CN102864506B - The preparation method of amorphous, highly oriented polyethylene long filament - Google Patents
The preparation method of amorphous, highly oriented polyethylene long filament Download PDFInfo
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- CN102864506B CN102864506B CN201210364242.XA CN201210364242A CN102864506B CN 102864506 B CN102864506 B CN 102864506B CN 201210364242 A CN201210364242 A CN 201210364242A CN 102864506 B CN102864506 B CN 102864506B
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Abstract
The invention belongs to new textile material field, particularly relate to a kind of high density polyethylene (HDPE) that adopts and prepare method amorphous, highly oriented polyethylene long filament. The method comprises the following steps: 1) by high density polyethylene (HDPE) master batch, through melt spinning machine hopper, sprayed by spinning head, and with 3～5 times of drawing-offs, obtain spun filament; 2) spun filament is sent into heat treatment path, after a drawing-off, entered rapidly quenching environment; 3) drafting silk is sent into equivalent environment heat treatment path again through secondary drawing-off, again enters rapidly quenching environment 4) secondary drafting silk is sent into three drawing-offs in heat treatment path, enter rapidly cold treatment environment. Utilization of the present invention is hot drawing-off and cold treatment technology repeatedly, prepares amorphous, highly oriented polyethylene long filament, and the method technique is simple, amorphous, high orientation that prepared polyethylene filament fibre structure is characterized as.
Description
Technical field
The invention belongs to new textile material field, particularly relate to a kind of high density polyethylene (HDPE) preparation nothing that adopts fixedThe method of shape, highly oriented polyethylene long filament.
Background technology
In recent years, the high-performance of fiber, high function and new construction were that researcher studies fibers material alwaysEmphasis, because polyethylene structure is simple, function admirable, and source is abundant, have high-modulus, high strength,Corrosion-resistant and excellent dielectric properties, particularly its density is very low, is density in all high-performance fibersMinimum, once appearance, just causing material supply section scholar's broad interest, development is rapid, at space flight, weaponsObtain application widely Deng the civil area such as military service and athletic sports appliance, scientists is endeavoured alwaysIn the developmental research of polyethylene fibre tencel,
Study now more high-strength high-modulus polyethylene fiber density little, there is high strength and modulus and fiberBetter softness, there is good endurance and crocking resistance, but due to high-strength and high-modulus polyethylene fiberThe elongation at break of dimension is less, is prone to cracked ends weft-broken in weaving process, is difficult for weaving. ButThe performance of polyethylene uniqueness, can be widely used in multiple fields, extremely the green grass or young crops of researcher and manufacturing enterpriseLook at. Taking polyethylene as raw material, preparation one have amorphous, highly oriented polyethylene long filament is particularly important.
Summary of the invention
The object of the present invention is to provide that a kind of degree of crystallinity is little, the degree of orientation, preparation technology simple high without fixedThe preparation method of shape, highly oriented polyethylene long filament.
For achieving the above object, method of the present invention comprises the following steps:
1) by high density polyethylene (HDPE) master batch, through melt spinning machine hopper, sprayed by spinning head, and with 3～5Times drawing-off, obtains spun filament;
2) spun filament is sent into heat treatment path, after a drawing-off, entered rapidly quenching environment;
3) drafting silk is sent into equivalent environment heat treatment path again through secondary drawing-off, again enter rapidlyQuenching environment;
4) secondary drafting silk is sent into three drawing-offs in heat treatment path, entered rapidly cold treatment environment.
Described high density polyethylene (HDPE) molecular weight is between 50,000 to 500,000.
In described step 1) melt spinning, melt spinning machine Ge district temperature is controlled at respectively 140～145℃、145～155℃、155～175℃、175～180℃。
Described step 2), step 3) and step 4) heat treatment path temperature be 80～90 DEG C.
Described step 2) and step 3) quenching environment be low temperature water-bath path, temperature is at 0 DEG C～20 DEG C.
Described step 4) cold treatment environment is liquid nitrogen cold wind path, and temperature is at-15 DEG C～-10 DEG C.
Utilization of the present invention is hot drawing-off and cold treatment technology repeatedly, prepares amorphous, highly oriented polyethylene long filament, shouldMethod technique is simple, amorphous, high orientation that prepared polyethylene filament fibre structure is characterized as.
Detailed description of the invention
Below in conjunction with specific embodiment, further set forth the present invention, should be understood that these examples are only for explanationThe present invention and being not used in limits the scope of the invention. In addition should be understood that and reading the content that the present invention lecturesAfterwards, those skilled in the art can do work to the present invention and change or revise, and these equivalent form of values fall equallyIn the application's appended claims limited range.
Embodiment 1:
Adopt high density polyethylene (HDPE) raw material, utilize repeatedly hot drawing-off and quenching treatment technology, preparation is a kind of without fixedThe method of shape, highly oriented polyethylene long filament, comprises the following steps:
1), by high density polyethylene (HDPE) master batch, through melt spinning machine hopper, sprayed by spinning head, and lead with 3 timesStretch, obtaining degree of crystallinity is 60% left and right, and the degree of orientation is the spun filament of 10% left and right;
Described polyethylene master batch molecular weight is 50,000; Described melt spinning machine Ge district temperature is controlled at respectively 140℃、150℃、155℃、175℃；
2) spun filament of spinning head ejection being sent into temperature is the heat treatment path of 80 DEG C, gives 10 times simultaneouslyDrawing-off, and enter rapidly the low temperature water-bath path of 15 DEG C, carry out quenching processing, obtaining degree of crystallinity is 40% left and right,The degree of orientation is a drafting silk of 40%;
3) drafting silk being sent into temperature is the heat treatment path of 80 DEG C again, gives 20 times of drawing-offs simultaneously,And enter rapidly the low temperature water-bath path of 15 DEG C, and carry out quenching processing, obtaining degree of crystallinity is 15% left and right, orientationDegree is the secondary drafting silk of 70% left and right;
4) secondary drafting silk is sent into 85 DEG C of heat treatment paths of temperature, given 20 times of drawing-offs simultaneously, enter rapidlyEnter 10 DEG C of liquid nitrogen cold wind paths and carry out quenching processing, obtain polyethylene filament amorphous, high orientation.
That infra-red sepectrometry harmony modulus method records is respectively amorphous, the polyethylene filament of high orientation, and degree of crystallinity is less than5%, the degree of orientation is greater than 95%.
Embodiment 2:
Adopt high density polyethylene (HDPE) raw material, utilize repeatedly hot drawing-off and quenching treatment technology, preparation is a kind of without fixedThe method of shape, highly oriented polyethylene long filament, comprises the following steps:
1), by high density polyethylene (HDPE) master batch, through melt spinning machine hopper, sprayed by spinning head, and lead with 4 timesStretch, obtaining degree of crystallinity is 65% left and right, and the degree of orientation is 15% left and right spun filament;
Described polyethylene master batch molecular weight is 200,000; Described melt spinning machine Ge district temperature is controlled at respectively145℃、155℃、175℃、190℃；
5) spun filament of spinning head ejection being sent into temperature is the heat treatment path of 90 DEG C, gives 8 times simultaneously and leadsStretch, and enter rapidly the low temperature water-bath path of 20 DEG C, carry out quenching processing, obtaining degree of crystallinity is 45%, orientationDegree is 40% drafting silk;
6) drafting silk being sent into temperature is the heat treatment path of 90 DEG C again, gives 25 times of drawing-offs simultaneously,And enter rapidly the low temperature water-bath path of 20 DEG C, and carry out quenching processing, obtaining degree of crystallinity is 25% left and right, orientationDegree is 65% 2 drafting silk;
7) secondary drafting silk is sent into 90 DEG C of heat treatment paths of temperature, given 20 times of drawing-offs simultaneously, enter rapidlyEnter 15 DEG C of liquid nitrogen cold wind paths and carry out quenching processing, obtain polyethylene filament amorphous, high orientation.
That infra-red sepectrometry harmony modulus method records is respectively amorphous, the polyethylene filament of high orientation, and degree of crystallinity is less than8%, the degree of orientation is greater than 90%.
Embodiment 3:
Adopt high density polyethylene (HDPE) raw material, utilize hot drawing-off and quenching treatment technology repeatedly, preparation is a kind of without fixedThe method of shape, highly oriented polyethylene long filament, comprises the following steps:
1), by high density polyethylene (HDPE) master batch, through melt spinning machine hopper, sprayed by spinning head, and lead with 5 timesStretch, obtaining degree of crystallinity is 70% left and right, and the degree of orientation is the spun filament of 15% left and right;
Described polyethylene master batch molecular weight is 500,000; Described melt spinning machine Ge district temperature is controlled at respectively150℃、170℃、180℃、210℃；
8) spun filament of spinning head ejection being sent into temperature is the heat treatment path of 80 DEG C, gives 5 times simultaneously and leadsStretch, and enter rapidly the low temperature water-bath path of 13 DEG C, carry out quenching processing, obtaining degree of crystallinity is 50% left and right,The degree of orientation is one time, 30% left and right drafting silk;
9) drafting silk being sent into temperature is the heat treatment path of 80 DEG C again, gives 40 times of drawing-offs simultaneously,And enter rapidly the low temperature water-bath path of 13 DEG C, and carry out quenching processing, obtaining degree of crystallinity is 20% left and right, orientationDegree is the secondary drafting silk of 70% left and right;
10) secondary drafting silk being sent into temperature is three drawing-offs in 90 DEG C of heat treatment paths, gives 20 simultaneouslyTimes drawing-off, enters rapidly 10 DEG C of liquid nitrogen cold wind paths and carries out quenching processing, obtains the poly-of amorphous, high orientationEthene long filament.
That infra-red sepectrometry harmony modulus method records is respectively amorphous, the polyethylene filament of high orientation, and degree of crystallinity is less than10%, the degree of orientation is greater than 90%.
Claims (3)
1. a preparation method for amorphous, highly oriented polyethylene long filament, is characterized in that comprising the following steps:
1), by high density polyethylene (HDPE) master batch, through melt spinning machine hopper, sprayed by spinning head, and lead with 3～5 timesStretch, obtain spun filament;
2) spun filament is sent into heat treatment path, after a drawing-off, entered rapidly 0 DEG C～20 DEG C quench ringsBorder;
3) drafting silk is sent into equivalent environment heat treatment path again through secondary drawing-off, again enter rapidly 0DEG C～20 DEG C of quenching environment;
4) secondary drafting silk is sent into three drawing-offs in heat treatment path, entered rapidly-15 DEG C～-10 DEG C cold treatmentsEnvironment;
Described step 2), step 3) and step 4) heat treatment path temperature is 80～90 DEG C;
Described step 2) and step 3) quenching environment is low temperature water-bath path;
Described step 4) cold treatment environment is liquid nitrogen cold wind path.
2. the preparation method of amorphous, highly oriented polyethylene long filament according to claim 1, is characterized in that:Described high density polyethylene (HDPE) molecular weight is between 50,000 to 500,000.
3. the preparation method of amorphous, highly oriented polyethylene long filament according to claim 1, is characterized in that:Described step 1) in melt spinning, melt spinning machine Ge district temperature be controlled at respectively 140～150 DEG C,145～170℃、155～190℃、175～210℃。
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| CN201210364242.XA CN102864506B (en) | 2012-09-26 | 2012-09-26 | The preparation method of amorphous, highly oriented polyethylene long filament |
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| CN102864506B true CN102864506B (en) | 2016-05-11 |
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| EP0350945A2 (en) * | 1988-07-15 | 1990-01-17 | E.I. Du Pont De Nemours And Company | Process for making monofilaments with high tenacity and high tensile uniformity |
| EP1185728B1 (en) * | 1999-05-14 | 2003-12-10 | Zimmer Aktiengesellschaft | Method for producing ultra-fine synthetic yarns |
| CN101352159A (en) * | 2007-07-26 | 2009-01-28 | 中国水产科学研究院东海水产研究所 | Abrasion-proof energy-saving polyethylene fishing net |
| CN101851797A (en) * | 2009-03-31 | 2010-10-06 | 中国水产科学研究院东海水产研究所 | Method for preparing fishing flexible blended and modified polyethylene monofilaments |
| CN101967691A (en) * | 2010-09-21 | 2011-02-09 | 中国科学院宁波材料技术与工程研究所 | Hot drafting method for ultra-high molecular weight polyethylene strands |
| CN102517672A (en) * | 2011-11-09 | 2012-06-27 | 武汉纺织大学 | Preparation method for high-modulus and high-tensile-resilience special fiber |
| CN102644126A (en) * | 2012-04-23 | 2012-08-22 | 江苏纺科新复合材料有限公司 | Preparation method for high-strength polyethylene fibers with net structures |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3661800B2 (en) * | 1995-03-31 | 2005-06-22 | 株式会社高分子加工研究所 | Manufacturing method of high heat-resistant polymer filament |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0350945A2 (en) * | 1988-07-15 | 1990-01-17 | E.I. Du Pont De Nemours And Company | Process for making monofilaments with high tenacity and high tensile uniformity |
| EP1185728B1 (en) * | 1999-05-14 | 2003-12-10 | Zimmer Aktiengesellschaft | Method for producing ultra-fine synthetic yarns |
| CN101352159A (en) * | 2007-07-26 | 2009-01-28 | 中国水产科学研究院东海水产研究所 | Abrasion-proof energy-saving polyethylene fishing net |
| CN101851797A (en) * | 2009-03-31 | 2010-10-06 | 中国水产科学研究院东海水产研究所 | Method for preparing fishing flexible blended and modified polyethylene monofilaments |
| CN101967691A (en) * | 2010-09-21 | 2011-02-09 | 中国科学院宁波材料技术与工程研究所 | Hot drafting method for ultra-high molecular weight polyethylene strands |
| CN102517672A (en) * | 2011-11-09 | 2012-06-27 | 武汉纺织大学 | Preparation method for high-modulus and high-tensile-resilience special fiber |
| CN102644126A (en) * | 2012-04-23 | 2012-08-22 | 江苏纺科新复合材料有限公司 | Preparation method for high-strength polyethylene fibers with net structures |
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