CN102241846A - Calcium sulfate whisker modified high density polyethylene composite material and preparation method thereof - Google Patents
Calcium sulfate whisker modified high density polyethylene composite material and preparation method thereof Download PDFInfo
- Publication number
- CN102241846A CN102241846A CN2011100960197A CN201110096019A CN102241846A CN 102241846 A CN102241846 A CN 102241846A CN 2011100960197 A CN2011100960197 A CN 2011100960197A CN 201110096019 A CN201110096019 A CN 201110096019A CN 102241846 A CN102241846 A CN 102241846A
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- Prior art keywords
- calcium sulfate
- density polyethylene
- parts
- whiskers
- composite material
- Prior art date
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- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 title claims abstract description 103
- 229920001903 high density polyethylene Polymers 0.000 title claims abstract description 77
- 239000004700 high-density polyethylene Substances 0.000 title claims abstract description 77
- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 28
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 26
- 239000000314 lubricant Substances 0.000 claims abstract description 23
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000007822 coupling agent Substances 0.000 claims abstract description 17
- 239000004709 Chlorinated polyethylene Substances 0.000 claims abstract description 15
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000013078 crystal Substances 0.000 claims description 22
- 239000002351 wastewater Substances 0.000 claims description 22
- 239000003963 antioxidant agent Substances 0.000 claims description 8
- 230000003078 antioxidant effect Effects 0.000 claims description 8
- 238000005453 pelletization Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract 1
- 238000005469 granulation Methods 0.000 abstract 1
- 230000003179 granulation Effects 0.000 abstract 1
- UTPYTEWRMXITIN-YDWXAUTNSA-N 1-methyl-3-[(e)-[(3e)-3-(methylcarbamothioylhydrazinylidene)butan-2-ylidene]amino]thiourea Chemical compound CNC(=S)N\N=C(/C)\C(\C)=N\NC(=S)NC UTPYTEWRMXITIN-YDWXAUTNSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000006353 environmental stress Effects 0.000 description 2
- 206010010219 Compulsions Diseases 0.000 description 1
- -1 Polyethylene Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000000758 substrate Substances 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
- B29C48/40—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
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
-
- 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
- B29C2948/92885—Screw or gear
-
- 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)
Abstract
The invention relates to a calcium sulfate whisker modified high density polyethylene composite material and a preparation method thereof. The calcium sulfate whisker modified high density polyethylene composite material is prepared from the following raw materials: 100 parts by weight of high density polyethylene, 10-40 parts by weight of calcium sulfate whiskers, 10-20 parts by weight of linear low density polyethylene, 10-20 parts by weight of chlorinated polyethylene, 0.1-0.3 parts by weight of an antioxidant 1010, 1-4 parts by weight of a lubricant Hst, and 1-3 parts by weight of a titanate coupling agent. The preparation method of the composite material comprises the following steps: 1, adding the calcium sulfate whiskers and the titanate coupling agent into a high speed mixer to mix for 5-12 min; 2, mixing other raw materials with modified calcium sulfate whiskers in the high speed mixer for 5-10 min; and 3, carrying out extrusion granulation on a mixture obtained in step 2 by a twin screw. The calcium sulfate whisker modified high density polyethylene composite material of the present invention which has the advantages of high strength, good toughness and good stress cracking resistance is especially suitable for various places needing high strength materials.
Description
Technical field
The present invention relates to a kind of high-density polyethylene composite material and preparation method thereof, relate in particular to a kind of calcium sulfate whisker modified high-density polyethylene composite material and preparation method thereof.
Background technology
Polyethylene is the current production rate maximum, most widely used plastics variety.The high-crystallinity of high density polyethylene(HDPE) (HDPE) has determined its high-density, makes it have excellent tensile strength, the high temperature transverse strength, and viscosity, chemical stability are good.But HDPE belongs to soft and tough polymkeric substance, removes tensile strength, and outside the high temperature transverse strength, other mechanical property absolute values all are lower in plastic material; And the environmental stress cracking resistance of HDPE is poor, and these have all limited the widespread use of HDPE.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes the deficiency of existing high-density polyethylene material, and a kind of intensity height, a kind of calcium sulfate whisker modified high-density polyethylene composite material that environmental stress cracking resistance is good and preparation method thereof are provided.
The present invention solve the technical problem the technical scheme that is adopted:
The present invention's calcium sulfate whisker modified high-density polyethylene composite material is made by the raw material of following parts by weight: 100 parts of high density polyethylene(HDPE)s (HDPE), 10 ~ 40 parts of calcium sulfate crystal whiskers, 10 ~ 20 parts of linear low density polyethylenes (LLDPE), 10 ~ 20 parts of chlorinatedpolyethylenees (CPE), 0.1 ~ 0.3 part of antioxidant 1010,1 ~ 4 part of lubricant Hst, 1 ~ 3 part of titanate coupling agent.
Preferred weight proportion is: 100 parts of high density polyethylene(HDPE)s (HDPE), 15 parts of calcium sulfate crystal whiskers, 20 parts of linear low density polyethylenes (LLDPE), 20 parts of chlorinatedpolyethylenees (CPE), 0.1 part of antioxidant 1010,1 part of lubricant Hst, 2 parts of titanate coupling agents.
The preparation method of the present invention's calcium sulfate whisker modified high-density polyethylene composite material comprises the steps:
(1), join and mix the preferred 10min of 5 ~ 12min(in the high-speed mixer with calcium sulfate crystal whiskers and titanate coupling agent), get wastewaters with modified calcium sulfate whiskers; Wastewaters with modified calcium sulfate whiskers length-to-diameter ratio 10 ~ 30, mean diameter 0.5 ~ 3
(2) described high density polyethylene(HDPE), linear low density polyethylene, chlorinatedpolyethylene, antioxidant 1010, lubricant Hst are added in the high-speed mixer, the preferred 7min of mixing 5 ~ 10min(under 65～75 ℃ (preferred 70 ℃)), get the mixture of high density polyethylene(HDPE), linear low density polyethylene, chlorinatedpolyethylene, antioxidant 1010, lubricant Hst and wastewaters with modified calcium sulfate whiskers;
(3) with step (2) gained mixture extruding pelletization in twin screw, barrel temperature is 160 ~ 200 ℃ (preferred 180 ℃), and screw speed is 100 ~ 150 rev/mins (preferred 120 rev/mins).
Calcium sulfate crystal whiskers claims crystal whisker of gypsum again, is a kind of fibrous single crystal of calcium sulfate.Studies show that the wastewaters with modified calcium sulfate whiskers of the present invention's use has uniform cross-sectional area, complete internal structure, this feature are given its intensity near valence link between crystal theoretical value-atom.Because it has high intensity, trickle size, easily and the interfacial adhesion of polymkeric substance such as plastics and rubber, improve consistency and interface cohesive force with matrix, when being subjected to the foreign compulsion orientation, unrelieved stress in the high density polyethylene(HDPE) can pass to calcium sulfate crystal whiskers well, thereby improves the intensity of high density polyethylene(HDPE), improves the toughness of high density polyethylene(HDPE) simultaneously; Because calcium sulfate crystal whiskers is an inorganics, in high density polyethylene substrate, be uniformly dispersed, be difficult for reuniting, make composite property stable; Through the dual function of LLDPE and CPE, the stress crack resistance performance of HDPE matrix material improves greatly.Simultaneously, calcium sulfate crystal whiskers has certain length-to-diameter ratio, and the flexural strength of matrix material and modulus are improved greatly.
The present invention's calcium sulfate whisker modified high-density polyethylene composite material, since the intensity height, good toughness, stress crack resistance performance is good, and stable performance is specially adapted to the various indoor and outdoor places that need high-strength material.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail.
Embodiment 1
The calcium sulfate whisker modified high-density polyethylene composite material of present embodiment is made by the raw material of following parts by weight: 100 parts of HDPE, 10 parts of calcium sulfate crystal whiskers, 20 parts of LLDPE, CPE10 part, 0.1 part of antioxidant 1010,1 part of lubricant Hst, 1 part of titanate coupling agent.
The preparation method:
(1) with calcium sulfate crystal whiskers and titanate coupling agent, join and mix 10min in the high-speed mixer, get wastewaters with modified calcium sulfate whiskers; Wastewaters with modified calcium sulfate whiskers length-to-diameter ratio 19, mean diameter 1.6
(2) described high density polyethylene(HDPE), linear low density polyethylene, chlorinatedpolyethylene, antioxidant 1010, lubricant Hst are added in the high-speed mixer, under 70 ℃, mix 7min, get the mixture of high density polyethylene(HDPE), linear low density polyethylene, chlorinatedpolyethylene, antioxidant 1010, lubricant Hst and wastewaters with modified calcium sulfate whiskers;
(3) with step (2) gained mixture extruding pelletization in twin screw, barrel temperature is 180 ℃, and screw speed is 120 rev/mins.
The Mechanics Performance Testing of present embodiment product is undertaken by the ATSM prescriptive procedure, the results are shown in Table 1.
Embodiment 2
The calcium sulfate whisker modified high-density polyethylene composite material of present embodiment is made by the raw material of following parts by weight: 100 parts of HDPE, 15 parts of calcium sulfate crystal whiskers, 20 parts of LLDPE, 20 parts of CPE, 0.1 part of antioxidant 1010,1 part of lubricant Hst, 2 parts of titanate coupling agents.
The preparation method:
(1) with calcium sulfate crystal whiskers and titanate coupling agent, join and mix 10min in the high-speed mixer, get wastewaters with modified calcium sulfate whiskers; Wastewaters with modified calcium sulfate whiskers length-to-diameter ratio 20, mean diameter 1.5
(2) described high density polyethylene(HDPE), linear low density polyethylene, chlorinatedpolyethylene, antioxidant 1010, lubricant Hst are added in the high-speed mixer, under 70 ℃, mix 7min, get the mixture of high density polyethylene(HDPE), linear low density polyethylene, chlorinatedpolyethylene, antioxidant 1010, lubricant Hst and wastewaters with modified calcium sulfate whiskers;
(3) with step (2) gained mixture extruding pelletization in twin screw, barrel temperature is 180 ℃, and screw speed is 120 rev/mins.
The Mechanics Performance Testing of present embodiment product is undertaken by the ATSM prescriptive procedure, the results are shown in Table 1.
Embodiment 3
The calcium sulfate whisker modified high-density polyethylene composite material of present embodiment is made by the raw material of following parts by weight: 100 parts of HDPE, 20 parts of calcium sulfate crystal whiskers, 10 parts of LLDPE, 10 parts of CPE, 0.1 part of antioxidant 1010,1 part of lubricant Hst, 3 parts of titanate coupling agents.
The preparation method:
(1) with calcium sulfate crystal whiskers and titanate coupling agent, join and mix 10min in the high-speed mixer, get wastewaters with modified calcium sulfate whiskers; Wastewaters with modified calcium sulfate whiskers length-to-diameter ratio 21, mean diameter 1.2
(2) described high density polyethylene(HDPE), linear low density polyethylene, chlorinatedpolyethylene, antioxidant 1010, lubricant Hst are added in the high-speed mixer, under 70 ℃, mix 7min, get the mixture of high density polyethylene(HDPE), linear low density polyethylene, chlorinatedpolyethylene, antioxidant 1010, lubricant Hst and wastewaters with modified calcium sulfate whiskers;
(3) with step (2) gained mixture extruding pelletization in twin screw, barrel temperature is 180 ℃, and screw speed is 120 rev/mins.
The Mechanics Performance Testing of present embodiment product is undertaken by the ATSM prescriptive procedure, the results are shown in Table 1.
Embodiment 4
The calcium sulfate whisker modified high-density polyethylene composite material of present embodiment is made by the raw material of following parts by weight: 100 parts of HDPE, 30 parts of calcium sulfate crystal whiskers, 10 parts of LLDPE, 20 parts of CPE, 0.1 part of antioxidant 1010,1 part of lubricant Hst, 2 parts of titanate coupling agents.
The preparation method:
(1) with calcium sulfate crystal whiskers and titanate coupling agent, join and mix 10min in the high-speed mixer, get wastewaters with modified calcium sulfate whiskers; Wastewaters with modified calcium sulfate whiskers length-to-diameter ratio 24, mean diameter 2
(2) described high density polyethylene(HDPE), linear low density polyethylene, chlorinatedpolyethylene, antioxidant 1010, lubricant Hst are added in the high-speed mixer, under 70 ℃, mix 7min, get the mixture of high density polyethylene(HDPE), linear low density polyethylene, chlorinatedpolyethylene, antioxidant 1010, lubricant Hst and wastewaters with modified calcium sulfate whiskers;
(3) with step (2) gained mixture extruding pelletization in twin screw, barrel temperature is 180 ℃, and screw speed is 120 rev/mins.
The Mechanics Performance Testing of present embodiment product is undertaken by the ATSM prescriptive procedure, the results are shown in Table 1.
Table 1 embodiment 1-4 product mechanical property relatively
Claims (4)
1. calcium sulfate whisker modified high-density polyethylene composite material, it is characterized in that, raw material by following parts by weight is made: 100 parts of high density polyethylene(HDPE)s, 10 ~ 40 parts of calcium sulfate crystal whiskers, 10 ~ 20 parts of linear low density polyethylenes, 10 ~ 20 parts of chlorinatedpolyethylenees, 0.1 ~ 0.3 part of antioxidant 1010,1 ~ 4 part of lubricant Hst, 1 ~ 3 part of titanate coupling agent.
2. calcium sulfate whisker modified high-density polyethylene composite material according to claim 1, it is characterized in that, raw material by following parts by weight is made: 100 parts of high density polyethylene(HDPE)s, 15 parts of calcium sulfate crystal whiskers, 20 parts of linear low density polyethylenes, 20 parts of chlorinatedpolyethylenees, 0.1 part of antioxidant 1010,1 part of lubricant Hst, 2 parts of titanate coupling agents.
3. the preparation method of a calcium sulfate whisker modified high-density polyethylene composite material as claimed in claim 1 or 2 is characterized in that, may further comprise the steps:
(1) with calcium sulfate crystal whiskers and titanate coupling agent, join and mix 5 ~ 12min in the high-speed mixer, get wastewaters with modified calcium sulfate whiskers; Wastewaters with modified calcium sulfate whiskers length-to-diameter ratio 10 ~ 30, mean diameter 0.5 ~ 3
(2) described high density polyethylene(HDPE), linear low density polyethylene, chlorinatedpolyethylene, antioxidant 1010, lubricant Hst are added in the high-speed mixer, under 65～75 ℃, mix 5 ~ 10min, get the mixture of high density polyethylene(HDPE), linear low density polyethylene, chlorinatedpolyethylene, antioxidant 1010, lubricant Hst and wastewaters with modified calcium sulfate whiskers;
(3) with step (2) gained mixture extruding pelletization in twin screw, barrel temperature is 160 ℃ ~ 200 ℃, and screw speed is 100 ~ 150 rev/mins.
4. the preparation method of a calcium sulfate whisker modified high-density polyethylene composite material as claimed in claim 3 is characterized in that, may further comprise the steps:
(1) with calcium sulfate crystal whiskers and titanate coupling agent, join and mix 10min in the high-speed mixer, get wastewaters with modified calcium sulfate whiskers; Wastewaters with modified calcium sulfate whiskers length-to-diameter ratio 20, mean diameter 1.5
(2) described high density polyethylene(HDPE), linear low density polyethylene, chlorinatedpolyethylene, antioxidant 1010, lubricant Hst are added in the high-speed mixer, under 70 ℃, mix 7min, get the mixture of high density polyethylene(HDPE), linear low density polyethylene, chlorinatedpolyethylene, antioxidant 1010, lubricant Hst and wastewaters with modified calcium sulfate whiskers;
(3) with step (2) gained mixture extruding pelletization in twin screw, barrel temperature is 180 ℃, and screw speed is 120 rev/mins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100960197A CN102241846B (en) | 2011-04-18 | 2011-04-18 | Calcium sulfate whisker modified high density polyethylene composite material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100960197A CN102241846B (en) | 2011-04-18 | 2011-04-18 | Calcium sulfate whisker modified high density polyethylene composite material and preparation method thereof |
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| CN102241846B CN102241846B (en) | 2012-11-28 |
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| CN102977445A (en) * | 2012-11-23 | 2013-03-20 | 重庆锦利塑业有限公司 | High-density polyethylene material |
| CN103059384A (en) * | 2013-01-27 | 2013-04-24 | 山东轻工业学院 | A special masterbatch for recycled polyethylene plastic |
| CN103059400A (en) * | 2012-12-18 | 2013-04-24 | 滁州凯凯建筑节能有限公司 | Polyethylene/EVA (Ethylene-Vinyl Acetate) coating coconut husk powder particle blending foaming material and preparation method thereof |
| CN103059396A (en) * | 2012-12-18 | 2013-04-24 | 滁州凯凯建筑节能有限公司 | Polyethylene/CPE (Chlorinated Polyethylene) coating coconut husk powder particle blending foaming material and preparation method thereof |
| CN104311985A (en) * | 2014-10-30 | 2015-01-28 | 安徽电信器材贸易工业有限责任公司 | High-strength polyethylene cable jacket material and preparation method thereof |
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