CN102731881B - For cross-linked polyolefin composition for rotational molding and preparation method thereof - Google Patents
For cross-linked polyolefin composition for rotational molding and preparation method thereof Download PDFInfo
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- CN102731881B CN102731881B CN201210089752.0A CN201210089752A CN102731881B CN 102731881 B CN102731881 B CN 102731881B CN 201210089752 A CN201210089752 A CN 201210089752A CN 102731881 B CN102731881 B CN 102731881B
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- 238000001175 rotational moulding Methods 0.000 title claims abstract description 37
- 239000000203 mixture Substances 0.000 title claims abstract description 22
- 229920000098 polyolefin Polymers 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 29
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 29
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 8
- 239000000314 lubricant Substances 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims description 18
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 10
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical group C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000010348 incorporation Methods 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 229910052791 calcium Inorganic materials 0.000 claims 1
- 239000011575 calcium Substances 0.000 claims 1
- 239000012467 final product Substances 0.000 claims 1
- 229940116364 hard fat Drugs 0.000 claims 1
- 238000004132 cross linking Methods 0.000 abstract description 8
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000011347 resin Substances 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229920003020 cross-linked polyethylene Polymers 0.000 description 4
- 239000004703 cross-linked polyethylene Substances 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229920001684 low density polyethylene Polymers 0.000 description 3
- 239000004702 low-density polyethylene Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- YEECOJZAMZEUBB-UHFFFAOYSA-N 2,2,3,3,6,6,7,7-octamethyloctane Chemical compound CC(C)(C)C(C)(C)CCC(C)(C)C(C)(C)C YEECOJZAMZEUBB-UHFFFAOYSA-N 0.000 description 2
- 230000003487 anti-permeability effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical group [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 2
- 239000008116 calcium stearate Substances 0.000 description 2
- 235000013539 calcium stearate Nutrition 0.000 description 2
- NNBZCPXTIHJBJL-UHFFFAOYSA-N decalin Chemical compound C1CCCC2CCCCC21 NNBZCPXTIHJBJL-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 150000002978 peroxides Chemical group 0.000 description 1
- 238000002464 physical blending Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The present invention relates to a kind of for cross-linked polyolefin composition for rotational molding and preparation method thereof, belong to field of cross-linked polyolefin composition for rotational molding.It is characterized in that comprising two kinds of components of A, B, A kind component and B component to be formed wherein component A by the raw material of following mass fraction and include: linear low density polyethylene (LLDPE) 100 parts；High density polyethylene (HDPE) (HDPE) 50～100 parts；Cross-linking agent 2～5 parts；Nucleator 0.2～1.0 parts；Lubricant 0.2～1.0 parts；B component is that described in high density polyethylene (HDPE), in cross-linked polyolefin composition for rotational molding, the ratio of component A and B component is 90: 10～95: 5.By base resin selecting to reach the optimal degree of cross linking and ensureing that goods have higher hardness, are difficult to warpage, the addition of nucleator advantageously reduces goods bubble；Using the goods of this composition production, surfaces externally and internally is smooth, it is easy to the demoulding, and the degree of cross linking is high, goods good combination property.
Description
Technical field
The present invention relates to a kind of for cross-linked polyolefin composition for rotational molding and preparation method thereof, belong to field of cross-linked polyolefin composition for rotational molding.
Background technology
Rotational moulding crosslinked polyethylene, can cross-link in forming process, forms network structure, goods are made to have preeminent impact strength, heat-resisting croop property and low-temperature flexibility, good anti-permeability, anti-chemical performance, softening point up to 200 DEG C, can at 140 DEG C life-time service.
The ratio that on domestic market, polyethylene (PE) accounts for whole rotational moulding product raw materials used is about 75%, the wherein 95% rotational molding grade LLDPE being well suited to rotation molding, and the ratio of external rotational moulding PE material is substantially: LLDPE is 65%, XPE (crosslinked polyethylene) is 20%, HDPE is 10%, and LDPE is 5%.
Patent CN1523052A " Special cross-linked polyethylene material for rotational molding " is similar to CN1524899A " Special cross-linked polyethylene material for rotational molding and preparation method thereof ", it is PetroChina Company Ltd.'s application, apllied PP Pipe Compound is mainly made up of LLDPE, LDPE, cross-linking agent, antioxidant, but owing to the density of raw material LLDPE, LDPE is relatively low, after crosslinking, its density also can reduce further, after making molding there is hardness warpage poor, easy in goods, and exist in the rotational moulding course of processing and be prone to produce the shortcoming such as bubble, poor fluidity.
Summary of the invention
According to the deficiencies in the prior art, the technical problem to be solved in the present invention is: provides one for cross-linked polyolefin composition for rotational molding and preparation method thereof, improves the hardness of goods, be difficult to warpage, reduce goods bubble.
The technical solution adopted for the present invention to solve the technical problems is: provide one for cross-linked polyolefin composition for rotational molding, it is characterised in that comprising two kinds of components of A, B, A kind component and B component are made up of the raw material of following mass fraction:
Wherein component A includes:
Linear low density polyethylene (LLDPE) 100 parts
High density polyethylene (HDPE) (HDPE) 50～100 parts
Cross-linking agent 2～5 parts
Nucleator 0.2～1.0 parts
Lubricant 0.2～1.0 parts
B component is high density polyethylene (HDPE)
Described in cross-linked polyolefin composition for rotational molding the ratio of component A and B component be 90: 10～95: 5.
Described linear low density polyethylene: melt mass flow rate is 2-10g/10min, density is 0.926-0.940g/cm3。
The preferred melt mass flow rate of described linear low density polyethylene is 3～7g/10min, and density is 0.932-0.940g/cm3。
Described high density polyethylene (HDPE): melt mass flow rate is 2-14g/10min, density is more than 0.950g/cm3。
The preferred melt mass flow rate of described high density polyethylene (HDPE) is 4～9g/10min, density 0.950-0.960g/cm3。
Described cross-linking agent is peroxide, the half-life be the temperature of 1min be 170～270 DEG C.
Described cross-linking agent be cumyl peroxide, 2,5-dimethyl-2,5-di-t-butyl hexane peroxide or 2,5-dimethyl-2,5-di-t-butyl peroxy-3-hexin.
Described nucleator is the calcium carbonate of 1000-2500 mesh, potter's clay or calcium sulfate.
Described lubricant is calcium stearate or zinc stearate.
The described preparation method for cross-linked polyolefin composition for rotational molding is as follows:
By the various raw materials proportionally pelletize after height mixes conjunction of component A, mixing velocity is 800～1200 revs/min, and mixing temperature is 20～50 DEG C, incorporation time is 3～5 minutes, use single screw extrusion machine or double screw extruder pelletize, temperature 130～170 DEG C, be then ground to 35～45 mesh fine powders；
B component is directly ground to form 20～30 mesh fine powders；
Component A is ground powder and B component grind powder and proportionally mix and carry out rotational moulding, rotational moulding 20～30min when heating chamber temperature is 230～250 DEG C, after be increased to 270～290 DEG C of rotational moulding 10～20min again, after cooling, i.e. obtain made crosslinked products by heating chamber temperature.
Crosslinking rotational moulding material only has the degree of cross linking to reach more than 80% just can have preeminent impact strength, heat-resisting croop property and low-temperature flexibility, good anti-permeability, anti-chemical performance.If but the degree of cross linking to reach more than 80%, then material can be made during rotational moulding to occur to cross-link in advance and cause article inner surface coarse, be also easy on goods wall produce bubble.
The invention has the beneficial effects as follows: (1), by base resin selecting to reach the optimal degree of cross linking and ensureing that goods have higher hardness, are difficult to warpage, the addition of nucleator advantageously reduces goods bubble；
(2) by the physical blending of two kinds of raw materials to reach the purpose of rotational moulding layering, it is ensured that smooth, the bubble-free of goods surfaces externally and internally；
(3) using suitable preparation technology to ensure the performance of rotational moulding raw material, the inventive method is simple, is beneficial to operation；
(4) using the goods of this composition production, surfaces externally and internally is smooth, and plasticizing is good, and without obvious bubble, it is easy to the demoulding, the degree of cross linking is high, goods good combination property.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described further:
Embodiment 1～8
Raw materials used:
Linear low density polyethylene 1 (LLD1): melt mass flow rate (190 DEG C, 2.16kg) is 6g/10min, density 0.938g/cm3
Linear low density polyethylene 2 (LLD2): melt mass flow rate (190 DEG C, 2.16kg) is 4g/10min, density 0.936g/cm3
High density polyethylene (HDPE) 1 (HD1): melt mass flow rate (190 DEG C, 2.16kg) is 6.5g/10min, density 0.954g/cm3
High density polyethylene (HDPE) 2 (HD2): melt mass flow rate (190 DEG C, 2.16kg) is 7.5g/10min, density 0.958g/cm3
Cross-linking agent: cumyl peroxide (DCP) or 2,5-dimethyl-2,5-di-t-butyl hexane peroxide
Nucleator: 2000 mesh calcium carbonate (CaCO3) or 2500 mesh calcium sulfate (CaSO3)
Lubricant: zinc stearate (ZnSt) or calcium stearate
Embodiment preparation technology:
By the various raw materials proportionally pelletize after height mixes conjunction of component A, mixing velocity is 1000 revs/min, mixing temperature is 25 DEG C, and incorporation time is 4 minutes, uses single screw extrusion machine or double screw extruder pelletize, temperature 130～170 DEG C, it is then ground to fine powder, embodiment one～embodiment four grind to form 35 mesh fine powders, embodiment five～embodiment eight and grind to form 45 mesh fine powders, comparative example one grinds to form 35 mesh fine powders, and comparative example two grinds to form 45 mesh fine powders.
High density polyethylene (HDPE) 1, high density polyethylene (HDPE) 2 are directly ground to form powder, grinds to form 20 mesh fine powders, embodiment five～embodiment eight as B component, embodiment one～embodiment four and grind to form 30 mesh fine powders.
Component A is ground powder and B component grind powder and proportionally mix and carry out rotational moulding, the rotational moulding 25min when heating chamber temperature is 240 DEG C, after heating chamber temperature is increased to 280 DEG C of rotational moulding 15min again, i.e. obtain made crosslinked products after cooling.
Embodiment test method:
Gel content: sample at goods outer layer, it is cut into 0.5mm × 0.5mm × 0.5mm size, backflow 8 hours it is placed in decahydronaphthalene with 120 mesh filter screens after wrapping, take out residual sample put into after drying 150 DEG C of vacuum drying ovens be dried 3 hours be cooled to room temperature after weigh, be gel content with initial samples weight ratio.
Stretching yield stress: carry out according to standard GB/T1040.2, cuts out sample on goods.
Hardness: carry out according to standard GB/T2411, cuts out sample on goods.
Products appearance: range estimation.
Comparative example 1～2
Prepare this product according to conventional means, add proportioning raw materials part Tables 1 and 2.
Table 1 embodiment and comparative example ()
Table 2 embodiment and comparative example (two)
Claims (4)
1. one kind is used for cross-linked polyolefin composition for rotational molding, it is characterised in that comprise two kinds of components of A, B, component A and B group
Part is made up of the raw material of following mass fraction:
Wherein component A includes:
Linear low density polyethylene 100 parts
High density polyethylene (HDPE) 50～100 parts
Cross-linking agent 2～5 parts
Nucleator 0.2～1.0 parts
Lubricant 0.2～1.0 parts
B component is high density polyethylene (HDPE)
Described in cross-linked polyolefin composition for rotational molding the ratio of component A and B component be 90:10～95:5；
Described linear low density polyethylene melt mass flow rate is 3～7g/10min, and density is 0.932-0.940g/cm3；
Described high density polyethylene (HDPE): melt mass flow rate is 2-14g/10min, density is more than 0.950g/cm3；
The measuring condition of melt mass flow rate is 190 DEG C, 2.16kg；
Described cross-linking agent is cumyl peroxide or 2,5-dimethyl-2,5-di-t-butyl peroxy-3-hexin.
The most according to claim 1 for cross-linked polyolefin composition for rotational molding, it is characterised in that described nucleator is
The calcium carbonate of 1000-2500 mesh, potter's clay or calcium sulfate.
The most according to claim 1 for cross-linked polyolefin composition for rotational molding, it is characterised in that described lubricant is hard
Fat acid calcium or zinc stearate.
The most according to claim 1 for cross-linked polyolefin composition for rotational molding, it is characterised in that described for rotational moulding
The preparation method of cross-linked polyolefin compositions is as follows:
By the various raw materials proportionally pelletize after height mixes conjunction of component A, mixing velocity is 800～1200 revs/min, mixing temperature
Degree is 20～50 DEG C, and incorporation time is 3～5 minutes, employing single screw extrusion machine or double screw extruder pelletize, temperature 130～170 DEG C,
It is then ground to 35～45 mesh fine powders；
B component is directly ground to form 20～30 mesh fine powders；
Component A is ground powder and B component grind powder and proportionally mix and carry out rotational moulding, be 230～250 DEG C in heating chamber temperature
Time rotational moulding 20～30min, after heating chamber temperature is increased to 270～290 DEG C of rotational moulding 10～20min again, after cooling and get final product.
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| CN201210089752.0A CN102731881B (en) | 2012-03-30 | 2012-03-30 | For cross-linked polyolefin composition for rotational molding and preparation method thereof |
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| CN102731881B true CN102731881B (en) | 2016-08-17 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106366430A (en) * | 2016-09-20 | 2017-02-01 | 神华集团有限责任公司 | Crosslinkable polyethylene composition, crosslinked polyethylene, preparing method, product and application |
| CN106336568A (en) * | 2016-09-20 | 2017-01-18 | 神华集团有限责任公司 | Crosslinked polyethylene and preparation method and application thereof |
| CN106905595A (en) * | 2017-03-15 | 2017-06-30 | 江西乐富军工装备有限公司 | Military rotational moulding ammunition packing composite material special |
| CN107987370A (en) * | 2017-12-20 | 2018-05-04 | 宁波春华汽配有限公司 | A kind of high intensity rotational moulding polyethylene mixture and preparation method thereof |
| CN108407165B (en) * | 2018-03-14 | 2020-10-30 | 西陇科学股份有限公司 | Rotational molding preparation method of ultra-pure reagent packaging barrel with gradient structure |
| CN112778597B (en) * | 2019-11-08 | 2022-04-19 | 国家能源投资集团有限责任公司 | Polyethylene composition, polyethylene double-layer composite material and preparation method thereof |
| CN112778596B (en) * | 2019-11-08 | 2022-06-17 | 国家能源投资集团有限责任公司 | Polyolefin composition and polyolefin composite material and preparation method thereof |
| CN111349284A (en) * | 2020-03-20 | 2020-06-30 | 广东景呈电力设备有限公司 | High-fluidity high-strength polyethylene mixture for rotational molding and preparation method thereof |
| CN113896971B (en) * | 2020-06-22 | 2023-08-11 | 中国石油化工股份有限公司 | Polyethylene composition and method for producing the same |
| CN115895075B (en) * | 2021-08-20 | 2024-05-17 | 中国石油化工股份有限公司 | Rotational molding high-density polyethylene composition, and preparation method and application thereof |
| CN114800985B (en) * | 2022-05-05 | 2024-01-26 | 安徽锐途新材料科技有限公司 | Rotational molding crosslinked polyethylene hand mold, composition and preparation method thereof |
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| CN1688654A (en) * | 2002-10-01 | 2005-10-26 | 埃克森美孚化学专利公司 | Polyethylene compositions for rotational molding |
| CN102061027A (en) * | 2010-12-10 | 2011-05-18 | 南京聚隆科技股份有限公司 | Nano imvite talcum powder rotantional moulding-gradecross-linked polyethylene composite material and preparation method thereof |
| CN102061030A (en) * | 2010-12-10 | 2011-05-18 | 南京聚隆科技股份有限公司 | High-abrasion-resistant corrosion-resistant inorganic particle crosslinking polyethylene composite material and preparation method thereof |
-
2012
- 2012-03-30 CN CN201210089752.0A patent/CN102731881B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1688654A (en) * | 2002-10-01 | 2005-10-26 | 埃克森美孚化学专利公司 | Polyethylene compositions for rotational molding |
| CN102061027A (en) * | 2010-12-10 | 2011-05-18 | 南京聚隆科技股份有限公司 | Nano imvite talcum powder rotantional moulding-gradecross-linked polyethylene composite material and preparation method thereof |
| CN102061030A (en) * | 2010-12-10 | 2011-05-18 | 南京聚隆科技股份有限公司 | High-abrasion-resistant corrosion-resistant inorganic particle crosslinking polyethylene composite material and preparation method thereof |
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| CN102731881A (en) | 2012-10-17 |
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