CN1293139C - Polyethylene in super molecular weight modified by Nano silicon rubber its prepn. provess and usage - Google Patents
Polyethylene in super molecular weight modified by Nano silicon rubber its prepn. provess and usage Download PDFInfo
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- CN1293139C CN1293139C CNB2004100090771A CN200410009077A CN1293139C CN 1293139 C CN1293139 C CN 1293139C CN B2004100090771 A CNB2004100090771 A CN B2004100090771A CN 200410009077 A CN200410009077 A CN 200410009077A CN 1293139 C CN1293139 C CN 1293139C
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Abstract
The present invention belongs to the field of polymer modification, which particularly relates to silicon rubber modified ultrahigh molecular weight polyethylene, a preparation method thereof and an application of the silicon rubber modified ultrahigh molecular weight polyethylene in wear resistant pipes. The silicon rubber modified ultrahigh molecular weight polyethylene is prepared from 80 to 99 wt% of ultrahigh molecular weight polyethylene, 0.1 to 15 wt% of nanometer silicon rubber, 0.01 to 5 wt% of lubricant, 0.01 to 5 wt% of processing rheological additives and 0.01 to 5 wt% of nucleating agents. The ultrahigh molecular weight polyethylene, the nucleating agents, the lubricant, the processing rheological additives and 1 to 5 wt% of the total weight of the formula of antioxidant are mixed and stirred in a high-speed stirrer; then, the silicon rubber with the grain diameter of 20 to 100 nm is added and stirred; materials homogeneously mixed are added into a twin-screw extruder, blended and granulated. The temperature of the front section of a screw cylinder is from 100 to 150 DEG C; the temperature of the middle section is from 150 to 180 DEG C; the temperature of the extruder head section is from 180 to 220 DEG C; the temperature of a die orifice is 200 DEG C.
Description
Technical field
The invention belongs to the polymer modification field, the application of particularly silicon rubber modified ultra-high molecular weight polyethylene and preparation method thereof, and silicon rubber modified ultra-high molecular weight polyethylene in wear-resistant tubing.
Background technology
Ultrahigh molecular weight polyethylene(UHMWPE) (UHMWPE) is the high thermoplastics of a kind of molecular weight, and " performance brilliance, processing difficulties " fully reflects the characteristics of this material.To compare the UHMWPE frictional coefficient little with numerous polymer materialss, wear away low, chemical-resistant resistance, shock-resistant, withstand voltage, freeze proof, heat retaining property, self lubricity, anti-fouling tendency, stress cracking resistance and wholesomeness etc. are good.These good characteristics are that UHMWPE tubing has important practical value.UHMWPE tubing has high self lubricity and anti-fouling tendency, can significantly reduce conveying energy consumption.The wear resistance of UHMWPE tubing is 5～7 times of other plastics, 7～10 times of steel pipe, and 27 times of brass are the ideal materials in wear resistant conveying pipe road.Compare with cross-linked polyethylene pipe, al-plastics composite pipe, press performance good in it is anti-, its anti-stress cracking is 200 times of high density polyethylene(HDPE), is 4 times of crosslinked polyethylene.
Ultrahigh molecular weight polyethylene(UHMWPE) (UHMWPE) is very long owing to its molecular chain, and entangled to each other, and melt viscosity is high, and flow rate is almost 0, and critical shear rate is very low, and melt fracture takes place easily, so process very difficulty continuously with conventional working method.Recent decades, the study on the modification from processing units to the UHMWPE raw and auxiliary material becomes the heat subject of material circle and industrial community always.How solving a UHMWPE processing difficult problem has effectively become the research topic of competitively assaulting fortified position in countries in the world, and lot of domestic and international expert, scholar have carried out a large amount of research to this.Except some make it to be fit to the processing UHMWPE to processing units research, main research is UHMWPE to be carried out modification make it to be fit to process with conventional equipment.Its modification method side comprises physics and chemical modification, and its main purpose is to promote that separating of long chain molecule twines, and reduces processing viscosity, and its modification difficult point is how to keep the performance of the excellence of UHMWPE when making UHMWPE have good processibility.Wherein more representational method is and polymer blending modification; Comprise with high density polyethylene(HDPE) (HDPE) and UHMWPE blending and modifying, as Japanese Patent JP6024078A, be that 70% UHMWPE and content are that 30% HDPE blend is extruded with mass content, product tensile strength is 39Mpa, the long rate in fracture Shen is 290%, mortar abrasion 81mg.And Japanese Patent JP6055042 is with 35%～65% UHMWPE and 65%～35% HDPE blend, with length-to-diameter ratio is 20, compression ratio is that 3: 1 single screw extrusion machine is extruded, processing conditions is screw speed 20r/ minute, 160 ℃～240 ℃ of processing temperatures, extrude the sheet material behind the 1mm smoothly, its wear resistance and UHMWPE are suitable.And with the processing characteristics of new LDPE (film grade) (LDPE) modification UHMWPE, but because the performance of LDPE causes the rerum natura of blend can descend obviously, and poly molecular weight is more little, proportion is big more in blend, and it and UHMWPE blend degradation are many more.For the mechanical property that makes the UHMWPE co-mixing system maintains higher level, generally add nucleator and compensate.As in the UHMWPE/LDPE co-mixing system, adding very a spot of tiny nucleator wollastonite (particle diameter 5 μ m～50 μ m, surface-area 100 μ m among the U.S. Pat P4281070
2～400 μ m
2), can compensate the reduction of mechanical property preferably.More than two kinds of methods all be to adopt to add the lower common polythene of a certain amount of molecular weight, though this can effectively improve the processing characteristics of UHMWPE, but owing to there is not effectively to solve the long molecular chain problem entangled to each other of UHMWPE, cause the long molecular rupture of UHMWPE in the course of processing, general end article molecular weight is lower than 500,000 mostly in addition.
Institute of Chemistry, Academia Sinica once used the silicate modified UHMWPE of nano level stratiform, utilize between layered silicate (comprising talcum, mica, kaolin, polynite, the layered zeolite etc.) lamella bonding force relatively a little less than, frictional coefficient is very little, utilize relatively sliding between the lamella can improve the flowability of UHMWPE melt, thereby improve its processing characteristics, and the lamella inner structure is tight, and rigidity is very high, and the performance to UHMWPE on two-dimensional directional has certain enhancement.But nano silicate is not easy the centrostigma that the dispersive shortcoming may cause stress, is unfavorable for the raising of material property.Simultaneously also be difficult to avoid in the course of processing, causing the long molecular rupture problem of UHMWPE.China Tsing-Hua University adopts LCP modification UHMWPE, but the abundant height-oriented arrangement of upright and outspoken macromole streamwise in the melt-processed process, can reach the effect that improves UHMWPE wear resistance and other mechanical property, the shortcoming of this method side be processing temperature up to 250～300 ℃, and cost height.
The another kind of modification method side of UHMWPE is lubricant modified, discloses a kind of multipolymer as U.S. Pat P4853427 and has cooperated as the UHMWPE lubricant with stearate and obtained good effect.U.S. Pat P4487857 discloses UHMWPE and complex flow modification co-mixing system, comprises that A is 5～10 parts of the saturated fatty alcohols of 15～30 carbon; B is a petroleum hydrocarbon cyclopentadiene resinoid, molecular weight 500～2000,70 ℃～130 ℃ of softening temperatures, 5～10 parts of consumptions; C is lower molecular weight PE10～15 part of molecular weight 1000～20000.The flow ability modifying agent total amount between 15～35 parts with the UHMWPE blend, can improve the processing characteristics of UHMWPE and can keep the fundamental property of UHMWPE.Though these class methods are owing to add that relatively large low molecule auxiliary agent makes the fundamental property that can keep UHMWPE in the end article substantially but the more real UHMWPE of performance such as its actual molecular weight, mechanical property, rub resistance have than big difference.
Summary of the invention
One of purpose of the present invention provides and a kind ofly can keep the original fundamental property of ultrahigh molecular weight polyethylene(UHMWPE), helps processing and the nano-silicon modified rubber ultrahigh molecular weight polyethylene(UHMWPE) that the long molecular chain of UHMWPE is ruptured in the course of processing again.
It is simple that a further object of the present invention provides processing conditions, and cost is low, do not destroy the preparation method of the nano-silicon modified rubber ultrahigh molecular weight polyethylene(UHMWPE) of ultrahigh molecular weight polyethylene(UHMWPE) excellent properties.
An also purpose of the present invention provides the purposes of nano-silicon modified rubber ultrahigh molecular weight polyethylene(UHMWPE).
The present invention adopts the rubber combined modifier modification ultrahigh molecular weight polyethylene(UHMWPE) of nano-silicon, the time and the pressure that increase the preceding mixing compression section of material fusion simultaneously fully are uniformly dispersed mixing of materials, guarantee that the rubber combined properties-correcting agent of nano-silicon disperses with nanoscale, and act synergistically with various processing aids.Because the small-size effect of the rubber combined properties-correcting agent of nano-silicon, obtain under the thorough mixing dispersive situation at material, making the long molecular chain of UHMWPE effectively separate when nearly fusing point twines, the significant temperature and time that reduces, processing viscosity obviously reduces (processing temperature is reduced to 170 ℃～220 ℃ by 250 ℃～260 ℃), avoid shear fracture and degradation simultaneously, guaranteed ultrahigh molecular weight polyethylene(UHMWPE) high molecular and excellent properties.
The component and the content of nano-silicon modified rubber ultrahigh molecular weight polyethylene(UHMWPE) of the present invention are as follows, by weight percentage:
Ultrahigh molecular weight polyethylene(UHMWPE) 80～99%
Nano-silicon rubber 0.1～15%
Lubricant 0.01～5%
Processing auxiliary rheological agents 0.01～5%
Nucleator 0.01～5%
The oxidation inhibitor that adds the 1～5wt ‰ of above-mentioned component gross weight again.
Ultrahigh molecular weight polyethylene(UHMWPE) of the present invention can be that molecular weight is 150～5,000,000 commercialization ultrahigh molecular weight polyethylene(UHMWPE).
The particle diameter of nano-silicon rubber of the present invention is a rice in 20～100.
Lubricant of the present invention can be stearic acid, stearate, fatty acid amide, petroleum resin, polyethylene wax or their any mixture etc.
Described stearate is calcium stearate, barium stearate, cadmium stearate, Zinic stearas, aluminum stearate, lead stearate or their any mixture etc.
Described fatty acid amide is stearic amide, methylene bis stearylamide, N, N-ethylene bis stearamide and oleylamide or their any mixture etc.
Processing auxiliary rheological agents of the present invention can be fluorine-containing silicone based polymkeric substance, as FX-5920A, FX-9613, FX-5912, the FX-9511 etc. of Minnesota Mining and Manufacturing Company.
Nucleator of the present invention can be: inorganic nucleator silicon-dioxide, titanium dioxide, calcium oxide, lime carbonate or mica etc., organic nucleating agent can be phosphate metal salt, carboxylic acid metal's salt (Sodium Benzoate, normal-butyl al formate) or two Bians fork glucitol derivative etc.
Described phosphate metal salt is 2, and 2 '-methylene radical-two (4,6-di-n-butyl phenol) (NA-11) etc.
Described two Bians fork glucitol derivative is two (to the benzyl chloride fork) sorbyl alcohol (DBS), two (to methyl Bian fork) sorbyl alcohol (CDBS), two pairs of second methyl Bian forks) sorbyl alcohol (MDBS), two (3,4-dimethyl Bian fork) sorbyl alcohol (DMDBS) etc.
Oxidation inhibitor of the present invention can be four [3-(3 ' 5-di-t-butyl, 4 '-hydroxy phenyl propionic acid) pentaerythritol esters (antioxidant 1010), 1,3,5-three (4 tertiary butyls-3-hydroxyl-2,6-dimethyl Bian Ji) 1,3,5-triazine-2,4,6-(1H, 3H, 5H)-triketone (oxidation inhibitor 1790), 2,2 ' methylene bis (4-methyl-6 tert.-butyl phenol) (antioxidant 2246), 4,4 '-methylene bis (4-methyl-6-tert butyl phenol) (oxidation inhibitor 702), 1,3,5-trimethylammonium-2,4,6 three (3,5-di-t-butyl-4-hydroxyl Bian Ji benzene) (antioxidant 330s).
The preparation method side of nano-silicon modified rubber ultrahigh molecular weight polyethylene(UHMWPE) of the present invention is as follows:
Fill a prescription according to following component and content:
Ultrahigh molecular weight polyethylene(UHMWPE) 80～99wt%
Nano-silicon rubber 0.1～15wt%
Lubricant 0.01～5wt%
Processing auxiliary rheological agents 0.01～5wt%
Nucleator 0.01～5wt%
With the molecular weight of 80～99wt% is 150～5,000,000 ultrahigh molecular weight polyethylene(UHMWPE), the nucleator of 0.01～5wt%, the lubricant of 0.01～5wt%, the processing auxiliary rheological agents of 0.01～5wt%, and the oxidation inhibitor of above-mentioned prescription gross weight 1～5wt ‰ mixes stirring 2～10 minutes in homogenizer, add the silicon rubber that particle diameter is 20～100nm again, stirred 1～3 minute; It is to carry out the blend granulation in 25～35 the twin screw extruder that the material that mixes is added length-to-diameter ratio, and barrel temperature leading portion is 100～150 ℃, and the stage casing is 150～180 ℃, and head section temperature is 180～220 ℃, and die temperature is 200 ℃.Conveying and the compression section that is material in the leading portion and the stage casing of screw rod wherein, this material obtains sufficient blending dispersion under higher temperature.Nano-silicon modified rubber ultra-high molecular weight polyethylene product is processed in method sides such as the nano-silicon modified rubber ultrahigh molecular weight polyethylene(UHMWPE) of this blend granulation can adopt and extrude, injection.
The tubing that adopts the nano-silicon modified rubber ultrahigh molecular weight polyethylene of the present invention's preparation to be equipped with, with the situation of ultrahigh molecular weight polyethylene(UHMWPE) same molecular amount under, basic identical with the ultrahigh molecular weight polyethylene tubing performance that adopts the sintering process preparation.
Nano-silicon modified rubber ultrahigh molecular weight polyethylene(UHMWPE) of the present invention can with commonly used extrude, injection device processes, and prepare that various high burn intos highly adhere to, the transport pipe of gas, liquid, meal or the solidliquid mixture of high wearing and tearing, and the lining etc. of making various mechanical component and various anticorrosion equipments.
The rubber combined modifier modification ultrahigh molecular weight polyethylene tubing of nano-silicon fundamental property
| Performance | Index |
| Density g/cm 3 | 0.938-0.950 |
| Tensile strength MPa | ＞24.0 |
| Impact (breach) intensity order KJ/M 223℃ | ＞120 |
| 16 hours abrasion % | ＜0.015 |
| 200 ℃ of oxidation induction periods divide | ＞20 |
| 100 hours 80 ℃ of 4.6MPa of permanent static pressure test room temperature 9 MPa 165 hours | Do not break, cannot not split brokenly, do not split |
| Hot texturing temperature (0.46MPa), ℃ | ≥80 |
| Molecular weight, * 10 4 | 150～550 |
Below in conjunction with embodiment technical scheme of the present invention is further described.
Embodiment
Embodiment 1.
Fill a prescription according to following component and content:
Ultrahigh molecular weight polyethylene(UHMWPE) (molecular weight 2,500,000) 95wt%
Nano-silicon rubber 3wt%
Calcium stearate 1wt%
FX-9511 0.5wt％
NA-11 0.5wt％
With the molecular weight of 95wt% the calcium stearate of NA-11,1wt% of 2,500,000 ultrahigh molecular weight polyethylene(UHMWPE), 0.5wt% and the poly alpha methylstyrene of 0.5wt%, and the antioxidant 1010 of above-mentioned prescription gross weight 2wt ‰ mixed in homogenizer 6 minutes, adding particle diameter again is the nano-silicon rubber of 50nm, stirs 2 minutes.It is to carry out the blend granulation in 30 the twin screw extruder that the material that mixes is added length-to-diameter ratio, and barrel temperature leading portion is 120～140 ℃, and the stage casing is 160～180 ℃, and head section temperature is 180～220 ℃, and die temperature is 200 ℃.Conveying and the compression section that is material in the leading portion and the stage casing of screw rod wherein, the rubber combined modifier modification ultrahigh molecular weight polyethylene(UHMWPE) of the nano-silicon of this blend granulation can be adopted and be extruded method for processing and be processed into the rubber combined modifier modification ultrahigh molecular weight polyethylene tubing of nano-silicon.Resulting ultrahigh molecular weight polyethylene tubing performance is, molecular weight 2,500,000, and 23 ℃ of notched Izod impact strength are 130KJ/M
2, abrasion loss 145 * 10 in 16 hours
-4G.
Embodiment 2.
Fill a prescription according to following component and content:
Ultrahigh molecular weight polyethylene(UHMWPE) (molecular weight 3,000,000) 92wt%
Nano-silicon rubber 3.5wt
Polyethylene wax (molecular weight 2000) 3wt%
FX5920 1wt％
DBS 0.5wt％
With the molecular weight of 92wt% the polyethylene wax (molecular weight 2000) of DBS, 3wt% of 3,000,000 ultrahigh molecular weight polyethylene(UHMWPE), 0.5wt% and the FX5920 of 1wt%, and the oxidation inhibitor 1790 of above-mentioned prescription gross weight 3wt ‰ mixed 8 minutes in homogenizer, adding particle diameter again is the nano-silicon rubber of 50nm, stirs 2 minutes.It is to carry out the blend granulation in 28 the twin screw extruder that the material that mixes is added length-to-diameter ratio, and barrel temperature leading portion is 130～150 ℃, and the stage casing is 170～180 ℃, and head section temperature is 180～220 ℃, and die temperature is 200 ℃.Conveying and the compression section that is material in the leading portion and the stage casing of screw rod wherein, the rubber combined modifier modification ultrahigh molecular weight polyethylene(UHMWPE) of the nano-silicon of this blend granulation can be adopted and be extruded method for processing and be processed into the rubber combined modifier modification high molecular weight polyethylene board material of nano-silicon.Resulting ultrahigh molecular weight polyethylene tubing performance is, molecular weight 3,000,000, and 23 ℃ of notched Izod impact strength are 135KJ/M
2, abrasion loss 148 * 10 in 16 hours
-4G.
Embodiment 3.
Fill a prescription according to following component and content:
Ultrahigh molecular weight polyethylene(UHMWPE) (molecular weight 2,000,000) 91wt%
Nano-silicon rubber 2wt%
Methylene bis stearylamide 5wt
FX9613 1.5wt％
DMDBS 0.5wt％
With the molecular weight of 91wt% the polyethylene wax (molecular weight 2000) of DMDBS, 5wt% of 1,500,000 ultrahigh molecular weight polyethylene(UHMWPE), 0.5wt% and the FX5920 of 1.5wt%, and the antioxidant 2246 of above-mentioned prescription gross weight 2wt ‰ mixed in homogenizer 5 minutes, adding particle diameter again is the nano-silicon rubber of 50nm, stirs 1 minute.It is to carry out the blend granulation in 35 the twin screw extruder that the material that mixes is added length-to-diameter ratio, and barrel temperature leading portion is 110～130 ℃, and the stage casing is 150～160 ℃, and head section temperature is 180～200 ℃, and die temperature is 200 ℃.Conveying and the compression section that is material in the leading portion and the stage casing of screw rod wherein, the rubber combined modifier modification ultrahigh molecular weight polyethylene(UHMWPE) of the nano-silicon of this blend granulation can adopt injection molding method for processing to be processed into the rubber combined modifier modification ultra-high molecular weight polyethylene product of nano-silicon.Resulting ultra-high molecular weight polyethylene product performance is, molecular weight 1,500,000, and 23 ℃ of notched Izod impact strength are 120KJ/M
2, abrasion loss 140 * 10 in 16 hours
-4G.
Embodiment 4
Fill a prescription according to following component and content:
Ultrahigh molecular weight polyethylene(UHMWPE) (molecular weight 2,000,000) 85wt%
Nano-silicon rubber 5wt%
Polyethylene wax (molecular weight 1500) 5wt%
FX5912 2wt％
Silicon-dioxide (3000 order) 3wt%
With the molecular weight of 85wt% is 2,000,000 ultrahigh molecular weight polyethylene(UHMWPE), the silicon-dioxide of 3wt%, the polyethylene wax (molecular weight 2000) of 5wt% and the FX5920 of 2wt%, and the antioxidant 1010 of above-mentioned prescription gross weight 2.5wt ‰ mixed in homogenizer 5 minutes, adding particle diameter again is the nano-silicon rubber of 50nm, stirs 1 minute.It is to carry out the blend granulation in 35 the twin screw extruder that the material that mixes is added length-to-diameter ratio, and barrel temperature leading portion is 110～130 ℃, and the stage casing is 150～160 ℃, and head section temperature is 180～200 ℃, and die temperature is 200 ℃.Conveying and the compression section that is material in the leading portion and the stage casing of screw rod wherein, the rubber combined modifier modification ultrahigh molecular weight polyethylene(UHMWPE) of the nano-silicon of this blend granulation can adopt injection molding method for processing to be processed into the rubber combined modifier modification ultra-high molecular weight polyethylene product of nano-silicon.Resulting ultra-high molecular weight polyethylene product performance is, molecular weight 2,000,000, and 23 ℃ of notched Izod impact strength are 120KJ/M
2, abrasion loss 142 * 10 in 16 hours
-4G.
Embodiment 5.
Fill a prescription according to following component and content:
Ultrahigh molecular weight polyethylene(UHMWPE) (molecular weight 2,500,000) 97.5wt%
Nano-silicon rubber 1wt%
Calcium stearate 0.2wt%
Aluminum stearate 0.3wt%
FX-9511 0.7wt％
Normal-butyl al formate 0.3wt%
With the molecular weight of 97.5wt% is calcium stearate, the aluminum stearate of 0.3wt% and the FX-9511 of 0.7wt% of NA-11, the 0.2wt% of 2,500,000 ultrahigh molecular weight polyethylene(UHMWPE), 0.5wt%, and the antioxidant 1010 of above-mentioned prescription gross weight 2wt ‰ mixed in homogenizer 4 minutes, adding particle diameter again is the nano-silicon rubber of 50nm, stirs 2 minutes.It is to carry out the blend granulation in 30 the twin screw extruder that the material that mixes is added length-to-diameter ratio, and barrel temperature leading portion is 120～140 ℃, and the stage casing is 160～180 ℃, and head section temperature is 180～220 ℃, and die temperature is 200 ℃.Conveying and the compression section that is material in the leading portion and the stage casing of screw rod wherein, the rubber combined modifier modification ultrahigh molecular weight polyethylene(UHMWPE) of the nano-silicon of this blend granulation can be adopted and be extruded method for processing and be processed into the rubber combined modifier modification ultrahigh molecular weight polyethylene tubing of nano-silicon.Resulting ultrahigh molecular weight polyethylene tubing performance is, molecular weight 2,500,000, and 23 ℃ of notched Izod impact strength are 135KJ/M
2, abrasion loss 148 * 10 in 16 hours
-4G.
Embodiment 6
Fill a prescription according to following component and content:
Ultrahigh molecular weight polyethylene(UHMWPE) (molecular weight 3,500,000) 82wt%
Nano-silicon rubber 6wt%
Polyethylene wax (molecular weight 2500) 4wt
Stearic amide 1wt
FX5912 2wt
Silicon-dioxide (3000 order) 5wt%
With the molecular weight of 82wt% the FX5920 of polyethylene wax (molecular weight 2500), 1wt% stearic amide and 2wt% of silicon-dioxide, the 4wt% of 3,500,000 ultrahigh molecular weight polyethylene(UHMWPE), 5wt%, and the antioxidant 330 of above-mentioned prescription gross weight 2.5wt ‰ mixed in homogenizer 5 minutes, adding particle diameter again is the nano-silicon rubber of 50nm, stirs 1 minute.It is to carry out the blend granulation in 35 the twin screw extruder that the material that mixes is added length-to-diameter ratio, and barrel temperature leading portion is 110～130 ℃, and the stage casing is 150～160 ℃, and head section temperature is 180～200 ℃, and die temperature is 200 ℃.Conveying and the compression section that is material in the leading portion and the stage casing of screw rod wherein, the rubber combined modifier modification ultrahigh molecular weight polyethylene(UHMWPE) of the nano-silicon of this blend granulation can adopt injection molding method for processing to be processed into the rubber combined modifier modification ultra-high molecular weight polyethylene product of nano-silicon.Resulting ultra-high molecular weight polyethylene product performance is, molecular weight 3,000,000, and 23 ℃ of notched Izod impact strength are 125KJ/M
2, abrasion loss 141 * 10 in 16 hours
-4G.
Claims (9)
1. nano-silicon modified rubber ultrahigh molecular weight polyethylene(UHMWPE), it is characterized in that: the component and the content of described nano-silicon modified rubber ultrahigh molecular weight polyethylene(UHMWPE) are:
Ultrahigh molecular weight polyethylene(UHMWPE) 80～99wt%
Nano-silicon rubber 0.1～15wt%
Lubricant 0.01～5wt%
Processing auxiliary rheological agents 0.01～5wt%
Nucleator 0.01～5wt%
The oxidation inhibitor that adds the 1～5wt ‰ of above-mentioned component gross weight again;
Described lubricant is stearic acid, stearate, fatty acid amide, petroleum resin, polyethylene wax or their any mixture;
Described processing auxiliary rheological agents is fluorine-containing silicone based polymkeric substance;
Described nucleator is silicon-dioxide, titanium dioxide, calcium oxide, lime carbonate, mica, phosphate metal salt, carboxylic acid metal's salt or two Bians fork glucitol derivative.
2. polyethylene according to claim 1 is characterized in that: the molecular weight of described ultrahigh molecular weight polyethylene(UHMWPE) is 150～5,000,000.
3. polyethylene according to claim 1 is characterized in that: the particle diameter of described nano-silicon rubber is a rice in 20～100.
4. polyethylene according to claim 1 is characterized in that: described stearate is calcium stearate, barium stearate, cadmium stearate, Zinic stearas, aluminum stearate, lead stearate or their any mixture;
Described fatty acid amide is stearic amide, methylene bis stearylamide, N, N-ethylene bis stearamide, oleylamide or their any mixture.
5. polyethylene according to claim 1 is characterized in that: described phosphate metal salt is 2,2 '-methylene radical-two (4,6-di-n-butyl phenol); Described carboxylic acid metal's salt is Sodium Benzoate or normal-butyl al formate; Described two Bians fork glucitol derivative is two (to the benzyl chloride fork) sorbyl alcohol, two (to methyl Bian fork) sorbyl alcohol, two pairs of second methyl Bian forks) sorbyl alcohol or two (3,4-dimethyl Bian fork) sorbyl alcohol.
6. polyethylene according to claim 1 is characterized in that: described oxidation inhibitor is four [3-(3 ' 5-di-t-butyl, 4 '-hydroxy phenyl propionic acid) pentaerythritol esters, 1,3,5-three (4 tertiary butyls-3-hydroxyl-2,6-dimethyl Bian Ji) 1,3,5-triazine-2,4,6-(1H, 3H, 5H)-triketone, 2,2 ' methylene bis (4-methyl-6 tert.-butyl phenol), 4,4 '-methylene bis (4-methyl-6-tert butyl phenol) or 1,3,5-trimethylammonium-2,4,6 three (3,5-di-t-butyl-4-hydroxyl Bian Ji benzene).
7. preparation method according to each described nano-silicon modified rubber ultrahigh molecular weight polyethylene(UHMWPE) of claim 1～6 is characterized in that: fill a prescription according to following component and content:
Ultrahigh molecular weight polyethylene(UHMWPE) 80～99wt%
Nano-silicon rubber 0.1～15wt%
Lubricant 0.01～5wt%
Processing auxiliary rheological agents 0.01～5wt%
Nucleator 0.01～5wt%
With the molecular weight of 80～99wt% is 150～5,000,000 ultrahigh molecular weight polyethylene(UHMWPE), the nucleator of 0.01～5wt%, the lubricant of 0.01～5wt%, the processing auxiliary rheological agents of 0.01～5wt%, and the oxidation inhibitor of the 1～5wt ‰ of above-mentioned prescription gross weight mixes stirring in homogenizer, add the silicon rubber that particle diameter is 20～100nm again, stir; To carry out the blend granulation in the material adding twin screw extruder that mix, barrel temperature leading portion is 100～150 ℃, and the stage casing is 150～180 ℃, and head section temperature is 180～220 ℃, and die temperature is 200 ℃;
Described lubricant is stearic acid, stearate, fatty acid amide, petroleum resin, polyethylene wax or their any mixture;
Described processing auxiliary rheological agents is fluorine-containing silicone based polymkeric substance;
Described nucleator is silicon-dioxide, titanium dioxide, calcium oxide, lime carbonate, mica, phosphate metal salt, carboxylic acid metal's salt or two Bians fork glucitol derivative.
8. method according to claim 7 is characterized in that: the length-to-diameter ratio of described twin screw extruder is 25～35.
9. purposes according to each described nano-silicon modified rubber ultrahigh molecular weight polyethylene(UHMWPE) of claim 1～6, it is characterized in that: described nano-silicon modified rubber ultrahigh molecular weight polyethylene(UHMWPE) is used to prepare the transport pipe of the high adhesion of high burn into, high gas, liquid, meal or the solidliquid mixture that weares and teares, and the lining of manufacturing machine part and anticorrosion equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100090771A CN1293139C (en) | 2004-05-11 | 2004-05-11 | Polyethylene in super molecular weight modified by Nano silicon rubber its prepn. provess and usage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100090771A CN1293139C (en) | 2004-05-11 | 2004-05-11 | Polyethylene in super molecular weight modified by Nano silicon rubber its prepn. provess and usage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1696185A CN1696185A (en) | 2005-11-16 |
| CN1293139C true CN1293139C (en) | 2007-01-03 |
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| CNB2004100090771A Expired - Fee Related CN1293139C (en) | 2004-05-11 | 2004-05-11 | Polyethylene in super molecular weight modified by Nano silicon rubber its prepn. provess and usage |
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| CN100378157C (en) * | 2006-02-28 | 2008-04-02 | 武东生 | Super macromolecular composite lining plate and method for preparing same |
| CN101070363B (en) * | 2006-05-12 | 2010-08-04 | 贵州省材料技术创新基地 | Process for preparing transparent polypropylene |
| EP2507303B1 (en) * | 2009-12-02 | 2013-11-20 | Saudi Basic Industries Corporation | Ultra high molecular weight polyethylene powder composition |
| CN101974177B (en) * | 2010-11-02 | 2012-07-04 | 徐州百安居建材科技有限公司 | Multi-functional polyethylene tube and manufacturing method thereof |
| CN102746563B (en) * | 2011-04-22 | 2014-06-04 | 中国石油天然气股份有限公司 | Preparation method for special-purpose material of LLDPE transparent shed film |
| CN102649848B (en) * | 2011-08-16 | 2014-04-02 | 上海公元建材发展有限公司 | Toughness-improved HDPE (High-Density Polyethylene) trenchless tubular product |
| CN103059382A (en) * | 2013-01-16 | 2013-04-24 | 上海伟星新型建材有限公司 | Method for preparing high-performance irradiation cross-linking ultrahigh polyethylene extrusion plate |
| CN105399986B (en) * | 2014-08-27 | 2018-08-17 | 中国石油化工股份有限公司 | Rubber processing aids composition and rubber processing aids and their applications and rubber processing method in rubber processing |
| CN105585793B (en) * | 2014-10-21 | 2017-12-19 | 中国石油化工股份有限公司 | A kind of PVC mixture with clean surfaces function and preparation method thereof |
| CN106989980A (en) * | 2017-04-22 | 2017-07-28 | 福建师范大学 | A kind of method of promotion made polymer disentanglement |
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| JP2000007848A (en) * | 1998-06-26 | 2000-01-11 | Nippon Unicar Co Ltd | Polyolefin resin composition |
| JP2001135145A (en) * | 1999-11-04 | 2001-05-18 | Nippon Unicar Co Ltd | Foamable resin composition for producing highly foamed polyethylene coated wire in inert gas foaming method and highly foamed insulated polyethylene coated wire formed by coating the same |
| CN1401691A (en) * | 2002-09-24 | 2003-03-12 | 张万喜 | Nanopowder composite polymer memory material |
| CN1470556A (en) * | 2002-06-27 | 2004-01-28 | �Ϻ���ͨ��ѧ | Method for continuous preparation of two-component addition crosslinked silicone composition |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000007848A (en) * | 1998-06-26 | 2000-01-11 | Nippon Unicar Co Ltd | Polyolefin resin composition |
| JP2001135145A (en) * | 1999-11-04 | 2001-05-18 | Nippon Unicar Co Ltd | Foamable resin composition for producing highly foamed polyethylene coated wire in inert gas foaming method and highly foamed insulated polyethylene coated wire formed by coating the same |
| CN1470556A (en) * | 2002-06-27 | 2004-01-28 | �Ϻ���ͨ��ѧ | Method for continuous preparation of two-component addition crosslinked silicone composition |
| CN1401691A (en) * | 2002-09-24 | 2003-03-12 | 张万喜 | Nanopowder composite polymer memory material |
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