CN115260661B - Low-CLTE flame-treatment-free high-modulus material and preparation method and application thereof - Google Patents
Low-CLTE flame-treatment-free high-modulus material and preparation method and application thereof Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 36
- 229920005989 resin Polymers 0.000 claims abstract description 36
- 239000011159 matrix material Substances 0.000 claims abstract description 29
- 239000002994 raw material Substances 0.000 claims abstract description 21
- 239000012745 toughening agent Substances 0.000 claims abstract description 20
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 16
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 16
- 239000002667 nucleating agent Substances 0.000 claims abstract description 16
- 229920005629 polypropylene homopolymer Polymers 0.000 claims abstract description 15
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 11
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 9
- 239000011707 mineral Substances 0.000 claims abstract description 9
- 238000011049 filling Methods 0.000 claims abstract description 7
- 239000002270 dispersing agent Substances 0.000 claims abstract description 5
- 239000000314 lubricant Substances 0.000 claims abstract description 5
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims abstract description 4
- -1 aliphatic carboxylic acid metal compounds Chemical class 0.000 claims description 29
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 16
- 239000000843 powder Substances 0.000 claims description 15
- 229920001577 copolymer Polymers 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 6
- 239000000806 elastomer Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 6
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- 229920005606 polypropylene copolymer Polymers 0.000 claims description 4
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 239000012764 mineral filler Substances 0.000 claims description 3
- 235000021317 phosphate Nutrition 0.000 claims description 3
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 3
- 239000000600 sorbitol Substances 0.000 claims description 3
- 239000000454 talc Substances 0.000 claims description 3
- 229910052623 talc Inorganic materials 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 150000007513 acids Chemical class 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 239000010445 mica Substances 0.000 claims description 2
- 229910052618 mica group Inorganic materials 0.000 claims description 2
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 claims description 2
- 235000010234 sodium benzoate Nutrition 0.000 claims description 2
- 239000004299 sodium benzoate Substances 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 239000010456 wollastonite Substances 0.000 claims description 2
- 229910052882 wollastonite Inorganic materials 0.000 claims description 2
- 239000002023 wood Chemical class 0.000 claims description 2
- 239000004094 surface-active agent Substances 0.000 abstract description 9
- 239000004743 Polypropylene Substances 0.000 description 22
- 229920001155 polypropylene Polymers 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000007792 addition Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 2
- 239000008116 calcium stearate Substances 0.000 description 2
- 235000013539 calcium stearate Nutrition 0.000 description 2
- 238000003851 corona treatment Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000005662 Paraffin oil Substances 0.000 description 1
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 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
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 150000008360 acrylonitriles Chemical class 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- 150000008366 benzophenones Chemical class 0.000 description 1
- 150000001565 benzotriazoles Chemical class 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical class C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 description 1
- 150000003961 organosilicon compounds Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 150000003873 salicylate salts Chemical class 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920006342 thermoplastic vulcanizate Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
-
- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—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
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a low-CLTE flame-treatment-free high-modulus material and a preparation method and application thereof, and belongs to the technical field of materials. The invention discloses a low CLTE flame-treatment-free high-modulus material which comprises the following raw materials in parts by weight: matrix resin: 50-75 parts of toughening agent: 5-20 parts of mineral filling: 25-40 parts of a surfactant: 1-10 parts of nucleating agent: 0.2-1.5 parts of antioxidant: 0.2-1.5 parts of ultraviolet absorber: 0.2-2 parts of lubricant: 0.1-0.3 part of dispersing agent: 0.05-0.1 part; the matrix resin accounts for 55-60% of the total mass of the raw materials, and specifically comprises the following components in mass ratio (4-6): (1-1.5): 1, a homo-polypropylene, a linear low density polyethylene. The invention discloses a preparation method and application thereof in the field of automobile parts.
Description
Technical Field
The invention belongs to the technical field of materials, and relates to a low-CLTE flame-treatment-free high-modulus material, and a preparation method and application thereof.
Background
At present, the use amount of plastic parts in the fields of automobiles and household appliances is continuously increased, and particularly, the use amount of plastic parts with large volume, complex size and structure and surface spraying is continuously increased, for example: an automobile tail door outer plate, a grille, the periphery of a bumper, an electric appliance shell and an electric appliance base. The material has the advantages of good dimensional stability, low linear expansion coefficient and high strength modulus, so the cost is high and the preparation process is complex. The material in the prior art has large size change of parts when the existing material is heated and cooled due to the large size and complex structure of the parts, thereby influencing the assembly and subsequent use of the parts; and the strength of the material is not enough to ensure that the original properties are maintained under high temperature or high strength stress. In addition, in order to increase the appearance of the parts, the parts are usually required to be subjected to surface spraying, and the traditional spraying process is that flame or corona treatment is also required to increase the polarity and free energy of the surfaces of the parts before the parts are sprayed, so that the steps are not beneficial to industrial production, and the efficient preparation of plastic parts with large size and complex structures cannot be realized. Chinese patent application publication No. CN103665544a discloses an isotropic low linear expansion coefficient polypropylene composition and a method for preparing the same, wherein the raw materials comprise 20-98% polypropylene, 2-20% whisker, 0-30% mineral powder, 0-20% toughening agent, 0-5% compatilizer, 0-5% other auxiliary agent; the surface appearance of the product is affected to a certain extent by adding different types and different contents of three-dimensional space structure whiskers, and the linear expansion coefficient of the prepared polypropylene composition is minimized to be 3.2 multiplied by 10 -5 However, the cost of the whisker with the three-dimensional space structure is too high, and in order to adapt to industrial production, low-cost raw materials are generally required. Chinese patent application publication No. CN114507399A discloses a polypropylene material, its preparation method and application, its raw material includes 60-70 portions of homopolypropylene10 to 15 parts of block copolymerized polypropylene, 10 to 30 parts of linear low density polyethylene, 0.2 to 0.5 part of beta-nucleating agent, 0.5 to 1 part of antioxidant and 0.1 to 1 part of light stabilizer; the material has higher notched Izod impact strength but lower flexural modulus, and the linear expansion coefficient of the material is not improved.
Disclosure of Invention
The invention aims at solving the problems existing in the prior art and provides a composite material which has low CLTE (linear expansion coefficient), flame treatment-free property, high strength modulus, high temperature and high pressure resistance and good dimensional stability.
The aim of the invention can be achieved by the following technical scheme:
the low CLTE flame-treatment-free high-modulus material comprises the following raw materials in parts by weight: matrix resin: 50-75 parts of toughening agent: 5-20 parts of mineral filling: 25-40 parts of a surfactant: 1-10 parts of nucleating agent: 0.2-1.5 parts of antioxidant: 0.2-1.5 parts of ultraviolet absorber: 0.2-2 parts of lubricant: 0.1-0.3 part of dispersing agent: 0.05-0.1 part; the matrix resin accounts for 55-60% of the total mass of the raw materials, and specifically comprises the following components in mass ratio (4-6): (1-1.5): 1, a homo-polypropylene, a linear low density polyethylene.
The copolymer polypropylene has good impact property, relatively low shrinkage ratio and good dimensional stability, and meanwhile, the copolymer polypropylene has good rigidity and toughness balance and relatively high proportion of the copolymer polypropylene to the total resin content, so that a better comprehensive effect can be exerted. The homo-polypropylene has a relatively high modulus and a relatively low linear expansion coefficient. The linear low-density polyethylene has higher crystallinity, reduces the linear expansion coefficient of the material, has higher impact property and plays a role in toughening. The three components are cooperated to make the matrix resin have better low linear expansion coefficient, high toughness and high stability.
Preferably, the mass ratio of the total mass of the copolymerized polypropylene and the homopolypropylene to the linear low density polyethylene is (6-7): 1.
preferably, the copolymerized polypropylene in the matrix resin accounts for 65-73%.
Preferably, the molecular weight of the polypropylene copolymer is 20-23 ten thousand, and the melt index is 30g/10min (230 ℃/2.16 kg); the molecular weight of the homo-polypropylene is 15-20 ten thousand, and the melt index is 15g/10min (230 ℃/2.16 kg); the Linear Low Density Polyethylene (LLDPE) has a molecular weight of 10-15 ten thousand and a melt index of 2g/10min (230 ℃ C./2.16 kg).
Preferably, the mass ratio of the toughening agent to the nucleating agent is (9-11): 1.
preferably, the mass ratio of the matrix resin to the toughening agent is (5-100): 1.
Preferably, the toughening agent comprises one or more of ethylene octene copolymer, ethylene propylene diene monomer, hydrogenated styrene-butadiene block copolymer, thermoplastic polyurethane elastomer and thermoplastic vulcanized rubber.
Further preferably, when the toughening agent is an ethylene octene copolymer, the mass ratio of the matrix resin to the toughening agent is (5-20): 1.
further preferably, when the toughening agent is a thermoplastic polyurethane elastomer, the mass ratio of the matrix resin to the toughening agent is (5-10): 1.
still more preferably, when the toughening agent is in the mass ratio of (0.5-2): when the thermoplastic polyurethane elastomer and ethylene octene copolymer are mixed in the ratio of (0.5-2), the mass ratio of the matrix resin to the toughening agent is (6-9): 1.
preferably, the surfactant comprises one or more of maleic anhydride, maleic anhydride grafts, metal oxides, and metal powders.
Further preferably, the metal powder comprises one or more of iron powder, nickel powder, molybdenum powder, copper powder, aluminum powder.
Still more preferably, the metal powder has a particle size of 1200 mesh.
Preferably, the mineral filler comprises one or more of calcium carbonate, talc, mica, wollastonite, and barium sulfate whiskers.
Further preferably, when the mineral is filled with barium sulfate whiskers, the mass ratio of the matrix resin to the barium sulfate whiskers is (1-5): 1.
the addition of the surfactant and the mineral filling can increase the hardness of the material and reduce the impact property of the material, while the addition of the metal powder can improve the surface activity of the material, so that the material can increase the hardness and the flexural modulus and the flexural strength.
Preferably, the nucleating agent comprises one or more of aliphatic carboxylic acid metal compounds, sorbitol benzylidene derivatives, aromatic carboxylic acid metal compounds, organic phosphates, wood acids and derivatives thereof, sodium benzoate, and aluminum bis (p-t-butylbenzoate) carboxylate.
Preferably, the nucleating agent comprises the following components in percentage by mass (0.5-1): (0.5-1): (0.5-1), a mixture of fatty carboxylic acid metal compounds, sorbitol benzylidene derivatives, and organic phosphates.
Further preferably, the nucleating agent is added in an amount of 0.8 to 1.8% of the matrix resin.
Preferably, the antioxidant comprises one or more of a phenol antioxidant and a phosphite antioxidant.
Further preferably, the antioxidant is a mixture of a phenolic antioxidant and a phosphite antioxidant in a mass ratio of (1-3): 1.
Preferably, the ultraviolet absorbent comprises one or more of salicylates, benzophenones, benzotriazoles, substituted acrylonitriles and triazines.
Preferably, the lubricant comprises one or more of calcium stearate, zinc stearate, ethylene bis stearamide, and organosilicon compounds.
Preferably, the dispersant comprises one or more of white oil, mineral oil, paraffin oil and naphthenic oil.
The invention also discloses a preparation method of the low CLTE flame-treatment-free high-modulus material, which comprises the following steps: weighing raw materials, adding components except powder in the raw materials into a high-speed mixer for premixing to obtain premix, adding the powder components for uniform mixing, and then adding the mixture into a double-screw extruder for melt blending extrusion, cooling, granulating and drying.
The invention also discloses an application of the low CLTE flame-treatment-free high-modulus material in the field of automobile parts.
Preferably, the automobile parts include, but are not limited to, automobile tail door panels, grilles, bumper circumferences, electrical housings, electrical bases.
The material prepared by the invention has high strength, high modulus and low linear expansion coefficient, can be used in severe environments with high temperature and high load, has little influence on the dimensional change of parts due to the change of the environmental temperature, and avoids flame or corona treatment required by the traditional spraying process; and the production efficiency is improved while the cost is saved; can be widely applied to automobile tail door panels, grids, the periphery of bumpers, electrical appliance shells, electrical appliance bases and the like.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention adds three types of resins of polypropylene copolymer, polypropylene homopolymer and linear low-density polyethylene into the raw materials simultaneously, and combines other components, so that the prepared material has the properties of high strength, high modulus, high heat resistance, stable size and low linear expansion coefficient without adopting traditional flame treatment.
2. The mass ratio of the three types of resins of the copolymerized polypropylene, the homopolypropylene and the linear low-density polyethylene in the matrix resin is (4-6): (1-1.5): 1, wherein the ratio of the copolymerized polypropylene is 65-73%, so that the prepared material has better comprehensive performance.
3. The invention controls the content of matrix resin to be 55-60% of the total mass of the raw materials so as to ensure the performance of the materials.
4. Ratio of toughening agent to nucleating agent in the present invention
5. The invention adds the surfactant and mineral filling to improve the mechanical property of the material, and particularly when the surfactant is metal powder and the mineral filling is barium sulfate whisker, the invention can play the optimal effect.
Detailed Description
The following are specific examples of the present invention, and the technical solutions of the present invention are further described, but the present invention is not limited to these examples.
The raw materials comprise:
copolymer polypropylene: korea SK, BH3820;
homo-polypropylene: table plastic Ningbo 1124;
linear low density polyethylene: exxon Mobil, 1002KW;
the rest raw materials are conventional commercial products.
Example 1
The raw materials are weighed according to the following proportion, 40 parts of polypropylene copolymer, 10 parts of homopolymerized polypropylene, 8 parts of linear low-density polyethylene, 4 parts of thermoplastic polyurethane elastomer, 3 parts of ethylene octene copolymer, 30 parts of barium sulfate whisker, 5 parts of metal powder (aluminum powder, 1200 meshes), 0.7 part of nucleating agent (NA 11), 0.2 part of phenol antioxidant (antioxidant 1010), 0.1 part of phosphite antioxidant (antioxidant 168), 0.3 part of ultraviolet absorber (531), 0.2 part of lubricant (calcium stearate) and 0.05 part of dispersing agent (white oil).
Then adding the components except powder in the raw materials into a high-speed mixer for premixing to obtain premix, adding the powder components for uniform mixing, then adding into a double-screw extruder for melt blending at 160-220 ℃, and then extruding, cooling, granulating and drying. The properties are shown in Table 1.
Example 2
The difference compared with example 1 is that the matrix resin is 38 parts of copolymerized polypropylene, 12 parts of homopolypropylene, 8 parts of linear low density polyethylene.
Example 3
The difference compared with example 1 is that the matrix resin is 42 parts of copolymerized polypropylene, 8 parts of homo-polypropylene, 8 parts of linear low density polyethylene.
Example 4
The difference compared to example 1 is that the toughening agent is only 7 parts of ethylene octene copolymer.
Example 5
The difference compared to example 1 is that the toughening agent is only 7 parts of thermoplastic polyurethane elastomer.
Example 6
The difference compared to example 1 is that the toughening agent is only 7 parts of thermoplastic vulcanizate.
Example 7
The difference compared to example 1 is that the mineral filler is talc.
Example 8
The difference compared to example 1 is that the surfactant is maleic anhydride.
Example 9
The difference compared to example 1 is that the surfactant is a metal oxide (antimony trioxide).
Example 10
The difference compared to example 1 is that the nucleating agent is added in an amount of 0.5 parts.
Example 11
The difference compared to example 1 is that the nucleating agent is added in an amount of 1 part.
Comparative example 1
The difference compared with example 1 is that the matrix resin is 40 parts of copolymerized polypropylene and 10 parts of homopolypropylene.
Comparative example 2
The difference compared with example 1 is that the matrix resin is 10 parts of copolymerized polypropylene, 40 parts of homopolypropylene, 8 parts of linear low density polyethylene.
Comparative example 3
The difference compared with example 1 is that the matrix resin is 30 parts of copolymerized polypropylene, 20 parts of homopolypropylene, 8 parts of linear low density polyethylene.
Comparative example 4
The difference compared with example 1 is that the matrix resin is 20 parts of copolymerized polypropylene, 20 parts of homopolypropylene, 8 parts of linear low density polyethylene.
Comparative example 5
The difference compared to example 1 is that no nucleating agent is added.
Table 1, performance data sheet
As can be seen from the data in the table, the combination properties when the matrix resin content in examples 1 to 3 was 57.2% were higher than that when the matrix resin content in comparative example 1 was 53.5%, and also higher than that when the proportions of the three resins in comparative examples 2 to 4 were changed; the compounded toughening agent can obtain more excellent properties such as linear expansion coefficient and the like; the barium sulfate whisker is more suitable for preparing high-performance resin compared with conventional mineral filling due to the characteristics of the barium sulfate whisker; when the metal powder is used as a surfactant, the properties such as bending strength and the like can be further improved; when the content of the nucleating agent is 0.8-1.8% of the matrix resin, a good flexural modulus can be obtained without affecting the notched impact properties.
In summary, the matrix resin in the invention accounts for 55-60% of the total mass of the raw materials, and simultaneously comprises three types of resins of copolymerized polypropylene, homo-polymerized polypropylene and linear low-density polyethylene, and the prepared material has the properties of high strength, high modulus, high heat resistance, stable size and low linear expansion coefficient without adopting traditional flame treatment by combining other components.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. The low-CLTE flame-treatment-free high-modulus material is characterized by comprising the following raw materials in parts by weight: matrix resin: 50-75 parts of toughening agent: 5-20 parts of mineral filling: 25-40 parts of nucleating agent: 0.2-1.5 parts of antioxidant: 0.2-1.5 parts of ultraviolet absorber: 0.2-2 parts of lubricant: 0.1-0.3 part of dispersing agent: 0.05-0.1 part;
the matrix resin accounts for 55-60% of the total mass of the raw materials, and the mass ratio of the matrix resin is (4-6): (1-1.5): 1, a blended resin of a polypropylene copolymer, a polypropylene homopolymer, and a linear low density polyethylene;
the mass ratio of the toughening agent is (0.5-2): the thermoplastic polyurethane elastomer and ethylene octene copolymer mixture of (0.5-2), the mass ratio of matrix resin and toughening agent is (6-9): 1, a step of;
the raw materials of the high modulus material further comprise one or more of maleic anhydride, maleic anhydride grafts, metal oxides and metal powder.
2. The low CLTE flame treated high modulus material of claim 1, wherein the mineral filler comprises one or more of calcium carbonate, talc, mica, wollastonite, barium sulfate whiskers.
3. The low CLTE flame treated high modulus material of claim 1, wherein the nucleating agent comprises one or more of aliphatic carboxylic acid metal compounds, sorbitol benzylidene derivatives, aromatic carboxylic acid metal compounds, organic phosphates, wood acids and derivatives thereof, sodium benzoate, and bis (p-t-butylbenzoic acid) carboxyaluminum.
4. The low CLTE flame treated high modulus material of claim 1 wherein the nucleating agent is added in an amount of 1 to 1.8% of the matrix resin.
5. A method of preparing a low CLTE flame treated high modulus material of claim 1, the method comprising: weighing raw materials, adding components except powder in the raw materials into a high-speed mixer for premixing to obtain premix, adding the powder components for uniform mixing, and then adding the mixture into a double-screw extruder for melt blending extrusion, cooling, granulating and drying.
6. Use of a low CLTE flame-treated high modulus material according to claim 1 in the field of automotive parts.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102504411A (en) * | 2011-11-09 | 2012-06-20 | 江苏金发科技新材料有限公司 | Low-linear-expansion-coefficient polypropylene composite and preparation method thereof |
| EP2530117A1 (en) * | 2011-05-30 | 2012-12-05 | Borealis AG | Process for producing polypropylene compounds with low CLTE |
| CN105037929A (en) * | 2015-07-02 | 2015-11-11 | 南京聚隆科技股份有限公司 | High-surface quality and lightweight spray-free polypropylene material and preparation method thereof |
| CN107722446A (en) * | 2017-10-31 | 2018-02-23 | 四川长虹电器股份有限公司 | Polypropylene material and preparation method thereof with high glaze, low linear expansion coefficient |
| CN109575446A (en) * | 2017-09-29 | 2019-04-05 | 合肥杰事杰新材料股份有限公司 | A kind of high-performance polypropylene material and preparation method thereof |
| CN114181458A (en) * | 2021-12-16 | 2022-03-15 | 嘉兴学院 | Spraying-free polypropylene composite material, preparation method and application thereof |
-
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- 2022-07-15 CN CN202210831146.5A patent/CN115260661B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2530117A1 (en) * | 2011-05-30 | 2012-12-05 | Borealis AG | Process for producing polypropylene compounds with low CLTE |
| CN102504411A (en) * | 2011-11-09 | 2012-06-20 | 江苏金发科技新材料有限公司 | Low-linear-expansion-coefficient polypropylene composite and preparation method thereof |
| CN105037929A (en) * | 2015-07-02 | 2015-11-11 | 南京聚隆科技股份有限公司 | High-surface quality and lightweight spray-free polypropylene material and preparation method thereof |
| CN109575446A (en) * | 2017-09-29 | 2019-04-05 | 合肥杰事杰新材料股份有限公司 | A kind of high-performance polypropylene material and preparation method thereof |
| CN107722446A (en) * | 2017-10-31 | 2018-02-23 | 四川长虹电器股份有限公司 | Polypropylene material and preparation method thereof with high glaze, low linear expansion coefficient |
| CN114181458A (en) * | 2021-12-16 | 2022-03-15 | 嘉兴学院 | Spraying-free polypropylene composite material, preparation method and application thereof |
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