CN101985501A - Method for preparing extrusion-grade ultrahigh molecular weight polyethylene-high density polyethylene-attapulgite pregel composite material - Google Patents
Method for preparing extrusion-grade ultrahigh molecular weight polyethylene-high density polyethylene-attapulgite pregel composite material Download PDFInfo
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- CN101985501A CN101985501A CN2010105197501A CN201010519750A CN101985501A CN 101985501 A CN101985501 A CN 101985501A CN 2010105197501 A CN2010105197501 A CN 2010105197501A CN 201010519750 A CN201010519750 A CN 201010519750A CN 101985501 A CN101985501 A CN 101985501A
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Abstract
The invention discloses a method for preparing an extrusion-grade ultrahigh molecular weight polyethylene-high density polyethylene-attapulgite pregel composite material. The method comprises the following steps: adding 15-10 parts by weight of high density polyethylene, 1-10 parts by weight of attapulgite pregel, 0.5-30 parts by weight of flow modifier and 0.1-1 part by weight of antioxygen into 85-90 parts by weight of ultrahigh molecular weight polyethylene, mixing at the temperature of 20-30 DEG C at a high speed, feeding the mixture in a double-screw extruder at the extrusion temperature of 180-240 DEGC, and extruding and pelletizing to obtain the extrusion-grade ultrahigh molecular weight polyethylene special material which has the characteristic of excellent mechanical performance, and can meet requirements of certain occasions and special products.
Description
Technical field
The present invention relates to the preparation method of a kind of extrusion grade ultrahigh molecular weight polyethylene(UHMWPE)/high density polyethylene(HDPE)/attapulgite pre-gelled matrix material, belong to polymer processing field.
Background technology
Ultrahigh molecular weight polyethylene(UHMWPE) (UHMWPE) is because shock resistance (shock resistance occupies first of the plastics) is strong, good corrosion resistance, the excellent demolding performace that chemical resistance, density are low, frictional coefficient is low, superior, extremely low water-intake rate, fabulous electrical insulating property and static resistance, moderate physical strength, inflexible creep resistance, excellent machining property, self-lubricating property, resistive connection dirt performance, good anti-energy-rich radiation performance, by laudatory title is " amazing plastics ", and its over-all properties surpasses " plastics king " tetrafluoroethylene.These good characteristics make ultrahigh molecular weight polyethylene(UHMWPE) have important practical value, being widely used in fields such as oil-gas gathering and transportation, petrochemical complex, electric power, mine, food-processing, urban construction, weaving, papermaking, transportation, medical treatment, is the leading product of futurity industry tubing.Though ultrahigh molecular weight polyethylene(UHMWPE) has the characteristic of many excellences, but many deficiencies are arranged also, because its high molecular weight, the random entanglement of macromole interchain makes it to the thermal motion delay of response, show as melt flow rate (MFR) (MFR) extremely low (approach zero, viscosity is high when fusing point high (190-210 ℃), fusion, melt viscosity is up to 1 * 10
8Pa/s, critical shear rate are low, and melt fracture, extremely difficult machine-shaping etc. easily take place.Compare with other engineering plastics in addition, have that surface hardness is low, heat-drawn wire is low, flexural strength and creep resistant be relatively poor, shortcoming such as antiwear property is poor, intensity is low has influenced its result of use and range of application.Recent decades, transform the heat subject that the raw-material study on the modification of ultrahigh molecular weight polyethylene(UHMWPE) becomes plastics circle and industrial community always from processing units.
Chinese patent 98100960.3 selects for use main chain polyester type liquid crystal polymer that ultra-high molecular weight is carried out modification, improved the flowability of ultrahigh molecular weight polyethylene(UHMWPE) greatly, prepared and to be used to the ultrahigh molecular weight polyethylene(UHMWPE) PP Pipe Compound of extruding and injecting, but, seriously limited its application and popularization in industry because liquid crystal polymer costs an arm and a leg.
U.S. Pat 4853427, Japanese Patent JP6042078 are with ultrahigh molecular weight polyethylene(UHMWPE) and middle low molecular weight polyethylene blending and modifying, though the flowing property of mixture improves, but have only the low molecular weight polyethylene add-on just can make it be used to extrude and injection moulding in time more than 30 parts, this makes the performance of ultrahigh molecular weight polyethylene(UHMWPE) decline to a great extent.
Chinese patent 01100116.3 has been reported the technology of organic clay modified ultra-high molecular weight polyethylene, its layered silicate with polynite mixes with ultrahigh molecular weight polyethylene(UHMWPE) through the situ-formed graft intercalation, made extruding-injection class super-high molecular weight polyethylene PP Pipe Compound, but when flowability is improved, along with the increase of layered silicate add-on, make the good toughness of ultrahigh molecular weight (UHMW) polyethylene descend obviously.
Chinese patent 200710049024.6 through extruding pelletization, has made ultrahigh molecular weight polyethylene(UHMWPE) and polypropylene, organic clay extrusion grade ultrahigh molecular weight polyethylene(UHMWPE) PP Pipe Compound, and can significantly improve the toughness of compound system.But polypropylene and ultrahigh molecular weight polyethylene(UHMWPE) are typical incompatible system, and the difficulty that makes compound system mix increases, and to having relatively high expectations of processor, need carry out scrap build to forcing machine.
Summary of the invention
The objective of the invention is at the deficiency of modified with ultrahigh molecular weight polyethylene technology and a kind of ultrahigh molecular weight polyethylene(UHMWPE)/high density polyethylene(HDPE) that can be used for extruding/attapulgite pre-gelled matrix material and preparation method thereof is provided, its comprehensive mechanical performance can compare favourably with pure ultra-high molecular mass polyethylene, can satisfy the needs of some special occasions and particular product.
Ultrahigh molecular weight polyethylene(UHMWPE)/high density polyethylene(HDPE) of the present invention/attapulgite pre-gelled matrix material comprises each component, and its consumption is weight fraction.
Ultrahigh molecular weight polyethylene(UHMWPE) 85-90
High density polyethylene(HDPE) 15-10
Attapulgite pre-gelled 1-10
Flow ability modifying agent 0.5-30
Oxidation inhibitor 0.1-1
Wherein the molecular weight of ultrahigh molecular weight polyethylene(UHMWPE) is 100-500 ten thousand, and high density polyethylene(HDPE) is that molecular-weight average is 4-30 ten thousand, and its molecular weight distribution irregularity index (HI) is 4-30.
Flow ability modifying agent comprises a kind of or its mixture in powder coal ash glass-microballons, silicon-dioxide, aluminium sesquioxide, polyoxyethylene glycol, silicone oil, hydrogenated petroleum resin, paraffin, the stearic amide.
Oxidation inhibitor comprises and is a kind of or its mixture in antioxidant CA, antioxidant 1010, the antioxidant BHT.
Attapulgite in the attapulgite pre-gelled wherein contains Attapulgite content and is about 30-90% for the attapulgite clay that revive area, Anhui or Linze, Gansu produce, and polynite content is 10-60%, and particle diameter is the 200-300 order.
Solvent in the attapulgite pre-gelled is a kind of or mixed solvent in white oil, dimethylbenzene, 6# solvent oil, 120# solvent oil, the acetone.
The preparation method of extrusion grade ultrahigh molecular weight polyethylene(UHMWPE)/high density polyethylene(HDPE)/attapulgite pre-gelled matrix material may further comprise the steps:
(1) preparation of attapulgite pre-gelled: at room temperature, attapulgite clay is mixed with the ratio of solvent according to certainweight, high-speed stirring makes the attapulgite pre-gelled.
(2) under temperature 25-30 ℃, with ultrahigh molecular weight polyethylene(UHMWPE), high density polyethylene(HDPE), attapulgite pre-gelled, flow ability modifying agent, oxidation inhibitor high-speed mixing in super mixer.
(3) with in the mixture feeding twin screw extruder that makes in (2) step, extrusion temperature is 180-240 ℃, and extruding pelletization has made extrusion grade ultrahigh molecular weight polyethylene(UHMWPE)/high density polyethylene(HDPE)/attapulgite pre-gelled matrix material.
The present invention has the following advantages:
1, the ultra-high molecular weight polyethylene composite material that makes of the present invention has good flowing property, and the melt viscosity of matrix material significantly reduces, and critical shear rate significantly improves, and can be used for twin screw and extrude.
2, the ultra-high molecular weight polyethylene composite material that makes of the present invention has the excellent comprehensive performance, can compare favourably excellent performances such as the tensile strength of matrix material, shock strength, wear resisting property, heat-drawn wire with pure ultra-high molecular mass polyethylene.
3, the attapulgite pre-gelled preparation technology of this invention employing is simple, improved the comprehensive mechanical performance of matrix material, and montmorillonite layered silicate wherein can play macromole and separates the effect that twines agent, improved the flowing property of ultrahigh molecular weight polyethylene(UHMWPE), inorganic nano-particle wherein also plays the effect of nucleator.
Embodiment
Below by embodiment the present invention is further described, but can not be interpreted as limiting the scope of the invention, each component concentration of embodiment is weight fraction.
Embodiment 1: at room temperature attapulgite clay and dimethylbenzene are added in high speed agitator according to weight ratio at 1: 1, high-speed stirring 10 minutes has made the attapulgite pre-gelled; With 90 parts molecular-weight average is that the ultrahigh molecular weight polyethylene(UHMWPE) of 100-500 ten thousand, 10 parts molecular-weight average are that the high density polyethylene(HDPE) of 4-30 ten thousand, 3 parts attapulgite pre-gelled, 20 parts powder coal ash glass-microballons, 0.3 part antioxidant 1010 at room temperature stirred 10 minutes in the super mixer high speed, extruding pelletization on the all-purpose double-screw forcing machine, extrusion temperature are 180-240 ℃.Test result is shown in Table 1.
Embodiment 2: at room temperature attapulgite clay and acetone are added in high speed agitator according to weight ratio at 1: 1, high-speed stirring 10 minutes has made the attapulgite pre-gelled; With 85 parts molecular-weight average is that the ultrahigh molecular weight polyethylene(UHMWPE) of 100-500 ten thousand, 15 parts molecular-weight average are that the high density polyethylene(HDPE) of 4-30 ten thousand, 6 parts attapulgite pre-gelled, 10 parts powder coal ash glass-microballons, 10 parts of whiterusss, 0.3 part antioxidant 1010 at room temperature stirred 10 minutes in the super mixer high speed, extruding pelletization on the all-purpose double-screw forcing machine, extrusion temperature are 180-240 ℃.Test result is shown in Table 1.
Embodiment 3: at room temperature attapulgite clay and 120# solvent oil are added in high speed agitator according to weight ratio at 1: 1, high-speed stirring 10 minutes has made the attapulgite pre-gelled; With 85 parts molecular-weight average is that the ultrahigh molecular weight polyethylene(UHMWPE) of 100-500 ten thousand, 15 parts molecular-weight average are that the high density polyethylene(HDPE) of 4-30 ten thousand, 3 parts attapulgite pre-gelled, 20 parts powder coal ash glass-microballons, 0.3 part antioxidant 1010 at room temperature stirred 10 minutes in the super mixer high speed, extruding pelletization on the all-purpose double-screw forcing machine, extrusion temperature are 180-240 ℃.Test result is shown in Table 1.
Comparative Examples 1: with 90 parts molecular-weight average be the ultrahigh molecular weight polyethylene(UHMWPE) of 100-500 ten thousand, 10 parts molecular-weight average be 4-30 ten thousand high density polyethylene(HDPE),, 20 parts powder coal ash glass-microballons, 0.3 part antioxidant 1010 at room temperature stirred 10 minutes in the super mixer high speed, extruding pelletization on the all-purpose double-screw forcing machine, extrusion temperature are 180-240 ℃.Test result is shown in Table 1.
Comparative Examples 2: with 85 parts molecular-weight average be the ultrahigh molecular weight polyethylene(UHMWPE) of 100-500 ten thousand, 15 parts molecular-weight average be 4-30 ten thousand high density polyethylene(HDPE),, 20 parts powder coal ash glass-microballons, 0.3 part antioxidant 1010 at room temperature stirred 10 minutes in the super mixer high speed, extruding pelletization on the all-purpose double-screw forcing machine, extrusion temperature are 180-240 ℃.Test result is shown in Table 1.
Table 1
Claims (9)
1. extrusion grade ultrahigh molecular weight polyethylene(UHMWPE)/high density polyethylene(HDPE)/attapulgite pre-gelled matrix material, the composition of this matrix material comprises following each component, following each amounts of components is parts by weight:
Ultrahigh molecular weight polyethylene(UHMWPE) 85-90
High density polyethylene(HDPE) 15-10
Attapulgite pre-gelled 1-10
Flow ability modifying agent 0.5-30
Oxidation inhibitor 0.1-1
2. extrusion grade ultrahigh molecular weight polyethylene(UHMWPE)/high density polyethylene(HDPE) as claimed in claim 1/attapulgite pre-gelled matrix material, the molecular-weight average that it is characterized in that described ultrahigh molecular weight polyethylene(UHMWPE) is 100-500 ten thousand.
3. extrusion grade ultrahigh molecular weight polyethylene(UHMWPE)/high density polyethylene(HDPE) as claimed in claim 1/attapulgite pre-gelled matrix material is characterized in that described high density polyethylene(HDPE) is that molecular-weight average is 4-30 ten thousand.
4. extrusion grade ultrahigh molecular weight polyethylene(UHMWPE)/high density polyethylene(HDPE) as claimed in claim 1/attapulgite pre-gelled matrix material, the preparation method who it is characterized in that described attapulgite pre-gelled is: attapulgite clay is at room temperature mixed according to certain weight ratio with solvent, and high-speed stirring makes the abundant swelling of attapulgite form the attapulgite pre-gelled.
5. extrusion grade ultrahigh molecular weight polyethylene(UHMWPE)/high density polyethylene(HDPE) as claimed in claim 1/attapulgite pre-gelled matrix material is characterized in that described flow ability modifying agent comprises a kind of or its mixture in powder coal ash glass-microballons, silicon-dioxide, aluminium sesquioxide, polyoxyethylene glycol, silicone oil, hydrogenated petroleum resin, paraffin, the stearic amide.
6. extrusion grade ultrahigh molecular weight polyethylene(UHMWPE)/high density polyethylene(HDPE) as claimed in claim 1/attapulgite pre-gelled matrix material is characterized in that described oxidation inhibitor comprises: antioxidant CA, antioxidant 1010, antioxidant BHT.
7. attapulgite pre-gelled as claimed in claim 4, it is characterized in that the attapulgite clay that described attapulgite is produced for revive area, Anhui or Linze, Gansu, wherein contain Attapulgite content and be about 30-90%, polynite content is 10-60%, and particle diameter is the 200-300 order.
8. attapulgite pre-gelled as claimed in claim 4 is characterized in that described solvent is a kind of or mixed solvent in white oil, dimethylbenzene, 6# solvent oil, 120# solvent oil, the acetone.
9. the preparation method of extrusion grade ultrahigh molecular weight polyethylene(UHMWPE)/high density polyethylene(HDPE) as claimed in claim 1/attapulgite pre-gelled matrix material is characterized in that this method may further comprise the steps:
(1) at room temperature, attapulgite clay is mixed with the ratio of solvent according to certainweight, high-speed stirring makes the attapulgite pre-gelled.
(2) under temperature 20-30 ℃, with ultrahigh molecular weight polyethylene(UHMWPE), high density polyethylene(HDPE), attapulgite pre-gelled, flow ability modifying agent, oxidation inhibitor high-speed mixing in super mixer.
(3) with in the mixture feeding twin screw extruder that makes in (2) step, extrusion temperature is 180-240 ℃, and extruding pelletization has made extrusion grade ultrahigh molecular weight polyethylene(UHMWPE)/high density polyethylene(HDPE)/attapulgite pre-gelled matrix material.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102796300A (en) * | 2011-05-24 | 2012-11-28 | 上海上丰集团有限公司 | Ultra-high molecular weight polyethylene composite pipe, and raw materials and preparation method thereof |
| CN104004253A (en) * | 2014-05-12 | 2014-08-27 | 漯河科莱堡洁具配件有限公司 | High-molecular-weight polymer nucleating agent-modified ultrahigh-molecular-weight polyethylene blend material |
| CN105585763A (en) * | 2016-03-24 | 2016-05-18 | 叶青 | UHMWPE plastic alloy |
| CN109354752A (en) * | 2018-11-28 | 2019-02-19 | 吉林美高管道系统有限公司 | Polyvinyl piping materials |
| CN110497677A (en) * | 2019-07-28 | 2019-11-26 | 连云港锦艺新材料科技有限公司 | A kind of co-extruding biaxial stretched packing film |
| CN112011111A (en) * | 2020-09-04 | 2020-12-01 | 莱芜华亚超高分子材料科技有限公司 | Ultra-high molecular weight polyethylene lining pipe and preparation method thereof |
| CN115572430A (en) * | 2022-10-25 | 2023-01-06 | 广东美联新材料股份有限公司 | White master batch taking ultra-high molecular weight polyethylene reclaimed material as carrier and preparation method thereof |
-
2010
- 2010-10-16 CN CN2010105197501A patent/CN101985501A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102796300A (en) * | 2011-05-24 | 2012-11-28 | 上海上丰集团有限公司 | Ultra-high molecular weight polyethylene composite pipe, and raw materials and preparation method thereof |
| CN102796300B (en) * | 2011-05-24 | 2014-10-08 | 上海上丰集团有限公司 | Ultra-high molecular weight polyethylene composite pipe, and raw materials and preparation method thereof |
| CN104004253A (en) * | 2014-05-12 | 2014-08-27 | 漯河科莱堡洁具配件有限公司 | High-molecular-weight polymer nucleating agent-modified ultrahigh-molecular-weight polyethylene blend material |
| CN104004253B (en) * | 2014-05-12 | 2016-09-14 | 漯河科莱堡洁具配件有限公司 | Heavy polymer nucleater modified super-high molecular weight polythene blending material |
| CN105585763A (en) * | 2016-03-24 | 2016-05-18 | 叶青 | UHMWPE plastic alloy |
| CN109354752A (en) * | 2018-11-28 | 2019-02-19 | 吉林美高管道系统有限公司 | Polyvinyl piping materials |
| CN110497677A (en) * | 2019-07-28 | 2019-11-26 | 连云港锦艺新材料科技有限公司 | A kind of co-extruding biaxial stretched packing film |
| CN112011111A (en) * | 2020-09-04 | 2020-12-01 | 莱芜华亚超高分子材料科技有限公司 | Ultra-high molecular weight polyethylene lining pipe and preparation method thereof |
| CN115572430A (en) * | 2022-10-25 | 2023-01-06 | 广东美联新材料股份有限公司 | White master batch taking ultra-high molecular weight polyethylene reclaimed material as carrier and preparation method thereof |
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Addressee: Gansu Huafeng Pipe Industry S&T Co., Ltd. Document name: Notification that Application Deemed to be Withdrawn |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110316 |