CN116082772A - High-temperature-resistant high-strength engineering plastic and preparation method thereof - Google Patents
High-temperature-resistant high-strength engineering plastic and preparation method thereof Download PDFInfo
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- CN116082772A CN116082772A CN202211551052.9A CN202211551052A CN116082772A CN 116082772 A CN116082772 A CN 116082772A CN 202211551052 A CN202211551052 A CN 202211551052A CN 116082772 A CN116082772 A CN 116082772A
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- 229920006351 engineering plastic Polymers 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 239000000805 composite resin Substances 0.000 claims abstract description 83
- 239000003063 flame retardant Substances 0.000 claims abstract description 51
- 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 50
- 239000002131 composite material Substances 0.000 claims abstract description 47
- 238000002156 mixing Methods 0.000 claims abstract description 46
- 239000000945 filler Substances 0.000 claims abstract description 44
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 38
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 22
- 239000000194 fatty acid Substances 0.000 claims abstract description 22
- 229930195729 fatty acid Natural products 0.000 claims abstract description 22
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 21
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 21
- 150000004665 fatty acids Chemical class 0.000 claims abstract description 20
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims abstract description 13
- 239000012975 dibutyltin dilaurate Substances 0.000 claims abstract description 13
- 229920002239 polyacrylonitrile Polymers 0.000 claims abstract description 13
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000314 lubricant Substances 0.000 claims abstract description 7
- 239000003381 stabilizer Substances 0.000 claims abstract description 7
- WEHSMFCDAIHNOW-UHFFFAOYSA-N triethyl phenyl silicate Chemical compound CCO[Si](OCC)(OCC)OC1=CC=CC=C1 WEHSMFCDAIHNOW-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 130
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 66
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 62
- RGHHSNMVTDWUBI-UHFFFAOYSA-N 4-hydroxybenzaldehyde Chemical compound OC1=CC=C(C=O)C=C1 RGHHSNMVTDWUBI-UHFFFAOYSA-N 0.000 claims description 36
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 36
- 229910052786 argon Inorganic materials 0.000 claims description 33
- 238000010438 heat treatment Methods 0.000 claims description 33
- 239000011159 matrix material Substances 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 18
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 18
- 235000019441 ethanol Nutrition 0.000 claims description 18
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 18
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000008367 deionised water Substances 0.000 claims description 16
- 229910021641 deionized water Inorganic materials 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 9
- 229960000583 acetic acid Drugs 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 9
- 239000012362 glacial acetic acid Substances 0.000 claims description 9
- 238000005469 granulation Methods 0.000 claims description 9
- 230000003179 granulation Effects 0.000 claims description 9
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 9
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 9
- 229910021536 Zeolite Inorganic materials 0.000 claims description 8
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 8
- JEZFASCUIZYYEV-UHFFFAOYSA-N chloro(triethoxy)silane Chemical compound CCO[Si](Cl)(OCC)OCC JEZFASCUIZYYEV-UHFFFAOYSA-N 0.000 claims description 8
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 8
- 239000002808 molecular sieve Substances 0.000 claims description 8
- BWJUFXUULUEGMA-UHFFFAOYSA-N propan-2-yl propan-2-yloxycarbonyloxy carbonate Chemical compound CC(C)OC(=O)OOC(=O)OC(C)C BWJUFXUULUEGMA-UHFFFAOYSA-N 0.000 claims description 8
- 238000007873 sieving Methods 0.000 claims description 8
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 8
- 238000004448 titration Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 239000010457 zeolite Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 3
- 125000005313 fatty acid group Chemical group 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 230000032683 aging Effects 0.000 abstract description 9
- 230000000379 polymerizing effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 12
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- JIHQDMXYYFUGFV-UHFFFAOYSA-N 1,3,5-triazine Chemical compound C1=NC=NC=N1 JIHQDMXYYFUGFV-UHFFFAOYSA-N 0.000 description 3
- KCGFOFKGPASYIB-UHFFFAOYSA-N 2,6-ditert-butylphenol;phenol Chemical compound OC1=CC=CC=C1.CC(C)(C)C1=CC=CC(C(C)(C)C)=C1O KCGFOFKGPASYIB-UHFFFAOYSA-N 0.000 description 3
- CBOMKORDEVXTOW-UHFFFAOYSA-K [Si](=O)=O.[OH-].[Al+3].[OH-].[OH-] Chemical compound [Si](=O)=O.[OH-].[Al+3].[OH-].[OH-] CBOMKORDEVXTOW-UHFFFAOYSA-K 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- LASVAZQZFYZNPK-UHFFFAOYSA-N 2,4,6-trimethyl-1,3,5-triazine Chemical compound CC1=NC(C)=NC(C)=N1 LASVAZQZFYZNPK-UHFFFAOYSA-N 0.000 description 2
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 description 2
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XYIBRDXRRQCHLP-UHFFFAOYSA-N ethyl acetoacetate Chemical compound CCOC(=O)CC(C)=O XYIBRDXRRQCHLP-UHFFFAOYSA-N 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 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
- C08L27/00—Compositions 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; Compositions of derivatives of such polymers
- C08L27/02—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- 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 high-temperature-resistant high-strength engineering plastic and a preparation method thereof, and relates to the technical field of engineering plastics. The high-temperature-resistant high-strength engineering plastic comprises composite resin, flame-retardant composite filler, lubricant fatty acid amide and stabilizer dibutyl tin dilaurate; polymerizing polytetrafluoroethylene and polyacrylonitrile to prepare composite resin; then mixing and reacting aluminum terbutoxide and formaldehyde-based phenoxy triethoxysilane to prepare the flame-retardant composite filler; finally, mixing and reacting the composite resin, the flame-retardant composite filler, the lubricant fatty acid amide and the stabilizer dibutyl tin dilaurate to prepare the high-temperature-resistant high-strength engineering plastic; the high-temperature-resistant high-strength engineering plastic prepared by the invention has strong flame retardance, ageing resistance, tensile strength and high-temperature resistance.
Description
Technical Field
The invention relates to the technical field of engineering plastics, in particular to a high-temperature-resistant high-strength engineering plastic and a preparation method thereof.
Background
The engineering plastic is used as industrial part or casing material, has excellent strength, hardness and ageing resistance, and possesses excellent corrosion resistance, wear resistance and other performance, so that it may be used as some mechanical part to replace metal.
Most plastics are combustible substances, and plastic building materials, transportation materials, household appliance materials and the like all need plastic products to be nonflammable, have good flame retardant property, and require low smoke generation of the plastics in high fire. For this reason, in the formulation of plastics, the option of adding flame retardants becomes very important.
At present, a better flame retardant effect is obtained by adding a low-price and high-efficiency halogen-containing flame retardant into a resin matrix, but the halogen-containing flame retardant has large smoke generation amount during combustion, and generates toxic and corrosive gases or some carcinogenic substances, so that environmental pollution is easy to cause.
Disclosure of Invention
The invention aims to provide high-temperature-resistant high-strength engineering plastic and a preparation method thereof, so as to solve the problems in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme:
the high temperature resistant high strength engineering plastic comprises, by weight, 100-200 parts of composite resin, 5-30 parts of flame retardant composite filler, 5-18 parts of lubricant and 6-28.8 parts of stabilizer.
Further, the composite resin is obtained by polymerization reaction of polytetrafluoroethylene and polyacrylonitrile.
Further, the lubricant is a fatty acid amide.
Further, the flame-retardant composite filler is obtained by mixing and reacting aluminum terbutoxide and formaldehyde-based phenoxy triethoxysilane.
Further, the stabilizer is dibutyl tin dilaurate.
Further, the preparation method of the high-temperature-resistant high-strength engineering plastic comprises the following preparation steps:
(1) Preparing composite resin;
(2) Preparing a flame-retardant composite filler;
(3) And (3) preparing the high-temperature-resistant high-strength engineering plastic.
Further, the preparation method comprises the following preparation steps:
(1) Preparation of the composite resin: under the protection of argon, polytetrafluoroethylene, polyacrylonitrile and dimethyl sulfoxide are mixed according to the mass ratio of 1:0.3:1.5 to 1:0.5:2.5, mixing, stirring for 2-4 hours at 600-800 r/min, dripping diisopropyl peroxydicarbonate with the mass of 0.6-0.8 times of polytetrafluoroethylene at 40-60 drops/min, heating to 63-65 ℃, and continuously stirring for 59-61 min to prepare the composite resin;
(2) Preparation of flame-retardant composite filler: under the protection of argon, aluminum terbutoxide, formaldehyde phenoxyl triethoxysilane, sodium hydroxide and ethanol are mixed according to the mass ratio of 1:0.5:0.07:2.6 to 1:0.7:0.17:3 mixing, stirring for 15-20 min at 500-700 r/min to obtain matrix solution; under the stirring condition of 25-26 ℃ and 500-700 r/min, absolute ethyl alcohol and deionized water are mixed according to the mass ratio of 1.4:0.12 to 1.5: stirring for 15-20 min to obtain solution B; dripping 1-1.4 times of solution B into the matrix solution at a titration speed of 40-60 drops/min under the stirring condition of 25-26 ℃ and 1200-1500 r/min, continuously stirring for 10-20 min after dripping, adding 0.06-0.08 times of H beta zeolite molecular sieve into the matrix solution, heating to 144-146 ℃, synchronously boosting to 4.25MPa, continuously stirring for 1-3H, filtering, washing with ethanol and deionized water for 2-4 times, baking for 1-3H at 40-60 ℃, grinding, and sieving with a 2000-4000 mesh sieve to prepare the flame-retardant composite filler;
(3) Preparing high-temperature-resistant high-strength engineering plastic: under the protection of argon, the composite resin and the flame-retardant composite filler are mixed according to the mass ratio of 1:0.05 to 1: mixing 0.15, heating to 20-30 deg.C for 2-4 m 3 Introducing hydrogen chloride with the mass of 0.4-0.6 times of that of the composite resin per minute, stirring for 47-49 hours at 500-700 r/min, and mixing according to the mass ratio of 1:3:1.1 to 1:3.4:1.3 adding potassium carbonate, water and methylene dichloride, wherein the mass of the potassium carbonate is 1.3-1.7 times of that of the composite resin, continuously stirring for 8-12 min, adding glacial acetic acid with the mass of 0.07-0.09 times of that of the composite resin, continuously stirring for 15-17 h, continuously adding concentrated sulfuric acid with the mass of 0.9-1.2 times of that of the composite resin, continuously stirring for 47-49 h, and continuously mixing according to the mass ratio of 1:1.2 to 1:1.6 adding fatty acid amide and dibutyl tin dilaurate, wherein the mass of the fatty acid amide is 0.05-0.09 times of that of the composite resin, heating to 50-60 ℃, and continuing to obtain the productStirring for 15-25 min, and carrying out melt extrusion granulation in a single screw extruder at the temperature of 250-300 ℃ and the speed of 300-360 r/min to obtain the high-temperature-resistant high-strength engineering plastic.
Further, the preparation method of the formaldehyde-based phenoxy triethoxysilane in the step (2) comprises the following steps: under the protection of argon at the temperature, 4-hydroxybenzaldehyde and triethoxy chlorosilane, diethyl ether are mixed according to the mass ratio of 1:2: 6-1: 4:10, stirring for 20-30 min at 600-800 r/min, then adding aluminum trichloride with the mass of 0.01-0.03 times of that of the 4-hydroxybenzaldehyde, cooling to 0-4 ℃, and continuously stirring for 7-9 h to obtain the formaldehyde-phenoxyl triethoxysilane.
Compared with the prior art, the invention has the following beneficial effects:
the high-temperature-resistant high-strength engineering plastic prepared by the invention comprises composite resin, flame-retardant composite filler, lubricant and stabilizer; the composite resin is obtained by compositing polytetrafluoroethylene and polyacrylonitrile; the flame-retardant composite filler is obtained by mixing and reacting aluminum terbutoxide and formaldehyde-based phenoxy triethoxysilane.
Firstly, removing tert-butanol, p-hydroxybenzaldehyde and ethanol from tert-butanol aluminum and formaldehyde-phenoxyl triethoxysilane respectively, and condensing to form aluminum hydroxide-silicon dioxide composite gel, so that the flame retardant property of the flame retardant composite filler is enhanced; the tertbutyl reacts with the p-hydroxybenzaldehyde to form hindered phenol 2, 6-di-tert-butylphenol, which enhances the ageing resistance of the flame-retardant composite filler.
Secondly, the composite resin penetrates into the flame-retardant composite filler through gel pores of the flame-retardant composite filler, cyano groups on polyacrylonitrile react with ethanol on the flame-retardant composite filler to form ethyl acetoacetate, the ethyl acetoacetate is cyclized to form trimethyl s-triazine, the trimethyl s-triazine reacts with benzaldehyde on the flame-retardant composite filler to form tristyryl s-triazine, the high temperature resistance of the high-temperature-resistant high-strength engineering plastic is enhanced, and meanwhile, the flame-retardant composite filler is firmly dispersed in the composite resin, so that the tensile strength of the high-temperature-resistant high-strength engineering plastic is enhanced.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to more clearly illustrate the method provided by the invention, the following examples are used for describing the detailed description, and the test method of each index of the high-temperature-resistant high-strength engineering plastic prepared in the following examples is as follows:
flame retardancy: the high-temperature-resistant high-strength engineering plastics prepared in the same quality examples and comparative examples were used to determine the flame retardant rating according to UL 94.
Ageing resistance: the engineering plastics with high temperature resistance and high strength prepared in the same quality example and comparative example are put into an environment with humidity of 80% and temperature of 40 ℃ to be aged for 28 days, and the tensile strength after aging is tested according to ISO527-2 standard.
Tensile strength: the engineering plastics with high temperature resistance and high strength prepared by the same quality examples and comparative examples are tested for tensile strength according to ISO527-2 standard.
High temperature resistance: the heat distortion temperature of engineering plastics with high temperature resistance and high strength prepared in the same quality example and comparative example is measured according to the standard of ASTMD 648.
Example 1
(1) Preparation of the composite resin: under the protection of argon, polytetrafluoroethylene, polyacrylonitrile and dimethyl sulfoxide are mixed according to the mass ratio of 1:0.3:1.5, mixing, stirring for 2 hours at 600r/min, dripping diisopropyl peroxydicarbonate with the mass of 0.6 times of that of polytetrafluoroethylene at 40 drops/min, heating to 63 ℃, and continuously stirring for 59 minutes to prepare the composite resin;
(2) Preparation of flame-retardant composite filler: under the protection of argon at the temperature, 4-hydroxybenzaldehyde and triethoxy chlorosilane, diethyl ether are mixed according to the mass ratio of 1:2:6, mixing, stirring for 20min at 600r/min, then adding aluminum trichloride with the mass of 0.01 times of that of the 4-hydroxybenzaldehyde, cooling to 0 ℃, and continuously stirring for 7h to prepare formaldehyde phenoxyl triethoxysilane; under the protection of argon, aluminum terbutoxide, formaldehyde phenoxyl triethoxysilane, sodium hydroxide and ethanol are mixed according to the mass ratio of 1:0.5:0.07:2.6, mixing, stirring for 15min at 500r/min to obtain matrix solution; under the stirring condition of 25 ℃ and 500r/min, absolute ethyl alcohol and deionized water are mixed according to the mass ratio of 1.4: stirring for 15min at 0.12 to obtain solution B; dropwise adding a solution B with the mass 1 times of that of the matrix solution into the matrix solution at a titration speed of 40 drops/min under the stirring condition of 25 ℃ and 1200r/min, continuously stirring for 10min after the dropwise adding, adding a H beta zeolite molecular sieve with the mass 0.06 times of that of the matrix solution, heating to 144 ℃, synchronously boosting to 4.25MPa, continuously stirring for 1H, filtering, washing with ethanol and deionized water for 2 times, baking for 1H at 40 ℃, grinding and sieving with a 2000-mesh sieve to prepare the flame-retardant composite filler;
(3) Preparing high-temperature-resistant high-strength engineering plastic: under the protection of argon, the composite resin and the flame-retardant composite filler are mixed according to the mass ratio of 1: mixing at 0.05, heating to 20deg.C, and cooling to 2m 3 Introducing hydrogen chloride with the mass of 0.4 times of that of the composite resin per minute, stirring for 47 hours at 500r/min, and mixing according to the mass ratio of 1:3:1.1 adding potassium carbonate, water and methylene dichloride, wherein the mass of the potassium carbonate is 1.3 times of that of the composite resin, continuously stirring for 8min, adding glacial acetic acid with the mass of 0.07 times of that of the composite resin, continuously stirring for 15h, continuously adding concentrated sulfuric acid with the mass of 0.9 times of that of the composite resin, continuously stirring for 47h, and continuously stirring according to the mass ratio of 1:1.2 adding fatty acid amide and dibutyl tin dilaurate, wherein the mass of the fatty acid amide is 0.05 times that of the composite resin, heating to 50 ℃, continuously stirring for 15min, and carrying out melt extrusion granulation in a single screw extruder at 250 ℃ and 300r/min to prepare the high-temperature-resistant high-strength engineering plastic.
Example 2
(1) Preparation of the composite resin: under the protection of argon, polytetrafluoroethylene, polyacrylonitrile and dimethyl sulfoxide are mixed according to the mass ratio of 1:0.4:2, mixing, stirring for 3 hours at 700r/min, dripping diisopropyl peroxydicarbonate with the mass of 0.7 times of polytetrafluoroethylene at 50 drops/min, heating to 64 ℃, and continuously stirring for 60 minutes to prepare the composite resin;
(2) Preparation of flame-retardant composite filler: under the protection of argon at the temperature, 4-hydroxybenzaldehyde and triethoxy chlorosilane, diethyl ether are mixed according to the mass ratio of 1:3:8, mixing, stirring for 25min at 700r/min, then adding aluminum trichloride with the mass which is 0.02 times that of the 4-hydroxybenzaldehyde, cooling to 2 ℃, and continuously stirring for 8h to prepare formaldehyde phenoxyl triethoxysilane; under the protection of argon, aluminum terbutoxide, formaldehyde phenoxyl triethoxysilane, sodium hydroxide and ethanol are mixed according to the mass ratio of 1:0.6:0.1:2.8, mixing, stirring for 17.5min at 600r/min to obtain matrix solution; under the stirring condition of 25.5 ℃ and 600r/min, absolute ethyl alcohol and deionized water are mixed according to the mass ratio of 1.45: stirring for 17.5min at 0.13 to obtain solution B; dropwise adding a solution B with the mass 1.2 times of that of the solution B into a matrix solution at a titration speed of 50 drops/min under the stirring condition of 1350r/min at the temperature of 25.5 ℃, continuously stirring for 15min after the dropwise adding is finished, adding a H beta zeolite molecular sieve with the mass 0.07 times of that of the matrix solution, heating to 145 ℃, synchronously boosting to 4.25MPa, continuously stirring for 2H, filtering, washing with ethanol and deionized water for 3 times, baking for 2H at 50 ℃, grinding and sieving with a 3000-mesh sieve to prepare the flame-retardant composite filler;
(3) Preparing high-temperature-resistant high-strength engineering plastic: under the protection of argon, the composite resin and the flame-retardant composite filler are mixed according to the mass ratio of 1:0.1 mixing, heating to 25deg.C, and cooling to 3m 3 Introducing hydrogen chloride with the mass of 0.5 times of that of the composite resin per minute, stirring for 48 hours at 600r/min, and mixing according to the mass ratio of 1:3.2:1.2 adding potassium carbonate, water and methylene dichloride, wherein the mass of the potassium carbonate is 1.5 times of that of the composite resin, continuously stirring for 10min, adding glacial acetic acid with the mass of 0.08 times of that of the composite resin, continuously stirring for 16h, continuously adding concentrated sulfuric acid with the mass of 1 time of that of the composite resin, continuously stirring for 48h, and continuously stirring according to the mass ratio of 1:1.4 adding fatty acid amide and dibutyl tin dilaurate, wherein the mass of the fatty acid amide is 0.07 times of that of the composite resin, heating to 55 ℃, continuously stirring for 20min, and carrying out melt extrusion granulation in a single screw extruder at 275 ℃ and 330r/min to prepare the high-temperature-resistant high-strength engineering plastic.
Example 3
(1) Preparation of the composite resin: under the protection of argon, polytetrafluoroethylene, polyacrylonitrile and dimethyl sulfoxide are mixed according to the mass ratio of 1:0.5:2.5, mixing, stirring for 4 hours at 800r/min, dripping diisopropyl peroxydicarbonate with the mass of 0.8 times of polytetrafluoroethylene at 60 drops/min, heating to 65 ℃, and continuously stirring for 61 minutes to prepare the composite resin;
(2) Preparation of flame-retardant composite filler: under the protection of argon at the temperature, 4-hydroxybenzaldehyde and triethoxy chlorosilane, diethyl ether are mixed according to the mass ratio of 1:4:10, mixing, stirring for 30min at 800r/min, then adding aluminum trichloride with the mass of 0.03 times of that of the 4-hydroxybenzaldehyde, cooling to 4 ℃, and continuously stirring for 9h to prepare formaldehyde phenoxyl triethoxysilane; under the protection of argon, aluminum terbutoxide, formaldehyde phenoxyl triethoxysilane, sodium hydroxide and ethanol are mixed according to the mass ratio of 1:0.7:0.17:3, mixing, stirring for 20min at 700r/min to obtain a matrix solution; under the stirring condition of 26 ℃ and 700r/min, absolute ethyl alcohol and deionized water are mixed according to the mass ratio of 1.5: stirring for 20min at 0.14 to obtain solution B; dropwise adding a solution B with the mass 1.4 times of that of the solution B into a matrix solution at a titration speed of 60 drops/min under the stirring condition of 26 ℃ and 1500r/min, continuously stirring for 20min after the dropwise adding is finished, adding a H beta zeolite molecular sieve with the mass 0.08 times of that of the matrix solution, heating to 146 ℃, synchronously boosting to 4.25MPa, continuously stirring for 3H, filtering, washing with ethanol and deionized water for 4 times, baking for 3H at 60 ℃, grinding and sieving with a 4000-mesh sieve, and preparing the flame-retardant composite filler;
(3) Preparing high-temperature-resistant high-strength engineering plastic: under the protection of argon, the composite resin and the flame-retardant composite filler are mixed according to the mass ratio of 1: mixing at 0.15, heating to 30deg.C, and standing for 4m 3 Introducing hydrogen chloride with the mass of 0.6 times of that of the composite resin per minute, stirring for 49 hours at the speed of 700r/min, and mixing according to the mass ratio of 1:3.4:1.3 adding potassium carbonate, water and methylene dichloride, wherein the mass of the potassium carbonate is 1.7 times of that of the composite resin, continuously stirring for 12min, adding glacial acetic acid with the mass of 0.09 times of that of the composite resin, continuously stirring for 17h, continuously adding concentrated sulfuric acid with the mass of 1.2 times of that of the composite resin, continuously stirring for 49h, and continuously stirring according to the mass ratio of 1:1.6 adding fatty acid amide and dibutyl tin dilaurate, wherein the mass of the fatty acid amide is 0.09 times that of the composite resin, heating to 60 ℃, continuously stirring for 25min, and carrying out melt extrusion granulation in a single screw extruder at 300 ℃ and 360r/min to prepare the high-temperature-resistant high-strength engineering plastic.
Comparative example 1
(1) Preparation of the composite resin: under the protection of argon, polytetrafluoroethylene, polyacrylonitrile and dimethyl sulfoxide are mixed according to the mass ratio of 1:0.4:2, mixing, stirring for 3 hours at 700r/min, dripping diisopropyl peroxydicarbonate with the mass of 0.7 times of polytetrafluoroethylene at 50 drops/min, heating to 64 ℃, and continuously stirring for 60 minutes to prepare the composite resin;
(2) Preparation of flame-retardant composite filler: under the protection of argon at the temperature, 4-hydroxybenzaldehyde and triethoxy chlorosilane, diethyl ether are mixed according to the mass ratio of 1:3:8, mixing, stirring for 25min at 700r/min, then adding aluminum trichloride with the mass which is 0.02 times that of the 4-hydroxybenzaldehyde, cooling to 2 ℃, and continuously stirring for 8h to prepare formaldehyde phenoxyl triethoxysilane; under the protection of argon, formaldehyde phenoxyl triethoxysilane, sodium hydroxide and ethanol are mixed according to the mass ratio of 0.6:0.1:2.8, mixing, stirring for 17.5min at 600r/min to obtain matrix solution; under the stirring condition of 25.5 ℃ and 600r/min, absolute ethyl alcohol and deionized water are mixed according to the mass ratio of 1.45: stirring for 17.5min at 0.13 to obtain solution B; dropwise adding a solution B with the mass 1.2 times of that of the solution B into a matrix solution at a titration speed of 50 drops/min under the stirring condition of 1350r/min at the temperature of 25.5 ℃, continuously stirring for 15min after the dropwise adding is finished, adding a H beta zeolite molecular sieve with the mass 0.07 times of that of the matrix solution, heating to 145 ℃, synchronously boosting to 4.25MPa, continuously stirring for 2H, filtering, washing with ethanol and deionized water for 3 times, baking for 2H at 50 ℃, grinding and sieving with a 3000-mesh sieve to prepare the flame-retardant composite filler;
(3) Preparing high-temperature-resistant high-strength engineering plastic: under the protection of argon, the composite resin and the flame-retardant composite filler are mixed according to the mass ratio of 1:0.1 mixing, heating to 25deg.C, and cooling to 3m 3 Introducing hydrogen chloride with the mass of 0.5 times of that of the composite resin per minute, stirring for 48 hours at 600r/min, and mixing according to the mass ratio of 1:3.2:1.2 adding potassium carbonate, water and methylene dichloride, wherein the mass of the potassium carbonate is 1.5 times of that of the composite resin, continuously stirring for 10min, adding glacial acetic acid with the mass of 0.08 times of that of the composite resin, continuously stirring for 16h, continuously adding concentrated sulfuric acid with the mass of 1 time of that of the composite resin, continuously stirring for 48h, and continuously stirring according to the mass ratio of 1:1.4 adding fatty acid amide and dibutyl tin dilaurate, wherein the mass of fatty acid amide is 0.07 times of that of the composite resin, heating to 55deg.C, and stirring for 20min to obtain single screwAnd (3) carrying out melt extrusion granulation at a temperature of 275 ℃ and a speed of 330r/min in a rod extruder to prepare the high-temperature-resistant high-strength engineering plastic.
Comparative example 2
(1) Preparation of the composite resin: under the protection of argon, polytetrafluoroethylene, polyacrylonitrile and dimethyl sulfoxide are mixed according to the mass ratio of 1:0.4:2, mixing, stirring for 3 hours at 700r/min, dripping diisopropyl peroxydicarbonate with the mass of 0.7 times of polytetrafluoroethylene at 50 drops/min, heating to 64 ℃, and continuously stirring for 60 minutes to prepare the composite resin;
(2) Preparation of flame-retardant composite filler: under the protection of argon at the temperature, 4-hydroxybenzaldehyde and triethoxy chlorosilane, diethyl ether are mixed according to the mass ratio of 1:3:8, mixing, stirring for 25min at 700r/min, then adding aluminum trichloride with the mass which is 0.02 times that of the 4-hydroxybenzaldehyde, cooling to 2 ℃, and continuously stirring for 8h to prepare formaldehyde phenoxyl triethoxysilane; under the protection of argon, aluminum terbutoxide, sodium hydroxide and ethanol are mixed according to the mass ratio of 1:0.6:2.8, mixing, stirring for 17.5min at 600r/min to obtain matrix solution; under the stirring condition of 25.5 ℃ and 600r/min, absolute ethyl alcohol and deionized water are mixed according to the mass ratio of 1.45: stirring for 17.5min at 0.13 to obtain solution B; dropwise adding a solution B with the mass 1.2 times of that of the solution B into a matrix solution at a titration speed of 50 drops/min under the stirring condition of 1350r/min at the temperature of 25.5 ℃, continuously stirring for 15min after the dropwise adding is finished, adding a H beta zeolite molecular sieve with the mass 0.07 times of that of the matrix solution, heating to 145 ℃, synchronously boosting to 4.25MPa, continuously stirring for 2H, filtering, washing with ethanol and deionized water for 3 times, baking for 2H at 50 ℃, grinding and sieving with a 3000-mesh sieve to prepare the flame-retardant composite filler;
(3) Preparing high-temperature-resistant high-strength engineering plastic: under the protection of argon, the composite resin and the flame-retardant composite filler are mixed according to the mass ratio of 1:0.1 mixing, heating to 25deg.C, and cooling to 3m 3 Introducing hydrogen chloride with the mass of 0.5 times of that of the composite resin per minute, stirring for 48 hours at 600r/min, and mixing according to the mass ratio of 1:3.2:1.2 adding potassium carbonate, water and methylene dichloride, wherein the mass of the potassium carbonate is 1.5 times of that of the composite resin, continuously stirring for 10min, adding glacial acetic acid with the mass of 0.08 times of that of the composite resin, continuously stirring for 16h, continuously adding concentrated sulfuric acid with the mass of 1 time of that of the composite resin, continuously stirring for 48h, and continuously pressingMass ratio 1:1.4 adding fatty acid amide and dibutyl tin dilaurate, wherein the mass of the fatty acid amide is 0.07 times of that of the composite resin, heating to 55 ℃, continuously stirring for 20min, and carrying out melt extrusion granulation in a single screw extruder at 275 ℃ and 330r/min to prepare the high-temperature-resistant high-strength engineering plastic.
Comparative example 3
(1) Preparation of the composite resin: under the protection of argon, polytetrafluoroethylene, polyacrylonitrile and dimethyl sulfoxide are mixed according to the mass ratio of 1:0.4:2, mixing, stirring for 3 hours at 700r/min, dripping diisopropyl peroxydicarbonate with the mass of 0.7 times of polytetrafluoroethylene at 50 drops/min, heating to 64 ℃, and continuously stirring for 60 minutes to prepare the composite resin;
(2) Preparing high-temperature-resistant high-strength engineering plastic: under the protection of argon, the composite resin is heated to 25 ℃ for 3m 3 Introducing hydrogen chloride with the mass of 0.5 times of that of the composite resin per minute, stirring for 48 hours at 600r/min, and mixing according to the mass ratio of 1:3.2:1.2 adding potassium carbonate, water and methylene dichloride, wherein the mass of the potassium carbonate is 1.5 times of that of the composite resin, continuously stirring for 10min, adding glacial acetic acid with the mass of 0.08 times of that of the composite resin, continuously stirring for 16h, continuously adding concentrated sulfuric acid with the mass of 1 time of that of the composite resin, continuously stirring for 48h, and continuously stirring according to the mass ratio of 1:1.4 adding fatty acid amide and dibutyl tin dilaurate, wherein the mass of the fatty acid amide is 0.07 times of that of the composite resin, heating to 55 ℃, continuously stirring for 20min, and carrying out melt extrusion granulation in a single screw extruder at 275 ℃ and 330r/min to prepare the high-temperature-resistant high-strength engineering plastic.
Comparative example 4
(1) Preparation of flame-retardant composite filler: under the protection of argon at the temperature, 4-hydroxybenzaldehyde and triethoxy chlorosilane, diethyl ether are mixed according to the mass ratio of 1:3:8, mixing, stirring for 25min at 700r/min, then adding aluminum trichloride with the mass which is 0.02 times that of the 4-hydroxybenzaldehyde, cooling to 2 ℃, and continuously stirring for 8h to prepare formaldehyde phenoxyl triethoxysilane; under the protection of argon, aluminum terbutoxide, formaldehyde phenoxyl triethoxysilane, sodium hydroxide and ethanol are mixed according to the mass ratio of 1:0.6:0.1:2.8, mixing, stirring for 17.5min at 600r/min to obtain matrix solution; under the stirring condition of 25.5 ℃ and 600r/min, absolute ethyl alcohol and deionized water are mixed according to the mass ratio of 1.45: stirring for 17.5min at 0.13 to obtain solution B; dropwise adding a solution B with the mass 1.2 times of that of the solution B into a matrix solution at a titration speed of 50 drops/min under the stirring condition of 1350r/min at the temperature of 25.5 ℃, continuously stirring for 15min after the dropwise adding is finished, adding a H beta zeolite molecular sieve with the mass 0.07 times of that of the matrix solution, heating to 145 ℃, synchronously boosting to 4.25MPa, continuously stirring for 2H, filtering, washing with ethanol and deionized water for 3 times, baking for 2H at 50 ℃, grinding and sieving with a 3000-mesh sieve to prepare the flame-retardant composite filler;
(2) Preparing high-temperature-resistant high-strength engineering plastic: under the protection of argon, polytetrafluoroethylene and flame-retardant composite filler are mixed according to the mass ratio of 1:0.1 mixing, heating to 25deg.C, and cooling to 3m 3 Introducing hydrogen chloride with the mass of 0.5 times of that of the composite resin per minute, stirring for 48 hours at 600r/min, and mixing according to the mass ratio of 1:3.2:1.2 adding potassium carbonate, water and methylene dichloride, wherein the mass of the potassium carbonate is 1.5 times of that of the composite resin, continuously stirring for 10min, adding glacial acetic acid with the mass of 0.08 times of that of the composite resin, continuously stirring for 16h, continuously adding concentrated sulfuric acid with the mass of 1 time of that of the composite resin, continuously stirring for 48h, and continuously stirring according to the mass ratio of 1:1.4 adding fatty acid amide and dibutyl tin dilaurate, wherein the mass of the fatty acid amide is 0.07 times of that of the composite resin, heating to 55 ℃, continuously stirring for 20min, and carrying out melt extrusion granulation in a single screw extruder at 275 ℃ and 330r/min to prepare the high-temperature-resistant high-strength engineering plastic.
Effect example
The following table 1 shows the analysis results of the flame resistance, aging resistance, tensile strength, and high temperature resistance of the high temperature resistant high strength engineering plastics prepared by using examples 1 to 3 of the present invention and comparative examples 1 to 4.
TABLE 1
From table 1, it can be found that the high temperature resistant engineering plastics prepared in examples 1, 2 and 3 have strong flame retardance, ageing resistance, tensile strength and high temperature resistance; from comparison of experimental data of examples 1, 2 and 3 and comparative examples 1 and 3, it can be found that the high-temperature-resistant high-strength engineering plastics prepared by using the flame-retardant composite filler prepared by aluminum terbutoxide can form hindered phenol 2, 6-di-tert-butylphenol and aluminum hydroxide-silicon dioxide composite gel, and the prepared high-temperature-resistant high-strength engineering plastics have stronger flame retardance and ageing resistance; from the experimental data of examples 1, 2 and 3 and comparative examples 2 and 3, it can be found that the high-temperature-resistant high-strength engineering plastics prepared from the flame-retardant composite filler prepared from formaldehyde-based phenoxytriethoxysilane can form a hindered phenol 2, 6-di-tert-butylphenol and aluminum hydroxide-silicon dioxide composite gel, and then the high-temperature-resistant high-strength engineering plastics can be prepared, and tristyryl s-triazine can be formed, so that the prepared high-temperature-resistant high-strength engineering plastics have stronger flame retardance, ageing resistance, tensile strength and high-temperature resistance; from the experimental data of examples 1, 2, 3 and comparative example 4, it can be found that the high-temperature-resistant high-strength engineering plastics prepared by using the composite resin can form tristyryl s-triazine, and the prepared high-temperature-resistant high-strength engineering plastics have stronger tensile strength and high-temperature resistance.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. The high-temperature-resistant high-strength engineering plastic is characterized by comprising, by weight, 100-200 parts of composite resin, 5-30 parts of flame-retardant composite filler, 5-18 parts of lubricant and 6-28.8 parts of stabilizer.
2. The engineering plastic with high temperature resistance and high strength according to claim 1, wherein the composite resin is obtained by polymerization of polytetrafluoroethylene and polyacrylonitrile.
3. The high temperature and high strength engineering plastic according to claim 1, wherein the lubricant is fatty acid amide.
4. The high-temperature-resistant high-strength engineering plastic according to claim 1, wherein the flame-retardant composite filler is obtained by mixing aluminum terbutoxide and formaldehyde-based phenoxy triethoxysilane.
5. The engineering plastic with high temperature resistance and high strength according to claim 1, wherein the stabilizer is dibutyl tin dilaurate.
6. The preparation method of the high-temperature-resistant high-strength engineering plastic is characterized by comprising the following preparation steps of:
(1) Preparing composite resin;
(2) Preparing a flame-retardant composite filler;
(3) And (3) preparing the high-temperature-resistant high-strength engineering plastic.
7. The method for preparing the high-temperature-resistant high-strength engineering plastic according to claim 6, which is characterized by comprising the following preparation steps:
(1) Preparation of the composite resin: under the protection of argon, polytetrafluoroethylene, polyacrylonitrile and dimethyl sulfoxide are mixed according to the mass ratio of 1:0.3:1.5 to 1:0.5:2.5, mixing, stirring for 2-4 hours at 600-800 r/min, dripping diisopropyl peroxydicarbonate with the mass of 0.6-0.8 times of polytetrafluoroethylene at 40-60 drops/min, heating to 63-65 ℃, and continuously stirring for 59-61 min to prepare the composite resin;
(2) Preparation of flame-retardant composite filler: under the protection of argon, aluminum terbutoxide, formaldehyde phenoxyl triethoxysilane, sodium hydroxide and ethanol are mixed according to the mass ratio of 1:0.5:0.07:2.6 to 1:0.7:0.17:3 mixing, stirring for 15-20 min at 500-700 r/min to obtain matrix solution; under the stirring condition of 25-26 ℃ and 500-700 r/min, absolute ethyl alcohol and deionized water are mixed according to the mass ratio of 1.4:0.12 to 1.5: stirring for 15-20 min to obtain solution B; dripping 1-1.4 times of solution B into the matrix solution at a titration speed of 40-60 drops/min under the stirring condition of 25-26 ℃ and 1200-1500 r/min, continuously stirring for 10-20 min after dripping, adding 0.06-0.08 times of H beta zeolite molecular sieve into the matrix solution, heating to 144-146 ℃, synchronously boosting to 4.25MPa, continuously stirring for 1-3H, filtering, washing with ethanol and deionized water for 2-4 times, baking for 1-3H at 40-60 ℃, grinding, and sieving with a 2000-4000 mesh sieve to prepare the flame-retardant composite filler;
(3) Preparing high-temperature-resistant high-strength engineering plastic: under the protection of argon, the composite resin and the flame-retardant composite filler are mixed according to the mass ratio of 1:0.05 to 1: mixing 0.15, heating to 20-30 deg.C for 2-4 m 3 Introducing hydrogen chloride with the mass of 0.4-0.6 times of that of the composite resin per minute, stirring for 47-49 hours at 500-700 r/min, and mixing according to the mass ratio of 1:3:1.1 to 1:3.4:1.3 adding potassium carbonate, water and methylene dichloride, wherein the mass of the potassium carbonate is 1.3-1.7 times of that of the composite resin, continuously stirring for 8-12 min, adding glacial acetic acid with the mass of 0.07-0.09 times of that of the composite resin, continuously stirring for 15-17 h, continuously adding concentrated sulfuric acid with the mass of 0.9-1.2 times of that of the composite resin, continuously stirring for 47-49 h, and continuously mixing according to the mass ratio of 1:1.2 to 1:1.6 adding fatty acid amide and dibutyl tin dilaurate, wherein the mass of the fatty acid amide is 0.05-0.09 times of that of the composite resin, heating to 50-60 ℃, continuously stirring for 15-25 min, and carrying out melt extrusion granulation in a single screw extruder at 250-300 ℃ and 300-360 r/min to prepare the high-temperature-resistant high-strength engineering plastic.
8. The method for preparing high-temperature-resistant and high-strength engineering plastics according to claim 7, wherein the preparation method of formaldehyde-based phenoxy triethoxysilane in the step (2) is as follows: under the protection of argon at the temperature, 4-hydroxybenzaldehyde and triethoxy chlorosilane, diethyl ether are mixed according to the mass ratio of 1:2: 6-1: 4:10, stirring for 20-30 min at 600-800 r/min, then adding aluminum trichloride with the mass of 0.01-0.03 times of that of the 4-hydroxybenzaldehyde, cooling to 0-4 ℃, and continuously stirring for 7-9 h to obtain the formaldehyde-phenoxyl triethoxysilane.
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| CN1990538A (en) * | 2005-12-28 | 2007-07-04 | 中国科学技术大学 | High-wearing polytetrafluoroethylene composite material and preparing method thereof |
| CN106700351A (en) * | 2016-11-09 | 2017-05-24 | 嘉科（安徽）密封技术有限公司 | High-strength and high-toughness wear-resistant polytetrafluoroethylene composite material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1990538A (en) * | 2005-12-28 | 2007-07-04 | 中国科学技术大学 | High-wearing polytetrafluoroethylene composite material and preparing method thereof |
| CN106700351A (en) * | 2016-11-09 | 2017-05-24 | 嘉科（安徽）密封技术有限公司 | High-strength and high-toughness wear-resistant polytetrafluoroethylene composite material |
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