CN1492086A - High viscosity poly ester monofilament and its producing method and use - Google Patents

High viscosity poly ester monofilament and its producing method and use Download PDF

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Publication number
CN1492086A
CN1492086A CNA031403344A CN03140334A CN1492086A CN 1492086 A CN1492086 A CN 1492086A CN A031403344 A CNA031403344 A CN A031403344A CN 03140334 A CN03140334 A CN 03140334A CN 1492086 A CN1492086 A CN 1492086A
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Prior art keywords
monofilament
viscosity polyester
viscosity
polyester monofilament
braiding
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CNA031403344A
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CN1220801C (en
Inventor
梁少勋
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Jiangmen Xinhui Xinhua Xinhua silk factory Co., Ltd.
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XINHUI DISTRICT INDUSTRIAL COLLOIDAL YARN FACTORY Co Ltd JIANGMEN CITY
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Priority to CN 03140334 priority Critical patent/CN1220801C/en
Publication of CN1492086A publication Critical patent/CN1492086A/en
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Abstract

The high viscosity polyester monofilament has polyethylene glycol terephthalate with characteristic viscosity not less than 0.9 as its main component, and is prepared through drying, melt spinning, cooling to form, drafting, hot setting and other steps. It has smooth surface, homogeneous diameter, high roundness, stable performance, good weaving performance, and excellent fatigue and wear resistance, and may be used widely in industrial fabric, especially various kinds of net.

Description

High-viscosity polyester monofilament and manufacture method thereof and application
Technical field
The present invention relates to a kind of high-viscosity polyester monofilament that is applied to industrial textile.
Background technology
At present, the polyester papermaking wire-cloth monofilament of domestic papermaking manufacturer production is to adopt the polyester slice of common viscosity to produce, its inherent viscosity [η] spy=0.8.Because the limitation of common viscosity polyester slice, filament abrasive resistance, the fatigue durability produced are relatively poor, and therefore the industrial net of weaving out with this monofilament is lacked service life, can not satisfy the demand for development of paper technology.But adopt full-bodied polyester slice to spin monofilament polyester; then because the polyester slice with high viscosity molecular weight is big; the melt viscosity height; spinning pressure is higher in the spinning process; melt post extrusion swelling effect is obvious, and regular meeting the melt deformity takes place or breaks, and causes the strand irregularity; have a strong impact on the quality of monofilament, even can not ordinary production.
Summary of the invention
The objective of the invention is to overcome the problem that existing procucts exist, a kind of stable performance, good, wear-resistant, the fatigue proof high-viscosity polyester monofilament of weaving performance are provided.
Another object of the present invention provides a kind of manufacture method of high-viscosity polyester monofilament.
A further object of the invention provides the application of high-viscosity polyester monofilament.
The object of the present invention is achieved like this: a kind of high-viscosity polyester monofilament, and adopt full-bodied polyester slice to spin, Main Ingredients and Appearance is a polyethylene terephthalate, inherent viscosity [η] Special〉=0.9.
The manufacture method of above-mentioned high-viscosity polyester monofilament comprises the processing step of following order:
(1) adopts full-bodied polyester slice ([η] Special〉=0.9) carry out melt spinning, at first dry wet section makes its moisture content be lower than 50ppm;
(2) section is done in fusion, and by the spinnerets extruding spinning, the temperature of extruding spinning is 280 ± 5 ℃, and 295 ± 5 ℃, 293 ± 5 ℃, 292 ± 5 ℃, 292 ± 5 ℃, 292 ± 5 ℃, 290 ± 5 ℃, the melt pressure of spinning is 80-90bar;
(3) after the supercooling moulding, forming temperature is 55 ℃-60 ℃ to melt through extruding;
(4) adopt two sections drawing-offs, one section draw ratio 2.8-3.2 times, 85-90 ℃ of hot water drawing temperature, two sections draw ratio 1.5-1.75 times, the hot-air drawing temperature is 180-185 ℃, total draft multiple 4.8-5.5;
(5) hot-air setting temperature 225-230 ℃, be wound into silk by oiling, promptly successfully produce high-quality high-viscosity polyester monofilament.
Described high-viscosity polyester monofilament is applied to the Weaving paper-making net, and its use amount accounts for whole more than 1/3rd of used monofilament that throw the net; Be used for the used for conveyer belt spacer screen, its use amount accounts for whole more than 1/2nd of used monofilament that throw the net; Be used for the mine carry use net, its use amount to account for to put in order two of the used monofilament of throwing the net/more than; Be used for the spacer screen that felt is used, its use amount accounts for more than 1/5th of felt spacer screen; The reinforcement that is used for screen pack, its use amount account for whole more than 1/5th of used monofilament that throw the net.
The high-viscosity polyester monofilament that adopts polyester slice with high viscosity to spin out, its monofilament strand smooth surface, diameter is even, roundness good, stable performance, weaving performance is good, endurance, high abrasion resistance, its physical property has reached:
Warp: ultimate strength 〉=53CN/tex, elongation at break 〉=16%,
Dry-hot shrinkage (180 ℃ * 10min)=12 ± 1.5%
Parallel: ultimate strength 〉=40CN/tex, elongation at break 〉=48%,
Dry-hot shrinkage (180 ℃ * 10min)=2 ± 0.7%
Be compared as follows with the fatigue durability of conventional polyester monofilament:
Project The high-viscosity polyester monofilament The conventional polyester monofilament
Φ 0.25 parallel Φ 0.20 warp Φ 0.25 parallel Φ 0.20 warp
Fatigue durability (number of times) ????38763 ????24844 ????16553 ????11841
As seen from the above table, the anti-tired friction number of times of high-viscosity polyester monofilament of the present invention is that 38763 times (Φ 0.25) and 24844 times (Φ 0.20) are respectively 2.34 times and 2.10 times of conventional polyester monofilament, and its fatigue performance is significantly increased.
High-viscosity polyester monofilament net of the present invention grinds off same thickness with common poly-monofilament net at the same terms and compares, and its revolution difference has improved 19.35%, deduction error coefficient 15%, and the anti-wear performance of reckoning has improved 16%.
The specific embodiment
The present invention adopts full-bodied polyester slice ([η] Special〉=0.9) carry out melt spinning, solved the strand deformity that the high viscosity polyester slice spinning causes, broken and the not smooth suitable difficult problem of melt flows, the present invention improves the spinnability of high viscosity polyester slice spinning by improving Design of spinneret.The draw ratio of the general design of common spinnerets is L/D=2-5 times, does not satisfy the specification requirement of high sticking slice spinning, is the bottleneck of the high sticking spinning of restriction.By improving, the aperture of the circular spinnerets that the present invention uses is Φ 0.80mm-Φ 2.0mm, and draw ratio is L/D=10-12; Profile spinneret, as square, rectangle, ellipse and trilobal, draw ratio is L/D=10-12.High sticking melt by spinneret hole the time, the degree of orientation of melt, regularity improves, expanded stress weakened after melt went out spinnerets, reduced the deformity of melt and broken, melt mobile smooth and easy, the strand standard is greatly improved product quality.
Further the present invention will be described below in conjunction with specific embodiment.
Embodiment 1:
(1) with full-bodied wet polyester slice ([η] special=0.90) under 165 ℃ of conditions dry 6 hours, make its moisture content be lower than 50ppm;
(2) section is done in fusion, and by the spinnerets of aperture Φ 1.0mm, draw ratio L/D=10, the screw rod extrusion temperature is 280 ℃, and 293 ℃, 290 ℃, 290 ℃, 290 ℃, 287 ℃, 287 ℃, spinning pressure is 85bar, and speed is 19.8m/min;
(3) after the supercooling moulding, forming temperature is 57 ℃ to melt through extruding;
(4) adopt two sections drawing-offs, 85 ℃ of hot water drawing temperatures, draft speed are 55.5m/min, 2.8 times of draw ratios, and 185 ℃ of hot-air drawing temperatures, draft speed are 95m/min, 1.75 times of draw ratios;
(5) hot-air typing, 225 ℃ of temperature, draft speed is 90m/min.Be wound into silk by oiling, promptly produce Φ 0.25mm parallel monofilament, its physical index is respectively Φ 0.25 ± 0.03mm, fracture strength 46.3CN/tex, and elongation at break 50.2%, dry-hot shrinkage (180 ℃ * 10min) be 1.5%.
This monofilament is applied to Weaving paper-making net parallel, and its use amount accounts for whole more than 1/3rd of used monofilament that throw the net; Being used for the mine conveying uses net, its use amount to account for whole more than 1/2nd of used monofilament that throw the net; The parallel that is used for the conveyer belt spacer screen, its use amount accounts for more than 1/2nd of felt spacer screen; The spacer screen that is used for felt, its use amount accounts for more than 1/5th of felt spacer screen; The reinforcement that is used for screen pack, its use amount account for whole more than 1/5th of used monofilament that throw the net.
Embodiment 2:
(1) with full-bodied wet polyester slice ([η] special=0.94) under 165 ℃ of conditions dry 6 hours, make its moisture content be lower than 50ppm;
(2) section is done in fusion, and by the spinnerets of aperture Φ 1.0mm, draw ratio L/D=10, the screw rod extrusion temperature is 280 ℃, and 291 ℃, 290 ℃, 288 ℃, 288 ℃, 287 ℃, 287 ℃, spinning pressure is 80bar, and speed is 19.8m/min;
(3) after the supercooling moulding, forming temperature is 55 ℃ to melt through extruding;
(4) adopt two sections drawing-offs, 88 ℃ of hot water drawing temperatures, draft speed are 62m/min, 3.0 times of draw ratios, and 180 ℃ of hot-air drawing temperatures, draft speed are 105.3m/min, 1.5 times of draw ratios;
(5) hot-air typing, 210 ℃ of temperature, speed are 100m/min.Be wound into silk by oiling, promptly produce Φ 0.20mm warp monofilament, its physical index is respectively Φ 0.20 ± 0.03mm, fracture strength 65.6CN/tex, and elongation at break 18.5%, dry-hot shrinkage (180 ℃ * 10min) be 10.7%.
This monofilament is applied to Weaving paper-making net warp, and its use amount accounts for whole more than 1/3rd of used monofilament that throw the net; Be used for the mine net, its use amount accounts for whole more than 1/2nd of used monofilament that throw the net; The warp that is used for the conveyer belt spacer screen, its use amount accounts for more than 1/2nd of felt spacer screen; The spacer screen that is used for felt, its use amount accounts for more than 1/5th of felt spacer screen; The reinforcement that is used for screen pack, its use amount account for whole more than 1/5th of used monofilament that throw the net.

Claims (10)

1. high-viscosity polyester monofilament, main component is a polyethylene terephthalate, it is characterized in that: the inherent viscosity of described main component 〉=0.9.
2. high-viscosity polyester monofilament according to claim 1 is characterized in that: described monofilament cross section is circle, square, rectangle, ellipse or trilobal, and cross-sectional area is 0.034mm 2~0.50mm 2
3. the manufacture method of a high-viscosity polyester monofilament comprises the processing step of following order:
(1) dry polyester slice (inherent viscosity 〉=0.9) to moisture<50ppm;
(2) melt extrude spinning through spinnerets, spinning temperature is 280 ± 5 ℃, and 295 ± 5 ℃, 293 ± 5 ℃, 292 ± 5 ℃, 292 ± 5 ℃, 292 ± 5 ℃, 290 ± 5 ℃, spinning pressure is 80-90bar;
(3) cooling forming, forming temperature are 55~60 ℃;
(4) two sections drawing-offs, 2.8~3.2 times of one section draw ratios, drawing temperature is 85~90 ℃, 1.5~1.75 times of two sections draw ratios, drawing temperature is 180~185 ℃;
(5) HEAT SETTING, temperature are 225~230 ℃.
4. the manufacture method of high-viscosity polyester monofilament according to claim 3 is characterized in that: described spinnerets spinneret orifice diameter is 0.8~2.0mm, and draw ratio L/D is 10~12.
5. the manufacture method of high-viscosity polyester monofilament according to claim 3 is characterized in that: described spinnerets spinneret orifice cross section is circle, square, rectangle, ellipse or trilobal, and draw ratio L/D is 10~12.
6. paper-machine screen, it is characterized in that: the braiding monofilament more than 1/3rd is claim 1 or 2 described high-viscosity polyester monofilament.
7. a used for conveyer belt spacer screen is characterized in that; Braiding monofilament more than 1/2nd is claim 1 or 2 described high-viscosity polyester monofilament.
8. a mine is carried and is used net, and it is characterized in that: the braiding monofilament more than 1/2nd is claim 1 or 2 described high-viscosity polyester monofilament.
9. the spacer screen of a felt, it is characterized in that: the braiding monofilament more than 1/5th is claim 1 or 2 described high-viscosity polyester monofilament.
10. screen pack, it is characterized in that: the braiding monofilament more than 1/5th is claim 1 or 2 described high-viscosity polyester monofilament.
CN 03140334 2003-08-29 2003-08-29 High viscosity poly ester monofilament and its producing method and use Expired - Fee Related CN1220801C (en)

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Application Number Priority Date Filing Date Title
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CN1220801C CN1220801C (en) 2005-09-28

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101914818A (en) * 2010-08-09 2010-12-15 陈晓美 Method for manufacturing wear-resistant high-strength polyester fibers
CN102251315A (en) * 2011-08-12 2011-11-23 江门市新会区新华胶丝厂 Method for preparing novel wear-resisting polyester monofilaments for papermaking net
CN101410249B (en) * 2006-01-25 2012-09-05 阿克马法国公司 Flexible film based on fluorinated polymer
CN103290716A (en) * 2013-05-20 2013-09-11 安徽太平洋特种网业有限公司 Process for manufacturing improved pulp net
CN103603069A (en) * 2013-10-22 2014-02-26 无锡金通化纤有限公司 Polyester screen monofilament with low thermal loss and high strength and production method thereof
CN104328517A (en) * 2014-11-17 2015-02-04 厦门厦迪亚斯环保过滤技术有限公司 Manufacturing process for PA6 modified monofilaments
CN105220257A (en) * 2015-09-14 2016-01-06 厦门厦迪亚斯环保过滤技术有限公司 Brilliant and the modification monofilament of high-wearing feature of resistive connection and the preparation method of industrial filter screen
CN113774498A (en) * 2021-10-09 2021-12-10 晋江市永信达织造制衣有限公司 Production method of high-strength wear-resistant polyester filament yarn

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101410249B (en) * 2006-01-25 2012-09-05 阿克马法国公司 Flexible film based on fluorinated polymer
CN101518972B (en) * 2006-01-25 2013-04-17 阿克马法国公司 Flexible film based on fluorinated polymer
CN101914818A (en) * 2010-08-09 2010-12-15 陈晓美 Method for manufacturing wear-resistant high-strength polyester fibers
CN102251315A (en) * 2011-08-12 2011-11-23 江门市新会区新华胶丝厂 Method for preparing novel wear-resisting polyester monofilaments for papermaking net
CN102251315B (en) * 2011-08-12 2013-08-21 江门市新会区新华胶丝厂 Method for preparing novel wear-resisting polyester monofilaments for papermaking net
CN103290716A (en) * 2013-05-20 2013-09-11 安徽太平洋特种网业有限公司 Process for manufacturing improved pulp net
CN103603069A (en) * 2013-10-22 2014-02-26 无锡金通化纤有限公司 Polyester screen monofilament with low thermal loss and high strength and production method thereof
CN103603069B (en) * 2013-10-22 2017-10-13 无锡金通化纤有限公司 A kind of low-loss high tenacity polyester fiber screen cloth monofilament and its production method
CN104328517A (en) * 2014-11-17 2015-02-04 厦门厦迪亚斯环保过滤技术有限公司 Manufacturing process for PA6 modified monofilaments
CN104328517B (en) * 2014-11-17 2017-04-26 厦门厦迪亚斯环保过滤技术有限公司 Manufacturing process for PA6 modified monofilaments
CN105220257A (en) * 2015-09-14 2016-01-06 厦门厦迪亚斯环保过滤技术有限公司 Brilliant and the modification monofilament of high-wearing feature of resistive connection and the preparation method of industrial filter screen
CN113774498A (en) * 2021-10-09 2021-12-10 晋江市永信达织造制衣有限公司 Production method of high-strength wear-resistant polyester filament yarn

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Owner name: JIANGMEN XINHUI XINHUA MONOFILAMENT FACTORY

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Address after: 529100, No. two, No. 51, Zhenxing Road, Xinhui District, Jiangmen, Guangdong

Patentee after: Jiangmen Xinhui District Xinhua Plastic Wire Plant

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Patentee before: Xinhui District Industrial Colloidal Yarn Factory Co., Ltd., Jiangmen City

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Address after: 529100 No. 25 Bei'an North Road, Xinhui District, Jiangmen, Guangdong

Patentee after: Jiangmen Xinhui Xinhua Xinhua silk factory Co., Ltd.

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