CN114425890A - Glass fiber cloth/polypropylene composite material and preparation method and application thereof - Google Patents
Glass fiber cloth/polypropylene composite material and preparation method and application thereof Download PDFInfo
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- CN114425890A CN114425890A CN202011179761.XA CN202011179761A CN114425890A CN 114425890 A CN114425890 A CN 114425890A CN 202011179761 A CN202011179761 A CN 202011179761A CN 114425890 A CN114425890 A CN 114425890A
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- glass fiber
- fiber cloth
- polypropylene
- nano sio
- suspension
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Links
- 239000003365 glass fiber Substances 0.000 title claims abstract description 122
- 239000004744 fabric Substances 0.000 title claims abstract description 115
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 98
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 98
- 239000002131 composite material Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- -1 polypropylene Polymers 0.000 claims abstract description 65
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 61
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 60
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 60
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 60
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 60
- 238000002156 mixing Methods 0.000 claims abstract description 19
- 230000010355 oscillation Effects 0.000 claims abstract description 17
- 239000000126 substance Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000000725 suspension Substances 0.000 claims description 43
- 239000007822 coupling agent Substances 0.000 claims description 34
- 238000001035 drying Methods 0.000 claims description 28
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 17
- 238000012986 modification Methods 0.000 claims description 15
- 230000004048 modification Effects 0.000 claims description 15
- 238000002791 soaking Methods 0.000 claims description 15
- 239000002904 solvent Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 10
- 239000000155 melt Substances 0.000 claims description 9
- 238000001354 calcination Methods 0.000 claims description 8
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 6
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 229920001911 maleic anhydride grafted polypropylene Polymers 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 125000003158 alcohol group Chemical group 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000011152 fibreglass Substances 0.000 claims 8
- 238000010276 construction Methods 0.000 claims 1
- 238000005457 optimization Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 abstract description 2
- 239000002861 polymer material Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 11
- 239000010410 layer Substances 0.000 description 8
- 238000005470 impregnation Methods 0.000 description 7
- 239000003963 antioxidant agent Substances 0.000 description 6
- 230000003078 antioxidant effect Effects 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 238000009775 high-speed stirring Methods 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 1
- PRWJPWSKLXYEPD-UHFFFAOYSA-N 4-[4,4-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)butan-2-yl]-2-tert-butyl-5-methylphenol Chemical compound C=1C(C(C)(C)C)=C(O)C=C(C)C=1C(C)CC(C=1C(=CC(O)=C(C=1)C(C)(C)C)C)C1=CC(C(C)(C)C)=C(O)C=C1C PRWJPWSKLXYEPD-UHFFFAOYSA-N 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 229960001484 edetic acid Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007676 flexural strength test Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012643 polycondensation polymerization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000001132 ultrasonic dispersion Methods 0.000 description 1
- 238000007601 warm air drying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- 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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
- D06M13/51—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond
- D06M13/513—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
-
- 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
-
- 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
- B32B2605/00—Vehicles
- B32B2605/08—Cars
-
- 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
-
- 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
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention relates to a glass fiber cloth/polypropylene composite material in the technical field of high polymer materials, and a preparation method and application thereof. The glass fiber cloth/polypropylene composite material comprises a polypropylene film and glass fiber cloth; the polypropylene film and the glass fiber cloth are alternately superposed; the number of layers of the polypropylene film is A, the number of layers of the glass fiber cloth is B, wherein A is more than or equal to 2; b is more than or equal to 1; A-B is more than or equal to 1; preferably 20.gtoreq.A.gtoreq.2; b is more than or equal to 19 and more than or equal to 1; A-B is more than or equal to 1; the glass fiber cloth is surface modified glass fiber cloth, and preferably, nano SiO is dispersed in an ultrasonic oscillation mode2And mixing nano SiO2And modifying the surface of the glass fiber cloth by a chemical grafting method to obtain the glass fiber cloth. The composite material can obviously improve the interlaminar shear property of the composite material and realize the optimization of the comprehensive mechanical property of the interface; meanwhile, the tensile property and the bending property are obviously improved.
Description
Technical Field
The invention relates to the technical field of high polymer materials, and in particular relates to a glass fiber cloth/polypropylene composite material and a preparation method and application thereof.
Background
The glass fiber reinforced resin matrix composite material is widely applied to the fields of aerospace, automobile industry, petrifaction and the like due to high specific strength, high specific modulus and designability. Among them, the glass fiber reinforced thermoplastic resin-based composite material is popular in the industry and academia due to its advantages of excellent comprehensive mechanical properties, long storage period of prepreg, short molding period of product, recoverability, etc.
In the formation of fiber-reinforced composites, the interfacial phase plays a very critical role in the bonding between the reinforcement phase and the matrix phase, and has varying degrees of influence on the properties of the composite. There are two general methods for interface optimization: fiber surface treatment and matrix modification.
Chinese patent CN111409293A discloses an impregnation method of an ultrasonically reinforced long fiber reinforced polymer composite material and an ultrasonically reinforced long fiber reinforced polymer composite material, wherein an ultrasonic vibration device is added in a melt impregnation die head, the ultrasonic vibration device acts on a polymer melt, ultrasonic vibration drives the vibration of the polymer melt in the melt impregnation die head, the viscosity of the melt is reduced therewith, and the impregnation efficiency and the impregnation degree are improved. The viscosity of the matrix is reduced by ultrasonic vibration, but no chemical bond is formed between the resin and the surface of the glass fiber, so that effective interface bonding is difficult to obtain by a method of treating the glass fiber by using a coupling agent; the invention patent CN1487022A discloses a preparation method of a rare earth modified glass fiber/polypropylene composite material, which adopts a rare earth modifier to carry out surface modification on glass fibers, improves the interface bonding force between the glass fibers and a polymer matrix material, and improves the mechanical property of the composite material, but the adopted rare earth modifier consists of a plurality of components (rare earth compounds, ethanol, ethylene diamine tetraacetic acid, ammonium chloride, nitric acid and urea), and the modification effect on the glass fibers can be ensured only by accurately controlling the reaction conditions.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a glass fiber cloth/polypropylene composite material. In particular to a glass fiber cloth/polypropylene composite material and a preparation method and application thereof.
One of the purposes of the invention is to provide a glass fiber cloth/polypropylene composite material which can comprise a polypropylene film and glass fiber cloth; the polypropylene film and the glass fiber cloth are alternately superposed; the number of the layers of the polypropylene film is A, the number of the layers of the glass fiber cloth is B,
wherein A is more than or equal to 2; b is more than or equal to 1; A-B is more than or equal to 1; preferably 20.gtoreq.A.gtoreq.2; b is more than or equal to 19 and more than or equal to 1; A-B is more than or equal to 1; the glass fiber cloth is surface modified glass fiber cloth, and preferably, nano SiO is dispersed in an ultrasonic oscillation mode2And mixing nano SiO2And modifying the surface of the glass fiber cloth by a chemical grafting method to obtain the glass fiber cloth.
Wherein the content of the first and second substances,
the film thickness of the polypropylene film is 0.01-0.50 mm; preferably 0.05-0.35 mm;
the thickness of the glass fiber cloth is 0.05-6.0 mm; preferably 0.2-1.3 mm;
preferably, the thickness of the glass fiber cloth/polypropylene composite material is 0.05-6.0 mm.
In a specific embodiment, the first and second electrodes are,
the preparation method of the surface modification treatment glass fiber cloth can comprise the following steps:
mixing nano SiO2Adding solvent to prepare nano SiO2A suspension; ultrasonically vibrating the nano SiO2A suspension; immersing glass fiber cloth into the nano SiO2Soaking in the suspension, and drying; then soaking the treated glass fiber cloth in a coupling agent solution, and drying to obtain the glass fiber cloth;
preferably, the preparation method of the surface modification treated glass fiber cloth can comprise the following steps:
(1) preparation of nano SiO2Suspension: mixing nano SiO2Adding into solvent, stirring to obtain nanometer SiO2A suspension; preferably, the stirring speed is 1000-2000 r/min, and the stirring time is 1-2 h;
(2) preparation of a coupling agent solution: adding a coupling agent into a solvent, and uniformly stirring to obtain a coupling agent solution; preferably, the concentration of the coupling agent solution is 0.1-1 wt%, preferably 0.25-0.75 wt%;
(3) nano SiO obtained in step (1)2Carrying out ultrasonic oscillation on the suspension; then soaking the glass fiber cloth into nano SiO2Taking out and drying the suspension;
(4) and (4) soaking the glass fiber cloth treated in the step (3) into a coupling agent solution, taking out and drying to obtain the surface modified glass fiber cloth.
Wherein, the nano SiO2Nano SiO in suspension2The concentration of (B) is 0.05 to 1 wt%, preferably 0.1 to 0.8 wt%, more preferably 0.1 to 0.5 wt%, and further preferably 0.15 to 0.3 wt%.
In the step (1) and the step (2),
the solvent is an alcohol solution, preferably an ethanol solution and/or a polyethylene glycol solution;
the volume concentration of the alcohol solution is 20-95%, preferably 50-75%; more preferably 70% -75%;
in the step (3), the step (c),
the power of the ultrasonic oscillation is 40-360 w, the frequency is 25-100 KHz, preferably the power is 80-120 w, and the frequency is 28-60 KHz; to nano SiO2The time for the suspension to undergo ultrasonic oscillation is 0.5-1.5 h;
immersing glass fiber cloth into nano SiO2The suspension liquid time is 5-30 min;
in the steps (3) and (4),
the drying temperature is 30-120 ℃, preferably 80-100 ℃, and the drying time is 1-6 hours, preferably 2-3 hours;
in the step (4), the time for immersing the coupling agent in the coupling agent solution can be 10-30 min.
The coupling agent can be a silane coupling agent, and is preferably at least one selected from gamma-aminopropyltriethoxysilane or gamma-2, 3-glycidoxy-propyltrimethoxysilane.
The polypropylene film material comprises the following components in percentage by weight of 100 percent of the total weight of the polypropylene film material:
82-95 wt% of polypropylene and 5-18 wt% of compatilizer; preferably 85-90 wt% of polypropylene and 10-15 wt% of compatilizer.
The melt flow rate of the polypropylene is 1-15 g/10min, preferably 2-10 g/10min under the conditions of 230 ℃ and 2.16kg of load; the polypropylene is selected from at least one of isotactic polypropylene, syndiotactic polypropylene and atactic polypropylene; and/or the presence of a gas in the gas,
the compatilizer is maleic anhydride grafted polypropylene and has the density of 0.89-0.96 g/cm3The melting point is 130-180 ℃, and the melt flow rate (230 ℃, 2.16Kg) is 7-200 g/10 min.
The invention also aims to provide a preparation method of the glass fiber cloth/polypropylene composite material, which comprises the following steps:
(1) preparing a polypropylene film: uniformly mixing the components including the polypropylene and the compatilizer according to the using amount to prepare a polypropylene film;
(2) and putting the surface modified glass fiber cloth and the polypropylene film into a mold, and pressing to obtain the glass fiber cloth/polypropylene composite material. The pressing conditions may be: pressing at 160-220 deg.C and 0.5-3 Mpa for 5-20 min.
The invention also aims to provide application of the glass fiber cloth/polypropylene composite material in the fields of automobiles, electronics, communication and buildings.
In the particular practice of the present invention,
one of the purposes of the invention is to provide a glass fiber cloth/polypropylene composite material which can comprise a polypropylene film and glass fiber cloth; the polypropylene film and the glass fiber cloth are alternately superposed;
the number of the layers of the polypropylene film is A, the number of the layers of the glass fiber cloth is B,
wherein A is more than or equal to 2; b is more than or equal to 1; A-B is more than or equal to 1; preferably 20.gtoreq.A.gtoreq.2; b is more than or equal to 19 and more than or equal to 1; A-B is more than or equal to 1; preferably 10 is more than or equal to A and more than or equal to 2, 9 is more than or equal to B and more than or equal to 1; more preferably, 10 is more than or equal to A and more than or equal to 3, and 9 is more than or equal to B and more than or equal to 1;
the glass fiber cloth is surface modified glass fiber cloth, and preferably, nano SiO is dispersed in an ultrasonic oscillation mode2And mixing nano SiO2And modifying the surface of the glass fiber cloth by a chemical grafting method to obtain the glass fiber cloth.
In some implementations of the present invention in some cases,
the film thickness of the polypropylene film can be 0.01-0.50 mm; preferably 0.05-0.35 mm;
the thickness of the glass fiber cloth can be 0.05-6.0 mm; preferably 0.2-1.3 mm;
preferably, the first and second electrodes are formed of a metal,
the thickness of the glass fiber cloth/polypropylene composite material can be 0.05-6.0 mm.
The alternate superposition structure of the glass fiber cloth/polypropylene composite material is to immerse a molten film into the glass fiber cloth; the polypropylene film is not limited to being laid only one layer at each addition, and can be a plurality of layers; the glass fiber cloth can also be laid by putting multiple layers simultaneously during one-time feeding; in addition, the materials can be alternately laid with equal thickness or with unequal thickness; depending on the thickness of the fiber cloth and the thickness of the film and the impregnation effect thereof, the impregnation can be adjusted according to specific needs.
The uniformly dispersed nano particles have excellent specific surface area and high surface activity, and are ideal materials for composite modification. However, if large agglomerates are generated due to uneven dispersion, the agglomerates are equivalent to ordinary fillers, so that the modification effect is greatly reduced, and the dispersion degree of the agglomerates has a great influence on the modification effect of the material. The invention disperses nanometer SiO by ultrasonic oscillation mode on the basis of high-speed stirring2Suspending the solution, and mixing the nano SiO2And modifying the surface of the glass fiber cloth by a chemical grafting method to obtain the glass fiber cloth. The ultrasonic dispersion has the advantages of high quality, high efficiency, environmental protection and the like, and the key point is the cavitation effect, and the cavitation effect of the ultrasonic on the nano SiO2Dispersing and depolymerizing to obtain nano SiO2The dispersion stability in the water phase is obviously improved; silanol generated by the coupling agent after hydrolysis reaction can be mixed with glass fiber and nano SiO2Condensation polymerization of the surface hydroxyl groups to form SiO2Chemically grafted to the surface of the fiber. The invention adopts silane coupling agent to mix nanometer SiO2The grafting of the glass fiber to the surface of the glass fiber can simply and efficiently improve the interfacial property of the composite material, saves the cost and has the possibility of being put into industrial production.
Wherein the content of the first and second substances,
the preparation method of the surface modification treatment glass fiber cloth can comprise the following steps:
mixing nano SiO2Adding solvent to prepare nano SiO2A suspension; ultrasonically vibrating the nano SiO2A suspension; immersing glass fiber cloth into the nano SiO2Soaking in the suspension, and drying; then soaking the treated glass fiber cloth in a coupling agent solution, and drying to obtain the glass fiber cloth;
preferably, the preparation method of the surface modification treatment glass fiber cloth comprises the following steps:
(1) preparation of nano SiO2Suspension: mixing nano SiO2Adding into solvent, stirring to obtain nanometer SiO2A suspension; mechanical stirring can be used specifically; preferably, the stirring speed is 1000-2000 r/min, and the stirring time is 1-2 h;
(2) preparation of a coupling agent solution: adding a coupling agent into a solvent, and uniformly stirring to obtain a coupling agent solution; preferably, the concentration of the coupling agent solution can be 0.1 to 1 wt%, preferably 0.25 wt% to 0.75 wt%, more preferably 0.45 to 0.65 wt%;
(3) nano SiO obtained in step (1)2Carrying out ultrasonic oscillation on the suspension; then soaking the glass fiber cloth into nano SiO2Taking out and drying the suspension;
(4) and (3) soaking the glass fiber cloth treated in the step (3) into the coupling agent solution prepared in the step (2), taking out and drying to obtain the surface modified glass fiber cloth.
Wherein the content of the first and second substances,
the nano SiO2The average particle diameter of the particles is 15-150 nm, and the specific surface area is not less than 150m2/g。
The nano SiO2Nano SiO in suspension2The concentration of (B) may be 0.05 to 1 wt%, preferably 0.1 to 0.8 wt%, more preferably 0.1 to 0.5 wt%, and further preferably 0.15 to 0.3 wt%.
The coupling agent is a silane coupling agent, and can be preferably selected from at least one of gamma-aminopropyltriethoxysilane (silane coupling agent KH550) or gamma-2, 3-glycidoxy-propyltrimethoxysilane (KH 560).
The glass fiber cloth can be pretreated before use; the pretreatment comprises the following steps: calcining the glass fiber cloth (specifically, a muffle furnace can be used); wherein the calcining temperature is 200-400 ℃, and the calcining time is 30-60 min.
Wherein the content of the first and second substances,
in the step (1) and the step (2),
the solvent is an alcohol solution, preferably an ethanol solution and/or a polyethylene glycol solution;
the volume concentration of the solvent can be 20-95% (v/v), and can be preferably 50-75%; more preferably 70 to 75 percent;
in the step (3), the step (c),
the power of the ultrasonic oscillation can be 40-360 w, the frequency can be 25-100 KHz, preferably the power can be 80-120 w, and the frequency can be 28-60 KHz; to nano SiO2The time for the suspension to be subjected to ultrasonic vibration can be 0.5-1.5 h;
immersing glass fiber cloth into nano SiO2The suspension liquid can be kept for 5-30 min;
in the steps (3) and (4),
the drying temperature can be 30-120 ℃, preferably 80-100 ℃, and the drying time can be 1-6 hours, preferably 2-3 hours;
in the above-mentioned (4), the first and second substrates are,
the time for immersing the coupling agent in the solution can be 10-30 min.
Specifically, the preparation method of the surface modification treatment glass fiber cloth can comprise the following steps:
(1) firstly, calcining the glass fiber cloth in a muffle furnace at 200-400 ℃ for 30-60min to remove the original surface treating agent.
(2) Nano SiO2The preparation method of the suspension comprises the following steps: mixing nano SiO2Adding into solvent, stirring with electric stirrer to obtain nanometer SiO2A suspension; preferably, the stirring speed is 1000-2000 r/min, and the stirring time is 1-2 h.
(3) The preparation method of the coupling agent solution comprises the following steps: adding the coupling agent into the solvent, and uniformly stirring.
(4) Mixing the nano SiO obtained by the step (2)2Placing the suspension in an ultrasonic cleaner, and ultrasonically oscillating; then soaking the glass fiber cloth treated in the step (1) into nano SiO2And taking the suspension out for 10-30 min, and drying in an electric heating constant-temperature air blast drying oven. The power of the ultrasonic oscillation can be 40-360 w, the frequency is 25-100 KHz, preferably 80-120 w and the frequency is 28-60 KHz; the drying temperature can be 30-120 ℃, preferably 80-100 ℃, and the drying time can be 1-6 hours, preferably 2-3 hours.
Dispersing nano SiO by adopting an ultrasonic oscillation mode on the basis of high-speed stirring2The interlayer bonding effect of the composite material can be improved; but with nano SiO2The higher the concentration of the suspension, the more serious the agglomeration phenomenon of the nano particles is, and the poorer the interface bonding effect is, thereby influencing the interlaminar shear strength. Nano SiO described in the present application2Nano SiO in suspension2The concentration of (B) may be 0.05 to 1 wt%, preferably 0.1 to 0.8 wt%, more preferably 0.1 to 0.5 wt%, and further preferably 0.15 to 0.3 wt%.
(5) And (3) soaking the glass fiber cloth treated in the step (4) into the coupling agent solution prepared in the step (3) for 10-30 min, taking out, and drying in an electric heating constant-temperature air blast drying oven, wherein the drying temperature can be 30-120 ℃, preferably 80-100 ℃, and the drying time can be 1-6 hours, preferably 2-3 hours. And obtaining the glass fiber cloth with the surface modified.
The polypropylene film material can comprise the following components in percentage by weight of 100 percent of the total weight of the polypropylene film material:
82-95 wt% of polypropylene and 5-18 wt% of compatilizer; preferably 85-90 wt% of polypropylene and 10-15 wt% of compatilizer.
The melt flow rate of the polypropylene can be 1-15 g/10min, preferably 2-10 g/10min under the conditions of 230 ℃ and 2.16kg of load; the polypropylene is selected from at least one of isotactic polypropylene, syndiotactic polypropylene and atactic polypropylene; and/or the presence of a gas in the gas,
the compatilizer can be maleic anhydride grafted polypropylene, and specifically, the density can be 0.89-0.96 g/cm3The melting point can be 130-180 ℃, the melt flow rate (230 ℃, 2.16Kg) can be 7-200 g/10min, and the maleic acid can be usedThe graft ratio of the acid anhydride may be 0.8 to 1.2%.
In some embodiments of the present invention, the polypropylene film material may further include an antioxidant, and the antioxidant is used in an amount of 0.1 to 3 wt% based on the total weight of the polypropylene film material. The antioxidant is one or two of antioxidant 1010, antioxidant 1076, antioxidant 2246, antioxidant CA, antioxidant 626 and antioxidant 636.
The invention also aims to provide a preparation method of the glass fiber reinforced polypropylene composite material, which comprises the following steps:
(1) preparing a polypropylene film: adding the components of the polypropylene and the compatilizer into a high-speed mixer according to the dosage and uniformly mixing to prepare the polypropylene film; specifically, a device commonly used in the art, such as a casting machine, etc., can be used;
(2) and alternately putting the surface modified glass fiber cloth and the polypropylene film into a die, and pressing to obtain the glass fiber cloth/polypropylene composite material.
In the step (2), the pressing conditions are as follows: pressing in a mould press at 160-220 deg.C and 0.5-3 Mpa for 5-20 min.
The invention also aims to provide the application of the glass fiber reinforced polypropylene composite material in the fields of automobiles, electronics, communication and buildings.
Detailed Description
While the present invention will be described in detail with reference to the following examples, it should be understood that the following examples are illustrative of the present invention and are not to be construed as limiting the scope of the present invention.
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
Source of raw materials
Polypropylene, PPB-M02-V, purchased from the chinese petrochemical winnowing petrifaction;
glass fiber cloth, EWR400E-100(400 g/m)2) Purchased from Zhejiang Kyoshi group, Inc.;
maleic anhydride grafted polypropylene, MD 353D, available from dupont, usa; (Density 0.94 g/cm)3Melting Point 136 ℃ and melt flow Rate 8g/10min)
Nano-silica, average particle size: 30nm, specific surface area: 600m2(ii)/g, available from Daidaku island technologies, Inc. of Beijing;
absolute ethanol, B0301002, purchased from beijing chemical plant;
silane coupling agent (3-aminopropyltriethoxysilane), KH550, was purchased from Nanjing Engineers organosilicon materials, Inc.
Examples 1 to 3 and comparative examples 1 to 4
The preparation of the surface modified glass fiber cloth comprises the following steps：
(1) And calcining the glass fiber cloth in a 400 ℃ muffle furnace for 45min to remove the original surface treating agent.
(2) Nano SiO2The preparation method of the suspension comprises the following steps: mixing nano SiO2Adding the mixture into 75 percent ethanol solution to prepare nano SiO with different concentrations2The suspension (see table 1) is stirred in an electric stirrer to prepare the nano SiO2The suspension is stirred at the speed of 1500r/min for 1 h.
(3) The preparation method of the coupling agent solution comprises the following steps: adding the coupling agent KH550 into 75% ethanol solution by volume concentration, and uniformly stirring (the specific concentration is shown in Table 1).
(4) Mixing the nano SiO obtained by the step (2)2Placing the mixed suspension in an ultrasonic cleaner, and oscillating for 1h at the power of 100w and the frequency of 40KHz (no ultrasonic oscillation in comparative examples 1-4); then the glass fiber cloth processed in the step (1) is immersed into the nano SiO prepared in the step (2)2Suspending liquid for 15min, taking out, and placing in electric heaterDrying for 3h at 100 ℃ in a warm air drying oven.
(5) And (3) soaking the glass fiber cloth treated in the step (4) into the KH550 coupling agent solution prepared in the step (3) for 15min, taking out, and drying in an electric heating constant-temperature blast drying oven at 100 ℃ for 3h to obtain the surface-modified glass fiber cloth with the thickness of 0.4 mm.
The specific technical scheme is shown in table 1:
TABLE 1 technical scheme for surface modification treatment of glass fiber
| Mass fraction (Nano SiO 2)% | Mass fraction (KH 550)/%) | Ultrasonic vibration | |
| Comparative example 1 | 0 | 0 | -- |
| Comparative example 2 | 0.5 | 0 | -- |
| Comparative example 3 | 0 | 0.5 | -- |
| Comparative example 4 | 0.5 | 0.5 | -- |
| Example 1 | 0.25 | 0.5 | √ |
| Example 2 | 0.5 | 0.5 | √ |
| Example 3 | 0.75 | 0.5 | √ |
The preparation method of the glass fiber cloth/polypropylene composite material comprises the following steps:
(1) a polypropylene film was prepared, the film thickness being about 0.3 mm. The method comprises the following steps: adding 90 parts by weight of polypropylene, 10 parts by weight of compatilizer and 0.15 part by weight of antioxidant into a high-speed mixer, uniformly mixing, adding into a casting machine, and setting processing conditions to prepare a polypropylene film with the thickness of 0.3 mm.
(2) And (3) alternately putting the 4 layers of glass fiber cloth subjected to surface modification treatment and the 5 layers of polypropylene films into a die, and pressing for 10min at 190 ℃ and 1Mpa in a die press to obtain the glass fiber cloth/polypropylene composite material with the thickness of 2 mm.
Performance testing
The glass fiber cloth/polypropylene composite materials prepared in examples 1 to 3 and comparative examples 1 to 4 were subjected to the following performance tests:
the interlaminar shear strength is measured according to JCT 773-2010 test standard; tensile strength was determined according to the GBT1447-2005 test standard; the flexural strength test is determined according to the GBT1449-2005 test standard; the test results are shown in Table 1.
TABLE 1 test results of Material Properties
| Interlaminar shear strength (MPa) | Tensile Strength (MPa) | Flexural Strength (MPa) | |
| Comparative example 1 | 4.7 | 75 | 79 |
| Comparative example 2 | 8.0 | 98 | 88 |
| Comparative example 3 | 8.2 | 138 | 110 |
| Comparative example 4 | 9.1 | 175 | 130 |
| Example 1 | 11.3 | 315 | 145 |
| Example 2 | 10.5 | 308 | 150 |
| Example 3 | 9.8 | 300 | 140 |
Compared with the comparative examples 1 to 4, the examples 1 to 3 use ultrasonic oscillation and chemical grafting to process the nano SiO2The surface of the fiber is modified, so that the interlaminar shear performance of the composite material can be obviously improved, and the optimization of the comprehensive mechanical property of the interface is realized; meanwhile, the tensile property and the bending property are obviously improved.
Example 1 Nano SiO2Nano SiO in suspension2Best dispersion, nano SiO in example 22Nano SiO of suspension2A small amount of aggregates; example 3 Nano SiO2The suspension presents nano SiO2Large areas of agglomerates. Example 3 use of 0.75 wt% nano SiO2Concentration, nano SiO2Approaching the limit of dispersion in ethanol solution, increasing the concentration does not result in better dispersion, but rather results in large agglomerates of small particles. The formation of large-scale aggregates can lead to nano SiO2The glass fiber is unevenly distributed on the surface of the glass fiber and cannot be well dispersed on a single layer, so that the interface bonding performance of the composite material is influenced, and the effect of the final product is not as good as that of the nano SiO2The effect at lower concentrations, but also the performance is significantly improved compared to the comparative examples.
Claims (12)
1. A glass fiber cloth/polypropylene composite material is characterized by comprising a polypropylene film and glass fiber cloth; the polypropylene film and the glass fiber cloth are alternately superposed; the number of the layers of the polypropylene film is A, the number of the layers of the glass fiber cloth is B,
wherein A is more than or equal to 2; b is more than or equal to 1; A-B is more than or equal to 1; preferably 20.gtoreq.A.gtoreq.2; b is more than or equal to 19 and more than or equal to 1; A-B is more than or equal to 1;
the glass fiber cloth is surface modified glass fiber cloth, and preferably, nano SiO is dispersed in an ultrasonic oscillation mode2And mixing nano SiO2And modifying the surface of the glass fiber cloth by a chemical grafting method to obtain the glass fiber cloth.
2. The fiberglass cloth/polypropylene composite of claim 1, wherein:
the film thickness of the polypropylene film is 0.01-0.50 mm; preferably 0.05-0.35 mm;
the thickness of the glass fiber cloth is 0.05-6.0 mm; preferably 0.2-1.3 mm;
preferably, the first and second electrodes are formed of a metal,
the thickness of the glass fiber cloth/polypropylene composite material is 0.05-6.0 mm.
3. The fiberglass cloth/polypropylene composite of claim 1, wherein:
the preparation method of the surface modification treatment glass fiber cloth comprises the following steps:
mixing nano SiO2Adding solvent to prepare nano SiO2A suspension; ultrasonically vibrating the nano SiO2A suspension; immersing glass fiber cloth into the nano SiO2Soaking in the suspension, and drying; then soaking the treated glass fiber cloth in a coupling agent solution, and drying to obtain the glass fiber cloth;
preferably, the preparation method of the surface modification treatment glass fiber cloth comprises the following steps:
(1) preparation of nano SiO2Suspension: mixing nano SiO2Adding into solvent, stirring to obtain nanometer SiO2A suspension;preferably, the stirring speed is 1000-2000 r/min, and the stirring time is 1-2 h;
(2) preparation of a coupling agent solution: adding a coupling agent into a solvent, and uniformly stirring to obtain a coupling agent solution; preferably, the concentration of the coupling agent solution is 0.1-1 wt%, preferably 0.25-0.75 wt%;
(3) nano SiO obtained in step (1)2Carrying out ultrasonic oscillation on the suspension; then soaking the glass fiber cloth into nano SiO2Taking out and drying the suspension;
(4) and (4) soaking the glass fiber cloth treated in the step (3) into a coupling agent solution, taking out and drying to obtain the surface modified glass fiber cloth.
4. The fiberglass cloth/polypropylene composite of claim 3, wherein:
the nano SiO2Nano SiO in suspension2The concentration of (B) is 0.05 to 1 wt%, preferably 0.1 to 0.8 wt%, more preferably 0.1 to 0.5 wt%, and further preferably 0.15 to 0.3 wt%.
5. The fiberglass cloth/polypropylene composite of claim 3, wherein:
in the step (1) and the step (2),
the solvent is an alcohol solution, preferably an ethanol solution and/or a polyethylene glycol solution;
the volume concentration of the alcohol solution is 20-95%, preferably 50-75%; more preferably 70% -75%;
in the step (3), the step (c),
the power of the ultrasonic oscillation is 40-360 w, the frequency is 25-100 KHz, preferably the power is 80-120 w, and the frequency is 28-60 KHz; to nano SiO2The time for the suspension to undergo ultrasonic oscillation is 0.5-1.5 h;
immersing glass fiber cloth into nano SiO2The suspension liquid time is 5-30 min;
in the steps (3) and (4),
the drying temperature is 30-120 ℃, preferably 80-100 ℃, and the drying time is 1-6 hours, preferably 2-3 hours;
in the step (4), the step of (C),
the time for immersing the coupling agent in the coupling agent solution is 10-30 min.
6. The fiberglass cloth/polypropylene composite of claim 3, wherein:
the coupling agent is a silane coupling agent, preferably at least one selected from gamma-aminopropyltriethoxysilane or gamma-2, 3-glycidoxy-propyltrimethoxysilane.
7. The fiberglass cloth/polypropylene composite of claim 3, wherein:
the glass fiber cloth is pretreated before use; the pretreatment comprises the following steps: calcining the glass fiber cloth; wherein the calcining temperature is 200-400 ℃, and the calcining time is 30-60 min.
8. The fiberglass cloth/polypropylene composite of claim 1, wherein:
the polypropylene film material comprises the following components in percentage by weight of 100 percent of the total weight of the polypropylene film material:
82-95 wt% of polypropylene and 5-18 wt% of compatilizer; preferably 85-90 wt% of polypropylene and 10-15 wt% of compatilizer.
9. The fiberglass cloth/polypropylene composite of claim 8, wherein:
the melt flow rate of the polypropylene is 1-15 g/10min, preferably 2-10 g/10min under the conditions of 230 ℃ and 2.16kg of load; the polypropylene is selected from at least one of isotactic polypropylene, syndiotactic polypropylene and atactic polypropylene;
and/or the presence of a gas in the gas,
the compatilizer is maleic anhydride grafted polypropylene and has the density of 0.89-0.96 g/cm3The melting point is 130-180 ℃, and the melt flow rate (230 ℃, 2.16K)g) Is 7 to 200g/10 min.
10. The method for preparing a glass fiber cloth/polypropylene composite material according to any one of claims 1 to 9, comprising the steps of:
(1) preparing a polypropylene film: uniformly mixing the components including the polypropylene and the compatilizer according to the using amount to prepare a polypropylene film;
(2) and putting the surface modified glass fiber cloth and the polypropylene film into a mold, and pressing to obtain the glass fiber cloth/polypropylene composite material.
11. The method for preparing a glass fiber cloth/polypropylene composite material according to claim 10, wherein:
the pressing conditions are as follows: pressing at 160-220 deg.C and 0.5-3 Mpa for 5-20 min.
12. Use of the glass fiber cloth/polypropylene composite material according to any one of claims 1 to 9 or the composite material prepared by the preparation method according to claim 10 or 11 in the fields of automobiles, electronics, communication and construction.
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