CN103554859B - A kind of Slice material special for biodegradable non-woven fabric and preparation method thereof - Google Patents
A kind of Slice material special for biodegradable non-woven fabric and preparation method thereof Download PDFInfo
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- CN103554859B CN103554859B CN201310530221.5A CN201310530221A CN103554859B CN 103554859 B CN103554859 B CN 103554859B CN 201310530221 A CN201310530221 A CN 201310530221A CN 103554859 B CN103554859 B CN 103554859B
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Abstract
The invention provides a kind of Slice material special for biodegradable non-woven fabric and preparation method thereof.Described method comprises: with poly(lactic acid) and PEOz for raw material, under 50 DEG C to 70 DEG C conditions after dry 6 ~ 12h, carries out melt blending, obtain described Slice material special for biodegradable non-woven fabric in mixing facilities; Wherein, be as the criterion with poly(lactic acid) 100 weight part, PEOz is 0.5 ~ 10 weight part, the glass transition temperature Tg of described PEOz is 58.6 DEG C, the heat decomposition temperature of described PEOz is 365 ~ 380 DEG C, the number-average molecular weight of described PEOz is 50000 or 200000, temperature time blended is 180 DEG C, the blended time is 3 ~ 8min, and time blended, the rotating speed of described mixing facilities is 30 ~ 100rad/min.
Description
Technical field
The present invention relates to non-woven fabrics and manufacture field, particularly relate to a kind of Slice material special for biodegradable non-woven fabric and preparation method thereof.
Background technology
Non-woven fabrics is weaved cotton cloth also known as non-woven, is to be made up of orientation or random fiber, has protection against the tide, ventilative, pliable and tough, light weight, nontoxic, nonirritant, rich color, lower-price characteristic.The production technology of non-woven fabrics mainly contains spun-bond process, meltblown, pulp air-lay process method, pin (water) acupuncture manipulation, chemical adhesion method and heat viscosity method etc.Wherein, spun-bond process is a kind of nonwoven techniques obtaining fairly large application.Spun-bond process is also called filature fleece formation method, is one of main method of nonwoven production, and its principle is the method utilizing synthetic fiber spinning, and superpolymer spinning, drawing-off, laying are become net, reinforces form nonwoven material finally by methods such as acupuncture, hot rolling or self bondings.
The Nonwovens of spunbond technological process of production: → finished product is binded → batches in section → screw extrusion press → melt-spinning → air cooling → drawing-off (vacuum drawing-off or malleation stretch) → lapping → hot rolling
The feature of spun-bond process is short flow, and production efficiency is high.Can directly drop in screw extrusion press by feed stock chip, a step be spun into non-woven fabrics, is a kind of up-and-coming non-woven fabric production method.
Any fusible polymkeric substance can make non-woven fabrics in theory, but the flowing property of its spinning property and melt (melting index) is closely related.The melting index of spunbond one-tenth silk requires it is about 20 to 60g/10min, spunbond process requires that polymer melt has moderate melting index, can in high speed spinning process Uniform Flow, and do not cause fracture of wire frequency to increase because melt strength is too low, continuous filament yarn lapping uniformly spun-bonded non-woven fabrics can be formed.
Poly(lactic acid) is a kind of novel Biodegradable material, can be degraded into water and carbonic acid gas under field conditions (factors).Poly(lactic acid) because of its excellence mechanical and physical performance and can machine-shaping property and be considered to have potential use widely, but the hard and poor toughness of poly(lactic acid) matter, lack flexible and elasticity, these shortcomings limit its application.Poly(lactic acid) non-woven fabrics is bio-based type material, soft, adsorptivity is strong, moisturizing is ventilative, antibacterial, be a kind of pure, safety, health, get close to the quality matetrial of skin, there is many biological natures that other base material is incomparable.
At present, the melting index of domestic commercially available most of polylactic acid slice is all on the low side, mobility is poor, be not suitable for spun-bond process and produce non-woven fabrics, there are some researches show, under pure poly(lactic acid) high-temperature sample, carry out the easy thermolysis of spunbond experiment, cause Mechanical Properties of Products deterioration, and when carrying out spunbond at a lower temperature, its melt flow is unstable and melt fracture easily occurs, finished product fragility is also very large.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of Slice material special for biodegradable non-woven fabric and preparation method thereof, and increase the melting index of Slice material with while improving fluidity of molten, the elongation at break of increasing Slice material, improves its toughness.
In order to solve the problem, the invention discloses a kind of preparation method of Slice material special for biodegradable non-woven fabric, comprising:
With poly(lactic acid) and PEOz for raw material, under 50 DEG C to 70 DEG C conditions after dry 6 ~ 12h, in mixing facilities, carry out melt blending, obtain described Slice material special for biodegradable non-woven fabric;
Wherein, be as the criterion with poly(lactic acid) 100 weight part, PEOz is 0.5 ~ 10 weight part, the glass transition temperature Tg of described PEOz is 58.6 DEG C, the heat decomposition temperature of described PEOz is 365 ~ 380 DEG C, the number-average molecular weight of described PEOz is 50000 or 200000, temperature time blended is 180 DEG C, the blended time is 3 ~ 8min, and time blended, the rotating speed of described mixing facilities is 30 ~ 100rad/min.
Preferably, be as the criterion with poly(lactic acid) 100 weight part, PEOz is 10 weight parts.
Preferably, described poly(lactic acid) is 15.0g/10min ~ 18.0g/10min in condition melting index under the condition of probe temperature 190 DEG C with nominal load 2160g.
Preferably, the glass transition temperature Tg of described poly(lactic acid) is 60.5 DEG C.
Preferably, the tensile strength of described poly(lactic acid) is 56.3MPa.
Preferably, the elongation at break of described poly(lactic acid) is 5.6%.
Preferably, described mixing facilities is Banbury mixer.
Present invention also offers a kind of Slice material special for biodegradable non-woven fabric prepared by method according to any one of the claims, with poly(lactic acid) and PEOz for raw material, described Slice material special for biodegradable non-woven fabric melting index under probe temperature is 190 DEG C and nominal load is the condition of 2160g is 18.9 ~ 30.2g/10min, the tensile strength of described Slice material special for biodegradable non-woven fabric is 48.3 ~ 62.7MPa, and the elongation at break of described Slice material special for biodegradable non-woven fabric is 4.8 ~ 208.7%.
Compared with prior art, the present invention includes following advantage:
The invention provides a kind of Slice material special for biodegradable non-woven fabric and preparation method thereof, described Slice material with the PEOz of the poly(lactic acid) of 100 weight parts and 0.5 ~ 10 weight part for raw material, by by two kinds of raw materials under 50 DEG C to 70 DEG C conditions after dry 6 ~ 12h, in mixing facilities, melt blending obtains Slice material.The present invention is by adding PEOz, the Slice material obtained melting index under probe temperature is 190 DEG C and nominal load is the condition of 2160g is 30.2g/10min, increase the melting index of polylactic acid raw material, the fluidity of molten of polylactic acid slice is made to reach the requirement of spun-bonded non-woven fabrics to the spunbond one-tenth silk of raw material, simultaneously, the tensile strength of Slice material can reach 62.7MPa, mechanical strength keeps better, the elongation at break of Slice material can reach 208.7%, increase the elongation at break of original Slice material, Slice material toughness is significantly improved.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with embodiment, the present invention is further detailed explanation.
Experimental technique described in following embodiment, if no special instructions, is ordinary method; Described reagent and material, if no special instructions, all can obtain from commercial channels.
The invention provides a kind of preparation method of Slice material special for biodegradable non-woven fabric, comprising:
With poly(lactic acid) and PEOz for raw material, under 50 DEG C to 70 DEG C conditions after dry 6 ~ 12h, in mixing facilities, carry out melt blending, obtain described Slice material special for biodegradable non-woven fabric.
PEOz is also known as poly-(N-propionyl ethyleneimine); English name is (poly (2-ethyl-2-oxazoline); write a Chinese character in simplified form PEOX; belong to ethyleneimine base polymer; being obtained by 2-ethyl-2-oxazoline (writing a Chinese character in simplified form EOX) cation ring-opening polymerization, is the good polymkeric substance of a kind of unformed thermostability.Up to now, about the correlative study improving poly(lactic acid) mobility and toughness with PEOz, at home and abroad there is no report.
In the embodiment of the present invention, be as the criterion with poly(lactic acid) 100 weight part, PEOz is 0.5 ~ 10 weight part, the glass transition temperature Tg of the PEOz adopted is 58.6 DEG C, heat decomposition temperature is 365 ~ 380 DEG C, number-average molecular weight is 50000 or 200000, and temperature time blended is 180 DEG C.
In the embodiment of the present invention, when being undertaken blended by poly(lactic acid) and PEOz, the blended time is 3 ~ 8min, and time blended, the rotating speed of mixing facilities is 30 ~ 100rad/min.Preferably, mixing facilities can be Banbury mixer.
Further preferably, the poly(lactic acid) adopted in the embodiment of the present invention can be 15.0g/10min ~ 18.0g/10min in condition melting index under the condition of probe temperature 190 DEG C with nominal load 2160g, glass transition temperature Tg can be 60.5 DEG C, tensile strength can be 56.3MPa, and elongation at break can be 5.6%.
Through experiment test, Slice material special for biodegradable non-woven fabric prepared by the embodiment of the present invention, under probe temperature is 190 DEG C and nominal load is the condition of 2160g, the melting index of test is 18.9 ~ 30.2g/10min, increase the melting index of polylactic acid raw material, the fluidity of molten of polylactic acid slice material is made to reach the requirement of spun-bonded non-woven fabrics to the spunbond one-tenth silk of raw material, simultaneously, tensile strength is 48.3 ~ 62.7MPa, elongation at break is 4.8 ~ 208.7%, in maintenance Slice material compared with on the basis of high tensile, mechanical strength keeps better, increase the elongation at break of original Slice material, Slice material toughness is greatly improved.
For making those skilled in the art understand the present invention better, below by way of multiple specific embodiment, Slice material special for biodegradable non-woven fabric preparation method of the present invention is described.
Embodiment 1,
A component is taken by following mass parts:
Poly(lactic acid) 100 weight part; PEOz 50000 molecular weight 0.5 weight part.
Preparation technology is as follows:
By the 50 DEG C of dryings 12 hours in vacuum drying oven of above-mentioned each component.Dried each component melt blending in Banbury mixer in proportion, blending temperature is 180 DEG C, and the blended time is 3min, and rotating speed is 60rad/min, obtains blend.
The melting index of blend uses XNR-400B melt flow rate (MFR) determinator (discharge port diameter is Φ 2.095 ± 0.005mm, and discharge port length is 8.000 ± 0.025mm) to measure, and temperature is 190 DEG C, and pressure is 2160g.
Blend is pressed into plate on compression molding instrument, after being cut into dumbbell shape batten, mechanical property is tested: batten length is 75mm with tension tester, width is 4 ± 0.1mm, and thickness is 1 ± 0.1mm, and trial speed is 25mm/min, experiment repetition 6 times, average, obtain the tensile strength of described poly-lactic acid material, elongation at break.The mechanical performance data measured sees the following form 1.
Embodiment 2
A component is taken by following mass parts:
Poly(lactic acid) 100 weight part; PEOz 50000 molecular weight 1 weight part.
Preparation technology is as follows:
By the 50 DEG C of dryings 12 hours in vacuum drying oven of above-mentioned each component.Dried each component melt blending in Banbury mixer in proportion, blending temperature is 180 DEG C, and the blended time is 3min, and rotating speed is 60rad/min, obtains blend.
The melting index of blend uses XNR-400B melt flow rate (MFR) determinator to measure, and temperature is 190 DEG C, and pressure is 2160g.
Blend is pressed into plate on compression molding instrument, after being cut into dumbbell shape batten, mechanical property is tested: batten length is 75mm with tension tester, width is 4 ± 0.1mm, and thickness is 1 ± 0.1mm, and trial speed is 25mm/min, experiment repetition 6 times, average, obtain the tensile strength of described poly-lactic acid material, elongation at break.The mechanical performance data measured sees the following form 1.
Embodiment 3
A component is taken by following mass parts:
Poly(lactic acid) 100 weight part; PEOz 50000 molecular weight 3 weight part.
Preparation technology is as follows:
By the 50 DEG C of dryings 12 hours in vacuum drying oven of above-mentioned each component.Dried each component melt blending in Banbury mixer in proportion, blending temperature is 180 DEG C, and the blended time is 3min, and rotating speed is 60rad/min, obtains blend.
The melting index of blend uses XNR-400B melt flow rate (MFR) determinator to measure, and temperature is 190 DEG C, and pressure is 2160g.
Blend is pressed into plate on compression molding instrument, after being cut into dumbbell shape batten, mechanical property is tested: batten length is 75mm with tension tester, width is 4 ± 0.1mm, and thickness is 1 ± 0.1mm, and trial speed is 25mm/min, experiment repetition 6 times, average, obtain the tensile strength of described poly-lactic acid material, elongation at break.The mechanical performance data measured sees the following form 1.
Embodiment 4
A component is taken by following mass parts:
Poly(lactic acid) 100 weight part; PEOz 50000 molecular weight 5 weight part.
Preparation technology is as follows:
By the 50 DEG C of dryings 12 hours in vacuum drying oven of above-mentioned each component.Dried each component melt blending in Banbury mixer in proportion, blending temperature is 180 DEG C, and the blended time is 3min, and rotating speed is 60rad/min, obtains blend.
The melting index of blend uses XNR-400B melt flow rate (MFR) determinator to measure, and temperature is 190 DEG C, and pressure is 2160g.
Blend is pressed into plate on compression molding instrument, after being cut into dumbbell shape batten, mechanical property is tested: batten length is 75mm with tension tester, width is 4 ± 0.1mm, and thickness is 1 ± 0.1mm, and trial speed is 25mm/min, experiment repetition 6 times, average, obtain the tensile strength of described poly-lactic acid material, elongation at break.The mechanical performance data measured sees the following form 1.
Embodiment 5
A component is taken by following mass parts:
Poly(lactic acid) 100 weight part; PEOz 50000 molecular weight 7 weight part.
Preparation technology is as follows:
By the 50 DEG C of dryings 12 hours in vacuum drying oven of above-mentioned each component.Dried each component melt blending in Banbury mixer in proportion, blending temperature is 180 DEG C, and the blended time is 3min, and rotating speed is 60rad/min, obtains blend.
The melting index of blend uses XNR-400B melt flow rate (MFR) determinator to measure, and temperature is 190 DEG C, and pressure is 2160g.
Blend is pressed into plate on compression molding instrument, after being cut into dumbbell shape batten, mechanical property is tested: batten length is 75mm with tension tester, width is 4 ± 0.1mm, and thickness is 1 ± 0.1mm, and trial speed is 25mm/min, experiment repetition 6 times, average, obtain the tensile strength of described poly-lactic acid material, elongation at break.The mechanical performance data measured sees the following form 1.
Embodiment 6
A component is taken by following mass parts:
Poly(lactic acid) 100 weight part; PEOz 50000 molecular weight 10 weight part.
Preparation technology is as follows:
By the 50 DEG C of dryings 12 hours in vacuum drying oven of above-mentioned each component.Dried each component melt blending in Banbury mixer in proportion, blending temperature is 180 DEG C, and the blended time is 3min, and rotating speed is 60rad/min, obtains blend.
The melting index of blend uses XNR-400B melt flow rate (MFR) determinator to measure, and temperature is 190 DEG C, and pressure is 2160g.
Blend is pressed into plate on compression molding instrument, after being cut into dumbbell shape batten, mechanical property is tested: batten length is 75mm with tension tester, width is 4 ± 0.1mm, and thickness is 1 ± 0.1mm, and trial speed is 25mm/min, experiment repetition 6 times, average, obtain the tensile strength of described poly-lactic acid material, elongation at break.The mechanical performance data measured sees the following form 1.
Embodiment 7
A component is taken by following mass parts:
Poly(lactic acid) 100 weight part; PEOz 200000 molecular weight 0.5 weight part.
Preparation technology is as follows:
By the 50 DEG C of dryings 12 hours in vacuum drying oven of above-mentioned each component.Dried each component melt blending in Banbury mixer in proportion, blending temperature is 180 DEG C, and the blended time is 3min, and rotating speed is 60rad/min, obtains blend.
The melting index of blend uses XNR-400B melt flow rate (MFR) determinator to measure, and temperature is 190 DEG C, and pressure is 2160g.
Blend is pressed into plate on compression molding instrument, after being cut into dumbbell shape batten, mechanical property is tested: batten length is 75mm with tension tester, width is 4 ± 0.1mm, and thickness is 1 ± 0.1mm, and trial speed is 25mm/min, experiment repetition 6 times, average, obtain the tensile strength of described poly-lactic acid material, elongation at break.The mechanical performance data measured sees the following form 1.
Embodiment 8
A component is taken by following mass parts:
Poly(lactic acid) 100 weight part; PEOz 200000 molecular weight 1 weight part.
Preparation technology is as follows:
By the 50 DEG C of dryings 12 hours in vacuum drying oven of above-mentioned each component.Dried each component melt blending in Banbury mixer in proportion, blending temperature is 180 DEG C, and the blended time is 3min, and rotating speed is 60rad/min, obtains blend.
The melting index of blend uses XNR-400B melt flow rate (MFR) determinator to measure, and temperature is 190 DEG C, and pressure is 2160g.
Blend is pressed into plate on compression molding instrument, after being cut into dumbbell shape batten, mechanical property is tested: batten length is 75mm with tension tester, width is 4 ± 0.1mm, and thickness is 1 ± 0.1mm, and trial speed is 25mm/min, experiment repetition 6 times, average, obtain the tensile strength of described poly-lactic acid material, elongation at break.The mechanical performance data measured is in table 1.
Embodiment 9
A component is taken by following mass parts:
Poly(lactic acid) 100 weight part; PEOz 200000 molecular weight 3 weight part.
Preparation technology is as follows:
By the 50 DEG C of dryings 12 hours in vacuum drying oven of above-mentioned each component.Dried each component melt blending in Banbury mixer in proportion, blending temperature is 180 DEG C, and the blended time is 3min, and rotating speed is 60rad/min, obtains blend.
The melting index of blend uses XNR-400B melt flow rate (MFR) determinator to measure, and temperature is 190 DEG C, and pressure is 2160g.
Blend is pressed into plate on compression molding instrument, after being cut into dumbbell shape batten, mechanical property is tested: batten length is 75mm with tension tester, width is 4 ± 0.1mm, and thickness is 1 ± 0.1mm, and trial speed is 25mm/min, experiment repetition 6 times, average, obtain the tensile strength of described poly-lactic acid material, elongation at break.The mechanical performance data measured sees the following form 1.
Embodiment 10
A component is taken by following mass parts:
Poly(lactic acid) 100 weight part; Poly-(2-ethyl-2-oxazoline 200000 molecular weight 5 weight part.
Preparation technology is as follows:
By the 50 DEG C of dryings 12 hours in vacuum drying oven of above-mentioned each component.Dried each component melt blending in Banbury mixer in proportion, blending temperature is 180 DEG C, and the blended time is 3min, and rotating speed is 60rad/min, obtains blend.
The melting index of blend uses XNR-400B melt flow rate (MFR) determinator to measure, and temperature is 190 DEG C, and pressure is 2160g.
Blend is pressed into plate on compression molding instrument, after being cut into dumbbell shape batten, mechanical property is tested: batten length is 75mm with tension tester, width is 4 ± 0.1mm, and thickness is 1 ± 0.1mm, and trial speed is 25mm/min, experiment repetition 6 times, average, obtain the tensile strength of described poly-lactic acid material, elongation at break.The mechanical performance data measured sees the following form 1.
Embodiment 11
A component is taken by following mass parts:
Poly(lactic acid) 100 weight part; Poly-(2-ethyl-2-oxazoline 200000 molecular weight 7 weight part.
Preparation technology is as follows:
By the 50 DEG C of dryings 12 hours in vacuum drying oven of above-mentioned each component.Dried each component melt blending in Banbury mixer in proportion, blending temperature is 180 DEG C, and the blended time is 3min, and rotating speed is 60rad/min, obtains blend.
The melting index of blend uses XNR-400B melt flow rate (MFR) determinator to measure, and temperature is 190 DEG C, and pressure is 2160g.
Blend is pressed into plate on compression molding instrument, after being cut into dumbbell shape batten, mechanical property is tested: batten length is 75mm with tension tester, width is 4 ± 0.1mm, and thickness is 1 ± 0.1mm, and trial speed is 25mm/min, experiment repetition 6 times, average, obtain the tensile strength of described poly-lactic acid material, elongation at break.The mechanical performance data measured sees the following form 1.
Embodiment 12
A component is taken by following mass parts:
Poly(lactic acid) 100 weight part; PEOz 200000 molecular weight 10 weight part.
Preparation technology is as follows:
By the 50 DEG C of dryings 12 hours in vacuum drying oven of above-mentioned each component.Dried each component melt blending in Banbury mixer in proportion, blending temperature is 180 DEG C, and the blended time is 3min, and rotating speed is 60rad/min, obtains blend.
The melting index of blend uses XNR-400B melt flow rate (MFR) determinator to measure, and temperature is 190 DEG C, and pressure is 2160g.
Blend is pressed into plate on compression molding instrument, after being cut into dumbbell shape batten, mechanical property is tested: batten length is 75mm with tension tester, width is 4 ± 0.1mm, and thickness is 1 ± 0.1mm, and trial speed is 25mm/min, experiment repetition 6 times, average, obtain the tensile strength of described poly-lactic acid material, elongation at break.The mechanical performance data measured sees the following form 1.
The correlated performance of table 1 poly(lactic acid) and embodiment 1-12
As shown in Table 1, along with adding of PEOz, the melting index of polylactic acid slice material increases gradually, by the 15.4g/10min of pure poly(lactic acid), the maximum 30.2g/10min(of being increased to gathers (2-ethyl-2-oxazoline is 10 weight parts), thus better meets the requirement of spun-bond process spinning to section higher melt flow performance.The tensile strength of Slice material first slightly increases after the adding of PEOz, and then occurs slightly declining.When the PEOz of 200000 molecular weight adds 5 weight part, tensile strength reaches and is 62.7MPa to the maximum, improves about 11.5% than pure poly(lactic acid).
As shown in Table 1, the elongation at break of polylactic acid slice material changes not quite when PEOz content is lower, be greatly improved when PEOz high-content (5-10%), the highlyest brought up to 208.7%, illustrating has comparatively significant toughening effect at the PEOz of high-content to poly(lactic acid).
In addition, known by the contrast of data in table 1, the PEOz of 200000 molecular weight and the PEOz of 50000 molecular weight on the melting index of polylactic acid slice and relevant mechanical property to affect difference very small.
In sum, when poly(lactic acid) is 100 weight part, in the content range that the embodiment of the present invention is reported, by regulating the content of PEOz, the melt index values of polylactic acid slice can be made preferably to reach the numerical range of applicable spunbond one-tenth silk, and while maintenance higher force intensity, significantly improve toughness and the elongation at break of section, can use as the special section of biodegradable polylactic acid spun-bonded non-woven fabrics.
These are only the preferred embodiment cited by the present invention; and be not used to limit the scope of the invention; equivalence that those of ordinary skill in art uses the present invention to do is modified or change goods such as () spun-bonded non-woven fabrics obtained with the present invention, all with belonging to scope of patent protection of the present invention.
For embodiment of the method, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not by the restriction of described sequence of operation, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification sheets all belongs to preferred embodiment, and involved action and parts might not be that the present invention is necessary.
Above a kind of Slice material special for biodegradable non-woven fabric provided by the present invention and preparation method thereof is described in detail, apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (8)
1. a preparation method for Slice material special for biodegradable non-woven fabric, is characterized in that, comprising:
With poly(lactic acid) and PEOz for raw material, under 50 DEG C to 70 DEG C conditions after dry 6 ~ 12h, in mixing facilities, carry out melt blending, obtain described Slice material special for biodegradable non-woven fabric;
Wherein, be as the criterion with poly(lactic acid) 100 weight part, PEOz is 0.5 ~ 10 weight part, the glass transition temperature Tg of described PEOz is 58.6 DEG C, the heat decomposition temperature of described PEOz is 365 ~ 380 DEG C, the number-average molecular weight of described PEOz is 50000 or 200000, temperature time blended is 180 DEG C, the blended time is 3 ~ 8min, and time blended, the rotating speed of described mixing facilities is 30 ~ 100rad/min.
2. method according to claim 1, is characterized in that, is as the criterion with poly(lactic acid) 100 weight part, and PEOz is 10 weight parts.
3. method according to claim 1, is characterized in that, described poly(lactic acid) melting index under the condition of probe temperature 190 DEG C with nominal load 2160g is 15.0g/10min ~ 18.0g/10min.
4. method according to claim 1, is characterized in that, the glass transition temperature Tg of described poly(lactic acid) is 60.5 DEG C.
5. method according to claim 1, is characterized in that, the tensile strength of described poly(lactic acid) is 56.3MPa.
6. method according to claim 1, is characterized in that, the elongation at break of described poly(lactic acid) is 5.6%.
7. method according to claim 1, is characterized in that, described mixing facilities is Banbury mixer.
8. the Slice material special for biodegradable non-woven fabric prepared by method according to any one of claim 1-7, it is characterized in that, with poly(lactic acid) and PEOz for raw material, described Slice material special for biodegradable non-woven fabric melting index under probe temperature is 190 DEG C and nominal load is the condition of 2160g is 18.9 ~ 30.2g/10min, the tensile strength of described Slice material special for biodegradable non-woven fabric is 48.3 ~ 62.7MPa, and the elongation at break of described Slice material special for biodegradable non-woven fabric is 4.8 ~ 208.7%.
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