CN1064383C - Preparation of lightly crosslinking-bulked PS/PE mixture - Google Patents
Preparation of lightly crosslinking-bulked PS/PE mixture Download PDFInfo
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- CN1064383C CN1064383C CN 97105383 CN97105383A CN1064383C CN 1064383 C CN1064383 C CN 1064383C CN 97105383 CN97105383 CN 97105383 CN 97105383 A CN97105383 A CN 97105383A CN 1064383 C CN1064383 C CN 1064383C
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Abstract
The present invention relates to compatibilizing technology for an incompatible polymer mixture, more specifically to a preparation method of a light cross-linking compatibilizing polystyrene (PS) / polyethylene (PE) mixture. Styrene-butadiene-styrene block copolymer (SBS) is used as compatibilizer, and a small amount of benzoyl peroxide (BPO) or dicumyl peroxide (DCP) is used as a cross-linking agent. The compatibilize comprises the following components (parts by weight): 10 to 20 parts of polyethylene (PE), 5 to 15 parts of the styrene-butadiene-styrene block copolymer (SBS) and 0.01 to 1 part of a small amount of peroxide cross-linking agents are added into the compatibilizer and the cross-linking agents step by step. The mixture is respectively blended for 2 to 10 minutes at the temperature of 150 DEG C to 250 DEG C. Compared with the prior art, the properties of the mixture prepared by the method are conspicuously improved; the mixture can replace HIPS, conspicuously reduces manufacturing cost, and is favorable for the industrial production of a PS/PE alloy. All raw materials are domestically produced.
Description
The present invention relates to the capacity increasing technique of incompatible polymer blend, refer to the preparation method of a kind of lightly crosslinked bulk filling polystyrene (PS)/polyethylene (PE) blend particularly.
Exploitation polystyrene (PS)/polyethylene (PE) alloy technology key is to adopt suitable compatibilized technology that it is carried out effective increase-volume.But, add peroxide reactions and extrude both at home and abroad to regard to the employed compatibilizing method of this co-mixing system with regard at present, method is simple, but owing to be difficult to make PE, PS internal crosslinking and chain degradation to reach minimum top condition, very limited to the raising of blend performance; Employing has the polymer reaction increase-volume of functional group, though need not to use expanding material, but have the at first synthetic of functional polymer owing to relate to, and the sluggish in the course of processing between functional group, not only cause higher manufacturing cost, and to the improvement of blend performance, effect is also undesirable; Add grafting or segmented copolymer increase-volume,, be difficult to improve the erosion-resisting characteristics of blend though can obtain tensile property alloy material preferably, and the costing an arm and a leg of employed expanding material.
The objective of the invention is to overcome the deficiencies in the prior art part, select the expanding material of certain molecular structure for use and be equipped with micro-superoxide, in the interfacial adhesion that improves blend, introduce the interface elastic layer, thereby a kind of preparation method of lightly crosslinked bulk filling polystyrene (PS)/polyethylene (PE) blend of cheap for manufacturing cost, the product comprehensive mechanical property excellence that obtains is provided.
The objective of the invention is to reach by following measure:
The preparation method of a kind of lightly crosslinked bulk filling polystyrene (PS)/polyethylene (PE) blend,---divinyl---styrene block copolymer (SBS) is an expanding material to it is characterized in that selecting for use vinylbenzene, selecting micro-benzoyl peroxide (BPO) or dicumyl peroxide (DCP) for use is linking agent, substep adds by polystyrene (PS)/polyethylene (PE) blend weight part, 10～20 parts polyethylene (PE), 70～85 parts polystyrene (PS), the micro-peroxide cross-linking agent of 5～15 parts of vinylbenzene of using as expanding material---divinyl---styrene block copolymers (SBS) and 0.01～1 part, under 150 ℃～250 ℃, blend is each 2～10 minutes respectively.
The preparation method that above-mentioned component adds step by step also has:
The preparation method 1: press formula ratio, polyethylene (PE), micro-peroxide cross-linking agent benzoyl peroxide (BPO) or dicumyl peroxide (DCP) and polystyrene (PS) 150 ℃～250 ℃ following blend 2～10 minutes, are being kept adding expanding material vinylbenzene---divinyl---styrene block copolymer (SBS) blend 2～10 minutes under the said temperature then.
The preparation method 2: press formula ratio, with polyethylene (PE) and micro-peroxide cross-linking agent benzoyl peroxide (BPO) or dicumyl peroxide (DCP) 150 ℃～250 ℃ following blend 2～10 minutes, keeping adding expanding material vinylbenzene---divinyl---styrene block copolymer (SBS) blend 2～10 minutes under the said temperature then, keeping adding under the said temperature polystyrene (PS) blend 2～10 minutes more at last.
The preparation method 3: press formula ratio, at first with polyethylene (PE) and micro-peroxide cross-linking agent benzoyl peroxide (BPO) or dicumyl peroxide (DCP) 150 ℃～250 ℃ following blend 2～10 minutes, add polystyrene (PS) then, keeping thorough mixing under the said temperature,---divinyl---vinylbenzene (SBS) that adds expanding material vinylbenzene at last was 150 ℃～250 ℃ following blend 2～10 minutes.
The preparation method 4: press formula ratio, polyethylene (PE) and micro-peroxide cross-linking agent benzoyl peroxide (BPO) or dicumyl peroxide (DCP) 150 ℃～250 ℃ following blend 2～10 minutes, are being kept adding under the said temperature state polystyrene (PS) and expanding material vinylbenzene---divinyl---styrene block copolymer (SBS) blend 2～10 minutes then.
The purpose that the each component that the present invention adopts adds step by step is: make between PE and the PS, and between PE and the SBS, between PS and the SBS crosslinking reaction takes place, so not only make SBS become the effective expanding material of this co-mixing system, and the graft blends of the crosslinking reaction between PE and the PS, generation also can play the effect of increase-volume.Because the present invention adopts the superoxide of trace,, still kept the two keys of part simultaneously, played the effect of elastic layer at the interface though between SBS and PE and the PS crosslinking reaction has taken place.When being subjected to external force, sample does the time spent.The interface elastic layer both can play the absorption energy, can play again and slow down the stress transfer rate, postpone the effect of PE particle deformation rate, thereby make the PE particle that lax distortion take place in the high speed impact test process fully, and then significantly improve the shock resistance of PS/PE blend.
The present invention compared with prior art has following remarkable advantage:
1, this law selects for use SBS to be equipped with the superoxide of trace, and prepared blend performance is significantly improved, and compares tensile strength σ with the blend of prior art for preparing
sImproved 40～100%, shock strength I
sImproved 1200～2000% and fracture extension rate ε
sImproved 750～1500%.Realized that people over nearly 30 years attempt to utilize the imagination of the toughness reinforcing PS of PE.
2, adopt manufacturing cost of the present invention significantly to descend, compare with the blend of prior art for preparing, its manufacturing cost has reduced by 70～120%.
3, the starting material that adopted, the source is abundant, all domesticizes, and helps the suitability for industrialized production of PS/PE alloy, has remarkable social benefit and economic benefit.
4, every performance index of the prepared PS/PE alloy of the present invention have have all met or exceeded the HIPS of the corresponding trade mark, so the not only alternative HIPS of this alloy material uses, simultaneously at wrapping material, contain aspects such as the high food product containers of oil quantity, freezing plant and foam material and have a good application prospect.
With the following Examples preparation method of the present invention is described in further detail:
Embodiment 1
10 parts of linear low density polyethylenes (LLDPE) or new LDPE (film grade) (LDPE), 1 part of dicumyl peroxide (DCP) or benzoyl peroxide (BPO) and 79 parts of polystyrene (PS) are 180 ℃ of following blend after 5 minutes, add 10 parts of vinylbenzene---divinyl---styrene block copolymer SBS remix 5 minutes, and adopted the shock strength of LLDPE, LDPE gained blend to be respectively: 108.4J/M and 94.4J/M.
Embodiment 2
10 parts of linear low density polyethylenes (LLDPE) or new LDPE (film grade) (LDPE) and 0.5 part of dicumyl peroxide (DCP) or benzoyl peroxide (BPO) were 200 ℃ of following blend 7 minutes, add 10 parts of vinylbenzene---divinyl---styrene block copolymer SBS blend 2 minutes, add 79.5 parts of polystyrene PS remix at last 5 minutes, and adopted the shock strength of LLDPE, LDPE gained blend to be respectively: 114.6J/M and 102.5J/M.
Embodiment 3
20 parts of linear low density polyethylenes (LLDPE) or new LDPE (film grade) (LDPE) and 0.1 part of dicumyl peroxide (DCP) or benzoyl peroxide (BPO) were 175 ℃ of following blend 8 minutes, added 70 parts of polystyrene PS remix then 5 minutes, and added 10 parts of vinylbenzene---divinyl---styrene block copolymer SBS mixing at last and adopted the shock strength of LLDPE, LDPE gained blend to be respectively in 5 minutes: 110.2J/M and 100J/M.
Embodiment 4
15 parts of linear low density polyethylene LLDPE or new LDPE (film grade) LPPE and 0.03 part of dicumyl peroxide (DCP) or benzoyl peroxide (BPO) were 165 ℃ of following blend 2 minutes, add 70 parts of polystyrene (PS) and 15 parts of vinylbenzene---divinyl---styrene block copolymer SBS remix then 10 minutes, and adopted the shock strength of LLDPE, LDPE gained blend to be respectively: 123.2J/M and 114.6J/Mm.
Claims (5)
1; a kind of preparation method of lightly crosslinked bulk filling polystyrene/polyethylene blend;---divinyl---styrene block copolymer is an expanding material to it is characterized in that selecting for use vinylbenzene; trace benzoyl peroxide or dicumyl peroxide are linking agent; substep adds by polystyrene/polyethylene blend weight part; 10～20 parts polyethylene; 70～85 parts polystyrene; the micro-peroxide cross-linking agent of 5～15 parts of vinylbenzene of using as expanding material---divinyl---styrene block copolymers and 0.01～1 part is under 150 ℃～250 ℃, and blend is each 2～10 minutes respectively.
2, the preparation method of a kind of lightly crosslinked bulk filling polystyrene/polyethylene blend according to claim 1; it is characterized in that it adds the method for each component step by step; press formula ratio in addition; polyethylene, micro-peroxide cross-linking agent benzoyl peroxide or dicumyl peroxide and polystyrene 150 ℃～250 ℃ following blend 2～10 minutes, are being kept adding expanding material vinylbenzene---divinyl---styrene block copolymer blend 2～10 minutes under the said temperature then.
3, the preparation method of a kind of lightly crosslinked bulk filling polystyrene/polyethylene blend according to claim 1; it is characterized in that it adds the method for each component step by step; press formula ratio in addition; with polyethylene and micro-superoxide benzoyl peroxide or dicumyl peroxide 150 ℃～250 ℃ following blend 2～10 minutes; keeping adding expanding material vinylbenzene---fourth hexichol---styrene block copolymer blend 2～10 minutes under the said temperature then, keeping adding under the said temperature polystyrene blend 2～10 minutes more at last.
4, the preparation method of a kind of lightly crosslinked bulk filling polystyrene/polyethylene blend according to claim 1; it is characterized in that it adds the method for each component step by step; also have by dosage at first polyethylene and micro-peroxide cross-linking agent benzoyl peroxide or dicumyl peroxide 150 ℃～250 ℃ following blend 2～10 minutes; add polystyrene then; keeping thorough mixing under the said temperature,---fourth hexichol---styrene block copolymer that adds expanding material vinylbenzene at last was 150 ℃～250 ℃ following blend 2～10 minutes.
5, the preparation method of a kind of lightly crosslinked bulk filling polystyrene/polyethylene blend according to claim 1; it is characterized in that it adds the method for each component step by step; also have by dosage at first polyethylene and micro-peroxide cross-linking agent benzoyl peroxide or dicumyl peroxide 150 ℃～250 ℃ following blend 2～10 minutes, keeping under the said temperature state polystyrene and the blend of expanding material vinylbenzene---divinyl---styrene block copolymer 2～10 minutes then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97105383 CN1064383C (en) | 1997-07-15 | 1997-07-15 | Preparation of lightly crosslinking-bulked PS/PE mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97105383 CN1064383C (en) | 1997-07-15 | 1997-07-15 | Preparation of lightly crosslinking-bulked PS/PE mixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1197815A CN1197815A (en) | 1998-11-04 |
| CN1064383C true CN1064383C (en) | 2001-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 97105383 Expired - Fee Related CN1064383C (en) | 1997-07-15 | 1997-07-15 | Preparation of lightly crosslinking-bulked PS/PE mixture |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001019917A1 (en) * | 1999-09-17 | 2001-03-22 | The University Of Akron | A self-reinforced rubber matrix having high glass transition temperature thermoset domains |
| CN1094136C (en) * | 2000-07-07 | 2002-11-13 | 清华大学 | Preparation of SBS-modified superhigh molecular weight composite polyethylene material |
| CN100465219C (en) * | 2006-12-04 | 2009-03-04 | 广州市鹿山化工材料有限公司 | Cross-linked polyethylene composition powder and its prepn |
| CN102643484B (en) * | 2012-04-25 | 2013-10-23 | 金发科技股份有限公司 | In-situ compatibilization polyolefin/polystyrene alloy and preparation method and application thereof |
| CN103319834B (en) * | 2013-07-08 | 2015-07-15 | 合肥美的电冰箱有限公司 | Mouth frame of refrigeration device and manufacturing method of mouth frame |
| CN103374170B (en) * | 2013-07-24 | 2015-08-26 | 陈忱 | A kind of organic filler fills air-permeable envelope and preparation method thereof |
| CN106512756B (en) * | 2015-09-09 | 2019-04-05 | 杭州埃尔环保科技有限公司 | A kind of manufacturing method of half homogeneous phase cation exchange film |
| CN106512761B (en) * | 2015-09-09 | 2019-04-09 | 杭州埃尔环保科技有限公司 | A kind of manufacturing method of half homogeneous-phase anion exchange film |
| CN107141627A (en) * | 2017-05-31 | 2017-09-08 | 三斯达（江苏）环保科技有限公司 | A kind of expanded material for tables and chairs of being played for children and preparation method thereof |
| CN108299752A (en) * | 2017-06-15 | 2018-07-20 | 广东圆融新材料有限公司 | A kind of halogen-free flameproof PE/PS alloy materials and preparation method thereof |
| CN107841059A (en) * | 2017-11-21 | 2018-03-27 | 黄风山 | PS, PE blending toughening formula |
| CN112250958A (en) * | 2020-10-15 | 2021-01-22 | 江苏中信国安新材料有限公司 | Polystyrene composite material and preparation method and application thereof |
| CN112143120A (en) * | 2020-10-15 | 2020-12-29 | 江苏中信国安新材料有限公司 | Heat-conducting polystyrene composite material and preparation method and application thereof |
| CN115352156B (en) * | 2022-09-02 | 2023-05-12 | 上海紫华薄膜科技有限公司 | Low-gram-weight high-strength casting film and preparation method thereof |
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1997
- 1997-07-15 CN CN 97105383 patent/CN1064383C/en not_active Expired - Fee Related
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| CN1197815A (en) | 1998-11-04 |
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