CN1292021C - High fluidity nano talcum powder modified polypropylene composite material and its preparation method - Google Patents
High fluidity nano talcum powder modified polypropylene composite material and its preparation method Download PDFInfo
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- CN1292021C CN1292021C CN 03142003 CN03142003A CN1292021C CN 1292021 C CN1292021 C CN 1292021C CN 03142003 CN03142003 CN 03142003 CN 03142003 A CN03142003 A CN 03142003A CN 1292021 C CN1292021 C CN 1292021C
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Abstract
The present invention relates to a high-fluidity polypropylene composite material modified by nanometer talcum powder, which is mainly prepared by blending and extruding polypropylene resin, grafted and modified polypropylene resin, a rubber toughening agent, a coupling agent and nanometer talcum powder through a screw extruding machine group, wherein the size of the nanometer talcum powder is from 30 to 120 nm; the impact strength and the breaking elongation rate of the composite material are obviously improved with respect to those of a polypropylene composite material in which an inorganic material is used as a filling material. The preparation method of the high-fluidity polypropylene composite material has the advantages of simplicity and easy execution. The composite material of the present invention is suitable for the manufacture of products, such as front safety levers, back safety levers, fans, heaters, fluid pump parts, etc., in automobile industry and aircraft industry.
Description
Technical field
The present invention relates to a kind of polypropylene composite material and preparation method thereof, particularly a kind of nano composite material of being formed by graft polypropylene, rubber toughening agent and acrylic resin etc. and preparation method thereof.
Background technology
Polypropylene is because abundant raw material, low price, and comprehensive mechanical property is good, and easily advantage such as machine-shaping has obtained widespread use in fields such as furniture, chemical industrial product, packing and transporting materials.Whole world polypropylene annual production at present surpasses 1,910 ten thousand tons, is only second to polyethylene and is positioned at second of general-purpose plastics.Polypropylene is a synthetic resins with the fastest developing speed in the thermoplastics, and particularly the consumption aspect automotive industry, apparatus, furniture is in quick increase.The power that promotes the polypropylene development is the exploitation of performance resins and the continuous decline of cost, the wherein exploitation of new processing units and the development of forming technique, particularly adopt various modified methods to improve polyacrylic over-all properties, increased the competitive capacity of polypropylene and thermoplastic resin and even engineering plastics.
Product design in automobile and the household electric appliances is thin to complex-shaped, wall, the direction of light weight develops.This plastic material that is used for making these plastics with regard to inevitable requirement possesses performances such as good mobility, high impulse strength, high rigidity, surface hardness height, molding shrinkage be low.Have only the flowability that improves product could guarantee good cast molding performance.
Although the general purpose polypropylene resin has numerous advantages, it still has the some shortcomings part.Shortcomings such as not enough and low-temperature impact-resistant intensity is low as the resin rigidity.Must polyacrylic performance be could improve by modification, its work-ing life and broadened application scope prolonged.
The MODIFICATION OF POLYPROPYLENE method is divided into chemical modification and physically modified.Chemical modification is meant the molecular chain structure that changes polypropylene material, thereby improves material property.Physically modified then is meant by changing the higher order structure of polypropylene material, to reach the purpose of improving material property.Physically modified mainly comprises: several big classes such as blending and modifying, filling-modified, compound enhancing, surface modification.Blending and modifying is the easiest and fruitful method of polymer modification.It is meant that two or more polymer materials, inorganic materials and auxiliary agent carry out mechanical blending at a certain temperature, finally form the process of uniform novel material on a kind of macroscopic view.
As the mechanical blending method, someone had applied for once that " with glass fiber-reinforced polypropene composition " by name (number of patent application was: 85102042), it is that a kind of employing is glass fiber-reinforced, and in mechanical property, rigidity, in appearance the polypropene composition of certain improvement arranged, it mainly is by fusion and mediates following at least a kind of mixture and make: 1) by the modified polypropylene resin of unsaturated carboxylic acid or its acid anhydride or contain 5 parts or the more modified polypropylene resin by unsaturated carboxylic acid or its acid anhydride by weight; 2) polyamide resin that makes of the polycondensation by m-xylene diamine and hexanodioic acid; 3) glass fibre.But the existing main limitation of above-mentioned composition is: will cause material impact strength degradation, elongation at break decline and product surface part glass emergence on the surface after the polypropylene glass strengthens and bad order.
Summary of the invention
The present invention mainly has been to solve polypropylene in the past and has filled a degradation difficult problem under the impact strength decreased brought after the mineral filler, the elongation at break when having improved rigidity and dimensional stability.
The present invention also solves the technical problem that polypropylene in the past fills that the rheological that is produced after the mineral filler is relatively poor, small-size effect is not good enough etc. simultaneously.
Above-mentioned purpose of the present invention mainly at first is to select for use and handle by nano level is talcous, again the technical schemes such as coordination proportioning of the selection of acrylic resin and each recipe ingredient are achieved: a kind of high workability nanomete talc powder modified polypropylene composite material, its each component proportioning (weight ratio, down together) is:
Polypropylene is 100 parts
Graft polypropylene is 2-22 part
Rubber toughening agent is 5-30 part
Dispersion agent is 0.5-5 part
Coupling agent is that 0.5-7 part and nanomete talc powder are 20-65 part.
As preferably, the optimal components ratio of above-mentioned component (weight ratio, down with) is:
Polypropylene is 100 parts
Graft polypropylene is 5-16 part
Rubber toughening agent is 10-24 part
Dispersion agent is 1-3 part
Coupling agent is that 1-3 part and nanomete talc powder are 30-55 part.
As preferably, described rubber toughening agent can be selected at least a in ethylene-propylene rubber(EPR) (EPR), terpolymer EP rubber (EPDM), polyolefin elastomer (POE) or the divinyl rubber for use.
As preferably, described graft polypropylene is that the method by fusion-grafting is grafted to the graft polypropylene that forms on the polypropylene with acid grafted monomer or alkaline grafted monomer.Wherein acid grafted monomer comprises acrylic monomer, methacrylic monomer, maleic anhydride etc.; The alkalescence grafted monomer comprises glycidyl methacrylate, vinylformic acid dimethylamino ester etc.
As preferably, described dispersion agent mainly is meant hydro carbons lubricant and aliphatic amide series lubricant agent.Wherein the hydro carbons lubricant is polyethylene wax, clorafin, microcrystalline wax etc.; The aliphatic amide series lubricant agent is EBO (N, the two oleylamide of N`-ethylene), EBS (N, N`-ethylene bis stearamide) etc.It mainly acts on is the surface polarity (comprising energy state) that is used for reducing nanoparticle, eliminates the surface charge of particle, thereby improves the avidity and the dispersion situation of improving nanomete talc powder of nanoparticle organic phase.
As preferably, described nanomete talc powder size: 30～120nm.Utilize the specific surface area of nanomete talc powder big, surface atom has very strong chemically reactive, and surface effects and small-size effect by nanoparticle, they can with macromole generation bonding action, improve intermolecular linkage force, thereby improved the performances such as intensity, toughness and flowability of matrix material.
As preferably, described coupling agent mainly is meant silane coupling agent and titante coupling agent.Silane coupling agent comprises γ-An Bingjisanyiyangjiguiwan (KH-550), γ-glycidyl ether oxygen propyl trimethoxy silicane (KH-560), N-β-(aminoethyl)-γ-An Bingjisanjiayangjiguiwan (KH-792), Beta-methyl acryloxy propyl trimethoxy silicane (KH-570) etc.Titante coupling agent then comprises monoalkoxytitanates coupling agent (NDZ-101), monoalkoxy lipid acid titanate coupling agent (NDZ-130), monoalkoxy phosphoric acid ester titanate coupling agent (NDZ-102), monoalkoxy lipid acid titanate coupling agent (NDZ-130), corrdination type phosphorous acid ester coupling agent (NDZ-401), chelating type tetra-sodium titanate coupling agent (NDZ-311) etc.The action principle of coupling agent: the chemical bonding of the terminal functionality by coupling agent and the groups such as hydroxyl on talcum powder surface, reduced talcous wetting ability, improve its lipophilicity, thereby increased the consistency of talcum powder and acrylic resin.
Making method of the present invention is: it is characterized in that it comprises following process:
A, batch mixing process: polypropylene, graft polypropylene, rubber toughening agent, coupling agent and other component were mixed 6～10 minutes through the high mixer high-speed stirring in proportion.
B, talcum powder preprocessing process: at first 30 kilograms of talcum powder being joined and setting Heating temperature is in 110 ℃ the high mixer, the low rate start high mixer.Add 0.6～1.2 kilogram of coupling agent high-speed stirring processing of dilute 30 minutes after the material temperature rise to 80 ℃ again.
C, extrusion: the mixture that mixture that step a is obtained and step b obtain is sent into melt blending and extruding pelletization in twin screw or the reciprocation type list screw extruder respectively by the f of delicate metering system.Each section screw rod controlled temperature is between 170-235 ℃, and screw slenderness ratio must be more than or equal to 32, and the residence time of mixture in extrusion equipment is controlled at 8-40 second.
As preferably, it is to adopt the twin screw extruder group of the weight-loss metering system that is equipped with the accurate side direction feeding of two covers above (comprising two covers) or the extrusion equipment of reciprocation type single screw extrusion machine group formation to carry out the operation of mechanical blending method, the screw slenderness ratio of its extrusion equipment is more than or equal to 32, and each section screw rod controlled temperature is between 170-220 ℃.
As preferably, the employed thinner of coupling agent is white oil or alcohol and to adopt weight ratio be dilution in 1: 1 among its step b.
The present invention is by selecting suitable acrylic resin for use and adopting rubber toughening agent that polypropylene is carried out toughening modifying to improve the shock strength and the low-temperature flexibility of matrix material, particularly fill simultaneously nanomete talc powder and the bonding by coupling agent, dispersion agent and dissemination improving the rigidity and the dimensional stability of material, thereby obtained having polypropylene composite material than high workability, intensity height and good toughness.Matrix material of the present invention is applicable to makes automobile and airplane industry such as products such as front and back safety lever, inside gadget, fan, well heater and fluid pump component.
Contrast similar general purpose material performance: melting index is 3～6g/10min, and shock strength is 410J/m, and flexural strength is 36MPa, and elongation at break is 240%.Above mechanical test adopts the conventionally test method.
Therefore, simple, the easy row of preparation method's operation of high workability nanomete talc powder modified polypropylene composite material of the present invention, and cost of manufacture is lower.The prepared high workability nanomete talc powder modified polypropylene composite material that goes out is that the like product of weighting material is greatly improved on flowability and toughness with the inorganic materials with other relatively, and the resistance to impact shock of described material and elongation at break etc. have all had significantly and improve.
Description of drawings
As Fig. 1 is the preparation flow figure of high workability nanomete talc powder modified polypropylene composite material.
Embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment 1: the nanomete talc powder that with mean sizes is 30-120nm is earlier put in the high mixer (setting Heating temperature is 110 ℃) for 30 kilograms.The low rate start high mixer waits to expect to add after the temperature rise to 80 ℃ 0.8 kilogram of γ-An Bingjisanyiyangjiguiwan (KH-550) of diluting with white oil (wherein 0.4 kilogram of white oil, 0.4 kilogram of KH-550) again, and high-speed stirring handles that discharging obtains mixture A2 after 30 minutes; With weight ratio be simultaneously: polypropylene is 100 parts, the methyl methacrylate-grafted polypropylene is 15 parts, and polyolefin elastomer (POE) is 20 parts, 2 parts of γ-An Bingjisanyiyangjiguiwans (KH-550), microcrystalline wax is 4 parts, and above-mentioned each material is by the mixed mixture A1 that obtains of high mixer; Again mixture A1 and A2 are sent into twin screw or reciprocation type list screw extruder by the delicate metering device.A1 is set and A2 feeding ratio is 141: 50 by feeding control.Material under screw rod transmission and shearing action, fully plasticizing, fusion, compound, again through extruding, tie rod, cooling, pelletizing, oven dry and packing.The concrete data of the product that obtains are: melting index is 8.9g/10min, test condition: 190 ℃, and load 2.16Kg; Flexural strength is 49.1MPa, and shock strength is 439J/m, and elongation at break is 268%.
Embodiment 2: the nanomete talc powder that with mean sizes is 30-120nm is earlier put in the high mixer (setting Heating temperature is 110 ℃) for 30 kilograms.The low rate start high mixer, Deng adding 0.8 kilogram of N-β-(aminoethyl)-γ-An Bingjisanjiayangjiguiwan (KH-792) of diluting with white oil (0.4 kilogram of white oil wherein after the material temperature rise to 80 ℃ again, 0.4 kilogram KH-792), high-speed stirring handles that discharging obtains mixture A2 after 30 minutes; With weight ratio be simultaneously: polypropylene is 100 parts, the butyl acrylate graft polypropylene is 8 parts, N-β-(aminoethyl)-γ-An Bingjisanjiayangjiguiwan (KH-792) is 4 parts, ethylene-propylene rubber(EPR) (EPR) is 24 parts, polyethylene wax is 1.3 parts, and aforementioned each material is by the mixed mixture A1 that obtains of high mixer; Again mixture A1 and A2 are sent into twin screw or reciprocation type list screw extruder by the delicate metering device.A1 is set and A2 feeding ratio is 137.3: 35 by feeding control.Material under screw rod transmission and shearing action, fully plasticizing, fusion, compound, again through extruding, tie rod, cooling, pelletizing, oven dry and packing.The concrete data of the product that obtains are: melting index is 9.5g/10min, test condition: 190 ℃, and load 2.16Kg.Flexural strength is 50.6MPa, and shock strength is 454J/m, and elongation at break is 291%.
Embodiment 3: the nanomete talc powder that with mean sizes is 30-120nm is earlier put in the high mixer (setting Heating temperature is 110 ℃) for 30 kilograms.The low rate start high mixer, Deng adding 0.6 kilogram of γ-glycidyl ether oxygen propyl trimethoxy silicane (KH-560) of diluting with white oil (0.3 kilogram of white oil wherein after the material temperature rise to 80 ℃ again, 0.3 kilogram KH-560), high-speed stirring handles that discharging obtains mixture A2 after 30 minutes; With weight ratio be simultaneously: polypropylene is 100 parts, the pentaerythritol triacrylate graft polypropylene is 5 parts, polyolefin elastomer (POE) is 8 parts, γ-glycidyl ether oxygen propyl trimethoxy silicane (KH-560) is 2.5 parts, EBO (N, the two oleylamide of N`-ethylene) be 0.8 part, aforementioned each material is by the mixed mixture A1 that obtains of high mixer; Again mixture A1 and A2 are sent into twin screw or reciprocation type list screw extruder by the delicate metering device.A1 is set and A2 feeding ratio is 116.3: 20 by feeding control.Material under screw rod transmission and shearing action, fully plasticizing, fusion, compound, again through extruding, tie rod, cooling, pelletizing, oven dry and packing.The concrete data of the product that obtains are: melting index is 9.1g/10min, test condition: 190 ℃, and load 2.16Kg.Flexural strength is 52.1MPa, and shock strength is 441J/m, and elongation at break is 342%.
Embodiment 4: the nanomete talc powder that with mean sizes is 30-120nm is earlier put in the high mixer (setting Heating temperature is 110 ℃) for 30 kilograms.The low rate start high mixer, Deng adding 0.4 kilogram of monoalkoxy lipid acid titanate coupling agent (NDZ-130) of diluting with alcohol (0.2 kilogram of alcohol wherein after the material temperature rise to 80 ℃ again, 0.2 kilogram NDZ-130), high-speed stirring handles that discharging obtains mixture A2 after 30 minutes; With weight ratio be simultaneously: polypropylene is 100 parts, the glycidyl methacrylate graft polypropylene is 18 parts, terpolymer EP rubber (EPDM) is 30 parts, monoalkoxy lipid acid titanate coupling agent (NDZ-130) is 3 parts, clorafin is 5.0 parts, and aforementioned each material is by the mixed mixture A1 that obtains of high mixer; Again mixture A1 and A2 are sent into twin screw or reciprocation type list screw extruder by the delicate metering device.A1 is set and A2 feeding ratio is 156: 28 by feeding control.Material under screw rod transmission and shearing action, fully plasticizing, fusion, compound, again through extruding, tie rod, cooling, pelletizing, oven dry and packing.The concrete data of the product that obtains are: melting index is 10.0g/10min, test condition: 190 ℃, and load 2.16Kg.Flexural strength is 52.7MPa, and shock strength is 483J/m, and elongation at break is 339%.
Embodiment 5: the nanomete talc powder that with mean sizes is 30-120nm is earlier put in the high mixer (setting Heating temperature is 110 ℃) for 30 kilograms.The low rate start high mixer, Deng adding 0.4 kilogram of chelating type tetra-sodium titanate coupling agent diluting with alcohol (0.2 kilogram of alcohol wherein after the material temperature rise to 80 ℃ again, 0.2 kilogram chelating type tetra-sodium titanate coupling agent), high-speed stirring handles that discharging obtains mixture A2 after 30 minutes; With weight ratio be simultaneously: polypropylene is 100 parts, and maleic anhydride inoculated polypropylene is 2 parts, and ethylene-propylene rubber(EPR) (EPR) is 10 parts, chelating type tetra-sodium titanate coupling agent is 0.5 part, EBS (N, N`-ethylene bis stearamide) is 2.5 parts, and aforementioned each material is by the mixed mixture A1 that obtains of high mixer; Again mixture A1 and A2 are sent into twin screw or reciprocation type list screw extruder by the delicate metering device.A1 is set and A2 feeding ratio is 115: 45 by feeding control.Material under screw rod transmission and shearing action, fully plasticizing, fusion, compound, again through extruding, tie rod, cooling, pelletizing, oven dry and packing.The concrete data of the product that obtains are: melting index is 8.9g/10min, test condition: 190 ℃, and load 2.16Kg.Flexural strength is 48.0MPa, and shock strength is 431J/m, and elongation at break is 287%.
Embodiment 6: the nanomete talc powder that with mean sizes is 30-120nm is earlier put in the high mixer (setting Heating temperature is 110 ℃) for 30 kilograms.The low rate start high mixer, Deng adding the monoalkoxy phosphoric acid ester titanate coupling agent (NDZ-102) that 1.2 white oils that diluted with alcohol diluted (0.6 kilogram of alcohol wherein after the material temperature rise to 80 ℃ again, 0.6 kilogram NDZ-102), high-speed stirring handles that discharging obtains mixture A2 after 30 minutes; With weight ratio be simultaneously: polypropylene is 100 parts, maleic anhydride inoculated polypropylene is 9 parts, and ethylene-propylene rubber(EPR) is 16 parts, and monoalkoxy phosphoric acid ester titanate coupling agent (NDZ-102) is 1 part, microcrystalline wax is 1.8 parts, and aforementioned each material is by the mixed mixture A1 that obtains of high mixer; Again mixture A1 and A2 are sent into twin screw or reciprocation type list screw extruder by the delicate metering device.A1 is set and A2 feeding ratio is 127.8: 30 by feeding control.Material under screw rod transmission and shearing action, fully plasticizing, fusion, compound, again through extruding, tie rod, cooling, pelletizing, oven dry and packing.The concrete data of the product that obtains are: melting index is 9.6g/10min, test condition: 190 ℃, and load 2.16Kg.Flexural strength is 50.8MPa, and shock strength is 447J/m, and elongation at break is 327%.
Embodiment 7: the nanomete talc powder that with mean sizes is 30-120nm is earlier put in the high mixer (setting Heating temperature is 110 ℃) for 30 kilograms.The low rate start high mixer, Deng adding 0.6 kilogram of Beta-methyl acryloxy propyl trimethoxy silicane (KH-570) of diluting with white oil (0.3 kilogram of white oil wherein after the material temperature rise to 80 ℃ again, 0.3 kilogram KH-570), high-speed stirring handles that discharging obtains mixture A2 after 30 minutes; With weight ratio be simultaneously: polypropylene is 100 parts, the butyl acrylate graft polypropylene is 22 parts, terpolymer EP rubber (EPDM) is 5 parts, Beta-methyl acryloxy propyl trimethoxy silicane (KH-570) is 7 parts, EBO (N, the two oleylamide of N`-ethylene) be 0.5 part, aforementioned each material is by the mixed mixture A1 that obtains of high mixer; Again mixture A1 and A2 are sent into twin screw or reciprocation type list screw extruder by the delicate metering device.A1 is set and A2 feeding ratio is 134.5: 25 by feeding control.Material under screw rod transmission and shearing action, fully plasticizing, fusion, compound, again through extruding, tie rod, cooling, pelletizing, oven dry and packing.The concrete data of the product that obtains are: melting index is 10.1g/10min, test condition: 190 ℃, and load 2.16Kg.Flexural strength is 51.7MPa, and shock strength is 430J/m, and elongation at break is 338%.
Embodiment 8: the nanomete talc powder that with mean sizes is 30-120nm is earlier put in the high mixer (setting Heating temperature is 110 ℃) for 30 kilograms.The low rate start high mixer, Deng adding 0.8 kilogram of corrdination type phosphorous acid ester coupling agent (NDZ-401) of diluting with alcohol (0.4 kilogram of alcohol wherein after the material temperature rise to 80 ℃ again, 0.4 kilogram NDZ-401), high-speed stirring handles that discharging obtains mixture A2 after 30 minutes; With weight ratio be simultaneously: polypropylene is 100 parts, the oleic acid graft polypropylene is 6 parts, and polyolefin elastomer (POE) is 12 parts, and corrdination type phosphorous acid ester coupling agent (NDZ-401) is 2 parts, clorafin is 0.8 part, and aforementioned each material is by the mixed mixture A1 that obtains of high mixer; Again mixture A1 and A2 are sent into twin screw or reciprocation type list screw extruder by the delicate metering device.A1 is set and A2 feeding ratio is 120.8: 40 by feeding control.Material under screw rod transmission and shearing action, fully plasticizing, fusion, compound, again through extruding, tie rod, cooling, pelletizing, oven dry and packing.The concrete data of the product that obtains are: melting index is 9.1g/10min, test condition: 190 ℃, and load 2.16Kg.Flexural strength is 49.3MPa, and shock strength is 435J/m, and elongation at break is 299%.
The proportioning of each composition is referring to table 1 among the embodiment 9 to embodiment 16, other not quite clear content look into referring to
Embodiment 1 to embodiment 8.
Table 1: each component proportioning of the present invention and The performance test results comparison sheet thereof
| Component | The set of dispense ratio | |||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
| Polypropylene | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Graft polypropylene | 15 | 8 | 5 | 18 | 2 | 9 | 22 | 6 |
| Rubber toughening agent | 20 | 24 | 8 | 30 | 10 | 16 | 5 | 12 |
| Coupling agent | 2 | 4 | 2.5 | 3 | 0.5 | 1 | 7 | 2 |
| Dispersion agent | 4.0 | 1.3 | 0.8 | 5.0 | 2.5 | 1.8 | 0.5 | 0.8 |
| Nanomete talc powder | 50 | 35 | 20 | 28 | 45 | 30 | 25 | 40 |
| Performance | ||||||||
| Melting index (g/10min) | 8.9 | 9.5 | 9.1 | 10.0 | 8.9 | 9.6 | 10.1 | 9.1 |
| Flexural strength (MPa) | 49.1 | 50.6 | 52.1 | 52.7 | 48.0 | 50.8 | 51.7 | 49.3 |
| Shock strength (J/m) | 439 | 454 | 441 | 483 | 431 | 447 | 430 | 435 |
| Elongation at break (%) | 268 | 291 | 342 | 339 | 287 | 327 | 338 | 299 |
| Component | The set of dispense ratio | |||||||
| 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | |
| Polypropylene | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Graft polypropylene | 8 | 14 | 5 | 18 | 11 | 20 | 7 | 9 |
| Rubber toughening agent | 18 | 28 | 14 | 6 | 14 | 23 | 16 | 22 |
| Coupling agent | 1 | 2 | 5 | 4.5 | 2 | 6 | 0.5 | 3 |
| Dispersion agent | 2.8 | 3.2 | 1.0 | 2.4 | 1.6 | 1.2 | 0.6 | 0.9 |
| Nanomete talc powder | 38 | 25 | 36 | 40 | 26 | 25 | 32 | 34 |
| Performance | ||||||||
| Melting index (g/10min) | 9.3 | 10.1 | 9.3 | 9.3 | 9.9 | 10.1 | 9.5 | 9.6 |
| Flexural strength (MPa) | 49.0 | 52.1 | 49.9 | 52.0 | 48.9 | 51.9 | 50.5 | 50.6 |
| Shock strength (J/m) | 443 | 489 | 439 | 427 | 447 | 466 | 445 | 452 |
| Elongation at break (%) | 309 | 331 | 323 | 334 | 332 | 339 | 318 | 320 |
Claims (11)
1. high workability nanomete talc powder modified polypropylene composite material is characterized in that the component that comprises the following weight ratio is:
Polypropylene is 100 parts
Graft polypropylene is 2-22 part
Rubber toughening agent is 5-30 part
Dispersion agent is 0.5-5 part
Coupling agent is that 0.5-7 part and nanomete talc powder are 20-65 part.
2. high workability nanomete talc powder modified polypropylene composite material according to claim 1 is characterized in that comprising the component of following content:
Polypropylene is 100 parts
Graft polypropylene is 5-16 part
Rubber toughening agent is 10-24 part
Dispersion agent is 1-3 part
Coupling agent is that 1-3 part and nanomete talc powder are 30-55 part.
3. high workability nanomete talc powder modified polypropylene composite material according to claim 1 and 2 is characterized in that described polypropylene is meant the acrylic resin of melting index greater than homopolymerization level or the copolymerization level of 8.0g/10min.
4. high workability nanomete talc powder modified polypropylene composite material according to claim 1 and 2 is characterized in that described rubber toughening agent is a kind of in ethylene-propylene rubber(EPR) EPR, terpolymer EP rubber EPDM, polyolefin elastomer POE or fourth two rubber.
5. high workability nanomete talc powder modified polypropylene composite material according to claim 1 and 2 is characterized in that described graft polypropylene is that method by fusion-grafting is grafted to the graft polypropylene that forms on the polypropylene with acid grafted monomer or alkaline grafted monomer.
6. high workability nanomete talc powder modified polypropylene composite material according to claim 1 and 2 is characterized in that described dispersion agent is meant hydro carbons lubricant or aliphatic amide series lubricant agent.
7. high workability nanomete talc powder modified polypropylene composite material according to claim 1 and 2 is characterized in that described nanomete talc powder size: 30～120nm.
8. high workability nanomete talc powder modified polypropylene composite material according to claim 1 and 2 is characterized in that described coupling agent is meant silane coupling agent or titante coupling agent.
9. the preparation method of high workability nanomete talc powder modified polypropylene composite material according to claim 1 is characterized in that it comprises following process:
A, batch mixing process: polypropylene, graft polypropylene, rubber toughening agent, coupling agent and other component were mixed 6～10 minutes through the high mixer high-speed stirring in proportion,
B, talcum powder preprocessing process: at first 30 kilograms of talcum powder being joined and setting Heating temperature is in 110 ℃ the high mixer, and the low rate start high mixer adds 0.6～1.2 kilogram of coupling agent high-speed stirring processing of dilute 30 minutes after the material temperature rise to 80 ℃ again,
C, extrusion: the mixture that mixture that step a is obtained and step b obtain is sent into melt blending and extruding pelletization in twin screw or the reciprocation type list screw extruder respectively by the delicate metering system; Each section screw rod controlled temperature is between 160 ℃～235 ℃, and screw slenderness ratio must be more than or equal to 32, and the residence time of mixture in extrusion equipment is controlled at 8-40 second.
10. the preparation method of high workability nanomete talc powder modified polypropylene composite material according to claim 9, it is characterized in that it is to adopt twin screw extruder group that is equipped with two covers or the above accurately weight-loss metering system of side direction feeding of two covers or the extrusion equipment that reciprocation type single screw extrusion machine group constitutes to carry out the operation of mechanical blending method, the screw slenderness ratio of its extrusion equipment is more than or equal to 32, and each section screw rod controlled temperature is between 160-220 ℃.
11., it is characterized in that the employed thinner of coupling agent among its step b is white oil or alcohol and to adopt weight ratio be dilution in 1: 1 according to the preparation method of claim 9 or 10 described high workability nanomete talc powder modified polypropylene composite materials.
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| CN100365049C (en) * | 2006-01-26 | 2008-01-30 | 海城市金昌科技开发有限公司 | Super fine talc powder reinforced PP R pipe material |
| CN100410316C (en) * | 2006-01-26 | 2008-08-13 | 海城市金昌科技开发有限公司 | High-superfine French white powder-content toughening flat fibre materials with polypropylene |
| CN1944516B (en) * | 2006-10-31 | 2012-02-15 | 东莞金富亮塑胶颜料有限公司 | High density poly propylene (PP) composite material |
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| CN114702726B (en) * | 2022-04-13 | 2024-02-13 | 广西科学院 | Preparation method of special superfine active talcum powder for automotive polypropylene plastic |
-
2003
- 2003-07-27 CN CN 03142003 patent/CN1292021C/en not_active Expired - Lifetime
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Denomination of invention: High fluidity nano talc powder modified polypropylene composite and its preparation method Effective date of registration: 20211220 Granted publication date: 20061227 Pledgee: Dongyang sub branch of Bank of China Ltd. Pledgor: HENGDIAN GROUP DEBANG ENGINEERING PLASTIC CO.,LTD. Registration number: Y2021330002568 |
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