CN102617920B - Glass-fiber reinforced bimodal polyethylene material and preparation process thereof - Google Patents
Glass-fiber reinforced bimodal polyethylene material and preparation process thereof Download PDFInfo
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- CN102617920B CN102617920B CN201210109609.3A CN201210109609A CN102617920B CN 102617920 B CN102617920 B CN 102617920B CN 201210109609 A CN201210109609 A CN 201210109609A CN 102617920 B CN102617920 B CN 102617920B
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Abstract
The invention discloses a glass-fiber reinforced bimodal polyethylene material and a preparation process thereof. The glass-fiber reinforced bimodal polyethylene material is characterized by comprising, by weight, 50 parts to 87 parts of bimodal polyethylene, 10 parts to 40 parts of glass fiber, 2 parts to 10 parts of compatilizers, 0.2 parts to 1.0 part of heat stabilizers, 0.1 parts to 1.0 part of processing aids, and 0 part to 12 parts of filling modified agents. The preparation process includes adding the bimodal polyethylene, the compatilizers, the heat stabilizers, the processing aids and the filling modified agents proportionally into a mixing device, subjecting the mixture to fusing, mixing and dispersing at the temperature between 160 DEG C and 250 DEG C, simultaneously, adding the glass fiber from a side feed inlet, and finally performing extrusion and granulation. According to the glass-fiber reinforced bimodal polyethylene material and the preparation process thereof, the provided material has a good stiffness and a low-temperature toughness, and simultaneously has a good processing performance; besides, the preparation process is simple and convenient, easy to operate and energy-saving, and conforms to the industrial production requirement.
Description
Technical field
The present invention relates to a kind of glass and strengthen bimodal polyethylene materials and preparation method thereof, be specifically related to a kind of glass enhancing modified bimodal polyethylene materials for electrical function part and preparation method thereof.
Background technology
Polyethylene, as one of five large general-purpose plastics, because it has good toughness, electrical insulating property and workability, has a wide range of applications, as food product pack, electrical package, tubing, electric wire etc. in daily life and industrial and agricultural production.Along with the development of polyolefin catalyst and production technique, the poly new variety with different qualities are constantly developed, and bimodal polyethylene is exactly one of them.
The characteristic feature of bimodal polyethylene product is that the polymeric chain in molecule is divided into low relative molecular mass and high molecular weight two portions, the molecular weight distribution of each polymeric chain is all narrow, but the distribution of the relative molecular mass of total polymkeric substance presents wide bimodal form.The harmony that this relative molecular mass distributes makes bimodal polyethylene possess good mechanical property and the processing characteristicies such as melt strength is high, good heat resistance, good rigidly, creep resistance simultaneously.
Different with common blended polyethylene, high molecular part and the low molecular weight part of bimodal polyethylene have realized even mixing in molecule rank, and the polyethylene of two kinds of different relative molecular weights has only been realized the mixing in macroscopic view by twin screw, be difficult to reach the mixing on microcosmic, therefore in physicals and processing characteristics less than same other bimodal polyethylene of level.
Because the workability of bimodal polyethylene, in actual injection moulding or extrusion moulding process, can greatly improve the shaping efficiency of equipment, shorten shaping cycle, reduce injection time, save production cost, particularly, along with the implementation of national environmental protection energy saving policy, bimodal polyethylene product will be more in all respects of life that enter society.
Summary of the invention
The object of this invention is to provide a kind of glass and strengthen bimodal polyethylene materials and preparation method thereof, improve single production efficiency of equipment, reduce the energy consumption of production process, meet industry and the society demand to polyethylene product development.
For achieving the above object, the invention provides a kind of glass and strengthen bimodal polyethylene materials, it is characterized in that, comprise the following component in weight part:
Bimodal polyethylene 50-87 part;
Glass fibre 10-40 part;
Compatilizer 2-10 part;
Thermo-stabilizer 0.2-1.0 part;
Processing aid 0.1-1.0 part;
Filling modifying agent 0-12 part.
Preferably, described bimodal polyethylene is that molecular weight distribution presents bimodal or bimodal above polyethylene.
Preferably, described glass fibre is alkali free glass fibre.
Preferably, described compatilizer is polar monomer graft polymkeric substance, its polymeric matrix is polyethylene, bimodal polyethylene, polypropylene, ethene-α-ethylene-octene copolymer, the multipolymer of vinylbenzene and divinyl, polyethylene-polystyrene-polypropylene terpolymer, ethylene-propylene-butadiene terpolymer, the mixture of any one or a few in ethylene-acrylate copolymer and ethylene-acrylate-glycidyl methacrylate copolymer, its polar monomer is any one or a few the mixture in maleic anhydride and analogue and acrylicacidandesters analog derivative.
Preferably, described thermo-stabilizer is the mixture class of phenols, amine, phosphorous acid esters, half Hinered phenols, acryl functional group and monothioester and any one or a few the mixture in calixarene kind thermo-stabilizer.
Preferably, described processing aid is any one or a few the mixture in low molecule ester class, metal soap, stearic acid complex ester class and amides processing aid.
Preferably, described filling modifying agent is any one or a few the mixture in barium sulfate, calcium carbonate, talcum powder, mica and polynite.
The present invention also provides above-mentioned glass to strengthen the preparation method of bimodal polyethylene materials, it is characterized in that, bimodal polyethylene, compatilizer, thermo-stabilizer, processing aid and filling modifying agent are added in mixing facilities in proportion, at 160-250 ℃, carry out melting mixing dispersion, simultaneously, glass fibre is added from side spout, finally extrude, granulation.
Described mixing facilities is single screw extrusion machine or twin screw extruder.
The present invention utilizes the workability of bimodal polyethylene, in actual injection moulding or extrusion moulding process, can greatly improve the shaping efficiency of equipment, shorten shaping cycle, reduce injection time, save production cost, particularly, along with the implementation of national environmental protection energy saving policy, bimodal polyethylene product will be more in all respects of life that enter society.
When the material that adopts method provided by the invention to prepare has good rigidity and low-temperature flexibility, there is good processing characteristics, under identical condition, its injection pressure used is only common enhanced polyethylene 1/3rd, on producing, greatly save energy consumption, met the development trend of conservation-minded society.In addition, preparation method provided by the invention is simple and convenient, and easily operation, meets industrialization production requirements.
Embodiment
Below by embodiment and comparative example, further set forth the present invention.Glass fibre in embodiment 1-4 and comparative example 1-2 is selected alkali free glass fibre (508A, megalith glass); Compatilizer is selected maleic anhydride graft Low Density Polyethylene (AD-70, Foshan Bai Chen), horse Lay anhydride grafted lldpe (PC-3C, Foshan Bai Chen); Thermo-stabilizer is selected Irganox 168 (CIBA company), Irganox 1010 (CIBA company); Processing aid is selected erucicamide, Zinic stearas; Filling modifying agent is selected barium sulfate (AB-3000N1, sky, Huangpu, Guangzhou is safe), talcum powder (AH-1250N1, Heshan chemical industry), calcium carbonate (AC-MLT03, Dongguan Mei Litai).
Embodiment 1
Take bimodal polyethylene (FB2230, Borealis) 70 kilograms, 11.5 kilograms, 7 kilograms of AD-70,1,010 0.5 kilograms of Irganox, 168 0.5 kilograms of Irganox, 0.5 kilogram of erucicamide and barium sulfate, join length-to-diameter ratio and be in the twin screw extruder of 40: 1 and carry out melting mixing dispersion, extrusion temperature is 180 ℃,, 10 kilograms, glass fibre is added from side spout meanwhile, finally extrude, granulation.
By above-mentioned its performance of the testing of materials making.Test result is listed as follows:
| Performance index | Testing standard | Conditional parameter | Unit | Spatter test result |
| Tensile strength | ISO 527 | 10mm/min | MPa | 38 |
| Flexural strength | ISO 178 | 2mm/min | MPa | 44 |
| Modulus in flexure | ISO 178 | 2mm/min | MPa | 1050 |
| Shock strength | ISO 180 | 23℃ | KJ/m 2 | 9.5 |
| Density | ISO 1183 | 23℃ | g/cm 3 | 1.06 |
Embodiment 2
Take bimodal polyethylene (FB2310, Borealis) 66 kilograms, 7.5 kilograms of 5 kilograms of AD-70,1,010 0.5 kilograms of Irganox, 168 0.5 kilograms of Irganox, 0.5 kilogram of erucicamide and talcum powder, join length-to-diameter ratio and be in the twin screw extruder of 40: 1 and carry out melting mixing dispersion, extrusion temperature is 180 ℃,, 20 kilograms, glass fibre is added from side spout meanwhile, finally extrude, granulation.
By above-mentioned its performance of the testing of materials making.Test result is listed as follows:
| Performance index | Testing standard | Conditional parameter | Unit | Test result |
| Tensile strength | ISO 527 | 10mm/min | MPa | 47 |
| Flexural strength | ISO 178 | 2mm/min | MPa | 59 |
| Modulus in flexure | ISO 178 | 2mm/min | MPa | 1500 |
| Shock strength | ISO 180 | 23℃ | KJ/m 2 | 12.5 |
| Density | ISO 1183 | 23℃ | g/cm 3 | 1.15 |
Embodiment 3
Take bimodal polyethylene (FB2310, Borealis) 63 kilograms, 0.5 kilogram of 5 kilograms of AD-105,1,010 0.5 kilograms of Irganox, 168 0.5 kilograms of Irganox, 0.5 kilogram of Zinic stearas and talcum powder, join length-to-diameter ratio and be in the twin screw extruder of 40: 1 and carry out melting mixing dispersion, extrusion temperature is 180 ℃,, 30 kilograms, glass fibre is added from side spout meanwhile, finally extrude, granulation.
By above-mentioned its performance of the testing of materials making.Test result is listed as follows:
| Performance index | Testing standard | Conditional parameter | Unit | Test result |
| Tensile strength | ISO 527 | 10mm/min | MPa | 66 |
| Flexural strength | ISO 178 | 2mm/min | MPa | 81 |
| Modulus in flexure | ISO 178 | 2mm/min | MPa | 2600 |
| Shock strength | ISO 180 | 23℃ | KJ/m 2 | 21.5 |
| Density | ISO 1183 | 23℃ | g/cm 3 | 1.16 |
Embodiment 4
Take bimodal polyethylene (FB2230, Borealis) 54 kilograms, 2.5 kilograms, 5 kilograms of AD-70,1,010 0.5 kilograms of Irganox, 168 0.5 kilograms of Irganox, 0.5 kilogram of calcium stearate and calcium carbonate, join length-to-diameter ratio and be in the twin screw extruder of 40: 1 and carry out melting mixing dispersion, extrusion temperature is 180 ℃,, 37 kilograms, glass fibre is added from side spout meanwhile, finally extrude, granulation.
By above-mentioned its performance of the testing of materials making.Test result is listed as follows:
| Performance index | Testing standard | Conditional parameter | Unit | Test result |
| Tensile strength | ISO 527 | 10mm/min | MPa | 75 |
| Flexural strength | ISO 178 | 2mm/min | MPa | 95 |
| Modulus in flexure | ISO 178 | 2mm/min | MPa | 3200 |
| Shock strength | ISO 180 | 23℃ | KJ/m 2 | 27 |
| Density | ISO 1183 | 23℃ | g/cm 3 | 1.22 |
Comparative example 1
Take polyethylene (HDPE 5000S, Lanzhou Petrochemical) 66 kilograms, 5 kilograms of AD-70,1,010 0.5 kilograms of Irganox, 168 0.5 kilograms of Irganox, 0.5 kilogram of calcium stearate, 7.5 kilograms of talcum powder, join length-to-diameter ratio and be in the twin screw extruder of 40: 1 and carry out melting mixing dispersion, extrusion temperature is 180 ℃,, 20 kilograms, glass fibre is added from side spout meanwhile, finally extrude, granulation.
By above-mentioned its performance of the testing of materials making.Test result is listed as follows:
| Performance index | Testing standard | Conditional parameter | Unit | Test result |
| Tensile strength | ISO 527 | 10mm/min | MPa | 42 |
| Flexural strength | ISO 178 | 2mm/min | MPa | 50 |
| Modulus in flexure | ISO 178 | 2mm/min | MPa | 1200 |
| Shock strength | ISO 180 | 23℃ | KJ/m 2 | 10.5 |
| Density | ISO 1183 | 23℃ | g/cm 3 | 1.15 |
Comparative example 2
Take polyethylene (HDPE HMA025, Exxon Mobil) 63 kilograms, 5 kilograms of AD-105,1,010 0.5 kilograms of Irganox, 168 0.5 kilograms of Irganox, 0.5 kilogram of calcium stearate, 0.5 kilogram of talcum powder, join length-to-diameter ratio and be in the twin screw extruder of 40: 1 and carry out melting mixing dispersion, extrusion temperature is 180 ℃,, 30 kilograms, glass fibre is added from side spout meanwhile, finally extrude, granulation.
By above-mentioned its performance of the testing of materials making.Test result is listed as follows:
| Performance index | Testing standard | Conditional parameter | Unit | Test result |
| Tensile strength | ISO 527 | 10mm/min | MPa | 60 |
| Flexural strength | ISO 178 | 2mm/min | MPa | 72 |
| Modulus in flexure | ISO 178 | 2mm/min | MPa | 2100 |
| Shock strength | ISO 180 | 23℃ | KJ/m 2 | 15.5 |
| Density | ISO 1183 | 23℃ | g/cm 3 | 1.16 |
By embodiment 1-4 and comparative example 1-2, on 1000mm spiral-line mould, contrast its processing characteristics.Injection parameters is as follows:
Unit type: shake moral CJ150M3V
Melten gel temperature:
First paragraph: 120 ℃
Second segment: 150 ℃
The 3rd section: 170 ℃
Die temperature: 50 ℃
Injection speed: 20%
Injection pressure: 10%
Back pressure: 5%
Dwell pressure: 0
Under above-mentioned same parameters condition, gained helical length is as follows:
| Helical length/mm | |
| Embodiment 1 | 590 |
| Embodiment 2 | 440 |
| Embodiment 3 | 320 |
| Embodiment 4 | 270 |
| Comparative example 1 | 190 |
| Comparative example 2 | 120 |
Claims (6)
1. glass strengthens a bimodal polyethylene materials, it is characterized in that, comprises the following component in weight part:
Bimodal polyethylene 50-87 part;
Glass fibre 10-40 part;
Compatilizer 2-10 part;
Thermo-stabilizer 0.2-1.0 part;
Processing aid 0.1-1.0 part;
Filling modifying agent 0-12 part.
2. glass as claimed in claim 1 strengthens bimodal polyethylene materials, it is characterized in that, described bimodal polyethylene is that molecular weight distribution presents bimodal or bimodal above polyethylene.
3. glass as claimed in claim 1 strengthens bimodal polyethylene materials, it is characterized in that, described glass fibre is alkali free glass fibre.
4. glass as claimed in claim 1 strengthens bimodal polyethylene materials, it is characterized in that, described compatilizer is polar monomer graft polymkeric substance, its polymeric matrix is polyethylene, polypropylene, the multipolymer of vinylbenzene and divinyl, polyethylene-polystyrene-polypropylene terpolymer, ethylene-propylene-butadiene terpolymer, the mixture of any one or a few in ethylene-acrylate copolymer and ethylene-acrylate-glycidyl methacrylate copolymer, its polar monomer is any one or a few the mixture in maleic anhydride and acrylicacidandesters analog derivative.
5. glass as claimed in claim 1 strengthens bimodal polyethylene materials, it is characterized in that, described thermo-stabilizer is any one or a few the mixture in phenols, amine, phosphorous acid esters, half Hinered phenols and calixarene kind thermo-stabilizer.
6. glass as claimed in claim 1 strengthens bimodal polyethylene materials, it is characterized in that, described filling modifying agent is any one or a few the mixture in barium sulfate, calcium carbonate, talcum powder, mica and polynite.
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| CN108148284A (en) * | 2016-12-05 | 2018-06-12 | 合肥杰事杰新材料股份有限公司 | A kind of weapon packing case material of counter infrared ray detection and preparation method thereof |
| CN112358668A (en) * | 2020-09-28 | 2021-02-12 | 贵州源塑实业有限公司 | Polyethylene general pipe for agricultural irrigation and manufacturing method thereof |
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| CN101412830A (en) * | 2008-12-02 | 2009-04-22 | 上海金发科技发展有限公司 | Non-halogen flame-retardant polypropylene composite material and preparation thereof |
| CN102352063A (en) * | 2011-09-09 | 2012-02-15 | 甄青松 | Oxygen barrier composite material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101412830A (en) * | 2008-12-02 | 2009-04-22 | 上海金发科技发展有限公司 | Non-halogen flame-retardant polypropylene composite material and preparation thereof |
| CN102352063A (en) * | 2011-09-09 | 2012-02-15 | 甄青松 | Oxygen barrier composite material and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 玻璃纤维增强聚乙烯复合材料力学及摩擦性能的研究;黄金贵等;《复合材料学报》;19971030;第14卷(第4期);19-25 * |
| 黄金贵等.玻璃纤维增强聚乙烯复合材料力学及摩擦性能的研究.《复合材料学报》.1997,第14卷(第4期),19-25. |
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