CN103113661A - High-strength high-toughness flame-retardant polypropylene composite and preparation method thereof - Google Patents
High-strength high-toughness flame-retardant polypropylene composite and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a high-strength high-toughness flame-retardant polypropylene composite and a preparation method thereof. The composite is prepared form the following components in parts by weight: 40-60 parts of a long glass fiber reinforced polypropylene composite and 40-60 parts of toughened flame-retardant masterbatch. The preparation method comprises the following steps of: preparing the long glass fiber reinforced polypropylene composite through processes of plasticizing, melting, dipping of glass fibers, solidifying, pelletizing and the like; preparing the toughened flame-retardant masterbatch through processes of mixing, extruding and pelletizing; and then uniformly mixing the long glass fiber reinforced polypropylene composite and the toughened flame-retardant masterbatch in a high-speed mixer, thus obtaining the high-strength high-toughness flame-retardant polypropylene composite. Compared with the prior art, the high-strength high-toughness flame-retardant polypropylene composite has the advantages that the toughened flame-retardant masterbatch is added to ensure that the prepared long fiber reinforced polypropylene composite has a good flame retardant property and excellent mechanical properties, the notch impact strength of the composite can reach 50KJ/M<2>, and the strength and the stiffness of the composite are kept at a high level.
Description
Technical field
The present invention relates to technical field of polymer materials, especially relate to a kind of high-strength high-toughness flame-resistant polypropylene composite material and preparation method thereof.
Background technology
Long-fiber-reinforced thermoplastics is a kind of glass fibre length reinforced thermoplastic plastics identical with pellet length.In the situation that fibre content is identical, to compare with common staple fibre reinforced thermoplastics(RTP), Long-fiber-reinforced thermoplastics has higher intensity, modulus, toughness, resistance to fatigue, thermotolerance and better dimensional stability.
Yet after adding a large amount of fire retardants in Long-fiber-reinforced thermoplastics, the mechanical property of material tends to be subject to larger impact, and especially impact property descends rapidly, and shock strength obviously reduces.A kind of long fiber reinforced fire-retardant resin and preparation method thereof is disclosed as Chinese patent CN1810862A, it is that the continuous fiber reinforced thermoplastic resin of high fibre content and common fire-retardant master granule blending are formed, and the notched Izod impact strength of the fire-retardant long fibre enhanced polypropylene material of making by the method only is 29KJ/m
2And the invention has the advantages that adding of toughening flame-proof master batch, make the long fibre enhanced polypropylene matrix material that makes possess simultaneously good flame retardant properties and outstanding mechanical property, its notched Izod impact strength can reach 50KJ/m
2, and intensity and rigidity also remain on higher level.
Summary of the invention
Purpose of the present invention is exactly that the flame-retardant polypropylene composite material of a kind of high strength, high tenacity, excellent property is provided for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of high-strength high-toughness flame-resistant polypropylene composite material, this material is made by the component that comprises following weight part:
Long glass fiber reinforced polypropylene composite material 40-60,
Toughening flame-proof master batch 40-60.
Described long glass fiber reinforced polypropylene composite material is made by the component that comprises following weight part:
Polypropylene 45-60,
Glass fibre 40-50,
Compatilizer 2-3,
Lubricant 0-1,
Oxidation inhibitor 0-1.
Described toughening flame-proof master batch is made by the component that comprises following weight part:
Polypropylene 40-60,
Fire retardant 30-50,
Toughner 5-15,
Oxidation inhibitor 0-1,
Other auxiliary agents 0-10.
Described compatilizer be selected from glycidyl methacrylate and polyacrylic multipolymer or maleic anhydride inoculated polypropylene or in one or both.
Described lubricant is wax, stearic acid or stearate.
Described wax is selected from one or more in paraffin, Poly Propylene Wax, polyethylene wax or amide waxe.
Described stearate is selected from one or more in Zinic stearas, calcium stearate, barium stearate etc.
Described oxidation inhibitor is selected from one or more in Hinered phenols, hindered amines, phosphorous acid ester or thioether kind antioxidant.
One or more in the preferred antioxidant 1010 of described oxidation inhibitor, oxidation inhibitor 1098, irgasfos 168 or oxidation inhibitor DSTDP.
Described fire retardant is selected from one or more in halogen containing flame-retardant, expansion type flame retardant or inorganic combustion inhibitor,
One or more in the preferred TDE of described fire retardant, ammonium polyphosphate, magnesium hydroxide or antimonous oxide.
Described toughner is selected from thermoplastic elastic body.
One or more in the preferred terpolymer EP rubber EPDM of described toughner, polystyrene block copolymer SEBS or polyolefin elastomer.
Described other auxiliary agents are selected from one or more in lubricant, coupling agent or filler.
The lubricant that uses in other auxiliary agents is wax, stearic acid or stearate.
Described wax is selected from one or more in paraffin, Poly Propylene Wax, polyethylene wax or amide waxe.
Described stearate is selected from one or more in Zinic stearas, calcium stearate, barium stearate etc.
Described coupling agent is selected from silane coupling agent or titanate coupling agent.
Further be selected from coupling agent KH550 or KH590.
Described filler is selected from one or more in talcum powder, calcium carbonate, barium sulfate, clay, kaolin, silicon-dioxide, wollastonite or vermiculite.
A kind of preparation method of high-strength high-toughness flame-resistant polypropylene composite material comprises the following steps:
(1) get the raw materials ready according to following component and weight part content:
Long glass fiber reinforced polypropylene composite material 40-60,
Toughening flame-proof master batch 40-60;
(2) long glass fiber reinforced polypropylene composite material and toughening flame-proof master batch are joined in high-speed mixer mix, namely get product.
Above-mentioned long glass fiber reinforced polypropylene composite material obtains by following technique:
(1) polypropylene, compatilizer, lubricant and oxidation inhibitor are mixed, and under 180～220 ℃ of conditions plastifying fusion, obtain the acrylic resin melt of melting;
(2) be extruded in the melt impregnation mould by the resin melt of twin screw extruder with melting, simultaneously continuous glass fibre drawn by creel, enter the dipping die head of the acrylic resin melt that contains melting, realize dispersion and the infiltration of fiber in die head;
(3) step (2) is obtained composite cools down and solidify, then be cut into according to demand the particle of corresponding length through dicing machine, namely obtain long glass fiber reinforced polypropylene composite material.
Above-mentioned toughening flame-proof master batch obtains by following technique:
(1) polypropylene, fire retardant, toughner, oxidation inhibitor and other auxiliary agents are joined carried out high-speed mixing in high-speed mixer 5～10 minutes;
(2) said mixture is put into twin screw extruder, extrude and granulation, obtain the toughening flame-proof master batch.
Compared with prior art, the present invention has the following advantages:
The present invention has added the toughening flame-proof master batch, makes the long fibre enhanced polypropylene matrix material that makes possess simultaneously good flame retardant properties and outstanding mechanical property, and its notched Izod impact strength can reach 50KJ/m2, and intensity and rigidity also remain on higher level.
Embodiment
The present invention is described in detail below in conjunction with specific embodiment.
Embodiment 1
(1) with polypropylene 57.4kg, maleic anhydride inoculated polypropylene 2kg, antioxidant 1010 0.2kg, irgasfos 168 0.4kg plastifying fusion under 180～220 ℃ of conditions, obtain the acrylic resin melt; With the melt impregnation of continuous glass fibre through described acrylic resin, make the glass fibre complete wetting; Above-mentioned glass fibre is drawn by creel, through the tensioning roller adjustment of tonicity, enter the melt impregnation die head, realize dispersion and the infiltration of fiber in die head, the content of the control of export fiber of the fiber by die head is 40kg, cooling curing is cut into 10mm length through dicing machine, obtains long glass fiber reinforced polypropylene composite material A;
(2) acrylic resin 47.7kg, terpolymer EP rubber EPDM 10kg, ammonium polyphosphate flame retardant 42kg, antioxidant 1010 0.1kg, irgasfos 168 0.2kg are joined carried out high-speed mixing in high-speed mixer 5～10 minutes, then put into twin screw extruder, extrude at 180～200 ℃ of temperature and granulation, obtain the toughening flame-proof mother particle B;
(3) with long glass fiber reinforced polypropylene composite material A50kg and toughening flame-proof mother particle B 50kg, join to mix in high-speed mixer and get final product.The performance test results sees Table 1.
Embodiment 2
(1) with polypropylene 46.4kg, maleic anhydride inoculated polypropylene 3kg, antioxidant 1010 0.2kg, irgasfos 168 0.4kg plastifying fusion under 180～220 ℃ of conditions, obtain the acrylic resin melt; With the melt impregnation of continuous glass fibre through described acrylic resin, make the glass fibre complete wetting; Above-mentioned glass fibre is drawn by creel, through the tensioning roller adjustment of tonicity, enter the melt impregnation die head, realize dispersion and the infiltration of fiber in die head, the content of the control of export fiber of the fiber by die head is 50kg, cooling curing is cut into 12mm length through dicing machine, obtains long glass fiber reinforced polypropylene composite material C;
(2) acrylic resin 47.7kg, styrene block copolymer SEBS 10kg, TDE 24kg, antimonous oxide 8kg, antioxidant 1010 0.1kg, irgasfos 168 0.2kg and talcum powder 10kg are joined carried out high-speed mixing in high-speed mixer 5～10 minutes, then put into twin screw extruder, extrude at 180～210 ℃ of temperature and granulation, obtain toughening flame-proof master batch D;
(3) with long glass fiber reinforced polypropylene composite material C40kg and toughening flame-proof master batch D60kg, join to mix in high-speed mixer and get final product.The performance test results sees Table 1.
Embodiment 3
(1) with polypropylene 46.4kg, maleic anhydride inoculated polypropylene 3kg, antioxidant 1010 0.2kg, irgasfos 168 0.4kg plastifying fusion under 180～220 ℃ of conditions, obtain the acrylic resin melt; With the melt impregnation of continuous glass fibre through described acrylic resin, make the glass fibre complete wetting; Above-mentioned glass fibre is drawn by creel, through the tensioning roller adjustment of tonicity, enter the melt impregnation die head, realize dispersion and the infiltration of fiber in die head, the content of the control of export fiber of the fiber by die head is 50kg, cooling curing is cut into 11mm length through dicing machine, obtains long glass fiber reinforced polypropylene composite material E;
(2) acrylic resin 41.7kg, polyolefin elastomer 10kg, TDE 36kg, antimonous oxide 12kg, antioxidant 1010 0.1kg, irgasfos 168 0.2kg are joined carried out high-speed mixing in high-speed mixer 5～10 minutes, then put into twin screw extruder, extrude at 180～210 ℃ of temperature and granulation, obtain toughening flame-proof master batch F;
(3) with long glass fiber reinforced polypropylene composite material C60kg and toughening flame-proof master batch D40kg, join to mix in high-speed mixer and get final product.The performance test results sees Table 1.
Table 1 embodiment 1,2,3 product performance test results
As can be seen from Table 1, the long fibre enhanced polypropylene matrix material for preparing by the present invention has possessed good flame retardant properties and outstanding mechanical property simultaneously, and its notched Izod impact strength can reach 50KJ/m
2, and intensity and rigidity also remain on higher level.
Embodiment 4
A kind of preparation method of high-strength high-toughness flame-resistant polypropylene composite material comprises the following steps:
(1) with polypropylene 45kg, maleic anhydride inoculated polypropylene 2kg plastifying fusion under 200 ℃ of conditions, obtain the acrylic resin melt; With the melt impregnation of continuous glass fibre 40kg through acrylic resin, make the glass fibre complete wetting; Above-mentioned glass fibre is drawn by creel, through the tensioning roller adjustment of tonicity, enter the melt impregnation die head, realize dispersion and the infiltration of fiber in die head, the content of the control of export fiber of the fiber by die head is 40kg, cooling curing is cut into 10mm length through dicing machine, obtains long glass fiber reinforced polypropylene composite material;
(2) acrylic resin 40kg, terpolymer EP rubber EPDM 5kg, TDE 30kg are joined carried out high-speed mixing in high-speed mixer 5 minutes, then put into twin screw extruder, extrude at 180 ℃ of temperature and granulation, obtain the toughening flame-proof master batch;
(3) with long glass fiber reinforced polypropylene composite material 40kg and toughening flame-proof master batch 60kg, join to mix in high-speed mixer and get final product.
Embodiment 5
A kind of preparation method of high-strength high-toughness flame-resistant polypropylene composite material comprises the following steps:
(1) with polypropylene 60kg, compatilizer glycidyl methacrylate and polyacrylic multipolymer 3kg, lubricant Poly Propylene Wax 1kg and irgasfos 168 1kg plastifying fusion under 200 ℃ of conditions, obtain the acrylic resin melt; With the melt impregnation of continuous glass fibre 50kg through described acrylic resin, make the glass fibre complete wetting; Above-mentioned glass fibre is drawn by creel, through the tensioning roller adjustment of tonicity, enter the melt impregnation die head, realize dispersion and the infiltration of fiber in die head, the content of the control of export fiber of the fiber by die head is 50kg, cooling curing is cut into 12mm length through dicing machine, obtains long glass fiber reinforced polypropylene composite material;
(2) the mixed fillers 10kg that acrylic resin 60kg, terpolymer EP rubber EPDM 15kg, TDE 50kg, antioxidant 1010 1kg, silicon-dioxide and wollastonite is consisted of joins and carried out high-speed mixing in high-speed mixer 10 minutes, then put into twin screw extruder, extrude at 220 ℃ of temperature and granulation, obtain the toughening flame-proof master batch;
(3) with long glass fiber reinforced polypropylene composite material 60kg and toughening flame-proof master batch 40kg, join to mix in high-speed mixer and get final product.
Embodiment 6
A kind of preparation method of high-strength high-toughness flame-resistant polypropylene composite material comprises the following steps:
(1) with polypropylene 50kg, compatilizer glycidyl methacrylate and polyacrylic multipolymer 3kg, lubricant polyethylene wax 0.5kg and oxidation inhibitor 1098 0.5kg plastifying fusion under 210 ℃ of conditions, obtain the acrylic resin melt; With the melt impregnation of continuous glass fibre 42kg through acrylic resin, make the glass fibre complete wetting; Above-mentioned glass fibre is drawn by creel, through the tensioning roller adjustment of tonicity, enters the melt impregnation die head, realizes dispersion and the infiltration of fiber in die head, and cooling curing is cut into 12mm length through dicing machine, obtains long glass fiber reinforced polypropylene composite material;
(2) acrylic resin 50kg, polystyrene block copolymer SEBS 10kg, ammonium polyphosphate 40kg, oxidation inhibitor 1098 0.5kg and other auxiliary agent 10kg are joined carried out high-speed mixing in high-speed mixer 10 minutes, wherein, other auxiliary agent includes lubricant amide waxe, Zinic stearas and coupling agent KH550, then put into twin screw extruder, extrude at 200 ℃ of temperature and granulation, obtain the toughening flame-proof master batch;
(3) with long glass fiber reinforced polypropylene composite material 55kg and toughening flame-proof master batch 45kg, join to mix in high-speed mixer and get final product.
Embodiment 7
A kind of preparation method of high-strength high-toughness flame-resistant polypropylene composite material comprises the following steps:
(1) with mixture 0.8kg plastifying fusion under 190 ℃ of conditions of polypropylene 55kg, compatilizer maleic anhydride inoculated polypropylene 2.5kg, lubricant amide waxe 0.5kg and antioxidant 1010 and oxidation inhibitor DSTDP, obtain the acrylic resin melt; With the melt impregnation of continuous glass fibre 45kg through acrylic resin, make the glass fibre complete wetting; Above-mentioned glass fibre is drawn by creel, through the tensioning roller adjustment of tonicity, enters the melt impregnation die head, realizes dispersion and the infiltration of fiber in die head, and cooling curing is cut into 12mm length through dicing machine, obtains long glass fiber reinforced polypropylene composite material;
(2) mixture 45kg, the oxidation inhibitor DSTDP 0.8kg of acrylic resin 55kg, polyolefin elastomer 12kg, magnesium hydroxide and antimonous oxide and other auxiliary agent 8kg are joined carried out high-speed mixing in high-speed mixer 10 minutes, wherein, other auxiliary agent includes lubricant paraffin, calcium stearate and coupling agent KH590 and filler barium sulfate and clay, then put into twin screw extruder, extrude at 210 ℃ of temperature and granulation, obtain the toughening flame-proof master batch;
(3) with long glass fiber reinforced polypropylene composite material 60kg and toughening flame-proof master batch 40kg, join to mix in high-speed mixer and get final product.
Embodiment 8
A kind of preparation method of high-strength high-toughness flame-resistant polypropylene composite material comprises the following steps:
(1) with mixture 0.8kg plastifying fusion under 195 ℃ of conditions of polypropylene 55kg, compatilizer maleic anhydride inoculated polypropylene 2.5kg, lubricant amide waxe 0.5kg and antioxidant 1010 and oxidation inhibitor DSTDP, obtain the acrylic resin melt; With the melt impregnation of continuous glass fibre 45kg through acrylic resin, make the glass fibre complete wetting; Above-mentioned glass fibre is drawn by creel, through the tensioning roller adjustment of tonicity, enters the melt impregnation die head, realizes dispersion and the infiltration of fiber in die head, and cooling curing is cut into 12mm length through dicing machine, obtains long glass fiber reinforced polypropylene composite material;
(2) mixture 45kg, the oxidation inhibitor DSTDP 0.8kg of acrylic resin 55kg, polyolefin elastomer 12kg, magnesium hydroxide and antimonous oxide and other auxiliary agent 8kg are joined carried out high-speed mixing in high-speed mixer 10 minutes, wherein, other auxiliary agent includes lubricant paraffin, calcium stearate and coupling agent KH590 and filler barium sulfate and clay, then put into twin screw extruder, extrude at 220 ℃ of temperature and granulation, obtain the toughening flame-proof master batch;
(3) with long glass fiber reinforced polypropylene composite material 50kg and toughening flame-proof master batch 50kg, join to mix in high-speed mixer and get final product.
Embodiment 9
A kind of preparation method of high-strength high-toughness flame-resistant polypropylene composite material comprises the following steps:
(1) the hybrid lubricant 0.8kg that polypropylene 56kg, compatilizer maleic anhydride inoculated polypropylene 2.4kg, calcium stearate and Zinic stearas is consisted of and mixture 0.8kg plastifying fusion under 200 ℃ of conditions of oxidation inhibitor DSTDP obtain the acrylic resin melt; With the melt impregnation of continuous glass fibre 46kg through acrylic resin, make the glass fibre complete wetting; Above-mentioned glass fibre is drawn by creel, through the tensioning roller adjustment of tonicity, enters the melt impregnation die head, realizes dispersion and the infiltration of fiber in die head, and cooling curing is cut into 10mm length through dicing machine, obtains long glass fiber reinforced polypropylene composite material;
(2) acrylic resin 55kg, polyolefin elastomer 12kg, antimonous oxide 45kg, oxidation inhibitor 1098 0.8kg and other auxiliary agent 9kg are joined carried out high-speed mixing in high-speed mixer 10 minutes, wherein, other auxiliary agent includes magnesium stearate lubricant and kaolin filler, then put into twin screw extruder, extrude at 190 ℃ of temperature and granulation, obtain the toughening flame-proof master batch;
(3) with long glass fiber reinforced polypropylene composite material 50kg and toughening flame-proof master batch 50kg, join to mix in high-speed mixer and get final product.
Embodiment 10
A kind of preparation method of high-strength high-toughness flame-resistant polypropylene composite material comprises the following steps:
(1) mixture 0.7kg plastifying fusion under 220 ℃ of conditions that the hybrid lubricant 0.8kg that polypropylene 54kg, compatilizer glycidyl methacrylate and polyacrylic multipolymer 2.2kg, Poly Propylene Wax and polyethylene wax is consisted of and antioxidant 1010 and oxidation inhibitor 1098 consist of obtains the acrylic resin melt; With the melt impregnation of continuous glass fibre 42kg through acrylic resin, make the glass fibre complete wetting; Above-mentioned glass fibre is drawn by creel, through the tensioning roller adjustment of tonicity, enters the melt impregnation die head, realizes dispersion and the infiltration of fiber in die head, and cooling curing is cut into 10mm length through dicing machine, obtains long glass fiber reinforced polypropylene composite material;
(2) the mixture 0.8kg of acrylic resin 55kg, polyolefin elastomer 12kg, magnesium hydroxide 42kg, oxidation inhibitor 1098 and antioxidant 1010 and other auxiliary agent 7kg are joined carried out high-speed mixing in high-speed mixer 10 minutes, wherein, other auxiliary agent includes lubricant polyethylene wax and coupling agent KH590, then put into twin screw extruder, extrude at 220 ℃ of temperature and granulation, obtain the toughening flame-proof master batch;
(3) with long glass fiber reinforced polypropylene composite material 56kg and toughening flame-proof master batch 44kg, join to mix in high-speed mixer and get final product.
Claims (10)
1. high-strength high-toughness flame-resistant polypropylene composite material, it is characterized in that: this material is made by the component that comprises following weight part:
Long glass fiber reinforced polypropylene composite material 40-60,
Toughening flame-proof master batch 40-60.
2. a kind of high-strength high-toughness flame-resistant polypropylene composite material according to claim 1, is characterized in that, described long glass fiber reinforced polypropylene composite material is made by the component that comprises following weight part:
Polypropylene 45-60,
Glass fibre 40-50,
Compatilizer 2-3,
Lubricant 0-1,
Oxidation inhibitor 0-1.
3. a kind of high-strength high-toughness flame-resistant polypropylene composite material according to claim 1, is characterized in that, described toughening flame-proof master batch is made by the component that comprises following weight part:
Polypropylene 40-60,
Fire retardant 30-50,
Toughner 5-15,
Oxidation inhibitor 0-1,
Other auxiliary agents 0-10.
4. a kind of high-strength high-toughness flame-resistant polypropylene composite material according to claim 2, it is characterized in that, described compatilizer be selected from glycidyl methacrylate and polyacrylic multipolymer or maleic anhydride inoculated polypropylene or in one or both; Described lubricant is wax, stearic acid or stearate; Described wax is selected from one or more in paraffin, Poly Propylene Wax, polyethylene wax or amide waxe; Described stearate is selected from one or more in Zinic stearas, calcium stearate, barium stearate.
5. according to claim 2 or 3 described a kind of high-strength high-toughness flame-resistant polypropylene composite material, it is characterized in that: described oxidation inhibitor is selected from one or more in Hinered phenols, hindered amines, phosphorous acid ester or thioether kind antioxidant, comprises one or more in antioxidant 1010, oxidation inhibitor 1098, irgasfos 168 or oxidation inhibitor DSTDP.
6. a kind of high-strength high-toughness flame-resistant polypropylene composite material according to claim 3, it is characterized in that, described fire retardant is selected from one or more in halogen containing flame-retardant, expansion type flame retardant or inorganic combustion inhibitor, comprises one or more in TDE, ammonium polyphosphate, magnesium hydroxide or antimonous oxide; Described toughner is thermoplastic elastic body, is selected from one or more in terpolymer EP rubber EPDM, polystyrene block copolymer SEBS or polyolefin elastomer.
7. a kind of high-strength high-toughness flame-resistant polypropylene composite material according to claim 3, it is characterized in that: described other auxiliary agents are selected from one or more in lubricant, coupling agent or filler; Described lubricant is wax, stearic acid or stearate, and described wax is selected from one or more in paraffin, Poly Propylene Wax, polyethylene wax or amide waxe; Described stearate is selected from one or more in Zinic stearas, calcium stearate, barium stearate etc.; Described coupling agent comprises silane coupling agent or titanate coupling agent, is selected from coupling agent KH550 or KH590; Described filler is selected from one or more in talcum powder, calcium carbonate, barium sulfate, clay, kaolin, silicon-dioxide, wollastonite or vermiculite.
8. a method for preparing the high-strength high-toughness flame-resistant polypropylene composite material, is characterized in that, the method comprises the following steps:
(1) get the raw materials ready according to following component and weight part content:
Long glass fiber reinforced polypropylene composite material 40-60,
Toughening flame-proof master batch 40-60;
(2) long glass fiber reinforced polypropylene composite material and toughening flame-proof master batch are joined in high-speed mixer mix, namely get product.
9. the method for preparing the high-strength high-toughness flame-resistant polypropylene composite material according to claim 8, is characterized in that, described long glass fiber reinforced polypropylene composite material adopts the following steps preparation:
(1) polypropylene, compatilizer, lubricant and oxidation inhibitor are mixed, and under 180～220 ℃ of conditions plastifying fusion, obtain the acrylic resin melt of melting;
(2) be extruded in the melt impregnation mould by the resin melt of twin screw extruder with melting, simultaneously continuous glass fibre drawn by creel, enter the dipping die head of the acrylic resin melt that contains melting, realize dispersion and the infiltration of fiber in die head;
(3) step (2) is obtained composite cools down and solidify, then be cut into according to demand the particle of corresponding length through dicing machine, namely obtain long glass fiber reinforced polypropylene composite material.
10. the method for preparing the high-strength high-toughness flame-resistant polypropylene composite material according to claim 8, is characterized in that, described toughening flame-proof master batch adopts the following steps preparation:
(1) polypropylene, fire retardant, toughner, oxidation inhibitor and other auxiliary agents are joined carried out high-speed mixing in high-speed mixer 5～10 minutes;
(2) said mixture is put into twin screw extruder, extrude and granulation, obtain the toughening flame-proof master batch.
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| CN109370062A (en) * | 2018-09-21 | 2019-02-22 | 上海金发科技发展有限公司 | A kind of anti-ball falling impact, long glass fiber-reinforced polypropylene materials of good appearance and its preparation method and application |
| CN109535559B (en) * | 2018-11-27 | 2021-11-12 | 江苏万纳普新材料科技有限公司 | Efficient enhanced flame-retardant functional master batch for direct injection molding of polypropylene and preparation method thereof |
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