CN103030889A - Liquid crystal polymer reinforced and toughened GFRPP composite and preparation method thereof - Google Patents
Liquid crystal polymer reinforced and toughened GFRPP composite and preparation method thereof Download PDFInfo
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- CN103030889A CN103030889A CN2012105882625A CN201210588262A CN103030889A CN 103030889 A CN103030889 A CN 103030889A CN 2012105882625 A CN2012105882625 A CN 2012105882625A CN 201210588262 A CN201210588262 A CN 201210588262A CN 103030889 A CN103030889 A CN 103030889A
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Abstract
The invention discloses a liquid crystal polymer reinforced and toughened GFRPP (glass fiber reinforced polypropylene) composite which comprises the following raw materials in parts by weight: 30 parts of glass fiber, 70 parts of polypropylene, and 5-20 parts of liquid crystal polymer. The invention also discloses a preparation method of the liquid crystal polymer reinforced and toughened GFRPP composite, which comprises the steps that the glass fiber, polypropylene and the liquid crystal polymer are mixed and dried, and then added to a twin-screw extruder for extrusion, and passes through a cooling device, a hauling device and a pelleting device, and the composite is obtained. With the adoption of the preparation method, a reinforcing effect and a toughening effect can be achieved simultaneously; the processablility is good; the surface gloss of the liquid crystal polymer reinforced and toughened GFRPP composite is better than that of a glass fiber reinforced polypropylene composite; the composite is simple in preparation technological process, low in rejection rate and low in cost; and continuous production can be achieved.
Description
Technical field
The present invention relates to a kind of polypropylene material, specifically liquid crystal polymer strengthens toughness reinforcing GFRPP matrix material and preparation method thereof, belongs to the polymer modification field.
Background technology
Glass-reinforced polypropylene is a resinoid muti-phase material that is most widely used, and at present in the field that requires high strength, high rigidity, fiber glass reinforced polypropylene can replace senior engineering plastic, metal, foundry goods, thermosetting resin.And all being better than traditional metallic substance in all many-sides such as specific tenacity, corrosion-resistant, electrical property, designability, the ratios of performance to price, is the class matrix material that application surface is the widest on the engineering, Applicative time is the longest.Glass-reinforced polypropylene has all played very important effect at numerous areas such as aerospace, boats and ships, vehicle, ocean, chemical industry, water treatment, electrical equipment.Yet the interpolation of glass fibre can cause melt viscosity to increase, and fiber is also larger to the wearing and tearing of equipment, even affects the processing characteristics of goods, the defectives such as floating fine phenomenon, buckling deformation occur.
Liquid crystalline polymers is a kind of polymer that is made of stiff chain and flexible molecule chain, and the flowability that can show existing liquid under certain physical condition has again the material of the physicals anisotropic states of crystal.When liquid crystalline polymers and thermoplastics blend, can form fento in plastics under certain condition, reach preferably fiber reinforcement effect, this fiber dispersion is even, and reinforced effects is good.In addition, liquid crystalline polymers has the performance of shear shinning, can reduce the melt viscosity of matrix material, and the flowability of matrix material is increased, and alleviates the wearing and tearing to equipment.
Summary of the invention
For above shortcomings in the prior art, the liquid crystal polymer that the invention provides the advantage of a kind of comprehensive glass fibre and liquid crystalline polymers strengthens toughness reinforcing GFRPP matrix material.
Simultaneously, the present invention also provides a kind of liquid crystal polymer to strengthen toughness reinforcing GFRPP composite material and preparation method thereof.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
Liquid crystal polymer strengthens toughness reinforcing GFRPP matrix material, is comprised of following weight part raw material: glass fibre 30, polypropylene 70, liquid crystalline polymers 5～20.
As a preferred embodiment of the present invention, the filament diameter of described glass fibre is 10 μ m, and filament length is 4mm, and size content is 0.7%, and water ratio is 0.05%, and is injection stage.
As another kind of preferred version of the present invention, described polyacrylic melt flow rate (MFR) is 2.76g/min, and is extrusion grade.
As another preferred version of the present invention, the melt flow rate (MFR) of described liquid crystalline polymers is 5.3g/10min, and fusing point is 283 ℃, and second-order transition temperature is 100 ℃, and is atactic polyester.
Liquid crystal polymer strengthens toughness reinforcing GFRPP composite manufacture method, adopts in the method following weight part raw material: glass fibre 30, polypropylene 70, liquid crystalline polymers 5～20;
The method comprises the steps:
(1), with behind glass fibre, polypropylene and the liquid crystalline polymers combination drying, join on the twin screw extruder and extrude;
(2), obtain matrix material by cooling, traction and prilling granulator again.
Compared with prior art, the present invention has following advantage:
1, the present invention is take glass fibre, Reinforced Polypropylene as base mateiral, adding liquid crystal polymer strengthens toughness reinforcing to matrix material, the advantage of comprehensive glass fibre and liquid crystalline polymers, not only had the processing characteristics of in-situ composite excellence, but also had the mechanical property of glass fiber reinforced polypropylene material.
2, by preparation method of the present invention, can reach simultaneously the toughness reinforcing effect of enhancing, and good processability, surface gloss is good than glass fiber reinforced polypropylene composite material; In addition, this composite manufacture technological process is simple, and scrap rate is little, and cost is low, and can realize serialization production.
Embodiment
Liquid crystal polymer strengthens toughness reinforcing GFRPP matrix material, is comprised of following weight part raw material: glass fibre 30, polypropylene 70, liquid crystalline polymers 5～20.
The filament diameter of glass fibre is 10 μ m, and filament length is 4mm, and size content is 0.7%, and water ratio is 0.05%, and is injection stage.Polyacrylic melt flow rate (MFR) is 2.76g/min, and is extrusion grade.The melt flow rate (MFR) of liquid crystalline polymers is 5.3g/10min, and fusing point is 283 ℃, and second-order transition temperature is 100 ℃, and is atactic polyester.
Liquid crystal polymer strengthens toughness reinforcing GFRPP composite manufacture method, adopts in the method following weight part raw material: glass fibre 30, polypropylene 70, liquid crystalline polymers 5～20.The method comprises the steps:
(1), with behind glass fibre, polypropylene and the liquid crystalline polymers combination drying, join on the twin screw extruder and extrude;
(2), obtain matrix material by cooling, traction and prilling granulator again.
Embodiment 1
Get the F401 type acrylic resin of the Lanzhou of China petrochemical iy produced of 70g, the glass fibre that the international matrix material in the Chongqing of 30g is produced, the Vectra A950 type liquid crystalline polymers that the U.S. Ticona company of 5g produces, as shown in table 1, behind above-mentioned each component combination drying, join on the twin screw extruder and extrude, and then obtain matrix material by cooling, traction and prilling granulator.
Embodiment 2
Get the F401 type acrylic resin of the Lanzhou of China petrochemical iy produced of 70g, the glass fibre that the international matrix material in the Chongqing of 30g is produced, the Vectra A950 type liquid crystalline polymers that the U.S. Ticona company of 10g produces, as shown in table 1, behind above-mentioned each component combination drying, join on the twin screw extruder and extrude, and then obtain matrix material by cooling, traction and prilling granulator.
Embodiment 3
Get the F401 type acrylic resin of the Lanzhou of China petrochemical iy produced of 70g, the glass fibre that the international matrix material in the Chongqing of 30g is produced, the Vectra A950 type liquid crystalline polymers that the U.S. Ticona company of 15g produces, as shown in table 1, behind above-mentioned each component combination drying, join on the twin screw extruder and extrude, and then obtain matrix material by cooling, traction and prilling granulator.
Embodiment 4
Get the F401 type acrylic resin of the Lanzhou of China petrochemical iy produced of 70g, the glass fibre that the international matrix material in the Chongqing of 30g is produced, the Vectra A950 type liquid crystalline polymers that the U.S. Ticona company of 20g produces, as shown in table 1, behind above-mentioned each component combination drying, join on the twin screw extruder and extrude, and then obtain matrix material by cooling, traction and prilling granulator.
Comparative Examples 1
Get the F401 type acrylic resin as a comparison case 1 of the Lanzhou of China petrochemical iy produced of 100g, as shown in table 1.
Comparative Examples 2
Get the F401 type acrylic resin of the Lanzhou of China petrochemical iy produced of 70g, the glass fibre that the international matrix material in the Chongqing of 30g is produced, as shown in table 1, behind above-mentioned each component combination drying, join on the twin screw extruder and extrude, and then obtain matrix material by cooling, traction and prilling granulator.
Table 1:
| Component % | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative Examples 1 | Comparative Examples 2 |
| Polypropylene | 70 | 70 | 70 | 70 | 100 | 70 |
| Glass fibre | 30 | 30 | 30 | 30 | - | 30 |
| Liquid crystalline polymers | 5 | 10 | 15 | 20 | - | - |
The tensile strength of the matrix material that above-mentioned 4 embodiment and 2 Comparative Examples are obtained is measured by the electronic universal tension testing machine, and shock strength is measured by radial-boom impact tester, and its test result is as shown in table 2.
Table 2:
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative Examples 1 | Comparative Examples 2 |
| Tensile strength (Mpa) | 79.1 | 72 | 64.4 | 59.5 | 34.7 | 48.6 |
| Shock strength (KJ/m2) | 5.6 | ?5.2 | 4.8 | 4.6 | 4.8 | 4.8 |
From the measurement result of each embodiment and Comparative Examples as can be known, adding liquid crystal polymer all is improved to tensile strength and the shock strength of GFRPP matrix material.Particularly according to following weight part: glass fibre 30, polypropylene 70, liquid crystalline polymers 5～20, after the adding liquid crystalline polymers, the tensile strength of matrix material, shock strength improve rapider, and effect is more obvious.In addition, the interpolation of liquid crystalline polymers improves the surface quality of goods, has solved to a certain extent glass fibre and has exposed i.e. floating fine phenomenon.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (5)
1. liquid crystal polymer strengthens toughness reinforcing GFRPP matrix material, it is characterized in that, this matrix material is comprised of following weight part raw material: glass fibre 30, polypropylene 70, liquid crystalline polymers 5～20.
2. liquid crystal polymer according to claim 1 strengthens toughness reinforcing GFRPP matrix material, it is characterized in that, the filament diameter of described glass fibre is 10 μ m, and filament length is 4mm, and size content is 0.7%, and water ratio is 0.05%, and is injection stage.
3. liquid crystal polymer according to claim 1 strengthens toughness reinforcing GFRPP matrix material, it is characterized in that, described polyacrylic melt flow rate (MFR) is 2.76g/min, and is extrusion grade.
4. liquid crystal polymer according to claim 1 strengthens toughness reinforcing GFRPP matrix material, it is characterized in that, the melt flow rate (MFR) of described liquid crystalline polymers is 5.3g/10min, and fusing point is 283 ℃, and second-order transition temperature is 100 ℃, and is atactic polyester.
5. liquid crystal polymer strengthens toughness reinforcing GFRPP composite manufacture method, it is characterized in that: adopt in the method following weight part raw material: glass fibre 30, polypropylene 70, liquid crystalline polymers 5～20;
The method comprises the steps:
(1), with behind glass fibre, polypropylene and the liquid crystalline polymers combination drying, join on the twin screw extruder and extrude;
(2), obtain matrix material by cooling, traction and prilling granulator again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105882625A CN103030889A (en) | 2012-12-29 | 2012-12-29 | Liquid crystal polymer reinforced and toughened GFRPP composite and preparation method thereof |
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| CN2012105882625A CN103030889A (en) | 2012-12-29 | 2012-12-29 | Liquid crystal polymer reinforced and toughened GFRPP composite and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106589587A (en) * | 2016-12-05 | 2017-04-26 | 广州科苑新型材料有限公司 | Polypropylene composite material and preparation method thereof |
| CN107841143A (en) * | 2017-11-16 | 2018-03-27 | 东北大学 | A kind of method for strengthening silicon rubber using liquid crystal polymer fibrillation |
-
2012
- 2012-12-29 CN CN2012105882625A patent/CN103030889A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 何嘉松等: "《热致液晶聚合物对短玻璃纤维增强聚丙烯加工性、结构与性能的改善》", 《高分子学报》 * |
| 张军等: "《聚丙烯/ 热致液晶聚合物/ 玻璃纤维混杂复合材料的制备及性能研究》", 《中国塑料》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106589587A (en) * | 2016-12-05 | 2017-04-26 | 广州科苑新型材料有限公司 | Polypropylene composite material and preparation method thereof |
| CN106589587B (en) * | 2016-12-05 | 2019-08-06 | 广州科苑新型材料有限公司 | PP composite material and preparation method thereof |
| CN107841143A (en) * | 2017-11-16 | 2018-03-27 | 东北大学 | A kind of method for strengthening silicon rubber using liquid crystal polymer fibrillation |
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Application publication date: 20130410 |