CN1515711A - High-strength polypropylene fibre and its production method - Google Patents
High-strength polypropylene fibre and its production method Download PDFInfo
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- CN1515711A CN1515711A CNA031000487A CN03100048A CN1515711A CN 1515711 A CN1515711 A CN 1515711A CN A031000487 A CNA031000487 A CN A031000487A CN 03100048 A CN03100048 A CN 03100048A CN 1515711 A CN1515711 A CN 1515711A
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Abstract
The present invention relates to a polypropylene fibre and its production process. Specially, it is a production process of polypropylene fibre with high tensile strength. It adopts a special-purpose polypropylene composite shose melt flow index is 5-50, and utilizes melt spinning machine to make extrusion by melting, and utilizes the spinning speed of 100-1000 m/min to wind and obtain windup filament yarn, then makes the windup filament yarn undergo the processes of second drafting and single thermal relaxation treatment so as to obtain the invented high-strength polypropylene finished product filament.
Description
Technical field
The present invention relates to a kind of manufacturing technology of polypropylene fibre, the polypropylene fibre manufacturing technology that particularly a kind of tensile strength is big.
Background technology
The advantage of high-strength polypropylene fiber (high-strength polypropylene fibre) is powerful high, can be suitable with terylene, polyamide fibre industry silk intensity, and cost is much lower; Its hygroscopicity is little, and the dry and wet state mechanical property is identical, and anti-microorganism is wear-resisting.High-strength polypropylene fibre of many uses, main application has: cable; Various industrial suspender belts; Various filter cloths; Geotextiles; Industrial sewing thread, medical sewing thread, the special-purpose sewing thread of container bag etc.The tensile strength of the high-strength polypropylene fibre on the domestic and international market is mostly below 7.0-8.0g/d at present, usually make the high-strength polypropylene fiber with the polypropylene homopolymer of the special-purpose trade mark both at home and abroad, below 6.0-7.0g/d, breadboard research level is also less than 9.0g/d mostly for the intensity of the polypropylene fibre of suitability for industrialized production.
Summary of the invention
The object of the present invention is to provide a kind of polypropene composition of using, on conventional apparatus for melt spinning, make the method for high-strength polypropylene fiber.
Manufacture method provided by the present invention comprises: with the polypropene composition is raw material, melt extrudes the coiling wrapping wire on melt spinning machine; Lax through two road drawing-offs again with thermal stress, make finished fiber.
Described polypropylene resin composite is a kind of resin dedicated, and its manufacture method is applied for a patent simultaneously with the present invention, and it is made up of following component and content (weight portion):
1. the polypropylene homopolymer 100 of chemical degradation modification
2. polymer grade copolymerization or homo-polypropylene 1-14
3. high density polyethylene (HDPE) 0.1-9
4. low density polyethylene (LDPE) 0.1-4
5.2,6-di-tert-butyl-4-methy phenol 0.1-0.5
The melt flow index of above-mentioned chemical degradation modified polypropene homopolymers is 5-50g/10min, is preferably 8-40g/10min;
The melt flow index of above-mentioned polymer grade copolymerization or homo-polypropylene is 0.1-10g/10min, is preferably 1-5g/10min;
The poly melt flow index of above-specified high density is 1-50g/10min, is preferably 5-40g/10min;
The melt flow index of above-mentioned low density polyethylene (LDPE) is 0.2-30g/10min, is preferably 2-20g/10min;
The preparation method of polypropene composition carries out in the following order:
1. by weight with 100 parts chemical degradation modified polypropene, the polymer grade copolymerization of 1-14 part or homo-polypropylene, the high density polyethylene (HDPE) of 0.1-9 part, low density polyethylene (LDPE) and 0.1-0.5 part 2 of 0.1-4 part, the 6-di-tert-butyl-4-methy phenol evenly mixes on high speed agitator.
With mixture under 180-230 ℃ through double screw extruder extrude, granulation, obtain polypropene composition.
The invention is characterized in: with this polypropylene dedicated composition spinning on conventional melt spinning machine.Use screw extruder, the heating-up temperature scope in screw extruder Shang Ge district is at 180-260 ℃.Melt is extruded from spinnerets through behind the measuring pump; Melt is extruded the back and is reeled with the speed of 100-1000m/min, obtains undrawn yarn; Undrawn yarn is through preliminary draft, and then 90-140 ℃ of hot drawing-off, drafting multiple is 4-10 times.Fiber is being wound as finished silk through 100-130 ℃ of HEAT SETTING with at 90-110 ℃ behind the stress retraction.
One of main points of the present invention are: control suitable polypropylene resin composite melt flow index.
Two of main points of the present invention are: control suitable undrawn yarn cooling condition.
Three of main points of the present invention are: use process conditions such as two road drawing-offs and HEAT SETTING, the drafting multiple that makes undrawn yarn is at 4.0-10.0 times.The intensity of fiber is reached more than the 9.0g/d.
The specific embodiment
Context of the present invention can be with the further additional explanation of the following example, but can not think that the present invention only only limits to the content of embodiment.
Embodiment 1
Melt flow index is that the polypropylene resin composite of 15g/10min is extruded through screw extruder, the temperature in each district of screw rod is: 190 ℃ in a district, 220 ℃ in two districts, 240 ℃ in three districts, 240 ℃ in four districts, 245 ℃ in five districts, melt is extruded from spinnerets through measuring pump, speed with 100m/min is reeled, and oiling obtains undrawn yarn.Undrawn yarn is carried out drawing-off.The temperature of heat plate of multiple 1.08, the second road drawing-offs of the first road preliminary draft is 90 ℃, and hot plate temperature is 130 ℃ and 100 ℃, and the total draft multiple is 7.5 times.Fiber after the drawing-off enters heat set zone, and the heat dish of hot laxation shaping is 100 ℃, and hot plate is 100 ℃, and reeling then obtains finished silk.Draft speed is 200m/min, obtains fibre property and sees Table 1.
Embodiment 2
Melt flow index is that the polypropylene resin composite of 10g/10min is extruded through screw extruder, and the temperature in each district of screw rod is: 190 ℃ in a district, 220 ℃ in two districts, 250 ℃ in three districts, 250 ℃ in four districts, 245 ℃ in five districts.Melt is extruded from spinnerets through measuring pump, reels with the speed of 400m/min, and oiling obtains undrawn yarn.Undrawn yarn is carried out drawing-off, and the temperature of heat plate of multiple 1.08, the second road drawing-offs of the first road preliminary draft is 105 ℃, and hot plate temperature is 140 ℃ and 100 ℃, and the total draft multiple is 5.0 times.The fiber HEAT SETTING after the drawing-off, the heat dish of typing is 120 ℃, is wound as finished silk then again.Draft speed is 150m/min, obtains fibre property and sees Table 1.
Embodiment 3
Melt flow index is that the polypropylene resin composite of 12g/10min is extruded through screw extruder, and the temperature in each district of screw rod is: 190 ℃ in a district, 220 ℃ in two districts, 255 ℃ in three districts, 250 ℃ in four districts, 250 ℃ in five districts.Melt is extruded from spinnerets through measuring pump, reels with the speed of 1000m/min, and oiling obtains undrawn yarn.Undrawn yarn is carried out drawing-off, and the temperature of heat plate of multiple 1.08, the second road drawing-offs of the first road preliminary draft is 100 ℃, and hot plate temperature is 135 ℃ and 100 ℃, and the total draft multiple is 5.0 times.The fiber HEAT SETTING after the drawing-off, the heat dish of typing is 110 ℃ again, and hot plate is 100 ℃, and reeling then obtains finished silk.Draft speed is 120m/min, obtains fibre property and sees Table 1.
Embodiment 4
Melt flow index is that the polypropylene resin composite of 30g/10min is extruded through screw extruder, the temperature in each district of screw rod is: 190 ℃ in a district, 210 ℃ in two districts, 220 ℃ in three districts, 220 ℃ in four districts, 210 ℃ in five districts, melt is extruded from spinnerets through measuring pump, speed with 700m/min is reeled, and oiling obtains undrawn yarn.Undrawn yarn is carried out drawing-off, and the temperature of heat plate of multiple 1.08, the second road drawing-offs of the first road preliminary draft is 90 ℃, and hot plate temperature is 120 ℃ and 100 ℃, and the total draft multiple is 6.6 times.Fiber HEAT SETTING after the drawing-off, the heat dish of typing is 100 ℃, and hot plate is 100 ℃, and reeling then obtains finished silk.Draft speed is 160m/min, obtains fibre property and sees Table 1.
Embodiment 5
Melt flow index is that the polypropene composition of 40g/10min is extruded through screw extruder, the temperature in each district of screw rod is: 180 ℃ in a district, 210 ℃ in two districts, 230 ℃ in three districts, 230 ℃ in four districts, 225 ℃ in five districts, melt is extruded from spinnerets through measuring pump, speed with 200m/min is reeled, and oiling obtains undrawn yarn.Undrawn yarn is carried out drawing-off, and the temperature of heat plate of multiple 1.08, the second road drawing-offs of the first road preliminary draft is 90 ℃, and hot plate temperature is 100 ℃ and 100 ℃, and the total draft multiple is 10.0 times.Fiber HEAT SETTING after the drawing-off, the heat dish of typing is 100 ℃, and hot plate is 100 ℃, and reeling then obtains finished silk.Draft speed is 280m/min, obtains fibre property and sees Table 1.
Table 1. embodiment 1-5
| Embodiment | 1 | 2 | 3 | 4 | 5 | |
| Spinning speed (m/min) | 100 | 400 | 1000 | 700 | 200 | |
| Spun filament fiber number (den) | 18.93 | 9.37 | 9.37 | 9.65 | 19.09 | |
| The total draft multiple | 7.5 | 4.0 | 5.0 | 6.6 | 10.0 | |
| Draft speed (m/min) | 200 | 150 | 120 | 160 | 280 | |
| The drafted fibre physical property | Fiber number (den) | 2.64 | 2.15 | 1.88 | 1.47 | 2.12 |
| Fracture strength (g/d) | 10.33 | 8.97 | 9.41 | 9.38 | 10.31 | |
| Extension at break (%) | 33.1 | 53.2 | 42.2 | 28.8 | 24.6 | |
Claims (5)
1. high-strength polypropylene fiber.It is characterized in that it is is raw material with polypropylene dedicated composition of the present invention, makes through melt spinning method.
2. the manufacturing technology of a high-strength polypropylene fiber is characterized in that: spinning on conventional melt spinning machine, and the heating-up temperature scope in screw extruder Shang Ge district is 180-260 ℃; Polypropylene resin composite heating and melting and being extruded in screw extruder, melt is extruded from spinnerets through behind the measuring pump.Melt is extruded the back and is reeled with the speed of 100-1000m/min, obtains undrawn yarn; Undrawn yarn carries out drawing-off again, and first step normal temperature preliminary draft, drafting multiple are 1.05-1.2 times; 90-140 ℃ of drawing-off, the multiple of drawing-off is 4-10 times then; Fiber makes finished silk 100-120 ℃ of HEAT SETTING with at 90-110 ℃ of retraction.
3. according to claim 1 and 2 described high-strength polypropylene fiber and manufacturing technologies thereof.The melt flow index that it is characterized in that used polypropylene resin composite is 5-50g/10min, is preferably 8-40g/10min.
4. according to claim 1 and 2 described high-strength polypropylene fiber and manufacturing technologies thereof.The spinning speed that it is characterized in that undrawn yarn is 100-1000m/min, is preferably 200-700m/min; Spinning temperature is 200-260 ℃.
5. according to the manufacturing technology of claim 1 and 4 described high-strength polypropylene fibers, it is characterized in that using the twice drawing-off, the technology of one HEAT SETTING.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031000487A CN1515711A (en) | 2003-01-08 | 2003-01-08 | High-strength polypropylene fibre and its production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031000487A CN1515711A (en) | 2003-01-08 | 2003-01-08 | High-strength polypropylene fibre and its production method |
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| CN1515711A true CN1515711A (en) | 2004-07-28 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357505C (en) * | 2005-06-27 | 2007-12-26 | 江苏泽天化纤有限公司 | High strength and low extending thick Denier polypropylene yarns and production thereof |
| CN102199806A (en) * | 2011-04-12 | 2011-09-28 | 射阳县恩玉化纤有限公司 | Method for producing high-tenacity polypropylene fibre |
| CN102251304A (en) * | 2011-05-23 | 2011-11-23 | 宁波大成新材料股份有限公司 | High-strength and high-modulus polypropylene fiber production method |
| CN101768808B (en) * | 2008-12-29 | 2013-07-24 | 天津纺织工程研究院有限公司 | High load shock-resistant degradable geotextile and production method thereof |
| CN105951204A (en) * | 2016-06-27 | 2016-09-21 | 马海燕 | High-strength polypropylene monofilament and production method thereof |
| CN108993027A (en) * | 2018-06-28 | 2018-12-14 | 安徽原野滤材有限公司 | A kind of high temperature resistant, acid and alkali-resistance industrial filter cloth material |
-
2003
- 2003-01-08 CN CNA031000487A patent/CN1515711A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357505C (en) * | 2005-06-27 | 2007-12-26 | 江苏泽天化纤有限公司 | High strength and low extending thick Denier polypropylene yarns and production thereof |
| CN101768808B (en) * | 2008-12-29 | 2013-07-24 | 天津纺织工程研究院有限公司 | High load shock-resistant degradable geotextile and production method thereof |
| CN102199806A (en) * | 2011-04-12 | 2011-09-28 | 射阳县恩玉化纤有限公司 | Method for producing high-tenacity polypropylene fibre |
| CN102251304A (en) * | 2011-05-23 | 2011-11-23 | 宁波大成新材料股份有限公司 | High-strength and high-modulus polypropylene fiber production method |
| CN102251304B (en) * | 2011-05-23 | 2013-10-16 | 宁波大成新材料股份有限公司 | High-strength and high-modulus polypropylene fiber production method |
| CN105951204A (en) * | 2016-06-27 | 2016-09-21 | 马海燕 | High-strength polypropylene monofilament and production method thereof |
| CN108993027A (en) * | 2018-06-28 | 2018-12-14 | 安徽原野滤材有限公司 | A kind of high temperature resistant, acid and alkali-resistance industrial filter cloth material |
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