CN102140204B - Polypropylene composition and preparation method thereof - Google Patents
Polypropylene composition and preparation method thereof Download PDFInfo
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- CN102140204B CN102140204B CN201110113209.5A CN201110113209A CN102140204B CN 102140204 B CN102140204 B CN 102140204B CN 201110113209 A CN201110113209 A CN 201110113209A CN 102140204 B CN102140204 B CN 102140204B
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Abstract
The invention relates to a polypropylene composition, which comprises the following components in percentage by weight: 37.9 to 91.85 percent of polypropylene, 2 to 15 percent of flexibilizer, 5 to 40 percent of rigid particles, 0.05 to 0.1 percent of peroxide crosslinking agent, 1 to 6 percent of crosslinking agent and 0.1 to 1 percent of monomer with multiple functional groups. The polypropylene composition is prepared by the following steps: weighing the polypropylene, flexibilizer, rigid particles, peroxide crosslinking agent, crosslinking agent, monomer with multiple functional groups according to a weight percentage ratio; and premixing in a high-speed mixer, delivering to a double-screw extruder, melting and granulating. The method has the advantages that: the micro crosslinking structure in which the flexibilizer covers the rigid particles is realized, and the flexibility and mechanical performance of the polypropylene material are improved; and 2, an island structure is formed under the shearing and dispersing action of double screws, the impact energy is absorbed effectively to improve the flexibility, a powerful interface enhancing effect improves mechanical strength, and thus, the high flexibility, strength and rigidity of the polypropylene composition are realized.
Description
Technical field
The present invention relates to a kind of polypropene composition, the invention still further relates to a kind of preparation method of polypropene composition.
Background technology
Polypropylene is large commodity polymer material, has good processing characteristics, mechanical property and chemical stability, thereby is widely used.But its shortcoming is, molding shrinkage is large, and especially low temperature notched shock strength is low for notched Izod impact strength, and it is very limited in application.And along with the development of the industries such as aerospace, automobile, household electrical appliances, building, packaging, more and more higher to the requirement of material property, thereby need to carry out modification to it.
Corresponding modification technology comprises modification by copolymerization, blending and modifying and nucleater modified etc.Wherein modification by copolymerization, main by changing the methods such as the catalyzer of polyreaction and reaction conditions, introducing comonomer, synthesize the acrylic resin of better performances, but its improvement effect is not good, and needs very large input.The modification of nucleator technology, normally changes polyacrylic crystal formation, as the introducing of β type nucleator, gives the over-all properties that material is higher, but this method lifting amplitude is limited, and crystalline structure is unstable under heating condition simultaneously.And the relative successful of blending and modifying, by rigid particles strengthen, the physically modified technology of elastic body toughening can improve rigidity, heat-drawn wire or the toughness of material, but due to composition system inner boundary complexity, there is filler and polypropylene, filler and elastomerics or elastomerics and polyacrylic complicated dispersed texture, cause tensile strength, the flexural strength of composition obviously to decline, surface hardness can not get improving.
Chinese patent 200710069061.3 discloses a kind of preparation method of polypropylene mixture alloy, it is prepared component and comprises polypropylene PP, toughner, expanding material, thermo-stabilizer, oxidation inhibitor, photostabilizer, linking agent, crosslinking coagent, its advantage is, after introducing toughner, can increase polyacrylic intensity and improve its ageing-resistant performance, but it is only directly sneaked into toughner in acrylic resin, cannot ensure its homogeneity, thereby reduce its toughening efficiency.
Chinese patent 200810207904.6 discloses a kind of low-luster polypropylene composite material, and its feed composition comprises: polypropylene PP, wollastonite, other mineral fillers, toughner POE, processing aid, oxidation inhibitor.In described polypropylene, adding various fillers reduces the glossiness of material surface and improves its toughness, but its shortcoming is, fail to introduce multiple macromolecule polymeric material, its material surface fails to form firmly flexible interface layer of one, though can further improve the interface bonding of system, but intensity, modulus and toughness cannot balancedly improve, manufacturing process complexity and difficult accurate control.
Summary of the invention
The object of this invention is to provide a kind of polypropene composition, to improve its intensity, rigidity and toughness; Another object of the present invention is to provide a kind of manufacture method of polypropene composition.
Polypropene composition of the present invention, comprises by weight percentage:
Polypropylene 37.9 ~ 91.85%
Toughner 2 ~ 15%
Rigid particles 5 ~ 40%
Peroxide cross-linking agent 0.05 ~ 0.1%
Crosslinking coagent 1 ~ 6%
Polyfunctional monomer 0.1 ~ 1%.
Toughner of the present invention, can be traditional rubber elastomer, comprise terpolymer EP rubber, ethylene-propylene rubber(EPR), ethylene-octene copolymer, vinylbenzene-butylene-styrene segmented copolymer, can be also Low Density Polyethylene, its weight ratio consists of 2 ~ 15%, and preferably 4～10%.
Peroxide cross-linking agent of the present invention, comprise 1,1 '-bis(t-butylperoxy) diisopropyl benzene, dicumyl peroxide, 4,4 '-bis(t-butylperoxy) valeric acid n-butyl, 2,5-bis-(t-butylperoxy) 2,5-dimethyl ethane, its weight percent is 0.05 ~ 1%, preferably 0.1 ~ 0.8%.
Crosslinking coagent of the present invention, comprises styrene monomer or dienite, and the number-average molecular weight of wherein said dienite is between 1400 ~ 5000, and 1,2-vinyl weight content is 60 ~ 90%.The weight percent of crosslinking coagent is 1 ~ 6%.
Polyfunctional monomer of the present invention, for containing multi-functional acrylate monomer, as Viscoat 295, diethylene glycol diacrylate, tripropylene glycol diacrylate.Its weight percent is 0.1 ~ 1%.
In addition, also can include the processing aid that polypropylene is conventional in the present invention, as oxidation inhibitor, lubricant, weather resisting agent, the consumption of these conventional processing aids is conventional amount used, or suitably adjusts according to the requirement of practical situation.
A preparation method for polypropene composition, its step comprises: take in proportion component polypropylene, toughner, rigid particles, peroxide cross-linking agent, crosslinking coagent, polyfunctional monomer; And send into twin screw extruder after high mixer pre-mixing, and melt pelletization.
By the shearing dissemination of engagement type twin screw in the same way, under heat and mechanical force, cause micro-crosslinking reaction of toughner, the active function groups of introducing can effectively increase the consistency to rigid particles, thereby forms encapsulated particle and be dispersed in polypropylene matrix resin.Thereby reach the high-performance polypropylene composition of rigidity-toughness balanced, while preparation method has simple and reliable, the feature that environmental pollution is few.
Polypropene composition of the present invention and preparation method thereof, its advantage is:
1. by introducing peroxide cross-linking agent, crosslinking coagent, polyfunctional monomer, realize micro-crosslinking structure of the coated rigid particles of toughner, this special " the hard core of moccasin " structure is dispersed in polypropylene, toughness and mechanical property that can Reinforced Polypropylene material;
2. be dispersed into island structure by the shearing dissemination of twin screw, thereby both reached the effect of effective apparatus with shock absorbing raising toughness, strong interface reinforced effects can improve physical strength simultaneously, thereby realizes toughness, intensity and the rigidity of polypropene composition excellence.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, and its component proportion is as described in Table 1, also comprises the detection information of physical properties in table 1.
Embodiment mono-
Take by weight percentage component polypropylene, toughner, rigid particles, peroxide cross-linking agent, crosslinking coagent, polyfunctional monomer, and after high mixer pre-mixing, send into melt pelletization after twin screw extruder.
Embodiment bis-
Its component proportion is as described in Table 1, described in all the other and embodiment mono-.
Embodiment tri-
Its component proportion is as described in Table 1, described in all the other and embodiment mono-.
Embodiment tetra-
Its component proportion is as described in Table 1, described in all the other and embodiment mono-.
Comparative example one
Its component proportion is as described in Table 1, described in all the other and embodiment mono-.
Comparative example two
Its component proportion is as described in Table 1, described in all the other and embodiment mono-.
Comparative example three
Its component proportion is as described in Table 1, described in all the other and embodiment mono-.
| Formula | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Polypropylene | 78.9 | 78.9 | 73.8 | 73.8 | 84.8 | 84.7 | 79.7 |
| Ethylene-octene copolymer | 5.0 | 5.0 | 10.0 | ? | 5.0 | 5.0 | 5.0 |
| Terpolymer EP rubber | - | - | - | 10.0 | - | - | - |
| Calcium carbonate | - | 10.0 | - | - | - | - | - |
| Talcum powder | 10.0 | - | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 |
| Superoxide | 0.1 | 0.1 | 0.2 | 0.1 | - | 0.1 | 0.1 |
| Vinylbenzene | 5 | 5 | 5 | - | - | - | 5 |
| Dienite | - | - | - | 5 | - | - | - |
| Polyfunctional monomer | 0.8 | 0.8 | 0.8 | 0.8 | - | - | - |
| Oxidation inhibitor | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Melt flow rate (MFR) | 3.0 | 2.8 | 2.4 | 2.5 | 2.5 | 6.2 | 3.2 |
| Tensile strength | 32.0 | 29.3 | 26.5 | 33.2 | 25.5 | 25.0 | 28 |
| Elongation at break | 85 | 300 | 250 | 80 | 60 | 30 | 40 |
| Socle girder notch shock | 12.0 | 25.0 | 24.2 | 19.2 | 7.8 | 5.5 | 7.5 |
Can be found out by above embodiment and comparative example data, by adding toughner and corresponding rigid particles, can realize micro-crosslinking structure of the coated rigid particles of toughner, and can balanced effectively improve intensity, toughness and the rigidity of polypropylene composite, the method of comparing toughner and inorganic rigid particle simple blend modified polypropene, its mechanical property is more excellent.
Above embodiment, not imposes any restrictions the content of composition of the present invention, and composition as every in it is by weight percentage: 1. polypropylene 72.9, toughner 15, rigid particles 5, peroxide cross-linking agent 0.1, crosslinking coagent 6, polyfunctional monomer 1; 2. polypropylene 37.9, toughner 15, rigid particles 40, peroxide cross-linking agent 0.1, crosslinking coagent 6, polyfunctional monomer 1; 3. polypropylene 91.85, toughner 2, rigid particles 5, peroxide cross-linking agent 0.05, crosslinking coagent 1, polyfunctional monomer 0.1; 4. polypropylene 80, toughner 10, rigid particles 6, peroxide cross-linking agent 0.1, crosslinking coagent 3, polyfunctional monomer 0.9.Every any trickle amendment, equivalent variations and modification of above embodiment being done according to technical spirit of the present invention or composition components or content, all belongs in the scope of technical solution of the present invention.
Claims (4)
1. a polypropene composition, comprises by weight percentage:
Polypropylene 73.8 ~ 91.85%,
Toughner 2 ~ 15%,
Rigid particles 5 ~ 10%,
Peroxide cross-linking agent 0.05 ~ 0.1%,
Crosslinking coagent 1 ~ 6%,
Polyfunctional monomer 0.1 ~ 1%,
In described composition, form micro-crosslinking structure of the coated rigid particles of toughner, and be dispersed in polypropylene;
Described crosslinking coagent is styrene monomer;
Described toughner is terpolymer EP rubber or ethylene-octene copolymer.
2. a kind of polypropene composition according to claim 1, it is characterized in that, described peroxide cross-linking agent, comprise 1,1 '-bis(t-butylperoxy) diisopropyl benzene, dicumyl peroxide, 4,4 '-bis(t-butylperoxy) valeric acid n-butyl or 2,5-bis-(t-butylperoxy) 2,5-dimethyl ethane, its weight percent is 0.05 ~ 0.1%.
3. a kind of polypropene composition according to claim 1, it is characterized in that, described polyfunctional monomer, for containing multi-functional acrylate monomer, comprises Viscoat 295, diethylene glycol diacrylate or tripropylene glycol diacrylate.
4. the preparation method of a kind of polypropene composition claimed in claim 1, its step comprises, takes by weight percentage component polypropylene, toughner, rigid particles, peroxide cross-linking agent, crosslinking coagent, polyfunctional monomer; And send into twin screw extruder after high mixer pre-mixing, and melt pelletization.
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| CN201110113209.5A CN102140204B (en) | 2011-05-04 | 2011-05-04 | Polypropylene composition and preparation method thereof |
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| CN102140204B true CN102140204B (en) | 2014-06-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102516655B (en) * | 2011-11-29 | 2014-03-26 | 金发科技股份有限公司 | Strengthening and toughening polypropylene composite and preparation method thereof |
| CN104403201A (en) * | 2014-12-15 | 2015-03-11 | 苏州宽温电子科技有限公司 | Vehicle roof material and preparation method thereof |
| CN104403202B (en) * | 2014-12-15 | 2016-11-23 | 俞文文 | A kind of fire-retardant car roof material and preparation method thereof |
| CN105255009A (en) * | 2015-11-10 | 2016-01-20 | 沈阳化工大学 | Method for preparing reinforcing and toughening recycled PP plastic through mico-crosslinking method |
| KR102631758B1 (en) * | 2016-12-16 | 2024-02-01 | 다이니폰 인사츠 가부시키가이샤 | Adhesive films and batteries for metal terminals |
| CN110581021A (en) * | 2019-09-06 | 2019-12-17 | 安徽赛福电子有限公司 | Metallized film for film capacitor |
| CN114181452B (en) * | 2021-10-29 | 2023-10-31 | 金发科技股份有限公司 | Polypropylene composition and preparation method and application thereof |
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| CN1556138A (en) * | 2004-01-07 | 2004-12-22 | 南京聚隆化学实业有限责任公司 | Dynamic polypropylene sulfide composite material and its preparation method |
| CN1798775A (en) * | 2003-05-30 | 2006-07-05 | 索尔维聚合体工程有限公司 | Co-agents for the preparation of thermoplastic elastomeric blends of rubber and polyolefins |
| CN101070417A (en) * | 2007-06-21 | 2007-11-14 | 杨育农 | Polypropylene composite material |
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| CN1798775A (en) * | 2003-05-30 | 2006-07-05 | 索尔维聚合体工程有限公司 | Co-agents for the preparation of thermoplastic elastomeric blends of rubber and polyolefins |
| CN1556138A (en) * | 2004-01-07 | 2004-12-22 | 南京聚隆化学实业有限责任公司 | Dynamic polypropylene sulfide composite material and its preparation method |
| CN101070417A (en) * | 2007-06-21 | 2007-11-14 | 杨育农 | Polypropylene composite material |
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Effective date of registration: 20160129 Address after: Ke Feng Lu Science City high tech Industrial Development Zone of Guangzhou City, Guangdong Province, No. 33 510520 Patentee after: Kingfa Technology Co., Ltd. Patentee after: Shanghai Kingfa Science and Technology Development Co., Ltd. Patentee after: SICHUAN KINGFA TECHNOLOGY DEVELOPMENT CO., LTD. Address before: Ke Feng Lu Science City high tech Industrial Development Zone of Guangzhou City, Guangdong Province, No. 33 510520 Patentee before: Kingfa Technology Co., Ltd. Patentee before: Shanghai Kingfa Science and Technology Development Co., Ltd. Patentee before: Mianyang Dongfang Special Engineering Plastic Co., Ltd. |