CN102731910B - Non-elastomer/polypropylene blended composite material - Google Patents
Non-elastomer/polypropylene blended composite material Download PDFInfo
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- CN102731910B CN102731910B CN201210237735.7A CN201210237735A CN102731910B CN 102731910 B CN102731910 B CN 102731910B CN 201210237735 A CN201210237735 A CN 201210237735A CN 102731910 B CN102731910 B CN 102731910B
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- uhmwpe
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- hdpe6098
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Abstract
The invention discloses a non-elastomer/polypropylene blended composite material. The composite material is obtained by taking a polypropylene homopolymer as a matrix material and polyethylene and/or ethylene-propylene copolymers as non-elastomers to carry out mechanical blending modification after adding an antioxidant, wherein the mass ratio of the matrix material to the non-elastomers is (70-90):(30-10); and the additive amount of the antioxidant is 0.5-1.5% of the total mass of the matrix material and the non-elastomers. The blended composite material is obtained by carrying out extruding granulation on the raw materials after mixing the raw materials and then carrying out injection molding. The tensile strength of the blended composite material is not less than 20MPa and the impact strength is not less than 30kJ/m<2>.
Description
One, technical field
The present invention relates to a kind of polymer composite, specifically a kind of inelastic body/polypropylene blending composite material.
Two, background technology
Polypropylene (PP) has developed extremely rapid since nineteen fifty-seven industrialization, is a kind of application general-purpose plastics very widely.The premium propertiess such as polypropylene has that transparency is high, nontoxicity, light specific gravity, easily processing, excellent in cushion effect, resistance to chemical attack, resistance to flexing is good, electrical insulating property is good.Polypropylene is most of for injection molding, and is easy to carry out modification by technological measures such as blend, copolymerization, filling, enhancings, also can produce film, sheet material, tubing, monofilament etc. with extruding with the method for forming such as blowing.Except daily necessities, also process industry uses product as fields such as building, mechanical part, electronic parts, fiber, coating.In synthetic resins, its capacity and output is only second to polyethylene (PE) and polyvinyl chloride (PVC) resin, occupies the 3rd, occupies very consequence.
Although polypropylene has many good qualities, still have many weak points as structured material: when poor toughness, wear resistance deficiency, low temperature, fragility is larger etc.Compared with traditional engineering plastics, also there are some defects in polypropylene, as poor in weathering resistance, fast light, heat and resistance to deterioration are poor, hydrophilic and antistatic property is poor, the suitability for secondary processing such as cover with paint, lacquer, colour wash, etc., painted and bonding poor, poor with the consistency of other polar polymers and mineral filler.These shortcomings make further to expand its Application Areas and are very restricted.In order to improve polyacrylic performance, extend its work-ing life broadened application scope, need carry out modification to polypropylene.So polyacrylic high performance, through engineering approaches, functionalization are the mains direction of studying of current modified polypropene.
At present about using various properties-correcting agent tenacity-increased profaxes to prepare the existing many reports of method of matrix material.The people such as Zhou Yuling adopt scanning electron microscope and transmission electron microscope to study the toughening effect of the organic polymer such as PMMA, SAN to PP/CPE co-mixing system, they think adding of organic rigid polymkeric substance, promote on the one hand the formation of network structure and perfect, make on the other hand sample produce cold drawn deformation, particulate is because of a large amount of energy of the surrender absorption of matrix generation around, and these two kinds of factor actings in conjunction improve the toughness of material.But CPE can deviate from hydrogenchloride in the time being heated or while sulfuration, and the further dechlorination reaction of catalysis CPE of HCL, the stability of material under high temperature or particular surroundings just reduces greatly like this.Elastic body toughening exists some defect that are difficult to overcome, and for example, when shock strength, elongation at break and the work of rupture of material increases, rigidity, use temperature and processing characteristics but significantly reduce.Toughening By Non-elastomers, as a kind of new method for toughening, likely becomes the new way of preparing high-intensity high-tenacity engineering plastics.
Three, summary of the invention
The present invention aims to provide a kind of inelastic body/polypropylene blending composite material, and technical problem to be solved is to improve the mechanical property of polypropylene material.
Inelastic body/polypropylene blending composite material of the present invention, is characterized in that: take homopolymer polypropylene as body material, take polyethylene and/or ethylene propylene copolymer as inelastic body, add the matrix material that mechanical blending modification obtains after oxidation inhibitor;
The mass ratio of body material and inelastic body is 70-90:30-10;
Oxidation inhibitor addition is the 0.5-1.5% of body material and inelastic body total mass.
Described oxidation inhibitor is selected from oxidation inhibitor-1010 and/or oxidation inhibitor-168, if ratio is any when multiple.
Molecular weight >=1,500,000 of described inelastic body.
The melting index of described body material is GB/T3682-2000 in 0.8-1.4g/10min(testing standard).
Described inelastic body at least contains a kind of ethylene propylene copolymer, as the expanding material of matrix material.
The preparation method of blended compound material of the present invention is as follows:
First homopolymer polypropylene and part inelastic body are mixed, obtain pellet a by twin screw extruder mixing granulator, then the inelastic body of pellet a and surplus is mixed, again obtain pellet b by twin screw extruder mixing granulator; Pellet b injection moulding is obtained to blended compound material.
What while preparing pellet a, add is part inelastic body, and described part inelastic body refers to the 1/4-1/2 of inelastic body total amount, can within the scope of this.
It is main body that the present invention selects polypropylene homo body, adds polyethylene and/or the ethylene propylene copolymer inelastic body of different molecular weight (molecular weight>=1,500,000), prepares tensile strength>=20MPa, shock strength>=30KJ/m by twin screw blending extrusion
2universal polymer matrix composites.Tensile strength of material or performance are pressed GB/T1040.2-2006 standard testing, and material impact intensity is pressed GB/T1843-2008 standard testing.
The selected PP1330 inelastic body of the present invention has played the effect of expanding material simultaneously, and can make has good interface cohesive force between other additives and matrix, and stress is more easily transmitted by interface.In addition, the selected various material cost of the present invention are relatively inexpensive, and preparation method is simple to operation, and the matrix material machinery performance of production, erosion resistance are all good.
Four, embodiment
Below by each embodiment, the present invention will be further described.
Main raw material:
Homopolymer polypropylene: Beijing Yanshan Petrochemical Company face south chemical plant produce polypropylene 1300(PP1300).
Polyethylene: the polyethylene 7006(HDPE7006 that Shandong Qilu Petrochemical Company produces);
The polyethylene 7042(HDPE7042 that Shandong Qilu Petrochemical Company produces);
The polyethylene 6098(HDPE6098 that Shandong Qilu Petrochemical Company produces);
The ultrahigh molecular weight polyethylene(UHMWPE) (UHMWPE) of Beijing auxiliary agent plant produced, molecular weight 2,980,000.
Ethylene propylene copolymer: Beijing Yanshan Petrochemical Company face south chemical plant produce ethylene propylene copolymer 1330(PP1330).
Embodiment 1:
The UHMWPE of PP1330,750g and the PP1300 of 3500g that take respectively 750g add the each 25g in oxidation inhibitor-1010 and oxidation inhibitor-168 simultaneously.By each raw material dry 2-3h at 80-90 ℃, PP1300, part PP1330 and part UHMWPE mixing are obtained to pellet a with twin screw extruder mixing granulator, then pellet a is mixed with the PP1330 of surplus and the UHMWPE of surplus again with obtaining pellet b with twin screw extruder mixing granulator; Pellet b injection moulding is obtained to blended compound material.It is 21.61MPa that reference standard GB/T1040.2-2006 tests its tensile strength, and it is 34.47KJ/m that reference standard GB/T1843-2008 tests its shock strength
2.
Embodiment 2:
The UHMWPE of HDPE6098,500g and the PP1300 of 4000g that take respectively PP1330, the 250g of 250g add the each 25g in oxidation inhibitor-1010 and oxidation inhibitor-168 simultaneously.By raw material dry 2-3h at 80-90 ℃, PP1300, part PP1330, part HDPE6098 and part UHMWPE are mixed and obtain pellet a with twin screw extruder mixing granulator, then PP1330, the HDPE6098 of surplus of pellet a and surplus and the UHMWPE of surplus are mixed and obtain pellet b with twin screw extruder mixing granulator; Pellet b injection moulding is obtained to blended compound material.It is 21.42MPa that reference standard GB/T1040.2-2006 tests its tensile strength, and it is 32.18KJ/m that reference standard GB/T1843-2008 tests its shock strength
2.
Embodiment 3:
The UHMWPE of HDPE6098,650g and the PP1300 of 3800g that take respectively PP1330, the 250g of 300g add the each 25g in oxidation inhibitor-1010 and oxidation inhibitor-168 simultaneously.By raw material dry 2-3h at 80-90 ℃, PP1300, part PP1330, part HDPE6098 and part UHMWPE are mixed and obtain pellet a with twin screw extruder mixing granulator, then PP1330, the HDPE6098 of surplus of pellet a and surplus and the UHMWPE of surplus are mixed and obtain pellet b with twin screw extruder mixing granulator; Pellet b injection moulding is obtained to blended compound material.It is 23.53MPa that reference standard GB/T1040.2-2006 tests its tensile strength, and it is 33.16KJ/m that reference standard GB/T1843-2008 tests its shock strength
2.
Embodiment 4:
The UHMWPE of HDPE6098,1000g and the PP1300 of 3500g that take respectively PP1330, the 250g of 250g add the each 25g in oxidation inhibitor-1010 and oxidation inhibitor-168 simultaneously.By raw material dry 2-3h at 80-90 ℃, PP1300, part PP1330, part HDPE6098 and part UHMWPE are mixed and obtain pellet a with twin screw extruder mixing granulator, then PP1330, the HDPE6098 of surplus of pellet a and surplus and the UHMWPE of surplus are mixed and obtain pellet b with twin screw extruder mixing granulator; Pellet b injection moulding is obtained to blended compound material.It is 28.67MPa that reference standard GB/T1040.2-2006 tests its tensile strength, and it is 50.12KJ/m that reference standard GB/T1843-2008 tests its shock strength
2.
Comparative example 1:
The UHMWPE of HDPE6098,500g and the PP1300 of 3000g that take respectively PP1330, the 500g of 1000g add the each 25g in oxidation inhibitor-1010 and oxidation inhibitor-168 simultaneously.By raw material dry 2-3h at 80-90 ℃, PP1300, part PP1330, part HDPE6098 and part UHMWPE are mixed and obtain pellet a with twin screw extruder mixing granulator, then PP1330, the HDPE6098 of surplus of pellet a and surplus and the UHMWPE of surplus are mixed and obtain pellet b with twin screw extruder mixing granulator; Pellet b injection moulding is obtained to blended compound material.It is 27.29MPa that reference standard GB/T1040.2-2006 tests its tensile strength, and it is 10.39KJ/m that reference standard GB/T1843-2008 tests its shock strength
2.
Comparative example 2:
The UHMWPE of HDPE6098,750g and the PP1300 of 2000g that take respectively PP1330, the 750g of 1500g add the each 25g in oxidation inhibitor-1010 and oxidation inhibitor-168 simultaneously.By raw material dry 2-3h at 80-90 ℃, PP1300, part PP1330, part HDPE6098 and part UHMWPE are mixed and obtain pellet a with twin screw extruder mixing granulator, then PP1330, the HDPE6098 of surplus of pellet a and surplus and the UHMWPE of surplus are mixed and obtain pellet b with twin screw extruder mixing granulator; Pellet b injection moulding is obtained to blended compound material.It is 24.18MPa that reference standard GB/T1040.2-2006 tests its tensile strength, and it is 17.92KJ/m that reference standard GB/T1843-2008 tests its shock strength
2.
It is sample segment the performance test results prepared by raw material than PP1300, PP1330 and U HMWPE that table 1 adopts different mass
As can be seen from Table 1: in the time fixing the addition of UHMWPE, the increase of PP1300 addition is conducive to the raising of shock strength, but can reduce to a certain extent tensile strength; The impact of PP1330 is just contrary.
It is sample segment the performance test results prepared by raw material than PP1300, PP1330, HDPE6098 and UHMWPE that table 2 adopts different mass
As can be seen from Table 2: be greater than 2.5% when increasing HDPE6098() and the addition of PP1330, while reducing the addition of PP1300, not very large on the impact of tensile strength, but can cause reducing of shock strength.
Claims (4)
1. an inelastic body/polypropylene blending composite material, it is characterized in that: be take 3500g homopolymer polypropylene PP1300 as body material, with 250g PP1330, 250g HDPE6098 and 1000g UHMWPE are inelastic body, add the each 25g in oxidation inhibitor-1010 and oxidation inhibitor-168 simultaneously, by each raw material dry 2-3h at 80-90 ℃, by PP1300, part PP1330, part HDPE6098 and part UHMWPE mixing obtain pellet a with twin screw extruder mixing granulator, then by the PP1330 of pellet a and surplus, the HDPE6098 of surplus and the UHMWPE of surplus mixing obtain pellet b with twin screw extruder mixing granulator again, by the blended compound material obtaining after pellet b injection moulding, the melting index of described body material is at 0.8-1.4g/10min.
2. an inelastic body/polypropylene blending composite material, it is characterized in that: be take 4000g homopolymer polypropylene PP1300 as body material, with 250g PP1330, 250g HDPE6098 and 500g UHMWPE are inelastic body, add the each 25g in oxidation inhibitor-1010 and oxidation inhibitor-168 simultaneously, by each raw material dry 2-3h at 80-90 ℃, by PP1300, part PP1330, part HDPE6098 and part UHMWPE mixing obtain pellet a with twin screw extruder mixing granulator, then by the PP1330 of pellet a and surplus, the HDPE6098 of surplus and the UHMWPE of surplus mixing obtain pellet b with twin screw extruder mixing granulator again, by the blended compound material obtaining after pellet b injection moulding, the melting index of described body material is at 0.8-1.4g/10min.
3. an inelastic body/polypropylene blending composite material, it is characterized in that: be take 3800g homopolymer polypropylene PP1300 as body material, with 300g PP1330, 250g HDPE6098 and 650g UHMWPE are inelastic body, add the each 25g in oxidation inhibitor-1010 and oxidation inhibitor-168 simultaneously, by each raw material dry 2-3h at 80-90 ℃, by PP1300, part PP1330, part HDPE6098 and part UHMWPE mixing obtain pellet a with twin screw extruder mixing granulator, then by the PP1330 of pellet a and surplus, the HDPE6098 of surplus and the UHMWPE of surplus mixing obtain pellet b with twin screw extruder mixing granulator again, by the blended compound material obtaining after pellet b injection moulding, the melting index of described body material is at 0.8-1.4g/10min.
4. an inelastic body/polypropylene blending composite material, it is characterized in that: be take 3500g homopolymer polypropylene PP1300 as body material, take 750g PP1330 and 750g UHMWPE as inelastic body, add the each 25g in oxidation inhibitor-1010 and oxidation inhibitor-168 simultaneously, by each raw material dry 2-3h at 80-90 ℃, by PP1300, part PP1330 and part UHMWPE mixing obtain pellet a with twin screw extruder mixing granulator, then pellet a is mixed with the PP1330 of surplus and the UHMWPE of surplus again with obtaining pellet b with twin screw extruder mixing granulator, by the blended compound material obtaining after pellet b injection moulding, the melting index of described body material is at 0.8-1.4g/10min.
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CN107383596A (en) * | 2017-07-18 | 2017-11-24 | 合肥华凌股份有限公司 | Hollow sheeting master batch, hollow sheeting and refrigerator |
CN112679848A (en) * | 2020-12-23 | 2021-04-20 | 安徽杰蓝特新材料有限公司 | High-modulus impact-resistant non-elastomer ternary blending composite pipe and processing technology thereof |
CN112809957A (en) * | 2020-12-23 | 2021-05-18 | 安徽杰蓝特新材料有限公司 | High-performance non-elastomer ternary blending composite material and preparation method thereof |
CN112873928A (en) * | 2020-12-25 | 2021-06-01 | 安徽杰蓝特新材料有限公司 | Multi-cavity structure hollow wall winding pipe and preparation method thereof |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1127272A (en) * | 1995-10-05 | 1996-07-24 | 中国石化茂名石油化工公司 | Polypropylene toughness-increasing modified material and preparing method |
CN101429309A (en) * | 2008-10-29 | 2009-05-13 | 上海赛科石油化工有限责任公司 | Impact resistant polypropylene composition and process for producing the same |
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CN1127272A (en) * | 1995-10-05 | 1996-07-24 | 中国石化茂名石油化工公司 | Polypropylene toughness-increasing modified material and preparing method |
CN101429309A (en) * | 2008-10-29 | 2009-05-13 | 上海赛科石油化工有限责任公司 | Impact resistant polypropylene composition and process for producing the same |
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