CN102585324A - Polyethylene composition for improving yellow index and lustrousness and preparation method thereof - Google Patents
Polyethylene composition for improving yellow index and lustrousness and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a polyethylene composition. The polyethylene composition is characterized by containing the following components in parts by mass: 100 parts of polyethylene, 0.2-0.5 part of antioxidant, 0.05-0.3 part of halogen absorbent and 0.05-1.0 part of filling agent, wherein the filling agent is an inorganic nanometer powder body. The polyethylene composition has the benefits that the mechanical property and the thermal property are equivalent to or slightly better than those of a basis material, the yellow index is remarkably reduced and the surface lustrousness is greatly improved. The invention also discloses a preparation method of the polyethylene composition.
Description
Technical field
The present invention relates to polyethylene compsn.
Background technology
Vilaterm (PE) is that a kind of property favorable rates is honest and clean, and broad-spectrum resins for universal use has good insulating; Good heat resistance; The advantage that density is little, and with its good mechanical property, processing characteristics, in industries such as electronics, machinery, daily necessities, be widely used.Vilaterm is not only closely related with daily life.And become the indispensable important materials of industrial and agricultural production; Continuous increase along with China's polyethylene product output and consumption; The annual waste polyethylene that produces is also more and more, and recycling these waste polyethylenes also becomes increasingly serious environment and social concern.In the past, mainly be to burn and landfill to the treatment process of waste polyethylene, in recent years, because the petroleum resources growing tension, crude oil price rose violently, and also when the river rises the boat goes up for the price of plastic raw materials, so begin after the technics of reclaim of plastic waste to pay attention to utilize and energy regeneration again.
Yet Vilaterm in use can wear out, and in the course of processing, molecular structure also can change.High temperature oxidation, mechanical shearing etc. can cause that all chain cuts off reaction, cause crosslinking reaction and DeR, molecular weight or improve or reduce; Also influence MWD greatly, thereby change rheological property, mechanical property and the apparent property etc. of polythene material.The Vilaterm application scenario is different, and the mechanical property of its waste material is also different; Used macromolecular material is because of existing degraded meetings such as initiator, defective faster.Therefore, reclaim Vilaterm, tend to occur surface property and descend,, influenced and reclaimed poly regeneration and utilization like comparatively serious xanthochromia through life-time service with after repeatedly processing.
Under another kind of situation; Even the polyolefin resin of new production; Usually can add multiple auxiliary agent in actual use, like UV light absorber, oxidation inhibitor and other auxiliary agent, perhaps the product ash content is higher; Even only be that the shelf-time is long slightly, also the phenomenon that color of resin deepens can appear.Patent 200780036813.4 is mentioned, and a kind of complex phenomena during variable color depends on multiple factor, comprises relict catalyst, vinyl ends and inhibitor.
In actually operating, also can hide polythene material apparent colour flavescence that repeatedly processing causes through adding white titanium pigment as tinting material, increase whiteness.Yet addition is bigger on the one hand through adding the white titanium pigment mode, causes cost to increase, and has also had a strong impact on the optics and the mechanical property of polythene material itself on the other hand.
Patent CN 200780036813.4 discloses a kind of method of manufacture of high-density polyethylene composition, and its component comprises that density is 0.940 to 0.980g/cm
3High density polyethylene polyethylene polymers, polyoxyethylene glycol and 3-(3; The 5-di-tert-butyl-hydroxy phenyl) propionic acid stearyl; Through the latter two being blended in the high density polyethylene(HDPE) and carrying out granulation, obtaining yellowness index is the high-density polyethylene composition less than-2.5.Whether this compsn effectively reduces the yellowness index of material, but undeclared effective to LLDPE, and whether also undeclared other apparent property such as surface gloss to material has improvement.
Patent CN 200880001620.X will comprise that the inert hydrocarbon diluent and the triethyl-boron promotor that contain small amount of ethylene add in the reactor drum; The polymerization of carrying out vinyl monomer obtains polyethylene polymer fine hair; And heat extruding pelletization and obtain polymeric aggregate, the yellowness index of this pellet after 175 ℉ aging 60 hours is than in same reaction conditions but do not add the triethyl-boron promotor and prepare polymerisate little at least 5%.The production of this polymkeric substance need begin from polyreaction, is difficult to carry out under the conventional situation.
Therefore; The present present situation in this area is that hope can provide a kind of like this method, can be with both economical mode; Improve the yellowness index and the surface gloss of polyvinyl resin effectively, thereby improve the apparent property that reclaims the polyvinyl resin quality or improve polyvinyl resin.
Summary of the invention
The object of the invention is exactly the problems referred to above that exist in the prior art in order to solve, and a kind of have polyethylene compsn that improves apparent property and the method for preparing said polyethylene compsn are provided.
Technical scheme of the present invention is following:
A kind of polyethylene compsn is characterized in that comprising the Vilaterm of 100 mass parts, the oxidation inhibitor of 0.2 ~ 0.5 mass parts, the halogen-absorber of 0.05 ~ 0.3 mass parts and the weighting agent of 0.05 ~ 1.0 mass parts, and said weighting agent is an inorganic nanometer powder.
[0011] above-mentioned polyethylene compsn; Said Vilaterm is high density polyethylene(HDPE) (HDPE), medium-density polyethylene (MDPE) or LLDPE (LLDPE) or the mixture of two kinds of arbitrary proportions, preferably high density polyethylene(HDPE) (HDPE) or LLDPE (LLDPE) in them.
Above-mentioned polyethylene compsn, said oxidation inhibitor are selected from the organic antioxidant that routine is synthetic or commercialization is sold, and are made up of primary antioxidant and auxiliary anti-oxidant usually.
Above-mentioned polyethylene compsn; Said primary antioxidant is selected from conventional polyolefine and gets final product with the commercialization primary antioxidant, as 2, and 6-di-tert-butyl methyl phenol (article number: antioxidant BHT); β-(4-hydroxyl-3; The 5-di-tert-butyl-phenyl) the positive octadecanol ester of propionic acid (article number: antioxidant 1076), four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (article number: one or more antioxidant 1010).Wherein said primary antioxidant is preferably four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (article number: antioxidant 1010).
Above-mentioned polyethylene compsn; Said auxiliary anti-oxidant is selected from conventional commercialization auxiliary antioxidant and gets final product, as three nonylated phenyl phosphites (article number: oxidation inhibitor TNPP), (2; The 4-di-tert-butyl-phenyl) tris phosphite (article number: oxidation inhibitor 168); Oxidation inhibitor 618) and pentaerythritol bis-phosphite two (2,4-di-tert-butyl phenyl) ester (oxidation inhibitor 626) distearyl pentaerythritol diphosphite (article number:.Wherein preferred (2, the 4-di-tert-butyl-phenyl) tris phosphite (article number: oxidation inhibitor 168).
Above-mentioned polyethylene compsn, said halogen-absorber are selected from one or more in calcium stearate, Zinic stearas or the synthetic hydrotalcite (DHT-4A), preferred calcium stearate, Zinic stearas, most preferably calcium stearate.
Above-mentioned polyethylene compsn, described weighting agent are a kind of inorganicss of nano-scale.The so-called nanometer here is meant that weighting agent has the molecule material of the perhaps above grain-size of one dimension less than 100 nanometers at least; Comprise inorganic ultrafine particle and fine and close aggregate thereof; And, comprise various powders materials such as metal, nonmetal, organic and inorganic and biology by the material that crystallite constituted of size in 1 ~ 100 nanometer.Like nano-calcium carbonate, nano silicate, nano titanium oxide, nano silicon oxide, nano-aluminium oxide or nanometer B
2O
3P
2O
5The inorganic crystal powder.The B of wherein preferred nano silicate, nano titanium oxide, nano silicon oxide and about 50 nanometers of median size
2O
3P
2O
5Inorganic crystal powder, most preferably nanometer B
2O
3P
2O
5The inorganic crystal powder.
A kind of method of manufacture of polyethylene compsn of the present invention; It may further comprise the steps: the step of preparation polyethylene mixture; Wherein said polyethylene blend comprises above-mentioned Vilaterm, oxidation inhibitor, halogen-absorber and weighting agent and obtains the step of said polyethylene compsn pellet through melt-blending process.
First step of embodiment of the present invention is the preparation polyethylene mixture.Usually; Polyethylene mixture can obtain by following dual mode: a kind of mode is a direct mixing method; Promptly polyethylene powder or pellet, oxidation inhibitor, halogen-absorber and weighting agent (and other necessary auxiliary agents) are mixed, thereby obtain described polyethylene mixture through any appropriate means (such as mixed at high speed, blending and pickling process etc.).Another kind of mode is the aid master batches method, promptly at first needed various auxiliary agents, filler and a small amount of Vilaterm basis resin is carried out mixing granulation, makes aid master batches.After according to proportioning said aid master batches and polyethylene pellet being carried out blending then, thereby obtain described polyethylene mixture.
After having made ethylene copolymer composition of the present invention; (single screw rod melt extrudes melt-blending process through routine; Twin screw melt extrudes, the banburying blend) said mixture is carried out melting mixing, cooling, discharging, can make polyethylene compsn of the present invention.
In the manufacturing of polyethylene compsn of the present invention, can adopt aforementioned any one method.
Based on a preferred embodiment of the present invention, this polyethylene composition is after raw material is directly mixed, to make through continuous fusion extruding pelletization (preferred double screw extruder).Particularly, with described polyethylene powder, oxidation inhibitor, halogen-absorber and weighting agent, after in super mixer, mixing, add the cocurrent and parallel twin screw extruder immediately and melt extrude granulation.Generally speaking, used extruder temperature is 150 ~ 280 ℃, preferred 180 ~ 220 ℃.
Beneficial effect of the present invention is: polyethylene compsn of the present invention has the mechanical property that quite or slightly improves with base-material, thermal property and the yellowness index that obviously reduces, and increase substantially surface gloss.
Embodiment
In following examples and Comparative Examples, further describe the present invention.These embodiment only are the representative instances of using technical scheme of the present invention, and the present invention is not limited to these embodiment, and all employings are equal to replacement or equivalent transformation and the technical scheme that forms, all drop within the scope of requirement protection of the present invention.
The melt flow rate(MFR) of compsn is measured reference standard GB/T 3682-2000 and is carried out (unit is g/10min).
The socle girder notched Izod impact strength of compsn is measured reference standard GB/T 1843-2008 and is carried out (unit is kJ/cm2).
The melt flow rate(MFR) of compsn is measured reference standard GB/T 3682-2000 and is carried out (unit is g/10min).
The mensuration reference standard GB/T 9341-2008 of the flexural strength of compsn and modulus in flexure carries out (unit is MPa).
The stretching yield stress of compsn, tensile strength and elongation at break are measured reference standard GB/T 1040.2-2006 and are carried out (unit is respectively MPa, MPa and %).
The heat-drawn wire of compsn is measured reference standard GB/T1634.1-2004 and is carried out (unit for ℃).
The Vicat softening point of compsn is measured reference standard GB/T1633-2000 and is carried out (unit for ℃).
The yellowness index of compsn is measured reference standard GB/T2409-1989 and is carried out.
The glossiness of compsn is measured reference standard GB8807-1988 and is carried out (unit is %).
Reference examples 1
With 0.05 mass parts primary antioxidant (antioxidant 1010; Ciba), 0.15 mass parts auxiliary anti-oxidant (oxidation inhibitor 168; Ciba), 0.05 mass parts halogen-absorber (calcium stearate, Huzhou Linghu Xinwang Chemical Co., Ltd.) and 100 mass parts polyethylene powders (YLF 1820, Sinopec Yangzi Petrochemical Co); Add super mixer (SHR-10A; Zhangjiagang ten thousand molding machine tool ltds) mix in, 400 rev/mins of mixing speed mix 15 minutes time.Discharging after mixing is accomplished joins twin screw extruder (CTE-35, times Long Keya machinery ltd of section) lining with this blend composition, and mixing granulation under 170 ~ 220 ℃ of conditions obtains said compsn after oven dry.
The polyethylene compsn performance is seen table 1 and table 2.
Reference examples 2
With 0.05 mass parts primary antioxidant (antioxidant 1010), 0.15 mass parts auxiliary anti-oxidant (oxidation inhibitor 168), 0.05 mass parts halogen-absorber (calcium stearate) and 100 mass parts polyethylene powder (5000S; Sinopec Yangzi Petrochemical Co); Add in the super mixer (SHR-10A) and mix; 400 rev/mins of mixing speed mix 15 minutes time.Discharging after mixing is accomplished joins twin screw extruder (CTE-35) lining with this blend composition, and mixing granulation under 170 ~ 220 ℃ of conditions obtains said compsn after oven dry.
The polyethylene compsn performance is seen table 1 and table 2.
Embodiment 1
With 0.05 mass parts primary antioxidant (antioxidant 1010), 0.15 mass parts auxiliary anti-oxidant (oxidation inhibitor 168), 0.1 mass parts halogen-absorber (calcium stearate) and 0.05 mass parts weighting agent (B
2O
3P
2O
5Nano-powder, median size 50 nanometers, model: BPO, Nanjing gold electric light source factory in heptan) and 100 mass parts polyethylene powders (YLF 1820), mixing in the adding super mixer, 400 rev/mins of mixing speed mix 15 minutes time.Discharging after mixing is accomplished joins this blend composition in the twin screw extruder, and mixing granulation under 170 ~ 220 ℃ of conditions obtains said compsn after oven dry.
The polyethylene compsn performance is seen table 1 and table 2.
Embodiment 2
With 0.1 mass parts primary antioxidant (antioxidant 1010), 0.15 mass parts auxiliary anti-oxidant (oxidation inhibitor 168), 0.1 mass parts halogen-absorber (calcium stearate) and 0.1 mass parts weighting agent (B
2O
3P
2O
5Nano-powder, median size 50 nanometers, model: BPO, Nanjing gold electric light source factory in heptan) and 100 mass parts polyethylene powders (YLF 1820), mixing in the adding super mixer, 400 rev/mins of mixing speed mix 15 minutes time.Discharging after mixing is accomplished joins this blend composition in the twin screw extruder, and mixing granulation under 170 ~ 220 ℃ of conditions obtains said compsn after oven dry.
The polyethylene compsn performance is seen table 1 and table 2.
Embodiment 3
With 0.15 mass parts primary antioxidant (antioxidant 1010), 0.25 mass parts auxiliary anti-oxidant (oxidation inhibitor 168), 0.3 mass parts halogen-absorber (Zinic stearas) and 0.2 mass parts weighting agent (B
2O
3P
2O
5Nano-powder, median size 50 nanometers, model: BPO, Nanjing gold electric light source factory in heptan) and 100 mass parts polyethylene powders (YLF1820), mixing in the adding super mixer, 400 rev/mins of mixing speed mix 15 minutes time.Discharging after mixing is accomplished joins this blend composition in the twin screw extruder, and mixing granulation under 170 ~ 220 ℃ of conditions obtains said compsn after oven dry.
The polyethylene compsn performance is seen table 1 and table 2.
Embodiment 4
With 0.05 mass parts primary antioxidant (antioxidant 1076), 0.15 mass parts auxiliary anti-oxidant (oxidation inhibitor 168), 0.2 mass parts halogen-absorber (Zinic stearas) and 0.3 mass parts weighting agent (B
2O
3P
2O
5Nano-powder, median size 50 nanometers, model: BPO, Nanjing gold electric light source factory in heptan) and 100 mass parts polyethylene powders (YLF1820), mixing in the adding super mixer, 400 rev/mins of mixing speed mix 15 minutes time.Discharging after mixing is accomplished joins this blend composition in the twin screw extruder, and mixing granulation under 170 ~ 220 ℃ of conditions obtains said compsn after oven dry.
The polyethylene compsn performance is seen table 1 and table 2.
Embodiment 5
With 0.15 mass parts primary antioxidant (antioxidant 1076), 0.3 mass parts auxiliary anti-oxidant (oxidation inhibitor 168), 0.1 mass parts halogen-absorber (calcium stearate) and 0.15 mass parts weighting agent (B
2O
3P
2O
5Nano-powder, median size 50 nanometers, model: BPO, Nanjing gold electric light source factory in heptan) and 100 mass parts polyethylene powders (YLF1820), mixing in the adding super mixer, 400 rev/mins of mixing speed mix 15 minutes time.Discharging after mixing is accomplished joins this blend composition in the twin screw extruder, and mixing granulation under 170 ~ 220 ℃ of conditions obtains said compsn after oven dry.
The polyethylene compsn performance is seen table 1 and table 2.
Embodiment 6
With 0.1 mass parts primary antioxidant (antioxidant 1010), 0.15 mass parts auxiliary anti-oxidant (oxidation inhibitor 168), 0.1 mass parts halogen-absorber (calcium stearate) and 0.05 mass parts weighting agent (B
2O
3P
2O
5Nano-powder, median size 50 nanometers, model: BPO; Nanjing gold electric light source factory in heptan), adds in the super mixer and mix with 100 mass parts polyethylene powders (5000S raises sub-petrochemical complex ltd); 400 rev/mins of mixing speed mix 15 minutes time.Discharging after mixing is accomplished joins this blend composition in the twin screw extruder, and mixing granulation under 170 ~ 220 ℃ of conditions obtains said compsn after oven dry.
The polyethylene compsn performance is seen table 1 and table 2.
Embodiment 7
With 0.15 mass parts primary antioxidant (antioxidant 1010), 0.2 mass parts auxiliary anti-oxidant (oxidation inhibitor 168), 0.1 mass parts halogen-absorber (calcium stearate) and 0.1 mass parts weighting agent (B
2O
3P
2O
5Nano-powder, median size 50 nanometers, model: BPO, Nanjing gold electric light source factory in heptan) and 100 mass parts polyethylene powders (5000S), mixing in the adding super mixer, 400 rev/mins of mixing speed mix 15 minutes time.Discharging after mixing is accomplished joins this blend composition in the twin screw extruder, and mixing granulation under 170 ~ 220 ℃ of conditions obtains said compsn after oven dry.
The polyethylene compsn performance is seen table 1 and table 2.
Embodiment 8
With 0.1 mass parts primary antioxidant (antioxidant 1076), 0.2 mass parts auxiliary anti-oxidant (oxidation inhibitor 168), 0.05 mass parts halogen-absorber (calcium stearate) and 0.15 mass parts weighting agent (B
2O
3P
2O
5Nano-powder, median size 50 nanometers, model: BPO, Nanjing gold electric light source factory in heptan) and 100 mass parts polyethylene powders (5000S), mixing in the adding super mixer, 400 rev/mins of mixing speed mix 15 minutes time.Discharging after mixing is accomplished joins this blend composition in the twin screw extruder, and mixing granulation under 170 ~ 220 ℃ of conditions obtains said compsn after oven dry.
The polyethylene compsn performance is seen table 1 and table 2.
Embodiment 9
With 0.2 mass parts primary antioxidant (antioxidant 1076), 0.25 mass parts auxiliary anti-oxidant (oxidation inhibitor 168), 0.2 mass parts halogen-absorber (Zinic stearas) and 0.25 mass parts weighting agent (B
2O
3P
2O
5Nano-powder, median size 50 nanometers, model: BPO, Nanjing gold electric light source factory in heptan) and 100 mass parts polyethylene powders (5000S), mixing in the adding super mixer, 400 rev/mins of mixing speed mix 15 minutes time.Discharging after mixing is accomplished joins this blend composition in the twin screw extruder, and mixing granulation under 170 ~ 220 ℃ of conditions obtains said compsn after oven dry.
The polyethylene compsn performance is seen table 1 and table 2.
Embodiment 10
With 0.1 mass parts primary antioxidant (antioxidant 1076), 0.2 mass parts auxiliary anti-oxidant (oxidation inhibitor 168), 0.1 mass parts halogen-absorber (Zinic stearas) and 0.5 mass parts weighting agent (nano layered silicate powder; The nano imvite that the organic cation surfactant treatment is crossed; ChengDu ZhengGuang nanotemeter Plastic Cement Co., Ltd produces) and 100 mass parts polyethylene powders (YLF 1820); Add in the super mixer and mix; 400 rev/mins of mixing speed mix 15 minutes time.Discharging after mixing is accomplished joins this blend composition in the twin screw extruder, and mixing granulation under 170 ~ 220 ℃ of conditions obtains said compsn after oven dry.
The polyethylene compsn performance is seen table 1 and table 2.
Embodiment 11
With 0.15 mass parts primary antioxidant (antioxidant 1076), 0.15 mass parts auxiliary anti-oxidant (oxidation inhibitor 168), 0.2 mass parts halogen-absorber (Zinic stearas) and 1.0 mass parts weighting agent (nano layered silicate powders; The nano imvite that the organic cation surfactant treatment is crossed; ChengDu ZhengGuang nanotemeter Plastic Cement Co., Ltd produces) and 100 mass parts polyethylene powders (5000S); Add in the super mixer and mix; 400 rev/mins of mixing speed mix 15 minutes time.Discharging after mixing is accomplished joins this blend composition in the twin screw extruder, and mixing granulation under 170 ~ 220 ℃ of conditions obtains said compsn after oven dry.
The polyethylene compsn performance is seen table 1 and table 2.
Embodiment 12
With 0.1 mass parts primary antioxidant (antioxidant 1076), 0.2 mass parts auxiliary anti-oxidant (oxidation inhibitor 168), 0.2 mass parts halogen-absorber (Zinic stearas) and 0.8 mass parts weighting agent (nano titanium oxide; Product type: HTTi; Particle diameter 10-40 nanometer, purity 99%; Haitai Nano Material Co., Ltd., Nanjing produces) and 100 mass parts polyethylene powders (5000S), mixing in the adding super mixer, 400 rev/mins of mixing speed mix 15 minutes time.Discharging after mixing is accomplished joins this blend composition in the twin screw extruder, and mixing granulation under 170 ~ 220 ℃ of conditions obtains said compsn after oven dry.
The polyethylene compsn performance is seen table 1 and table 2.
Embodiment 13
With 0.15 mass parts primary antioxidant (antioxidant 1076), 0.2 mass parts auxiliary anti-oxidant (oxidation inhibitor 168), 0.15 mass parts halogen-absorber (calcium stearate) and 1.0 mass parts weighting agent (nano silicon oxides; Product type: HTSi; Particle diameter 20-60 nanometer, purity 99.9%; Haitai Nano Material Co., Ltd., Nanjing) with 100 mass parts polyethylene powders (YLF1820), mix in the adding super mixer, 400 rev/mins of mixing speed mix 15 minutes time.Discharging after mixing is accomplished joins this blend composition in the twin screw extruder, and mixing granulation under 170 ~ 220 ℃ of conditions obtains said compsn after oven dry.
The polyethylene compsn performance is seen table 1 and table 2.
Embodiment 14
With 0.15 mass parts primary antioxidant (antioxidant 1076), 0.25 mass parts auxiliary anti-oxidant (oxidation inhibitor 168), 0.2 mass parts halogen-absorber (calcium stearate) and 0.9 mass parts weighting agent (nano-aluminium oxide; Product type: HTAl; Particle diameter 20-60 nanometer, purity 99.9%; Haitai Nano Material Co., Ltd., Nanjing) with 100 mass parts polyethylene powders (YLF1820), mix in the adding super mixer, 400 rev/mins of mixing speed mix 15 minutes time.Discharging after mixing is accomplished joins this blend composition in the twin screw extruder, and mixing granulation under 170 ~ 220 ℃ of conditions obtains said compsn after oven dry.
The polyethylene compsn performance is seen table 1 and table 2.
The melt flow rate(MFR) of table 1 polyethylene compsn and mechanical property
| Sample number into spectrum | Melt flow rate(MFR) g/10min | Socle girder notched Izod impact strength kJ/m 2 | Flexural strength MPa | Modulus in flexure MPa | Stretching yield stress MPa | Tensile strength MPa | Elongation at break % |
| Reference examples 1 | 2.2 | 43.8 | 4.51 | 184 | 9.3 | 17.0 | 647 |
| Embodiment 1 | 2.2 | 44.3 | 4.58 | 192 | 9.3 | 17.1 | 643 |
| Embodiment 2 | 2.2 | 45.1 | 4.70 | 195 | 9.4 | 16.9 | 638 |
| Embodiment 3 | 2.3 | 46.9 | 4.61 | 194 | 9.3 | 17.0 | 635 |
| Embodiment 4 | 2.3 | 47.0 | 4.72 | 204 | 9.4 | 16.6 | 592 |
| Embodiment 5 | 2.2 | 45.3 | 4.67 | 197 | 9.3 | 16.5 | 626 |
| Reference examples 2 | 1.1 | 48.2 | 17.50 | 847 | 25.7 | 32.5 | 758 |
| Embodiment 6 | 1.1 | 50.0 | 17.52 | 853 | 26.2 | 33.2 | 746 |
| Embodiment 7 | 1.1 | 51.1 | 17.65 | 852 | 25.1 | 31.4 | 740 |
| Embodiment 8 | 1.1 | 53.5 | 17.60 | 868 | 26.7 | 32.0 | 735 |
| Embodiment 9 | 1.2 | 56.7 | 17.73 | 879 | 26.0 | 34.2 | 728 |
| Embodiment 10 | 2.5 | 47.2 | 5.12 | 218 | 9.8 | 19.4 | 584 |
| Embodiment 11 | 1.4 | 56.5 | 19.38 | 956 | 25.6 | 33.1 | 678 |
| Embodiment 12 | 1.0 | 54.2 | 20.22 | 976 | 26.4 | 34.0 | 701 |
| Embodiment 13 | 1.9 | 43.0 | 6.74 | 225 | 11.1 | 20.4 | 605 |
| Embodiment 14 | 2.0 | 44.9 | 5,64 | 209 | 10.2 | 21.8 | 586 |
The thermal property of table 2 polyethylene compsn and surface property
| Sample number into spectrum | Heat-drawn wire ℃ | Vicat softening point ℃ | Yellowness index | Glossiness (20 °) | Glossiness (60 °) | Glossiness (85 °) |
| Reference examples 1 | 44 | 98 | 3.01 | 21.0 | 70.4 | 83.5 |
| Embodiment 1 | 44 | 99 | -1.82 | 46.8 | 75.4 | 89.7 |
| Embodiment 2 | 45 | 99 | -2.12 | 59.9 | 85.2 | 94.6 |
| Embodiment 3 | 44 | 97 | -2.56 | 61.9 | 83.0 | 91.8 |
| Embodiment 4 | 47 | 97 | -3.93 | 65.2 | 88.1 | 94.7 |
| Embodiment 5 | 45 | 98 | -2.30 | 58.3 | 86.1 | 93.4 |
| Reference examples 2 | 61 | 125 | 3.55 | 32.4 | 80.6 | 91.6 |
| Embodiment 6 | 63 | 125 | -1.54 | 63.7 | 86.6 | 98.6 |
| Embodiment 7 | 62 | 126 | -2.30 | 67.2 | 89.4 | 104.3 |
| Embodiment 8 | 64 | 125 | -2.95 | 68.0 | 91.2 | 112.8 |
| Embodiment 9 | 61 | 124 | -3.62 | 72.1 | 90.5 | 106.2 |
| Embodiment 10 | 48 | 100 | 0.67 | 69.2 | 79.8 | 102.4 |
| Embodiment 11 | 67 | 127 | -1.25 | 70.6 | 88.3 | 115.5 |
| Embodiment 12 | 75 | 135 | 1.26 | 74.7 | 105.0 | 119.7 |
| Embodiment 13 | 50 | 103 | 0.35 | 55.3 | 87.6 | 92.4 |
| Embodiment 14 | 48 | 104 | 2.03 | 46.9 | 84.2 | 90.0 |
Claims (8)
1. polyethylene compsn, it is characterized in that: it comprises the Vilaterm of 100 mass parts, the oxidation inhibitor of 0.2 ~ 0.5 mass parts, the halogen-absorber of 0.05 ~ 0.3 mass parts and the weighting agent of 0.05 ~ 1.0 mass parts, and said weighting agent is an inorganic nanometer powder.
2. polyethylene compsn according to claim 1 is characterized in that: said Vilaterm is high density polyethylene(HDPE), medium-density polyethylene or LLDPE or the mixture of two kinds of arbitrary proportions in them.
3. polyethylene compsn according to claim 1 is characterized in that: said oxidation inhibitor is made up of primary antioxidant and auxiliary anti-oxidant usually.
4. polyethylene compsn according to claim 4 is characterized in that: said primary antioxidant is four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester.
5. polyethylene compsn according to claim 3 is characterized in that: said auxiliary anti-oxidant is (2, the 4-di-tert-butyl-phenyl) tris phosphite.
6. polyethylene compsn according to claim 1 is characterized in that: described weighting agent is nano layered silicate, nano titanium oxide, nano silicon oxide, nano-aluminium oxide or nanometer B
2O
3P
2O
5Crystal.
7. a method for preparing the described polyethylene compsn of claim 1 is characterized in that: described polyethylene powder or pellet, oxidation inhibitor, halogen-absorber and weighting agent are mixed, thereby obtain described polyethylene mixture; The melt-blending process of said mixture through routine carried out melting mixing, cooling, discharging, promptly get polyethylene compsn.
8. a method for preparing the described polyethylene compsn of claim 1 is characterized in that: a small amount of Vilaterm basis resin and described oxidation inhibitor, halogen-absorber and weighting agent are carried out mixing granulation, make aid master batches; After according to proportioning said aid master batches and polyethylene pellet being carried out blending then, thereby obtain described polyethylene mixture; The melt-blending process of said mixture through routine carried out melting mixing, cooling, discharging, promptly get polyethylene compsn.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103554620A (en) * | 2013-10-31 | 2014-02-05 | 合肥得润电子器件有限公司 | Dampproof polyethylene insulating material for wire harness of communication equipment |
| CN103804745A (en) * | 2012-11-14 | 2014-05-21 | 中国石油天然气股份有限公司 | Polyethylene resin composition with improved appearance and odor |
| CN106336559A (en) * | 2015-08-10 | 2017-01-18 | 中国石油化工股份有限公司 | Modified high-density polyethylene resin used for large hollow blow molding, and production method of resin |
| CN106543548A (en) * | 2016-10-20 | 2017-03-29 | 中国石油化工股份有限公司 | Medium-sized hollow container blowing high-density polyethylene resin and preparation method thereof |
| CN106543547A (en) * | 2016-10-20 | 2017-03-29 | 中国石油化工股份有限公司 | A kind of little hollow blow molding modification high-density polyethylene resin and preparation method thereof of easy processing food-grade |
| CN108727660A (en) * | 2017-04-20 | 2018-11-02 | 中国石化扬子石油化工有限公司 | A kind of preparation method of low smell polyethylene composition |
| CN109575394A (en) * | 2017-09-28 | 2019-04-05 | 中国石化扬子石油化工有限公司 | A kind of tubing polyethylene composition and preparation method thereof that yellow colour index improves |
| CN114426725A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Linear low-density polyethylene composition and preparation method thereof |
| CN115521530A (en) * | 2021-06-25 | 2022-12-27 | 中国石油化工股份有限公司 | High-density polyethylene resin composition and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103804745A (en) * | 2012-11-14 | 2014-05-21 | 中国石油天然气股份有限公司 | Polyethylene resin composition with improved appearance and odor |
| CN103554620A (en) * | 2013-10-31 | 2014-02-05 | 合肥得润电子器件有限公司 | Dampproof polyethylene insulating material for wire harness of communication equipment |
| CN106336559A (en) * | 2015-08-10 | 2017-01-18 | 中国石油化工股份有限公司 | Modified high-density polyethylene resin used for large hollow blow molding, and production method of resin |
| CN106543548A (en) * | 2016-10-20 | 2017-03-29 | 中国石油化工股份有限公司 | Medium-sized hollow container blowing high-density polyethylene resin and preparation method thereof |
| CN106543547A (en) * | 2016-10-20 | 2017-03-29 | 中国石油化工股份有限公司 | A kind of little hollow blow molding modification high-density polyethylene resin and preparation method thereof of easy processing food-grade |
| CN106543548B (en) * | 2016-10-20 | 2019-07-12 | 中国石油化工股份有限公司 | Medium-sized hollow container blow molding high-density polyethylene resin and preparation method thereof |
| CN108727660A (en) * | 2017-04-20 | 2018-11-02 | 中国石化扬子石油化工有限公司 | A kind of preparation method of low smell polyethylene composition |
| CN109575394A (en) * | 2017-09-28 | 2019-04-05 | 中国石化扬子石油化工有限公司 | A kind of tubing polyethylene composition and preparation method thereof that yellow colour index improves |
| CN114426725A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Linear low-density polyethylene composition and preparation method thereof |
| CN115521530A (en) * | 2021-06-25 | 2022-12-27 | 中国石油化工股份有限公司 | High-density polyethylene resin composition and preparation method thereof |
| CN115521530B (en) * | 2021-06-25 | 2023-08-11 | 中国石油化工股份有限公司 | High-density polyethylene resin composition and preparation method thereof |
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