CN105200549A - Biodegradable polymer monofilament and production method thereof - Google Patents
Biodegradable polymer monofilament and production method thereof Download PDFInfo
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- CN105200549A CN105200549A CN201510567204.8A CN201510567204A CN105200549A CN 105200549 A CN105200549 A CN 105200549A CN 201510567204 A CN201510567204 A CN 201510567204A CN 105200549 A CN105200549 A CN 105200549A
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Abstract
The invention discloses a biodegradable polymer monofilament and a production method thereof. The biodegradable polyesteramide monofilament is characterized in that the diameter is 0.05 to 2.0 mm, thatthe breaking strength is greater than 3.5CN/dtex, and that the elongation at break is 20 percent to 35 percent, and that the degradation degree is that the degradation rate is greater than or equal to 3.0 percent under the conditions of the soil moisture content being 59.3 percent, the temperature being 28 DEG C and a period being 28 days. The biodegradablepolyesteramide monofilament is prepared by the following method: mixing polyester amide resin and an additive, extruding by a screw melt extrusion machine, cooling extruded melt by adopting a water cooling way to obtain a primary filament, and sequentially performing the steps of hot water stretching, hot wind stretching and heat setting on the primary filament to obtain the biodegradable polyesteramide monofilament. The biodegradable polyesteramide monofilament has the characteristics of high strength and high toughness, and is simple in preparation process, low in cost and suitable for the related fields of fishery and agriculture nets and like.
Description
Technical field
The present invention relates to polymer filament, be specifically related to the method for Biodegradable polyester amides monofilament and this monofilament of production.
Background technology
In general, fishing line, fishing net, agricultural net etc. are the synthetic fiber such as the polyamide monofilament that employing processability, intensity, durability, heat resistance etc. are excellent, but such synthetic fiber, owing to not possessing decomposability under natural environment, can cause the problems such as serious marine pollution.Natural fabric great majority have biodegradability, but cannot show the required contour performance of high strength such as fishing line, fishing net, agricultural net.
Polyesteramide combines the advantage of polyester and polyamide, both has biological degradability, has the excellent physical mechanical properties such as high-strength, heat-resisting again.But polyesteramide to be manufactured monofilament to need, by polyesteramide melt spinning, then to stretch, the monofilament of the mechanical strength that is also difficult to be fully improved by the method at present.In order to biological degradability that is harmless and this copolymer when the polyamide segment of polyester-amide copolymer designs, chain length will shorten.Therefore, polyester-amide copolymer compared with polyamide homopolymer be crystallinity low, be also difficult to occur oriented crystalline or crystallization rate slow.Therefore, although the amorphism obtained by chilling can be made to be that drawn yarn stretches, the orientation in noncrystalline portion cannot be made fully to be fixed up, never fully can not to improve mechanical strength.
Also not yet having at present adopts polyesteramide to be raw material, carries out the report that major diameter monofilament prepared by melt spinning.
Summary of the invention
The technical problem to be solved in the present invention is to provide biodegradable polymer filament, has higher fracture strength and elongation at break, is 59.3% in soil moisture, temperature 28 DEG C, and the time is degradation rate >=3.0% under the condition of 28 days.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
Biodegradable polymers monofilament, its innovative point is: the polyesteramide containing amido link and ester bond on the molecular backbone that described monofilament contains 95wt% ~ 100wt% and 0wt% ~ 5wt% additive; The diameter of described monofilament is 0.05 ~ 2.0mm, and the fracture strength of described monofilament is greater than 3.5CN/dtex, and elongation at break is 20% ~ 35%, is 59.3% in soil moisture, temperature 28 DEG C, and the time is degradation rate >=3.0% under the condition of 28 days.
Further, described polyesteramide is linear polyester acid amides, and its molecular weight is 20000 ~ 50000.
Further, described additive is nano titanium oxide or Nano particles of calcium carbonate.Add the effect that nano titanium oxide or nano-calcium carbonate have activeness and quietness in polyesteramide, improve intensity and the toughness of monofilament.
Further, described additive also comprises photosensitizing agents, and its quality is 0 ~ 3% of monofilament gross mass.
Another object of the present invention is to the production method that biodegradable polymers monofilament is provided, comprise raw material mixing, dry, melt extrude, water cooling, hot water stretch, hot blast stretches, HEAT SETTING and coiling technique, specific as follows:
(1) raw material mixing: polyesteramide and additive are proportionally mixed;
(2) dry: mixed raw material is dried to moisture content≤50ppm on drying machine, and baking temperature is 120 ~ 180 DEG C;
(3) melt extrude: to melt extrude with the extrusion capacity of 30 ~ 100 kgs/hour through screw rod melt extruder after raw material drying and obtain spun filament, melt temperature is 260 ~ 280 DEG C;
(4) water cooling: spun filament is cooled to 30 ~ 60 DEG C through the water of 5 ~ 60 DEG C or the aqueous solution;
(5) hot water stretches: cooled spun filament carries out one stretching in hot bath, and draw ratio is 4.0 ~ 6.0, and hot water temperature is 70 ~ 90 DEG C;
(6) hot blast stretches: draw ratio is 1.2 ~ 1.6 times, and temperature is 120 ~ 180 DEG C;
(7) HEAT SETTING: heat setting temperature is 180 ~ 260 DEG C;
(8) batch: the monofilament after sizing is wound up on bobbin with the speed of 80 ~ 200m/min.
Further, described screw rod melt extruder melt extrudes with the extrusion capacity of 40 ~ 60 kgs/hour and obtains spun filament, and melt temperature is 260 ~ 280 DEG C;
Further, described spun filament is cooled to 40 ~ 50 DEG C through the water of 15 ~ 40 DEG C or the aqueous solution.
Further, the draw ratio that described hot water stretches is 4 ~ 5, and hot water temperature is 70 ~ 90 DEG C; The draw ratio that hot blast stretches is 1.3 ~ 1.5, and temperature is 130 ~ 150 DEG C; Heat setting temperature is 200 ~ 220 DEG C, and coiling speed is 100 ~ 120m/min.
Beneficial effect of the present invention: compared with prior art, Biodegradable polyester amides monofilament provided by the invention, add in preparation process and strengthen, toughness reinforcing nano titanium oxide or nano-calcium carbonate or photosensitizing agents, by adopting suitable technological parameter, prepare the monofilament of diameter between 0.05 ~ 2.0mm, the Biodegradable polyester amides monofilament of preparation has the feature of high-strength and high ductility, its fracture strength is greater than 3.5CN/dtex, elongation at break is 20% ~ 35%, be 59.3% in soil moisture, temperature 28 DEG C, time is degradation rate >=3.0% under the condition of 28 days.
Detailed description of the invention
Below in conjunction with specific embodiment, explanation is further explained to summary of the invention of the present invention, but and non-limiting protection scope of the present invention.
Embodiment 1
Use molecular weight be 25000 polyesteramide (Dupont) resin on drying machine, be dried to moisture content≤50ppm, baking temperature is 130 DEG C; Then to melt extrude with the extrusion capacity of 35 kgs/hour through screw rod melt extruder and obtain spun filament, melt temperature is 260 DEG C; Spun filament through 10 DEG C be water-cooled to 30 DEG C; Cooled spun filament carries out one stretching in hot bath, and draw ratio is 4.0 times, and hot water temperature is 70 DEG C; Then carry out two road hot blasts to stretch, draw ratio is 1.2 times, and temperature is 70 DEG C; Spun filament carries out HEAT SETTING 185 DEG C of conditions after stretching; Be wound up on bobbin with the speed of 90m/min again.
The diameter of the monofilament that the present embodiment obtains is 0.12mm, fracture strength 3.8CN/dtex, and elongation at break is 27.8%, (soil moisture 59.3%, temperature 28 DEG C, 28 days, degradation rate 3.4%).
Embodiment 2
Use the molecular weight of 96wt% be 30000 polyesteramide (Dupont) raw material mix with the nano titanium oxide of 4wt%, drying machine is dried to moisture content≤50ppm, and baking temperature is 140 DEG C; Then to melt extrude with the extrusion capacity of 50 kgs/hour through screw rod melt extruder and obtain spun filament, melt temperature is 265 DEG C; Spun filament is through emulsion but to 40 DEG C of 20 DEG C; Cooled spun filament carries out one stretching in hot bath, and draw ratio is 4.5 times, and hot water temperature is 75 DEG C; Then carry out two road hot blasts to stretch, draw ratio is 1.4 times, temperature 140 DEG C; Spun filament carries out HEAT SETTING 200 DEG C of conditions after stretching; Be wound up on bobbin with the speed of 120m/min again.
The diameter of the monofilament that the present embodiment obtains is 0.15mm, fracture strength 4.1CN/dtex, and elongation at break is 26.7%, soil moisture 59.3%, temperature 28 DEG C, 28 days, degradation rate 3.6%.
Embodiment 3
Use the molecular weight of 96wt% be 35000 polyesteramide (Dupont) raw material mix with the nano-calcium carbonate of 4wt%, drying machine is dried to moisture content≤50ppm, and baking temperature is 150 DEG C; Then to melt extrude with the extrusion capacity of 50 kgs/hour through screw rod melt extruder and obtain spun filament, melt temperature is 270 DEG C; Spun filament through 20 DEG C be water-cooled to 40 DEG C; Cooled spun filament carries out one stretching in hot bath, and draw ratio is 5.0 times, and hot water temperature is 80 DEG C; Then carry out two road hot blasts to stretch, draw ratio is 1.4 times, temperature 140 DEG C; Spun filament carries out HEAT SETTING 210 DEG C of conditions after stretching; Be wound up on bobbin with the speed of 130m/min again.
The diameter of the monofilament that the present embodiment obtains is 0.18mm, fracture strength 4.3CN/dtex, and elongation at break is 25.6%, soil moisture 59.3%, temperature 28 DEG C, 28 days, degradation rate 3.5%.
Embodiment 4
Use 95wt% molecular weight be 45000 polyesteramide (Dupont) raw material mix with the photosensitizing agents (PAS ~ 33) of 2wt% nano titanium oxide and 3wt%, drying machine is dried to moisture content≤50ppm, and baking temperature is 130 DEG C; Then to melt extrude with the extrusion capacity of 40 kgs/hour through screw rod melt extruder and obtain spun filament, melt temperature is 260 DEG C; Spun filament is cooled to 50 DEG C through the emulsion of 40 DEG C; Cooled spun filament carries out one stretching in hot bath, and draw ratio is 5.2 times, and hot water temperature is 82 DEG C; Then carry out two road hot blasts to stretch, draw ratio is 1.5 times, and temperature is 165 DEG C; Spun filament carries out HEAT SETTING 230 DEG C of conditions after stretching; Be wound up on bobbin with the speed of 150m/min again.
The diameter of the monofilament that the present embodiment obtains is 0.14mm, fracture strength 4.8CN/dtex, and elongation at break is 24.3%, soil moisture 59.3%, temperature 28 DEG C, 28 days, degradation rate 3.8%.
Embodiment 5
Use 97wt% molecular weight be 50000 polyesteramide (Dupont) raw material mix with the photosensitizing agents (PAS ~ 33) of 0.5wt% nano-calcium carbonate and 2.5wt%, drying machine is dried to moisture content≤50ppm, and baking temperature is 175 DEG C; Then to melt extrude with the extrusion capacity of 32 kgs/hour through screw rod melt extruder and obtain spun filament, melt temperature is 280 DEG C; Spun filament through 55 DEG C be water-cooled to 58 DEG C; Cooled spun filament carries out one stretching in hot bath, and draw ratio is 5.8 times, and hot water temperature is 88 DEG C; Then carry out two road hot blasts to stretch, draw ratio is 1.6, and temperature is 178 DEG C; Spun filament carries out HEAT SETTING 255 DEG C of conditions after stretching; Be wound up on bobbin with the speed of 190m/min again.
The diameter of the monofilament that the present embodiment obtains is 0.14mm, fracture strength 4.5CN/dtex, and elongation at break is 26.3%, soil moisture 59.3%, temperature 28 DEG C, 28 days, degradation rate 3.7%.
Above-described embodiment is only in order to illustrate technical scheme of the present invention; but not design of the present invention and protection domain are limited; those of ordinary skill in the art modifies to technical scheme of the present invention or equivalent replacement; and not departing from aim and the scope of technical scheme, it all should be encompassed in right of the present invention.
Claims (9)
1. biodegradable polymer filament, is characterized in that: the polyesteramide containing amido link and ester bond on the molecular backbone that described monofilament contains 95wt% ~ 100wt% and 0wt% ~ 5wt% additive; The diameter of described monofilament is 0.05 ~ 2.0mm, and the fracture strength of described monofilament is greater than 3.5CN/dtex, and elongation at break is 20% ~ 35%, is 59.3% in soil moisture, temperature 28 DEG C, and the time is degradation rate >=3.0% under the condition of 28 days.
2. biodegradable polymer filament according to claim 1, is characterized in that: described polyesteramide is linear polyester acid amides, and its molecular weight is 20000 ~ 50000.
3. biodegradable polymer filament according to claim 1, is characterized in that: described additive is nano titanium oxide or Nano particles of calcium carbonate.
4. biodegradable polymer filament according to claim 3, is characterized in that: described additive also comprises photosensitizing agents, its quality is 0 ~ 3% of monofilament gross mass.
5. realize the production method of biodegradable polymer filament according to claim 1, it is characterized in that: comprise raw material mixing, dry, melt extrude, water cooling, hot water stretch, hot blast stretches, HEAT SETTING and coiling technique, specific as follows:
(1) raw material mixing: polyesteramide and additive are proportionally mixed;
(2) dry: mixed raw material is dried to moisture content≤50ppm on drying machine, and baking temperature is 120 ~ 180 DEG C;
(3) melt extrude: to melt extrude with the extrusion capacity of 30 ~ 100 kgs/hour through screw rod melt extruder after raw material drying and obtain spun filament, melt temperature is 260 ~ 280 DEG C;
(4) water cooling: spun filament is cooled to 30 ~ 60 DEG C through the water of 5 ~ 60 DEG C or the aqueous solution;
(5) hot water stretches: cooled spun filament carries out one stretching in hot bath, and draw ratio is 4.0 ~ 6.0, and hot water temperature is 70 ~ 90 DEG C;
(6) hot blast stretches: draw ratio is 1.2 ~ 1.6 times, and temperature is 120 ~ 180 DEG C;
(7) HEAT SETTING: heat setting temperature is 180 ~ 260 DEG C;
(8) batch: the monofilament after sizing is wound up on bobbin with the speed of 80 ~ 200m/min.
6. the production method of biodegradable polymer filament according to claim 5, is characterized in that: the aqueous solution in described step (4) is polyacrylamide amine emulsifier.
7. the production method of biodegradable polymer filament according to claim 5, is characterized in that: described screw rod melt extruder melt extrudes with the extrusion capacity of 45 ~ 55 kgs/hour and obtains spun filament, and melt temperature is 260 ~ 280 DEG C.
8. the production method of biodegradable polymer filament according to claim 5, is characterized in that: described spun filament is cooled to 30 ~ 40 DEG C through the water of 25 ~ 35 DEG C or the aqueous solution.
9. the production method of biodegradable polymer filament according to claim 5, is characterized in that: the draw ratio that described hot water stretches is 4 ~ 5 times, and hot water temperature is 70 ~ 90 DEG C; The draw ratio that hot blast stretches is 1.3 ~ 1.5, and temperature is 130 ~ 150 DEG C; Heat setting temperature is 200 ~ 220 DEG C, and coiling speed is 100 ~ 120m/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510567204.8A CN105200549A (en) | 2015-09-08 | 2015-09-08 | Biodegradable polymer monofilament and production method thereof |
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| CN201510567204.8A CN105200549A (en) | 2015-09-08 | 2015-09-08 | Biodegradable polymer monofilament and production method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048771A (en) * | 2016-07-13 | 2016-10-26 | 南通中兴多元复合钢管有限公司 | Biodegradable polymer monofilaments and producing method thereof |
| CN114164504A (en) * | 2021-12-13 | 2022-03-11 | 浙江宝力特种丝业有限公司 | Production process of large-diameter polyester monofilament |
-
2015
- 2015-09-08 CN CN201510567204.8A patent/CN105200549A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048771A (en) * | 2016-07-13 | 2016-10-26 | 南通中兴多元复合钢管有限公司 | Biodegradable polymer monofilaments and producing method thereof |
| CN114164504A (en) * | 2021-12-13 | 2022-03-11 | 浙江宝力特种丝业有限公司 | Production process of large-diameter polyester monofilament |
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Application publication date: 20151230 |