CN1127539C - PP composite material reinfored by mica and glass fiber felt, and prepn. method and use thereof - Google Patents
PP composite material reinfored by mica and glass fiber felt, and prepn. method and use thereof Download PDFInfo
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- CN1127539C CN1127539C CN 00119480 CN00119480A CN1127539C CN 1127539 C CN1127539 C CN 1127539C CN 00119480 CN00119480 CN 00119480 CN 00119480 A CN00119480 A CN 00119480A CN 1127539 C CN1127539 C CN 1127539C
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Abstract
The present invention discloses a polypropylene composite material reinforced by mica and a glass fiber mat, a preparation method of the material and the application of the material on a concrete deposited building mould plate. In the present invention, a novel high rigidity GMT is prepared by using polypropylene as a matrix, a continuous glass fiber mat or a long glass fiber mat treated through surface infiltration as a reinforcing material, surface treated mica as a filling material and maleic anhydride grafted polypropylene as an interface compatiblizing agent. The interface combination of fibers and the matrix and the interface combination of the filling material and the matrix of the obtained GMT are obviously improved, and the reinforcing effect can be obviously improved. The GMT can be used for preparing the concrete deposited building mould plate.
Description
The present invention relates to a kind of filling mixt, relating in particular to a kind of is the polypropylene composite material (be called for short GMT) and preparation method thereof of weighting material with mica and glass mat.
GMT, English Glass Mat Reinforced Thermoplastic by name, be that a kind of glass mat strengthens the thermoplas tic resin composite, it has other polymer matrix composite and the unrivaled premium properties of engineering plastics: the high impact that (1) is outstanding, and it is higher 2.5 times than the sheet molding compound (SMC) of thermoset that it absorbs ballistic ability; (2) moulding process is simple, and process velocity is fast, and is easy to make massive article; (3) do not have chemical reaction in the production and the course of processing, be easy to reclaim, can reuse, environmental pollution is little, so GMT is called as " green material ".With the polypropylene is the GMT-PP-GMT of matrix, have superior P/C ratio, so PP-GMT is most widely used.GMT at first mainly is used in the aggregated(particle) structure parts of automobile industry, for example engine shield, preceding face, chair back skeleton, panel board and collision bumper, and it uses the fields such as petroleum industry, electrical equipment, construction equipment and furniture of having expanded at present.Though GMT has the above advantage, to compare with same with thermosetting compound material and also to have weak point, the GMT rigidity is not enough, and generally between 3～6GPa, same with thermosetting compound material is then more than 10GPa for the modulus in flexure of PP-GMT; Warping phenomenon appears in the massive article poor dimensional stability of GMT compression molding easily; GMT causes surface property relatively poor because glass fibre is exposed to product surface easily.Therefore GMT is requiring relatively stricter occasion to compete with same with thermosetting compound material to rigidity and surface property.Therefore, many scientific workers have proposed many improved plans to existing GMT, as:
US Patent 4,983,647 proposes short glass fiber and the common Reinforced Polypropylene of mica, because mica is the two-dimensional sheet structure, is a kind of good polypropylene mineral filler, and mica filled polypropylene has quite high rigidity.Mica filled polypropylene articles dimensional stability is splendid, and the rigidity of goods and dimensional stability are all obviously improved.This patent provides the preparation method of above-mentioned Reinforced Polypropylene simultaneously, this method with polypropylene and glass fibre and mica by forcing machine mixing granulation, injection moulding again.Because glass fibre is constantly shredded in mixing and injection moulding process, the glass fibre length in the end article is less than 1mm, and the glass fibre reinforced effects is significantly weakened, and the intensity of material and impact property are all lower;
EP 0,945, and 253 provide a kind of is the GMT of filler by talcum powder, mica, lime carbonate and barium sulfate etc., with the mechanical property that improves material or reduce cost.The talcum powder that this patent is made is filled the GMT material, the rigidity of GMT is improved to some extent, but the technical problem that the inreal adding that solves filler of this patent brings: the adding of (1) filler combines interface between glass fibre and the matrix and exists influence, when filler content is higher, filler significantly reduces fiber and matrix with the meeting that contacts of glass fibre, the interface bond strength of filler and matrix, cause the reinforced effects of glass and filler all obviously to reduce, this patent is not noticed the influence of the adding of filler to the interface, and therefore the rigidity of the filling GMT that makes is compared with Traditional GM T and do not had breakthrough raising; (2) affiliation that adds of filler is risen the viscosity of matrix, this will cause that matrix is to the increase of glass mat dipping difficulty in the GMT preparation process, and dipping effect is an important factor of the final performance of decision GMT, and this patent does not have effectively to solve the technology condition that GMT is filled in preparation yet;
The short glass fiber Reinforced Polypropylene of Japan Daiwa Giken K.K. exploitation (the corrosion and protection newspaper, 1997,3, pp15) adopt calcium carbonate filling modification, to improve rigidity and the P/C ratio of GMT.The adding of lime carbonate can reduce the cost of material, but because the feature of lime carbonate own determines it can not effectively improve the rigidity of material, owing to adopt short glass fiber, the impact property of material is relatively poor in addition, so material is used for building template still existence deficiency on performance in this.
It is a kind of new for mica and glass mat enhanced polypropylene matrix material that one of purpose of the present invention is to provide, and to overcome prior art rigidity defect of insufficient, satisfies the needs of branch of industry;
Two of purpose of the present invention is to disclose a kind of preparation method with mica and glass mat enhanced polypropylene matrix material;
Three of purpose of the present invention is to disclose the application of above-mentioned polypropylene composite material on the preparation building template.
Design of the present invention is such: the present invention is matrix with the polypropylene, with continuous Glass Fiber Mat or long glass fibres felt through the surface infiltration processing is strongthener, with surface treated mica is filler, maleic anhydride inoculated polypropylene is an interfacial compatibilizer, prepares a kind of novel high rigidity GMT.Because material therefor has passed through surface treatment, and has added interfacial compatibilizer, therefore its fiber of GMT that is obtained combines with the interface of matrix with matrix, filler and significantly improves, and reinforced effects will obviously improve, and obtain high inflexible GMT.
According to above-mentioned design, the contriver has proposed realization the object of the invention technical scheme as described below through a large amount of tests:
The said matrix material of the present invention is a composition, comprises matrix and glass mat, and wherein the component of matrix comprises:
Polypropylene (PP) 87～40%
Mica (mica) 10～50%
Maleic anhydride inoculated polypropylene (MPP) 2.5～15%
Low-molecular polypropylene wax (WP) 0.1～2.5%
Below all be weight percentage.
The volume content of matrix and glass mat is in the matrix material:
Matrix 95～80%
Glass fibre 5～20%
Said polypropylene is a homo-polypropylene, and melting index is between 2～35, and melting index is better at the polypropylene of 12～35g/10min, when adopting melting index to be 35g/10min, and GMT performance the best of making, rigidity and shock strength are all best;
Said mica particle diameter is between 60～1000 orders, and the modulus in flexure of the big more material of particle diameter is high more, and impact property slightly reduces, and the mica particle diameter is when 100 orders are following, and the rigidity of material is the highest; The addition of mica in polypropylene matrix is from 10wt% to 50wt%, and the rigidity of filling GMT with the raising of mica addition improves, and the content of mica in matrix is 40% o'clock preferable and every balancing performance of mechanical property; Mica preferably adopts coupling agent to carry out surface treatment earlier, to improve material property.
Said maleic anhydride inoculated polypropylene is as the interfacial compatibilizer of mica and matrix, glass fibre and matrix, and solid phase method synthetic powder maleic anhydride inoculated polypropylene effect is preferable.Maleic anhydride solid phase grafting polypropylene can be prepared according to document (Polym.-Plast.Technol.Eng., 32 (4), 292,1993) institute's reported method; The percentage of grafting of maleic anhydride is 1～10wt%, the maleic anhydride inoculated polypropylene better effects if of high percentage of grafting; The addition of maleic anhydride inoculated polypropylene in polypropylene matrix is 2.5～15wt%;
Said low-molecular polypropylene wax (WP) can reduce the viscosity of matrix as processing aid, promotes that matrix reduces preparation technology's difficulty to the dipping of glass mat in the GMT preparation process, and final material property is improved.The molecular-weight average of WP is between 5000～30000, and effect is preferable in the time of between 10000～16000.Can adopt the commercially available prod, as the WP-13 that Kingsoft, Shanghai Venus plastic molding and processing plant produces, molecular weight is between 12000～14000.
Said glass mat is continuous random glass fibers bundle felt or long random monofilament glass mat, and the fibrous bundle felt has better reinforced effects than monofilament blanket, and fiberglass surfacing is handled through the treating compound compatible with acrylic resin.Process of surface treatment is mature industrialization process method, no longer narrates at this.
Preferred matrix ratio is:
Polypropylene (PP) 74.5～45.5%
Mica (mica) 20～40%
Maleic anhydride inoculated polypropylene (MPP) 5～10%
Low-molecular polypropylene wax (WP) 0.5～1.5%
The volume content of glass fibre is in the preferred matrix material: 7.5～15%.
For prevent in the material preparation process and in the product molding process polypropylene degrade, preferably add an amount of oxidation inhibitor, as DSTP and 1010.
The preparation method of above-mentioned matrix material comprises the steps:
1. at first adopt coupling agent that mica is carried out surface treatment:
Said used coupling agent is the commercially available prod, can be in titanic acid ester, γ-An Bingjisanyiyangjiguiwan or γ-methacrylic acid propyl trimethoxy silicane etc. one or more, the best results of γ-An Bingjisanyiyangjiguiwan wherein, the weight percent consumption of coupling agent is a micaceous 0.5～2.5%, and is preferable with 1.5% consumption;
Coupling agent is dissolved in the solvent, and slowly is added drop-wise to the mica that places in the super mixer, in super mixer, stirred under the normal temperature 15～30 minutes, then with mica 110 ℃ of bakings 2～3 hours in baking oven;
Said solvent is toluene or water, and the volume ratio of coupling agent and toluene is 1: 3, and the volume ratio of silane coupling agent and water is 1: 10, and wherein, titanate coupling agent can dissolve with toluene, and the silane coupling agent used water is dissolved and made emulsion through the emulsify at a high speed device;
2. maleic anhydride inoculated polypropylene powder that above-mentioned mica and polypropylene, solid phase grafting are made and low-molecular polypropylene wax are in the melting mixing granulation in twin screw extruder of above-mentioned ratio, and the pellet that obtains is made the thick film in the 1mm left and right sides through twin screw extruder and roll squeezer again;
For prevent in the material preparation process and in the product molding process polypropylene degrade, preferably add an amount of oxidation inhibitor, as DSTP and 1010.
3. with continuous random glass fibers bundle felt or long random monofilament glass mat and the above-mentioned mica filled polypropylene film alternate lay of multilayer through surface infiltration agent processing, as two-layer glass felt being laid in three layers of above-mentioned mica filled polypropylene film, then the polypropylene in middle layer can be polypropylene film or the direct melt polypropylene of being extruded by forcing machine, and outermost is polypropylene film.Glass felt that lay is good and polypropylene film get final product the said polypropylene composite material of filling with mica and glass mat of the present invention in the compacting of double-steel belt pressing machine upper strata, and its thickness is the sheet material of 2～6mm.
Said glass mat is continuous random glass fibers bundle felt or long random monofilament glass mat, the fibrous bundle felt has better reinforced effects than monofilament blanket, fiberglass surfacing is handled through the treating compound compatible with acrylic resin, and process of surface treatment is mature industrialization process method.
Owing to behind the mica filled polypropylene, polyacrylic melt viscosity is increased, this must cause melt difficult more to the dipping of glass felt, and the processing condition of double-steel belt pressing machine need strict control.The linear velocity of double-steel belt pressing machine is in 0.15～0.25m/min scope, the melt temperature of dipping glass felt is in 210～260 ℃ of scopes, during preferable temperature range 230～240 ℃, melt is controlled at 2～3min clamping time, impregnation pressure when pressure will high slightly preparation not be filled GMT is generally 4～8Pa.
Said matrix material can be made into various devices by die press technology for forming, as concrete depositing building template etc.Its processing condition are such: sheet material is preheated to 210～220 ℃ in process furnace, then with sheet material rapidly at the die surface laying, the matched moulds extrusion forming, pressing speed is controlled between 8～15 mm/second, best pressing speed is 12 mm/second, and mold clamping pressure is 150～200 tons, and best mold clamping pressure is 180 tons, dwell time is between 40～100 seconds, and 60 seconds is best.
The matrix material that adopts the said method of the present invention to be obtained, has very good physical and mechanical property, rigidity has not had breakthrough raising than filling GMT, and impact property still remains on higher level, product size stability improves, and the massive article of making can be in case warpage, and this kind matrix material has good surface appearance in addition, product surface does not reveal glass fibre, is fit to make the goods higher to surperficial performance requriements.The present invention passes through the micaceous surface treatment, add the processing aid polyethylene wax of interfacial compatibilizer maleic anhydride inoculated polypropylene and reduction matrix viscosity, and select suitable fabrication process condition for use, effectively solved the micaceous adding combination of GMT interface and dipping have been brought difficulty, make high inflexible GMT, solved the not enough shortcoming of Traditional GM T rigidity; By die press technology for forming this material has been made large-scale concrete casting injection molded plate, product properties is good, and rigidity and dimensional stability can satisfy service requirements.
Below will be further described related content of the present invention by embodiment.
Embodiment 1
1. at first adopt coupling agent that mica is carried out surface treatment:
30 gram γ-An Bingjisanyiyangjiguiwans are made the 300ml water miscible liquid, and be added drop-wise to slowly that to place the gram of 2000 in super mixer median sizes be 100 purpose micas, in super mixer, stirred 30 minutes under the normal temperature, then with mica 110 ℃ of bakings 3 hours in baking oven;
2. polypropylene, the percentage of grafting that with above-mentioned 2000 gram micas and 2675 gram melting index is 16g/10min is that 250 gram maleic anhydride inoculated polypropylenes, the molecular-weight average of 3wt% restrains DSTP at 12000～14000 50 gram low-molecular polypropylene waxes and 15 gram antioxidant 1010s and 10, melting mixing granulation in twin screw extruder, the pellet that obtains are made the thick film of 0.8mm through twin screw extruder and roll squeezer again;
3. the two-layer continuous random glass fibers bundle felt of handling through treating compound is laid in three layers of above-mentioned mica filled polypropylene film, the polypropylene in middle layer can be polypropylene film or the direct melt polypropylene of being extruded by forcing machine, and outermost is polypropylene film.Glass felt that lay is good and polypropylene film can obtain the said crystalline p p sheet of filling with mica and glass mat of the present invention in the compacting of double-steel belt pressing machine upper strata, and thickness is 4mm.The volume content of glass fibre is 11%, and weight content is 20.4%.
The linear velocity of double-steel belt pressing machine is 0.25m/min, and the temperature of the matrix of dipping glass felt is at 240 ℃, and be 3min clamping time, pressure 7 MPa.
Adopt the ASTM standard that the mechanical property of material is tested, the result is as follows:
| Tensile strength (MPa) | 82.7 |
| Tensile modulus (MPa) | 6313 |
| Flexural strength (MPa) | 148.3 |
| Modulus in flexure (MPa) | 8200 |
| Izod shock strength (Jm -1) | 574 |
Embodiment 2-6
Adopt the preparation technology identical with embodiment 1, the performance of raw material consumption and gained material is as shown in the table:
| Embodiment | 2 | 3 | 4 | 5 | 6 |
| Tensile strength (MPa) | 72.7 | 64.6 | 63.5 | 96.5 | 78.5 |
| Tensile modulus (MPa) | 4590 | 3875 | 5812 | 7284 | 6580 |
| Flexural strength (MPa) | 155.3 | 101.6 | 120.3 | 167.6 | 152.3 |
| Modulus in flexure (MPa) | 611 8 | 4832 | 7417 | 9856 | 10035 |
| Izod shock strength (Jm -1) | 469 | 718 | 356 | 783 | 611 |
| Melt polypropylene flow index (g/10min) | 16 | 16 | 16 | 16 | 35 |
| Glass fiber content (wt%) | 24.4 | 20.4 | 14.4 | 35.5 | 20.4 |
| Mica content (wt%) | 7.6 | 15.9 | 34.2 | 25.8 | 15.9 |
| Mica particle diameter (order) | 100 | 100 | 100 | 100 | 100 |
| Maleic anhydride inoculated polypropylene (wt%) | 0 | 0 | 4.3 | 3.2 | 4.5 |
| Poly Propylene Wax addition (wt%) | 0 | 0 | 0.86 | 0.64 | 0.90 |
| Proportion (g/cm -3) | 1.14 | 1.23 | 1.32 | 1.37 | 1.23 |
| Glass fiber content (vol%) | 11 | 11 | 7.5 | 15 | 11 |
| Mica content in the matrix (wt%) | 10 | 40 | 40 | 40 | 40 |
| Maleic anhydride inoculated polypropylene addition (wt%) in the matrix | 0 | 0 | 5 | 5 | 5 |
| Poly Propylene Wax addition (wt%) in the matrix | 0 | 0 | 1.0 | 1.0 | 1.0 |
Embodiment 7 adopts titanate coupling agent that mica is carried out surface treatment:
30 gram titanic acid ester are dissolved in the 90ml toluene, and slowly being added drop-wise to the 2000 gram median sizes that place in the super mixer is 100 purpose micas, stirs 30 minutes in mixing tank under the normal temperature, removes and desolvates, then with mica 110 ℃ of oven dry in baking oven; Other are identical with embodiment 1.Test result is as follows:
| Tensile strength (MPa) | 76.6 |
| Tensile modulus (MPa) | 6821 |
| Flexural strength (MPa) | 132.3 |
| Modulus in flexure (MPa) | 8712 |
| Izod shock strength (Jm -1) | 607 |
Claims (9)
1. one kind with mica and glass mat enhanced polypropylene matrix material, it is characterized in that comprising matrix and glass mat, and wherein: the component of matrix comprises:
Polypropylene 40～87%
Mica 10～50%
Maleic anhydride inoculated polypropylene 2.5～15%
Low-molecular polypropylene wax 0.1～2.5%
Below all be weight percentage;
The volume content of matrix and glass mat is in the matrix material:
Matrix 80～95%
Glass mat 5～20%
Said polypropylene melt index is 2～35g/10min; Said mica particle diameter is 60～1000 orders; The percentage of grafting of said maleic anhydride is 1～10 wt%; The molecular-weight average of said low-molecular polypropylene wax is 5000～30000; Said glass mat is continuous random glass fibers bundle felt or long random monofilament glass mat.
2 materials as claimed in claim 1 is characterized in that, polypropylene melt index is 35g/10min, and the Poly Propylene Wax molecular-weight average is 10000～16000.
3. material as claimed in claim 1 is characterized in that also can comprising oxidation inhibitor.
4 materials as claimed in claim 2 is characterized in that also can comprising oxidation inhibitor.
5. preparation methods as claimed in claim 1 is characterized in that comprising the steps:
1. at first adopt coupling agent that mica is carried out surface treatment:
Said coupling agent is one or more in titanic acid ester, γ-An Bingjisanyiyangjiguiwan or γ-methacrylic acid propyl trimethoxy silicane, and the weight percent consumption of coupling agent is a micaceous 0.5～2.5%;
Coupling agent is dissolved in the solvent, is added to the mica that places in the super mixer, stir, dry;
2. with above-mentioned mica and polypropylene, maleic anhydride inoculated polypropylene and low-molecular polypropylene wax in the melting mixing granulation in twin screw extruder of above-mentioned ratio, the pellet that obtains is made film through twin screw extruder and roll squeezer again;
3. with continuous random glass fibers bundle felt or long random monofilament glass mat and the above-mentioned mica filled polypropylene film alternate lay of multilayer through surface infiltration agent processing, the middle layer is polypropylene film or the melt polypropylene of directly being extruded by forcing machine, outermost layer is a polypropylene film, glass felt that lay is good and polypropylene film can obtain said polypropylene composite material in the compacting of double-steel belt pressing machine upper strata;
The linear velocity of double-steel belt pressing machine is 0.15～0.25m/min, and the melt temperature of dipping glass felt is in 210～260 ℃ of scopes, and melt is controlled to be 2～3min clamping time, and pressure is 4～8Pa.
6. preparation method as claimed in claim 5 is characterized in that, said coupling agent is a γ-An Bingjisanyiyangjiguiwan.
7. preparation method as claimed in claim 5 is characterized in that, the melt temperature of dipping glass felt is 230～240 ℃.
8 preparation methods as claimed in claim 5 is characterized in that, said coupling agent weight percent consumption is a micaceous 1.5%.
9. the application of material as claimed in claim 1 is characterized in that, can prepare the concrete depositing building template.
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| CN 00119480 CN1127539C (en) | 2000-07-20 | 2000-07-20 | PP composite material reinfored by mica and glass fiber felt, and prepn. method and use thereof |
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| CN 00119480 CN1127539C (en) | 2000-07-20 | 2000-07-20 | PP composite material reinfored by mica and glass fiber felt, and prepn. method and use thereof |
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| CN1127539C true CN1127539C (en) | 2003-11-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101070409B (en) * | 2006-05-09 | 2010-09-01 | 松下电器产业株式会社 | Polypropylene resin composition, its preparing method and fan |
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| WO2003037819A2 (en) * | 2001-10-31 | 2003-05-08 | The Dow Chemical Company | Small cross-section composites of longitudinally oriented fibers and a thermoplastic resin as concrete reinforcement |
| CN1328312C (en) * | 2003-11-03 | 2007-07-25 | 倪斌 | Plant fibre-polypropylene composite material and preparation thereof |
| CN100389149C (en) * | 2005-11-28 | 2008-05-21 | 乌鲁木齐汇源新科技开发有限公司 | Engineering material synthesized by mica |
| CN101735508B (en) * | 2008-11-05 | 2013-11-06 | 金发科技股份有限公司 | High weld mark strength reinforced polypropylene material and preparation method thereof |
| CN101580613B (en) * | 2009-06-19 | 2011-07-06 | 佛山市南海美之彩塑化有限公司 | Master batch used for preparing high heat-resisting polypropylene plastic as well as preparation method and application thereof |
| CN102329454B (en) * | 2011-10-18 | 2013-10-16 | 深圳市科聚新材料有限公司 | Polypropylene composite material as well as preparation method and application thereof |
| CN103131203A (en) * | 2013-01-28 | 2013-06-05 | 天津玉泉工贸有限公司 | Preparation method of propenyl/mica efficient modifying agent |
| CN104325659A (en) * | 2014-10-14 | 2015-02-04 | 贵州蓝图新材料有限公司 | Method for improving mechanical performances of fiberglass cloth reinforced geocell |
| CN108727695A (en) * | 2018-05-31 | 2018-11-02 | 宁波帅特龙集团有限公司 | A kind of automobile cover plate composite material |
| CN114425890B (en) * | 2020-10-29 | 2023-12-08 | 中国石油化工股份有限公司 | Glass fiber cloth/polypropylene composite material and preparation method and application thereof |
| CN115447243A (en) * | 2022-09-13 | 2022-12-09 | 安徽镝伟达新材料科技有限公司 | Polyester fiber board for pouring concrete template |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101070409B (en) * | 2006-05-09 | 2010-09-01 | 松下电器产业株式会社 | Polypropylene resin composition, its preparing method and fan |
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