triethylamine in the step A3 is 1:1:1, and the molar ratio of the intermediate 3 to the intermediate 2 to the palladium tetratriphenylphosphine to the potassium carbonate is 0.01:0.02:0.01: 2.
A preparation method of a PP (polypropylene) backing plate for slicing a single/polycrystalline silicon rod comprises the following steps:
step S1: mixing and granulating raw materials: weighing PP resin, tough resin, polar resin, a filler, an antioxidant, a lubricant and a flame retardant, mixing and granulating in a double-screw extruder, wherein the temperature of the double-screw extruder is set at 220-240 ℃;
step S2: extrusion of calendered plastic sheet: extruding the prepared compound resin particles in an extrusion calender to draw a plate, cutting at a fixed length, and preparing a blank plate, wherein the extrusion temperature is set at 200-220 ℃, and the extrusion speed is controlled at 0.5 m/min;
step S3: and (3) plastic plate post-treatment: and milling the blank plate, cleaning and packaging to obtain the PP cushion plate.
The invention has the beneficial effects that: the invention selects PP resin as a main material in the process of preparing the PP liner plate for slicing the mono/polycrystalline silicon rod, the material has low price, high cost performance, low density, easy cutting, high temperature resistance, no deformation and no thread sticking during cutting, a tough resin material is added to increase the vibration absorption effect of a system, the linear shock of superfine diamond wires can be improved to a limited extent, polar resin and a filling agent are added to improve the polarity of the system, the plate can be ensured to use epoxy glue as an adhesive, the prepared PP liner plate has the advantages of easy cutting, no deformation, small linear shock, low cost, high cost performance, light cutting line mark and good surface of a cut silicon wafer surface, a flame retardant is prepared, neopentyl glycol is used as a raw material to react with phosphorus oxychloride as a raw material, then the reaction is carried out with 2-resorcinol bromide to prepare an intermediate 1, the intermediate 1 is treated with n-butyl lithium and triisopropyl borate, preparing an intermediate 2, reacting cyanuric chloride with furfuryl amine through temperature control to prepare an intermediate 3, and further reacting the intermediate 3 with the intermediate 2 to prepare the flame retardant, wherein the flame retardant can be quickly carbonized and covered on the surface of the backing plate when the backing plate is burnt to achieve the effects of heat insulation and oxygen isolation, so that the flame can be quickly extinguished.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The PP backing plate for slicing the single/polycrystalline silicon rod comprises the following raw materials in parts by weight: 55 parts of PP resin, 10 parts of nylon resin PA6, 5 parts of ethylene-maleic anhydride copolymer, 5 parts of diatomite, 0.3 part of antioxidant, 0.2 part of ethylene bis stearamide and 5 parts of flame retardant;
the PP liner plate is prepared by the following steps:
step S1: mixing and granulating raw materials: weighing PP resin, nylon resin PA6, ethylene-maleic anhydride copolymer, diatomite, an antioxidant, ethylene bis stearamide and a flame retardant, mixing and granulating in a double-screw extruder, wherein the temperature of the double-screw extruder is set at 220 ℃;
step S2: extrusion of calendered plastic sheet: extruding the prepared compound resin particles in an extrusion calender to draw a plate, cutting the plate at a fixed length, and preparing a blank plate, wherein the extrusion temperature is set at 200 ℃, and the extrusion speed is controlled at 0.5 m/min;
step S3: and (3) plastic plate post-treatment: and milling the blank plate, cleaning and packaging to obtain the PP cushion plate.
The flame retardant is prepared by the following steps:
step A1: dissolving neopentyl glycol in chloroform, stirring and dropwise adding phosphorus oxychloride at the rotation speed of 200r/min and the temperature of 25 ℃, reacting for 5 hours at the temperature of 65 ℃, adding 2-bromoresorcinol, adding pyridine at the temperature of 0 ℃, and reacting for 8 hours to obtain an intermediate 1;
step A2: dissolving the intermediate 1 in tetrahydrofuran, introducing nitrogen for protection, adding n-butyllithium for reaction for 1h at the temperature of minus 78 ℃, adding triisopropyl borate, and continuing the reaction for 2h to obtain an intermediate 2;
step A3: cyanuric chloride, furfuryl amine and triethylamine are added into a reaction, the reaction is carried out for 3h at the rotation speed of 150r/min and the temperature of 0 ℃ to obtain an intermediate 3, the intermediate 2, palladium tetratriphenylphosphine, potassium carbonate and tetrahydrofuran are added into a reaction kettle, nitrogen is introduced for protection, reflux reaction is carried out for 10h at the temperature of 80 ℃, and then the tetrahydrofuran is distilled to remove, thus obtaining the flame retardant.
Example 2
The PP backing plate for slicing the single/polycrystalline silicon rod comprises the following raw materials in parts by weight: 70 parts of PP resin, 15 parts of nylon resin PA6, 5.5 parts of ethylene-maleic anhydride copolymer, 9 parts of diatomite, 0.3 part of antioxidant, 0.2 part of ethylene bis stearamide and 6 parts of flame retardant;
the PP liner plate is prepared by the following steps:
step S1: mixing and granulating raw materials: weighing PP resin, nylon resin PA6, ethylene-maleic anhydride copolymer, diatomite, an antioxidant, ethylene bis stearamide and a flame retardant, mixing and granulating in a double-screw extruder, wherein the temperature of the double-screw extruder is set at 220 ℃;
step S2: extrusion of calendered plastic sheet: extruding the prepared compound resin particles in an extrusion calender to draw a plate, cutting the plate at a fixed length, and preparing a blank plate, wherein the extrusion temperature is set at 200 ℃, and the extrusion speed is controlled at 0.5 m/min;
step S3: and (3) plastic plate post-treatment: and milling the blank plate, cleaning and packaging to obtain the PP cushion plate.
The flame retardant is prepared by the following steps:
step A1: dissolving neopentyl glycol in chloroform, stirring and dropwise adding phosphorus oxychloride at the rotation speed of 200r/min and the temperature of 25 ℃, reacting for 5 hours at the temperature of 65 ℃, adding 2-bromoresorcinol, adding pyridine at the temperature of 0 ℃, and reacting for 8 hours to obtain an intermediate 1;
step A2: dissolving the intermediate 1 in tetrahydrofuran, introducing nitrogen for protection, adding n-butyllithium for reaction for 1h at the temperature of minus 78 ℃, adding triisopropyl borate, and continuing the reaction for 2h to obtain an intermediate 2;
step A3: cyanuric chloride, furfuryl amine and triethylamine are added into a reaction, the reaction is carried out for 3h at the rotation speed of 150r/min and the temperature of 0 ℃ to obtain an intermediate 3, the intermediate 2, palladium tetratriphenylphosphine, potassium carbonate and tetrahydrofuran are added into a reaction kettle, nitrogen is introduced for protection, reflux reaction is carried out for 10h at the temperature of 80 ℃, and then the tetrahydrofuran is distilled to remove, thus obtaining the flame retardant.
Example 3
The PP backing plate for slicing the single/polycrystalline silicon rod comprises the following raw materials in parts by weight: 60 parts of PP resin, 10 parts of nylon resin PA6, 20 parts of ethylene-maleic anhydride copolymer, 9.5 parts of talcum powder, 0.3 part of antioxidant, 0.2 part of ethylene bis stearamide and 7 parts of flame retardant;
the PP liner plate is prepared by the following steps:
step S1: mixing and granulating raw materials: weighing PP resin, nylon resin PA6, ethylene-maleic anhydride copolymer, talcum powder, antioxidant, ethylene bis-stearamide and flame retardant, mixing and granulating in a double-screw extruder, wherein the temperature of the double-screw extruder is set at 220 ℃;
step S2: extrusion of calendered plastic sheet: extruding the prepared compound resin particles in an extrusion calender to draw a plate, cutting the plate at a fixed length, and preparing a blank plate, wherein the extrusion temperature is set at 200 ℃, and the extrusion speed is controlled at 0.5 m/min;
step S3: and (3) plastic plate post-treatment: and milling the blank plate, cleaning and packaging to obtain the PP cushion plate.
The flame retardant is prepared by the following steps:
step A1: dissolving neopentyl glycol in chloroform, stirring and dropwise adding phosphorus oxychloride at the rotation speed of 200r/min and the temperature of 25 ℃, reacting for 5 hours at the temperature of 65 ℃, adding 2-bromoresorcinol, adding pyridine at the temperature of 0 ℃, and reacting for 8 hours to obtain an intermediate 1;
step A2: dissolving the intermediate 1 in tetrahydrofuran, introducing nitrogen for protection, adding n-butyllithium for reaction for 1h at the temperature of minus 78 ℃, adding triisopropyl borate, and continuing the reaction for 2h to obtain an intermediate 2;
step A3: cyanuric chloride, furfuryl amine and triethylamine are added into a reaction, the reaction is carried out for 3h at the rotation speed of 150r/min and the temperature of 0 ℃ to obtain an intermediate 3, the intermediate 2, palladium tetratriphenylphosphine, potassium carbonate and tetrahydrofuran are added into a reaction kettle, nitrogen is introduced for protection, reflux reaction is carried out for 10h at the temperature of 80 ℃, and then the tetrahydrofuran is distilled to remove, thus obtaining the flame retardant.
Example 4
The PP backing plate for slicing the single/polycrystalline silicon rod comprises the following raw materials in parts by weight: 78 parts of PP resin, 10 parts of nylon resin PA6, 5 parts of ethylene-maleic anhydride copolymer, 6.2 parts of calcium carbonate, 0.5 part of antioxidant, 0.3 part of ethylene bis stearamide and 9 parts of flame retardant;
the PP liner plate is prepared by the following steps:
step S1: mixing and granulating raw materials: weighing PP resin, nylon resin PA6, ethylene-maleic anhydride copolymer, calcium carbonate, antioxidant, ethylene bis stearamide and flame retardant, mixing and granulating in a double-screw extruder, wherein the temperature of the double-screw extruder is set at 240 ℃;
step S2: extrusion of calendered plastic sheet: extruding the prepared compound resin particles in an extrusion calender to draw a plate, cutting the plate at a fixed length, and preparing a blank plate, wherein the extrusion temperature is set at 220 ℃, and the extrusion speed is controlled at 0.5 m/min;
step S3: and (3) plastic plate post-treatment: and milling the blank plate, cleaning and packaging to obtain the PP cushion plate.
The flame retardant is prepared by the following steps:
step A1: dissolving neopentyl glycol in chloroform, stirring and dropwise adding phosphorus oxychloride at the rotation speed of 300r/min and the temperature of 30 ℃, reacting for 7 hours at the temperature of 70 ℃, adding 2-bromoresorcinol, adding pyridine at the temperature of 5 ℃, and reacting for 10 hours to obtain an intermediate 1;
step A2: dissolving the intermediate 1 in tetrahydrofuran, introducing nitrogen for protection, adding n-butyllithium for reaction for 1.5h at the temperature of 80 ℃ below zero, adding triisopropyl borate, and continuing the reaction for 3h to obtain an intermediate 2;
step A3: cyanuric chloride, furfuryl amine and triethylamine are added into a reaction, the reaction is carried out for 5 hours at the rotation speed of 200r/min and the temperature of 5 ℃ to obtain an intermediate 3, the intermediate 2, palladium tetratriphenylphosphine, potassium carbonate and tetrahydrofuran are added into a reaction kettle, nitrogen is introduced for protection, reflux reaction is carried out for 10-15 hours at the temperature of 80-90 ℃, and then the tetrahydrofuran is distilled off to obtain the flame retardant.
Example 5
The PP backing plate for slicing the single/polycrystalline silicon rod comprises the following raw materials in parts by weight: 80 parts of PP resin, 15 parts of nylon resin PA6, 20 parts of ethylene-maleic anhydride copolymer, 10 parts of diatomite, 0.5 part of antioxidant, 0.3 part of ethylene bis stearamide and 10 parts of flame retardant;
the PP liner plate is prepared by the following steps:
step S1: mixing and granulating raw materials: weighing PP resin, nylon resin PA6, ethylene-maleic anhydride copolymer, diatomite, an antioxidant, ethylene bis stearamide and a flame retardant, mixing and granulating in a double-screw extruder, wherein the temperature of the double-screw extruder is set at 240 ℃;
step S2: extrusion of calendered plastic sheet: extruding the prepared compound resin particles in an extrusion calender to draw a plate, cutting the plate at a fixed length, and preparing a blank plate, wherein the extrusion temperature is set at 220 ℃, and the extrusion speed is controlled at 0.5 m/min;
step S3: and (3) plastic plate post-treatment: and milling the blank plate, cleaning and packaging to obtain the PP cushion plate.
The flame retardant is prepared by the following steps:
step A1: dissolving neopentyl glycol in chloroform, stirring and dropwise adding phosphorus oxychloride at the rotation speed of 300r/min and the temperature of 30 ℃, reacting for 7 hours at the temperature of 70 ℃, adding 2-bromoresorcinol, adding pyridine at the temperature of 5 ℃, and reacting for 10 hours to obtain an intermediate 1;
step A2: dissolving the intermediate 1 in tetrahydrofuran, introducing nitrogen for protection, adding n-butyllithium for reaction for 1.5h at the temperature of 80 ℃ below zero, adding triisopropyl borate, and continuing the reaction for 3h to obtain an intermediate 2;
step A3: cyanuric chloride, furfuryl amine and triethylamine are added into a reaction, the reaction is carried out for 5h at the rotation speed of 200r/min and the temperature of 5 ℃ to obtain an intermediate 3, the intermediate 2, palladium tetratriphenylphosphine, potassium carbonate and tetrahydrofuran are added into a reaction kettle, nitrogen is introduced for protection, reflux reaction is carried out for 15h at the temperature of 90 ℃, and then the tetrahydrofuran is distilled to remove, thus obtaining the flame retardant.
Comparative example
This comparative example is a PP sheet disclosed in chinese patent CN 107723824A.
Slicing the single/polycrystalline silicon rods of the PP plates prepared in examples 1 to 3 and comparative example at a cutting speed of 10 knives/24 hours, counting a wire breakage rate, a wire hanging rate and a plate dropping rate, and measuring flame retardancy of the PP plates, with the results shown in the following table;
| example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Comparative example | |
| Percentage of broken wire% | 1.3 | 1.3 | 1.5 | 1.4 | 1.6 | 2.8 |
| The thread hanging rate% | 1.5 | 1.2 | 1.2 | 1.3 | 1.3 | 3.5 |
| Percentage of chipping off% | 0.8 | 1.2 | 1.0 | 0.9 | 1.0 | 2.5 |
| Flame retardant rating | V1 | V1 | V1 | V1 | V1 | V2 |
As can be seen from the above Table 1, the PP liner plates prepared in the examples 1 to 5 have the wire breakage rate of 1.3 to 1.6%, the wire hanging rate of 1.2 to 1.5%, the sheet dropping rate of 0.8 to 1.2% and the flame retardant rating of V1, and have better effects than the PP plates prepared in the comparative example, which shows that the PP liner plates prepared in the invention have the characteristics of easy cutting, no deformation, small wire shock, low cost and good flame retardant effect.
The foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.
Claims (7)
1. The utility model provides a PP backing plate is used in single/polycrystal silicon rod section which characterized in that: the feed comprises the following raw materials in parts by weight: 55-80 parts of PP resin, 10-15 parts of tough resin, 5-20 parts of polar resin, 5-10 parts of filler, 0.3-0.5 part of antioxidant, 0.2-0.3 part of lubricant and 5-10 parts of flame retardant.
2. The PP liner plate for slicing single/polycrystalline silicon rod according to claim 1, wherein: the tough resin is one of nylon resin PA6 and polyketone resin POK.
3. The PP liner plate for slicing single/polycrystalline silicon rod according to claim 1, wherein: the polar resin is one of ethylene-maleic anhydride copolymer and sulfonated PP resin.
4. The PP liner plate for slicing single/polycrystalline silicon rod according to claim 1, wherein: the filler is one or a mixture of more of diatomite, calcium carbonate and talcum powder in any proportion.
5. The PP liner plate for slicing single/polycrystalline silicon rod according to claim 1, wherein: the antioxidant is prepared by mixing an antioxidant 1010 and an antioxidant 168 according to a mass ratio of 1:1.
6. The PP liner plate for slicing single/polycrystalline silicon rod according to claim 1, wherein: the lubricant is ethylene bis stearamide.
7. The method for preparing a PP pad plate for slicing a mono/polycrystalline silicon rod according to claim 1, wherein: the method specifically comprises the following steps:
step S1: mixing and granulating raw materials: weighing PP resin, tough resin, polar resin, a filler, an antioxidant, a lubricant and a flame retardant, mixing and granulating in a double-screw extruder, wherein the temperature of the double-screw extruder is set at 220-240 ℃;
step S2: extrusion of calendered plastic sheet: extruding the prepared compound resin particles in an extrusion calender to draw a plate, cutting at a fixed length, and preparing a blank plate, wherein the extrusion temperature is set at 200-220 ℃, and the extrusion speed is controlled at 0.5 m/min;
step S3: and (3) plastic plate post-treatment: and milling the blank plate, cleaning and packaging to obtain the PP cushion plate.
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| CN114517407A (en) * | 2022-02-25 | 2022-05-20 | 江苏恒力化纤股份有限公司 | Preparation method of cyclic borate flame retardant and flame-retardant polyester fiber product thereof |
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