CN105133081A - Thermal resistant polylactic acid fiber and preparation method thereof - Google Patents
Thermal resistant polylactic acid fiber and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a thermal resistant polylactic acid fiber and a preparation method thereof, and belongs to the technical field of fiber materials. The problem of how to increase the contact probability between PLLA and PDLA molecules is solved, the effect of high thermal resistance is achieved. The fiber is mainly composed of molecule A or molecule B grafted poly L-lactic acid copolymer and molecule A or molecule B grafted poly D-lactic acid copolymer, when grafting molecules in the grafted poly L-lactic acid copolymer and the poly D-lactic acid copolymer are different, the grafting molecules are molecules A or molecules B, and the molecules A are selected from molecules containing double bonds and hydroxide groups or anhydride; the molecules B are selected from molecules containing double bonds, epoxy groups and isocyanate groups. The method comprises the steps that the raw materials are mixed and put into a spinning machine to conduct melt spinning, and the thermal resistant polylactic acid fiber is obtained; higher thermal resistance and melting enthalpy effects are achieved, and the method is simple.
Description
Technical field
The present invention relates to a kind of heat-proof polylactic acid fiber and preparation method thereof, belong to fibrous material technical field.
Background technology
Recent two decades, along with the development of petrochemical industry macromolecular material, bringing people easily simultaneously, its nondegradable characteristic also brings comparatively serious Ecological and environmental problems.And this problem that appears as of degradation plastic provides solution the most thoroughly.The degradation plastic being wherein representative with PLA (PLA) has the serviceability similar to common non-degradable plastics, can be decomposed into again the small-molecule substance of environmental sound after going out of use in the short period of time.But, although, in biodegradable fiber field, PLA can spinning in common melt spinning machine, its fiber and polyster fibre performance comparatively close, but, even if through the PLA fiber (stretching ratio >3 doubly) of higher stretching ratio, its heat resisting temperature is also no more than 120 DEG C, there is the defect of heat contraction distortion like this in dyeing and actual use procedure.Further, because PLA is degradable resin, at high temperature spinning easily produces decomposition, often makes the intensity of material and service life decrease.
Existing poly-lactic acid material, in order to improve heat resistance, also has the heat resistance improving material by adding crystallization nucleating agent, thus improves its application.As Chinese patent application (publication number: CN102409432A) discloses a kind of high heat resistance polylactic acid fiber and preparation method thereof, said composition is made up of PLLA, PDLA and alkyl fatty race salt, it mainly improves the heat resistance of material by adding crystallization nucleating agent, thus make said composition have single melting peak, and fiber has flatiron at 170 DEG C, but because it adds alkyl fatty race salt material, have impact on the overall degradability of PLA.The heat resistance temperature that the appearance of thirty years of age structure crystallization PLA can not only solve PLA fiber provides solution, can make again to have good degradability.Vertical structure crystal is that namely PLLA and PDLA forms jointly by a pair optical isomerism PLA, and because the fusing point of vertical structure crystal exceeds about 50 DEG C than the fusing point of simple PLA, this makes the possibility that on the heat resisting temperature of PLA, existence improves further.But in real process, equal crystalline polyimide and the vertical structure crystallization of PLA have simultaneous possibility, once this thing happens, the performance of material can serious deterioration.
Summary of the invention
The present invention is directed to the defect existed in above prior art, propose a kind of heat-proof polylactic acid fiber and preparation method thereof, the problem of solution is the probability of the Contact how increasing PLLA and PDLA molecule, thus realizes having the high effect of heat resistance.
An object of the present invention is achieved by the following technical programs, a kind of heat-proof polylactic acid fiber, this fiber is primarily of the composition of the poly-D-ALPHA-Hydroxypropionic acid copolymer of molecule A or molecule B grafting poly (l-lactic acid) copolymer and molecule A or molecule B grafting, above-mentioned grafting poly (l-lactic acid) copolymer and grafting gather the molecule of grafting in D-ALPHA-Hydroxypropionic acid copolymer different time be molecule A or molecule B, and described molecule A is selected from containing double bond and molecule also containing hydroxyl or acid anhydrides; Described molecule B is selected from the molecule containing double bond, epoxy radicals and isocyanate group.
The present inventor is by carrying out large quantifier elimination invention to the vertical structure crystallization behavior of PLLA and PDLA and homopolymerization crystallization behavior, by increasing the intermolecular interaction force of PLLA and PDLA, increase the intermolecular contact probability of PLLA and PDLA, can vertical structure crystallization in effectively raising system and effectively can also suppress the generation of equal crystalline polyimide, more be conducive to the formation of vertical structure crystallization, and in order to realize above-mentioned effect, the present inventor by introducing the Small molecular of mutually reactive respectively between PLLA and PDLA molecule, PLLA and PDLA after the corresponding grafting of each self-forming, thus make when being prepared into fiber, chemical reaction can be passed through, form the copolymer being similar to ladder-shaped, the trend of vertical structure crystallization in increase system, such molecular arrangement is conducive to fully contacting of PLLA with PDLA strand, and then generate the acid fiber by polylactic of high vertical structure crystalline content, thus make the acid fiber by polylactic obtained have higher heat resistance, the overall performance effect of material can not be affected again because of the generation of equal crystalline polyimide.
In above-mentioned heat-proof polylactic acid fiber, as preferably, described molecule A is selected from acrylic acid, propenyl or maleic acid.As preferably, described molecule B is selected from glycidyl methacrylate or (3-isocyanate group-4-methyl) carbanilic acid-2-propylene.Grafting is carried out by adopting above-mentioned micromolecular compound, it comprises between corresponding functional group can more effective forming reactions, thus be more conducive to improving the contact probability between PLLA and PDLA molecule, thus be conducive to the formation of vertical structure crystallization, improve the heat resistance of fibrous material and the effect of higher melting enthalpy.
In above-mentioned heat-proof polylactic acid fiber, as preferably, the number-average molecular weight of the poly-D-ALPHA-Hydroxypropionic acid copolymer of described molecule A or molecule B grafting poly (l-lactic acid) copolymer and molecule A or molecule B grafting is independently 5 × 10 separately
4~ 5 × 10
5.Lower molecular weight is conducive to the vertical structure crystallization forming high level, but easily causes the phenomenon such as silk, fracture of wire of wafing in melt spinning process, affect stability of spinning process, and too high molecular weight is unfavorable for being formed vertical structure crystallization, affects the heat resistance of fiber.Therefore, can realize that by adopting the corresponding copolymers of above-mentioned molecular weight both there is higher vertical structure crystalline content, the fiber obtained can be made again to have good stability.
In above-mentioned heat-proof polylactic acid fiber, as preferably, the mass ratio of the poly-D-ALPHA-Hydroxypropionic acid copolymer of described molecule A or molecule B grafting poly (l-lactic acid) copolymer and molecule A or molecule B grafting is 40:60 ~ 60:40.By the usage ratio of adjustment material each composition, can more effective raising between the two in conjunction with effect, meanwhile, the waste of raw material can be reduced again, reduce production cost.
Two of object of the present invention is achieved by the following technical programs, a kind of preparation method of heat-proof polylactic acid fiber, after the method comprises and being mixed by the raw material of the poly-D-ALPHA-Hydroxypropionic acid copolymer of molecule A or molecule B grafting poly (l-lactic acid) copolymer and molecule A or molecule B grafting, put into spinning machine melt spinning, obtain corresponding heat-proof polylactic acid fiber.
The preparation method of heat-proof polylactic acid fiber of the present invention, by using the poly (l-lactic acid) copolymer of Small molecular grafting and poly-D-ALPHA-Hydroxypropionic acid copolymer directly as raw material, and by melt spinning process, forming reactions between Small molecular can be made, thus form the copolymer being similar to ladder-shaped, the trend of vertical structure crystallization in increase system, such molecular arrangement is conducive to fully contacting of PLLA with PDLA strand, and then generate the acid fiber by polylactic of high vertical structure crystalline content, thus the acid fiber by polylactic obtained is made to have higher heat resistance.Thus, make fiber of the present invention not need to increase crystallization nucleating agent etc. in addition and improve heat resistance, also effectively ensure that the degradability of product, be conducive to the protection of environment, reduce the pollution to environment.
In the preparation method of above-mentioned heat-proof polylactic acid fiber, as preferably, the temperature of described spinning is 220 DEG C ~ 260 DEG C.Be not only in order to better spinning, can better react completely between Small molecular simultaneously also in order to more effective guarantee grafting, improve between PLLD and PDLA strand and contact more fully, improve overall vertical structure crystalline content, thus effectively ensure the heat resistance of product and there is higher melting enthalpy.
In the preparation method of above-mentioned heat-proof polylactic acid fiber, as preferably, described heat-proof polylactic acid fiber is at 70 DEG C ~ 140 DEG C stretch orientations, and stretching ratio is 2 ~ 6 times.Effectively can ensure the shrinkage factor of fiber.
In sum, the present invention compared with prior art, has the following advantages:
1. heat-proof polylactic acid fiber of the present invention, by the direct Small molecular introducing mutually reactive between PLLA and PDLA molecule respectively, PLLA and PDLA after the corresponding grafting of each self-forming, the intermolecular interaction force of PLLA and PDLA can be increased, increase the intermolecular contact probability of PLLA and PDLA, thus vertical structure crystallization in effective raising system and can also effectively suppress equal crystalline polyimide, make that there is higher heat resistance and melting enthalpy; And add without the need to the not easily degraded raw material adding crystallization nucleating agent in addition, be more conducive to the degraded of material, decrease the pollution to environment.
2. the preparation method of heat-proof polylactic acid fiber of the present invention, has the simple effect with being easy to operate of technical process; And this method is by the control to spinning temperature, is more conducive to contacting more fully between raising PLLD and PDLA strand, improves overall vertical structure crystalline content, thus effectively ensure the heat resistance of product and there is higher melting enthalpy.
Detailed description of the invention
Below by specific embodiment, technical scheme of the present invention is described in further detail, but the present invention is not limited to these embodiments.
Embodiment 1 ~ 5
The present embodiment 1 ~ 5 Middle molecule A grafting poly (l-lactic acid) copolymer can prepare by the following method:
Poly (l-lactic acid) and molecule A and radical initiator are joined premixed in homogenizer even, then, add in double screw extruder and melt extrude and granulation, melt extrude temperature 170 DEG C ~ 220 DEG C, obtain corresponding molecule A grafting poly (l-lactic acid) copolymer.
In the present embodiment 1 ~ 5, the concrete consumption of each raw material is according to the weight ratio in following table 1:
Table 1:
In above table 1:
The number-average molecular weight of PLLA is 5 × 10
4~ 5 × 10
5;
BPO represents dibenzoyl peroxide;
DCP represents cumyl peroxide;
DTBP represents di-t-butyl peroxide;
AAc represents acrylic acid;
AA1 represents propenyl;
MAH represents maleic acid.
Embodiment 6-10
The present embodiment 6 ~ 10 Middle molecule B grafting gathers D-ALPHA-Hydroxypropionic acid copolymer and can prepare by the following method:
Poly-D-ALPHA-Hydroxypropionic acid and molecule B and radical initiator are joined premixed in homogenizer even, then, add in double screw extruder and melt extrude and granulation, melt extrude temperature 170 DEG C ~ 220 DEG C, obtain corresponding molecule B grafting poly (l-lactic acid) copolymer.
In the present embodiment 6 ~ 10, the concrete consumption of each raw material is according to the weight ratio in following table 2:
Table 2:
In above table 2:
The number-average molecular weight of PDLA is 5 × 10
4~ 5 × 10
5;
BPO represents dibenzoyl peroxide;
DCP represents cumyl peroxide;
DTBP represents di-t-butyl peroxide;
GMA represents glycidyl methacrylate;
TAI represents (3-isocyanate group-4-methyl) carbanilic acid-2-propylene.
Embodiment 11
A kind of acrylic acid-grafted poly-D-ALPHA-Hydroxypropionic acid copolymer, the concrete preparation method of this copolymer is consistent with embodiment 1, repeats no more here, and difference is only the PLLA in embodiment 1 to replace to PDLA, obtains corresponding acrylic acid-grafted poly-D-ALPHA-Hydroxypropionic acid copolymer.
Embodiment 12
A kind of propenyl grafting gathers D-ALPHA-Hydroxypropionic acid copolymer, and the concrete preparation method of this copolymer is consistent with embodiment 2, repeats no more here, and difference is only the PLLA in embodiment 2 to replace to PDLA, obtains corresponding propenyl grafting and gathers D-ALPHA-Hydroxypropionic acid copolymer.
Embodiment 13
A kind of maleic acid grafting gathers D-ALPHA-Hydroxypropionic acid copolymer, and the concrete preparation method of this copolymer is consistent with embodiment 3, repeats no more here, and difference is only the PLLA in embodiment 3 to replace to PDLA, obtains corresponding maleic acid grafting and gathers D-ALPHA-Hydroxypropionic acid copolymer.
Embodiment 14
A kind of glycidyl methacrylate graft poly (l-lactic acid) copolymer, the concrete preparation method of this copolymer is consistent with embodiment 6, here repeat no more, difference is only the PDLA in embodiment 6 to replace to PLLA, obtains corresponding glycidyl methacrylate graft and gathers D-ALPHA-Hydroxypropionic acid copolymer.
Embodiment 15
A kind of (3-isocyanate group-4-methyl) carbanilic acid-2-propylene grafting poly (l-lactic acid) copolymer, the concrete preparation method of this copolymer is consistent with embodiment 7, here repeat no more, difference is only the PDLA in embodiment 7 to replace to PLLA, obtains corresponding glycidyl methacrylate graft and gathers D-ALPHA-Hydroxypropionic acid copolymer.
Embodiment 16
A kind of heat-proof polylactic acid fiber, the composition of poly-D-ALPHA-Hydroxypropionic acid copolymer 50 weight portion of the glycidyl methacrylate graft that its acrylic acid-grafted poly (l-lactic acid) copolymer 50 weight portion obtained primarily of embodiment 1 and embodiment 6 obtain.
Heat-proof polylactic acid fiber in the present embodiment can adopt following methods to prepare:
The raw material of the poly-D-ALPHA-Hydroxypropionic acid copolymer of 50 parts by weight of acrylic acid grafting poly (l-lactic acid) copolymers and 50 weight parts of methacrylic acid ethylene oxidic ester grafting is added in homogenizer after carrying out premixed evenly, then, put into spinning machine melt spinning, wherein the temperature of melt spinning is 235 DEG C, and carry out stretch orientation at 100 DEG C, stretching ratio is 6 times, obtains corresponding heat-proof polylactic acid fiber.
Embodiment 17
A kind of heat-proof polylactic acid fiber, the composition of poly-D-ALPHA-Hydroxypropionic acid copolymer 60 weight portion of (3-isocyanate group-4-methyl) carbanilic acid-2-propylene grafting that its propenyl grafting poly (l-lactic acid) copolymer 40 weight portion obtained primarily of embodiment 2 and embodiment 7 obtain.
Heat-proof polylactic acid fiber in the present embodiment can adopt following methods to prepare:
The raw material of the poly-D-ALPHA-Hydroxypropionic acid copolymer of 40 parts by weight propylene alcohol grafting poly (l-lactic acid) copolymers and 60 weight portions (3-isocyanate group-4-methyl) carbanilic acid-2-propylene grafting is added in homogenizer after carrying out premixed evenly, then, put into spinning machine melt spinning, wherein the temperature of melt spinning is 220 DEG C, and carry out stretch orientation at 70 DEG C, stretching ratio is 3 times, obtains corresponding heat-proof polylactic acid fiber.
Embodiment 18
A kind of heat-proof polylactic acid fiber, the composition of poly-D-ALPHA-Hydroxypropionic acid copolymer 40 weight portion of the glycidyl methacrylate graft that its maleic acid grafting poly (l-lactic acid) copolymer 60 weight portion obtained primarily of embodiment 3 and embodiment 8 obtain.
Heat-proof polylactic acid fiber in the present embodiment can adopt following methods to prepare:
The raw material of the poly-D-ALPHA-Hydroxypropionic acid copolymer of 60 parts by weight of maleic grafting poly (l-lactic acid) copolymers and 40 weight parts of methacrylic acid ethylene oxidic ester grafting is added in homogenizer after carrying out premixed evenly, then, put into spinning machine melt spinning, wherein the temperature of melt spinning is 245 DEG C, and carry out stretch orientation at 110 DEG C, stretching ratio is 5 times, obtains corresponding heat-proof polylactic acid fiber.
Embodiment 19
A kind of heat-proof polylactic acid fiber, the composition of poly-D-ALPHA-Hydroxypropionic acid copolymer 55 weight portion of (3-isocyanate group-4-methyl) carbanilic acid-2-propylene grafting that its acrylic acid-grafted poly (l-lactic acid) copolymer 45 weight portion obtained primarily of embodiment 4 and embodiment 9 obtain.
Heat-proof polylactic acid fiber in the present embodiment can adopt following methods to prepare:
The raw material of the poly-D-ALPHA-Hydroxypropionic acid copolymer of 45 parts by weight of acrylic acid grafting poly (l-lactic acid) copolymers and 55 weight portions (3-isocyanate group-4-methyl) carbanilic acid-2-propylene grafting is added in homogenizer after carrying out premixed evenly, then, put into spinning machine melt spinning, wherein the temperature of melt spinning is 260 DEG C, and carry out stretch orientation at 140 DEG C, stretching ratio is 4 times, obtains corresponding heat-proof polylactic acid fiber.
Embodiment 20
A kind of heat-proof polylactic acid fiber, the composition of poly-D-ALPHA-Hydroxypropionic acid copolymer 50 weight portion of the glycidyl methacrylate graft that its propenyl grafting poly (l-lactic acid) copolymer 50 weight portion obtained primarily of embodiment 5 and embodiment 10 obtain.
Heat-proof polylactic acid fiber in the present embodiment can adopt following methods to prepare:
The raw material of the poly-D-ALPHA-Hydroxypropionic acid copolymer of 50 parts by weight propylene alcohol grafting poly (l-lactic acid) copolymers and 50 weight parts of methacrylic acid ethylene oxidic ester grafting is added in homogenizer after carrying out premixed evenly, then, put into spinning machine melt spinning, wherein the temperature of melt spinning is 240 DEG C, and carry out stretch orientation at 90 DEG C, stretching ratio is 4 times, obtains corresponding heat-proof polylactic acid fiber.
Embodiment 21
A kind of heat-proof polylactic acid fiber, the composition of poly (l-lactic acid) copolymer 50 weight portion of the glycidyl methacrylate graft that its acrylic acid-grafted poly-D-ALPHA-Hydroxypropionic acid copolymer 50 weight portion obtained primarily of embodiment 11 and embodiment 14 obtain.
Heat-proof polylactic acid fiber in the present embodiment can adopt following methods to prepare:
After the raw material 50 parts by weight of acrylic acid grafting being gathered the poly (l-lactic acid) copolymer of D-ALPHA-Hydroxypropionic acid copolymer and 50 weight parts of methacrylic acid ethylene oxidic ester grafting adds in homogenizer and carries out premixed evenly, then, put into spinning machine melt spinning, wherein the temperature of melt spinning is 240 DEG C, and carry out stretch orientation at 90 DEG C, stretching ratio is 4 times, obtains corresponding heat-proof polylactic acid fiber.
Embodiment 22
A kind of heat-proof polylactic acid fiber, it gathers the composition of poly (l-lactic acid) copolymer 60 weight portion of (3-isocyanate group-4-methyl) carbanilic acid-2-propylene grafting that D-ALPHA-Hydroxypropionic acid copolymer 40 weight portion and embodiment 15 obtain primarily of the propenyl grafting that embodiment 12 obtains.
Heat-proof polylactic acid fiber in the present embodiment can adopt following methods to prepare:
After the raw material 40 parts by weight propylene alcohol grafting being gathered the poly (l-lactic acid) copolymer of D-ALPHA-Hydroxypropionic acid copolymer and 60 weight portions (3-isocyanate group-4-methyl) carbanilic acid-2-propylene grafting adds in homogenizer and carries out premixed evenly, then, put into spinning machine melt spinning, wherein the temperature of melt spinning is 220 DEG C, and carry out stretch orientation at 110 DEG C, stretching ratio is 6 times, obtains corresponding heat-proof polylactic acid fiber.
Embodiment 23
A kind of heat-proof polylactic acid fiber, it gathers the composition of poly (l-lactic acid) copolymer 40 weight portion of the glycidyl methacrylate graft that D-ALPHA-Hydroxypropionic acid copolymer 60 weight portion and embodiment 14 obtain primarily of the maleic acid grafting that embodiment 13 obtains.
Heat-proof polylactic acid fiber in the present embodiment can adopt following methods to prepare:
After the raw material 60 parts by weight of maleic grafting being gathered the poly (l-lactic acid) copolymer of D-ALPHA-Hydroxypropionic acid copolymer and 40 weight parts of methacrylic acid ethylene oxidic ester grafting adds in homogenizer and carries out premixed evenly, then, put into spinning machine melt spinning, wherein the temperature of melt spinning is 235 DEG C, and carry out stretch orientation at 120 DEG C, stretching ratio is 3 times, obtains corresponding heat-proof polylactic acid fiber.
Comparative example 1
By 100 weight portion PLLA (number-average molecular weight 8.5*10
4) in melt spinning machine, carrying out spinning, spinning temperature is 230 DEG C and stretches under the condition of 75 DEG C, and stretching ratio is 3 times, obtains PLLA fiber.
Comparative example 2
By 50 weight portion PLLA (number-average molecular weight 8.5*10
4) and 50 parts of PDLA (number-average molecular weight 7.7*10
4) mix in double screw extruder and extrude and granulation, then in melt spinning machine, carry out spinning, spinning temperature is 240 DEG C and stretches under the condition of 85 DEG C, and stretching ratio is 4 times, obtains PLLA/PDLA blended fiber.
The corresponding Zhang Wei that random selecting above-described embodiment 11-15 and comparative example 1 and 2 obtain carries out concrete performance test, and concrete test result is as shown in table 3 below.
Table 3:
In table 3 "-" indicate without.
Specific embodiment described in the present invention is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although made a detailed description the present invention and quoted some specific embodiments as proof, to those skilled in the art, only otherwise it is obvious for leaving that the spirit and scope of the present invention can make various changes or revise.
Claims (8)
1. a heat-proof polylactic acid fiber, it is characterized in that, this fiber gathers the composition of D-ALPHA-Hydroxypropionic acid copolymer primarily of molecule A or molecule B grafting poly (l-lactic acid) copolymer and molecule A or molecule B grafting, above-mentioned grafting poly (l-lactic acid) copolymer and grafting gather the molecule of grafting in D-ALPHA-Hydroxypropionic acid copolymer different time be molecule A or molecule B;
And above-mentioned molecule A is selected from containing double bond and also contains the molecule of hydroxyl or acid anhydrides; Described molecule B is selected from the molecule containing double bond, epoxy radicals and isocyanate group.
2. heat-proof polylactic acid fiber according to claim 1, it is characterized in that, described molecule A is selected from acrylic acid, propenyl or maleic acid.
3. heat-proof polylactic acid fiber according to claim 1 or 2, is characterized in that, described molecule B is selected from glycidyl methacrylate or (3-isocyanate group-4-methyl) carbanilic acid-2-propylene.
4. heat-proof polylactic acid fiber according to claim 3, it is characterized in that, the number-average molecular weight of the poly-D-ALPHA-Hydroxypropionic acid copolymer of described molecule A or molecule B grafting poly (l-lactic acid) copolymer and molecule A or molecule B grafting is independently 5 × 10 separately
4~ 5 × 10
5.
5. heat-proof polylactic acid fiber according to claim 3, it is characterized in that, the mass ratio of the poly-D-ALPHA-Hydroxypropionic acid copolymer of described molecule A or molecule B grafting poly (l-lactic acid) copolymer and molecule A or molecule B grafting is 40:60 ~ 60:40.
6. the preparation method as claim 1-5 any one heat-proof polylactic acid fiber, it is characterized in that, after the method comprises and being mixed by the raw material of the poly-D-ALPHA-Hydroxypropionic acid copolymer of molecule A or molecule B grafting poly (l-lactic acid) copolymer and molecule A or molecule B grafting, put into spinning machine melt spinning, obtain corresponding heat-proof polylactic acid fiber.
7. the preparation method of heat-proof polylactic acid fiber according to claim 6, it is characterized in that, the temperature of described spinning is 220 DEG C ~ 260 DEG C.
8. the preparation method of heat-proof polylactic acid fiber according to claim 7, it is characterized in that, described heat-proof polylactic acid fiber is at 70 DEG C ~ 140 DEG C stretch orientations, and stretching ratio is 2 ~ 6 times.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008120807A1 (en) * | 2007-03-30 | 2008-10-09 | Teijin Limited | Polylactic acid composition and fiber composed of the same |
| CN101522798A (en) * | 2006-06-01 | 2009-09-02 | 东赛璐株式会社 | Moldings of polylactic acid compositions |
| CN101805941A (en) * | 2010-04-13 | 2010-08-18 | 东华大学 | Preparation method of polylactic acid fiber with high melting point |
| CN102634866A (en) * | 2012-04-25 | 2012-08-15 | 中国科学院宁波材料技术与工程研究所 | Self-enhanced polylactic acid fiber and preparation method thereof |
| CN103965493A (en) * | 2014-05-09 | 2014-08-06 | 四川大学 | Method for preparing high molecular weight vertical structure composite polylactic acid with melt stability characteristics |
| CN103965595A (en) * | 2014-04-18 | 2014-08-06 | 浙江海正生物材料股份有限公司 | Poly lactic acid stereocomplex with interpenetrating network structure and preparation method thereof |
-
2015
- 2015-10-21 CN CN201510689295.2A patent/CN105133081B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101522798A (en) * | 2006-06-01 | 2009-09-02 | 东赛璐株式会社 | Moldings of polylactic acid compositions |
| WO2008120807A1 (en) * | 2007-03-30 | 2008-10-09 | Teijin Limited | Polylactic acid composition and fiber composed of the same |
| CN101805941A (en) * | 2010-04-13 | 2010-08-18 | 东华大学 | Preparation method of polylactic acid fiber with high melting point |
| CN102634866A (en) * | 2012-04-25 | 2012-08-15 | 中国科学院宁波材料技术与工程研究所 | Self-enhanced polylactic acid fiber and preparation method thereof |
| CN103965595A (en) * | 2014-04-18 | 2014-08-06 | 浙江海正生物材料股份有限公司 | Poly lactic acid stereocomplex with interpenetrating network structure and preparation method thereof |
| CN103965493A (en) * | 2014-05-09 | 2014-08-06 | 四川大学 | Method for preparing high molecular weight vertical structure composite polylactic acid with melt stability characteristics |
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