CN103437092A - Method for modifying flax yarns via crystal lattice change and for weaving flax fabric - Google Patents
Method for modifying flax yarns via crystal lattice change and for weaving flax fabric Download PDFInfo
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- CN103437092A CN103437092A CN2013103205899A CN201310320589A CN103437092A CN 103437092 A CN103437092 A CN 103437092A CN 2013103205899 A CN2013103205899 A CN 2013103205899A CN 201310320589 A CN201310320589 A CN 201310320589A CN 103437092 A CN103437092 A CN 103437092A
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Abstract
The invention relates to a method for modifying flax yarns via crystal lattice change and for weaving a flax fabric. The method comprises the following steps: putting flax yarns into an enclosed container, filling a modification medium, boosting to a modification pressure, releasing pressure momentarily and removing the modification medium to obtain flax yarns modified via crystal lattice change; intersecting, crossing or bonding the flax yarns modified via crystal lattice change to obtain the flax fabric. Due to the adoption of the technical scheme, the method has the advantages that 1, the aim of modifying is fulfilled by changing a crystal lattice structure, and the size stability, softness, dyeing performance and the like of a product are enhanced; 2, a method for releasing pressure momentarily is adopted, so that modified yarns expand to the maximum extent, and the bulkiness and softness of the yarns are enhanced greatly; 3, the flax fabric woven by using the flax yarns modified via crystal lattice change has the advantages of increased pores, lower degree of crystallization and yarn softness, and the spinning, weaving and dyeing performance of the fabric is enhanced greatly.
Description
Technical field
The present invention relates to a kind of brilliant method that becomes modification and weave sodolin of linen thread and yarn, specifically a kind of by the crystalline substance change modification linen thread and yarn that the modification medium is pressurized to modifier pressure and after pressurize a period of time, abrupt release pressure obtains, and this crystalline substance is become to the method that modified yarn is made into sodolin.
Background technology
Linen thread and yarn is textile raw material important in natural yarn, is the larger yarn of Young's modulus in natural yarn.Its hygroscopicity is good, static is little, warmth retention property is strong, the heat-resisting advantage of anti-corruption, but also exist hard, send out that wrinkle, shrink, difficulty are spun, difficulty is knitted, difficulty is dyed defect, cause the sodolin wearability that weaves poor, be difficult for making high-end textile material, the overwhelming majority is low value-added product.
In order to change above-mentioned present situation, existing a variety of method of modifying, as physical modification method, chemical modification method and biological modified method.It is processing modified etc. that physical modification method mainly comprises that discharge technology modification, high steam dodge quick-fried modification, ultrasonic cavitation and microwave irradiation modification, liquefied ammonia.Chemical modification method mainly comprises esters modification, ethers modification, graft modification and cross-linking modified etc.
The method of modifying that has formed now industrialization production both at home and abroad mainly contains the processing modified and alkali mercerized modification of liquefied ammonia.Liquid ammonia modified and alkali mercerized processing has similar effect, as characteristics such as natural crimp disappear, cross section becomes circle, inner chamber diminishes, but the residual alkali lye of alkali mercerized modification is difficult for removing and also can cause yarn to melt erosion and inhomogeneities, and topmost difference is that liquid ammonia modified effect is better than alkali mercerized modification.The domestic liquefied ammonia that utilizes is as the modification medium, in the collect yarn of boost-pressurize of routine in closed container-again, the method for modification medium has certain effect to cotton, but the effect to linen thread and yarn is poor, the method is modification for once, the swelling that makes the sodolin woven not thoroughly, degree of crystallinity reduce not obvious, dyeability do not have be improved significantly.
Summary of the invention
The present invention relates to a kind of brilliant method that becomes modification and weave sodolin of linen thread and yarn, specifically a kind of by the crystalline substance change modification linen thread and yarn that the modification medium is pressurized to modifier pressure and after pressurize a period of time, abrupt release pressure obtains, and this crystalline substance is become to the method that modified yarn is made into sodolin.
The brilliant method that becomes modification and weave sodolin of a kind of linen thread and yarn of the present invention, be that the linen thread and yarn be modified is placed in to closed container, is filled with the modification medium, boost to modifier pressure, then abrupt release pressure, remove the modification medium, obtains the brilliant modification linen thread and yarn that becomes.Crystalline substance is become to the modification linen thread and yarn and by mutual intersection, mutual string cover and bonding mode, be made into sodolin.Its principle is: linen thread and yarn is placed in to closed container, movable sealing under the under high pressure movable sealing of this closed container and negative pressure, and zero leakage.By pressure balance topping up and non-equilibrium constant speed topping up, can regulate the flow, time and the temperature that are filled with modification medium in closed container, thereby the rate of change of pressure, two-phase interface and the above-mentioned parameter of regulation and control modification, and then the running parameters such as permeability, infiltration rate and evaporation rate of regulation and control liquid medium; Regulate the dwell time of modifier pressure simultaneously; Above-mentioned technique can make the diffusion coefficient of modification medium improve, the modification medium is penetrated in the yarn tissue preferably, the intermolecular hydrogen bond network of reconstruct yarn, changed the microstructure of yarn, the motion of aggravation macromolecular chain segment, make the intermolecular generation swelling action of yarn, and hole increases, degree of crystallinity reduces, and has realized the once regulation and control of yarn lattice structure.Again by the high speed overflow, a large amount of liquid modified media in the abrupt release closed container, produce huge pressure reduction in yarn organization internal and outside moment, form high speed quick-fried swollen, the diffusion coefficient of modification medium significantly improved, Perfect Reconstruction the intermolecular hydrogen bond network of yarn, the intermolecular swelling action of yarn is more thorough, hole increases obviously, and degree of crystallinity significantly reduces, and has realized the secondary regulation and control of yarn lattice structure.Then adopt heating and vacuumize parallel method of evaporating and remove the modification medium in material, obtained brilliant change modification linen thread and yarn.Finally crystalline substance is become to the modification linen thread and yarn and be made into sodolin by mutual intersection, mutual string cover and bonding mode.Brilliant become after modification linen thread and yarn to have softness good, wrinkle resistant nonshrink, durable fluffy, sodolin significantly improved spin, knit, the metachromia energy.
As preferred technical scheme:
The brilliant method that becomes modification and weave sodolin of a kind of linen thread and yarn as above, the fineness of described linen thread and yarn is 5～120; The thread count of described sodolin is 100～600/10cm.
The brilliant method that becomes modification and weave sodolin of a kind of linen thread and yarn as above, by twice intermolecular hydrogen bond network of reconstruct yarn, the secondary regulation and control of yarn lattice structure have been realized, make the intermolecular swelling action of yarn more thorough, hole obviously increases, and degree of crystallinity obviously reduces, and dye-uptake improves, COLOR FASTNESS improves, and then adopts heating and vacuumize parallel method of evaporating to remove the modification medium in material.Finally crystalline substance is become to the modification linen thread and yarn and be made into sodolin by mutual intersection, mutual string cover and bonding mode.Adopt the described brilliant method of modifying that becomes, the crystalline substance that can make to obtain becomes the sodolin microcosmic lattice that the modification linen thread and yarn is made into to be compared with unmodified sodolin microcosmic lattice, and hole increases 10%～15%, and degree of crystallinity reduces 13%～22%; The sodolin that described brilliant change modification linen thread and yarn is made into is compared with unmodified sodolin, and dye-uptake improves 22%～35%, and COLOR FASTNESS improves 16%～25%.
The brilliant method that becomes modification and weave sodolin of a kind of linen thread and yarn as above, the modification medium is liquefied ammonia; The modification medium need possess following 3 features: 1) have good diffusivity; 2) form a large amount of hydrogen bonds between energy and yarn, the intermolecular hydrogen bond network of reconstruct yarn, the swelling behavior of raising yarn; 3) be easy to the phase transformation regulation and control, be convenient to the evaporation of modification medium and reclaim.And liquefied ammonia has, molecular weight is little, viscosity is little, surface tension is little, be easy to the special physical propertys such as phase transformation, and these special natures make liquefied ammonia meet above-mentioned three features.
The brilliant method that becomes modification and weave sodolin of a kind of linen thread and yarn as above, the modifier pressure abrupt release, moment produces larger pressure differential, can significantly improve the diffusion coefficient of modification medium, making linen thread and yarn produce abundant swelling, is the brilliant critical process process that becomes modification.To different linen thread and yarns, the modifier pressure difference of requirement, the speed difference of earth pressure release, the pressure differential difference that moment produces, under the prerequisite that does not improve modifier pressure, obtain high as far as possible release pressure poor, should make modifier pressure drop to negative pressure.To linen thread and yarn, modifier pressure need to be more than or equal to 1.2MPa, can reach 2MPa.Therefore described modifier pressure should be 1.2～2MPa.Poor for obtaining high as far as possible release pressure, should make modifier pressure drop to negative pressure, so the abrupt release of modifier pressure, require modifier pressure moment drop to modifier pressure 1% and below.
The brilliant method that becomes modification and weave sodolin of a kind of linen thread and yarn as above, for the standard technological standards, described pressure refers to absolute pressure.
The brilliant method that becomes modification and weave sodolin of a kind of linen thread and yarn as above, obtain good swelling effect, 1% the time that requires pressure to drop to modifier pressure from modifier pressure is less than or equal to 3.0 seconds and gets final product, at 1 second～3 seconds, be advisable, therefore the moment of described release pressure is 1 second～3 seconds, and the rate of pressure reduction of corresponding described release pressure is 0.5MPa/s～3MPa/s.
The brilliant method that becomes modification and weave sodolin of a kind of linen thread and yarn as above, for obtaining good diffusivity and the best modified effect of modification medium, and the modifying process energy consumes minimum, the flow, time and the temperature that need ammoniacal liquor in regulation and control topping up process, reach the purpose of regulation and control pressure, and then regulation and control medium permeability, infiltration rate, evaporation rate, evaporation rate and phase transition process.And the process of boosting is one of most important influence factor, need adopt the different processes of boosting to different yarns, a large number of experiments show that: linen thread and yarn is applicable to boosting by linearity, and rate of pressure rise k meets relational expression
wherein t is pressure rising time, k
0for initial rate of pressure rise; For linen thread and yarn, initial rate of pressure rise k
0be not less than 0.5MPa/min, can reach 1MPa/min, therefore described initial rate of pressure rise k
0in 0.5MPa/min～1MPa/min scope.
The brilliant method that becomes modification and weave sodolin of a kind of linen thread and yarn as above, in modifying process, rear pressurize a period of time of boosting is for the modification medium can be penetrated in the yarn institutional framework more fully, better completes the intermolecular hydrogen bond network reconstruct of yarn.This process is all necessary to the crystalline substance change modification of all yarns.To linen thread and yarn, the rear pressurize 1min that boosts is above to be got final product, and the dwell time is advisable at 1～10min, and therefore the described rear dwell time of boosting is 1～10min.
The brilliant method that becomes modification and weave sodolin of a kind of linen thread and yarn as above, after twice reconstruct of the intermolecular hydrogen bond network of yarn, remove the modification medium technical process that is absolutely necessary, this process does not affect the lattice structure of yarn, but how high efficiency, low energy consumption, this process that completes pollution-free, zero-emission are to realize the key factor of large-scale industrial production, this will directly affect the brilliant vitality that becomes method of modifying, about how high efficiency, low energy consumption, pollution-free, zero-emission complete this process again separate case write the series of patents statement.Remove the modification medium described in this case and remove the modification medium in material for adopting heating and vacuumizing parallel method of evaporating.
Beneficial effect:
The present invention adopts the advantage of above technical scheme as follows:
1, the present invention reaches the modification purpose by changing lattice structure, and the yarn after modification overcomes its native defect, and hole increases, degree of crystallinity reduces, soft yarns, improved DIMENSIONAL STABILITY, flexibility and the dyeability etc. of product.
2, the present invention adopts the method for abrupt release pressure, makes the yarn after modification farthest expand, and has significantly improved bulkiness and the flexibility of yarn.
3, the sodolin that the linen thread and yarn of the present invention after by modification is made into, significantly improved the spinning of fabric, knitted, the metachromia energy.
The specific embodiment
Below in conjunction with the specific embodiment, further set forth the present invention.Should be understood that these embodiment only are not used in and limit the scope of the invention for the present invention is described.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Embodiment 1
A kind of brilliant method that becomes modification and weave sodolin of linen thread and yarn, be placed in closed container by 5 count linen yarn lines, is filled with liquefied ammonia, by linear boosting mode, boosts, and rate of pressure rise k meets relational expression
initial rate of pressure rise k
0for 0.5MPa/min, to modifier pressure 1.2Mpa, pressurize 1min, then in 5 seconds with the rate of pressure reduction abrupt release of 0.5MPa/s to 0.0012Mpa, then adopt heating and vavuum pump to vacuumize parallel method of evaporating and remove the modification medium, until in closed container, pressure is reduced to 133Pa, now obtain the brilliant modification linen thread and yarn that becomes, finally, by one group of warp thread and one group of weft yarn crisscross sodolin that is made on loom of mutual square crossing, the sodolin be made into is 5 * 5,150/10cm * 100/10cm.The fabric microcosmic lattice that described brilliant change modification linen thread and yarn is made into is compared with described unmodified sodolin microcosmic lattice, and hole increases 10%, and degree of crystallinity reduces 13%; The fabric that described brilliant change modification linen thread and yarn is made into is compared with unmodified sodolin, and dye-uptake improves 22%, and COLOR FASTNESS improves 16%.
Embodiment 2
A kind of brilliant method that becomes modification and weave sodolin of linen thread and yarn, be placed in closed container by 32 count linen yarn lines, is filled with liquefied ammonia, by linear boosting mode, boosts, and rate of pressure rise k meets relational expression
initial rate of pressure rise k
0for 0.8MPa/min, to modifier pressure 1.5Mpa, pressurize 1min, then in 3 seconds with the rate of pressure reduction abrupt release of 1MPa/s to 0.0015Mpa, then adopt heating and vavuum pump to vacuumize parallel method of evaporating and remove the modification medium, until in closed container, pressure is reduced to 133Pa, now obtain the brilliant modification linen thread and yarn that becomes, finally, by one group of yarn string cover lopping sodolin that is formed by connecting each other on knitting machine, the sodolin be made into is 32 * 32,220/10cm * 156/10cm.The fabric microcosmic lattice that described brilliant change modification linen thread and yarn is made into is compared with described unmodified sodolin microcosmic lattice, and hole increases 12%, and degree of crystallinity reduces 15%; The fabric that described brilliant change modification linen thread and yarn is made into is compared with unmodified sodolin, and dye-uptake improves 30%, and COLOR FASTNESS improves 19%.
Embodiment 3
A kind of brilliant method that becomes modification and weave sodolin of linen thread and yarn, be placed in closed container by 40 count linen yarn lines, is filled with liquefied ammonia, by linear boosting mode, boosts, and rate of pressure rise k meets relational expression
initial rate of pressure rise k
0for 1MPa/min, to modifier pressure 1.5Mpa, pressurize 5min, then in 2 seconds with the rate of pressure reduction abrupt release of 1MPa/s to 0.0015Mpa, then adopt heating and vavuum pump to vacuumize parallel method of evaporating and remove the modification medium, until in closed container, pressure is reduced to 133Pa, now obtain the brilliant modification linen thread and yarn that becomes, finally by mechanical method, make it bonding and form sodolin, the sodolin be made into is 40 * 40,504/10cm * 236/10cm.The fabric microcosmic lattice that described brilliant change modification linen thread and yarn is made into is compared with described unmodified sodolin microcosmic lattice, and hole increases 13%, and degree of crystallinity reduces 20%; The fabric that described brilliant change modification linen thread and yarn is made into is compared with unmodified sodolin, and dye-uptake improves 32%, and COLOR FASTNESS improves 20%.
Embodiment 4
A kind of brilliant method that becomes modification and weave sodolin of linen thread and yarn, be placed in closed container by 120 count linen yarn lines, is filled with liquefied ammonia, by linear boosting mode, boosts, and rate of pressure rise k meets relational expression
initial rate of pressure rise k
0for 1MPa/min, to modifier pressure 2Mpa, pressurize 10min, then in 1 second with the rate of pressure reduction abrupt release of 3MPa/s to 0.002Mpa, then adopt heating with vacuumize that parallel method of evaporating is removed the modification medium until in closed container pressure reduce to 133Pa, now obtain the brilliant modification linen thread and yarn that becomes, finally, by one group of warp thread and one group of weft yarn crisscross sodolin that is made on loom of mutual square crossing, the sodolin be made into is 120 * 120,600/10cm * 600/10cm.The fabric microcosmic lattice that described brilliant change modification linen thread and yarn is made into is compared with described unmodified sodolin microcosmic lattice, and hole increases 15%, and degree of crystallinity reduces 22%; The fabric that described brilliant change modification linen thread and yarn is made into is compared with unmodified sodolin, and dye-uptake improves 35%, and COLOR FASTNESS improves 25%.
Embodiment 5
A kind of brilliant method that becomes modification and weave sodolin of linen thread and yarn, be placed in respectively closed container by 32 and 36 count linen yarn lines, is filled with liquefied ammonia, by linear boosting mode, boosts, and rate of pressure rise k meets relational expression
initial rate of pressure rise k
0for 1MPa/min, to modifier pressure 1.5Mpa, pressurize 5min, then in 1 second with the rate of pressure reduction abrupt release of 1.5MPa/s to 0.0015Mpa, then adopt heating with vacuumize that parallel method of evaporating is removed the modification medium until in closed container pressure reduce to 133Pa, now obtain the brilliant modification linen thread and yarn that becomes, finally, by one group of warp thread and one group of weft yarn crisscross sodolin that is made on loom of mutual square crossing, the sodolin be made into is 32 * 36,535/10cm * 400/10cm.The fabric microcosmic lattice that described brilliant change modification linen thread and yarn is made into is compared with described unmodified sodolin microcosmic lattice, and hole increases 15%, and degree of crystallinity reduces 20%; The fabric that described brilliant change modification linen thread and yarn is made into is compared with unmodified sodolin, and dye-uptake improves 30%, and COLOR FASTNESS improves 22%.
Claims (10)
1. the brilliant method that becomes modification and weave sodolin of linen thread and yarn, is characterized in that: linen thread and yarn is placed in to closed container, is filled with the modification medium, boost to modifier pressure, then abrupt release pressure, remove the modification medium, obtains the brilliant modification linen thread and yarn that becomes; The described brilliant modification linen thread and yarn that becomes is made into to sodolin by mutual intersection, mutual string cover or bonding mode.
2. the brilliant method that becomes modification and weave sodolin of a kind of linen thread and yarn according to claim 1, is characterized in that, the fineness of described linen thread and yarn is 5～120; The thread count of described sodolin is 100～600/10cm.
3. the method that a kind of linen thread and yarn crystalline substance according to claim 1 becomes modification and weaves sodolin, it is characterized in that, the sodolin microcosmic lattice that described brilliant change modification linen thread and yarn is made into is compared with unmodified sodolin microcosmic lattice, hole increases 10%～15%, and degree of crystallinity reduces 13%～22%; The sodolin that described brilliant change modification linen thread and yarn is made into is compared with unmodified sodolin, and dye-uptake improves 22%～35%, and COLOR FASTNESS improves 16%～25%.
4. the brilliant method that becomes modification and weave sodolin of a kind of linen thread and yarn according to claim 1, is characterized in that, described modification medium is liquefied ammonia.
5. the brilliant method that becomes modification and weave sodolin of a kind of linen thread and yarn according to claim 1, is characterized in that, described modifier pressure P is 1.2～2MPa, described abrupt release pressure refer to pressure moment drop to described modifier pressure 1% and below.
6. the brilliant method that becomes modification and weave sodolin of a kind of linen thread and yarn according to claim 5, is characterized in that, described pressure is absolute pressure.
7. a kind of brilliant method that becomes modification and weave sodolin of linen thread and yarn according to claim 1 or 5, is characterized in that, described moment refers to 1 second～and 3 seconds, the rate of pressure reduction of described release pressure is 0.5MPa/s～3MPa/s.
8. the brilliant method that becomes modification and weave sodolin of a kind of linen thread and yarn according to claim 1, is characterized in that, described boosting boosted for linearity, and rate of pressure rise k meets relational expression
wherein t is pressure rising time, k
0for initial rate of pressure rise, k
0for 0.5MPa/min～1MPa/min.
9. the brilliant method that becomes modification and weave sodolin of a kind of linen thread and yarn according to claim 1, is characterized in that, rear maintenance 1min～10min boosts.
10. the brilliant method that becomes modification and weave sodolin of a kind of linen thread and yarn according to claim 1, is characterized in that, described removal modification medium is removed the modification medium in linen thread and yarn for adopting heating and vacuumizing parallel method of evaporating.
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| CN201310320589.9A CN103437092B (en) | 2013-07-26 | 2013-07-26 | A kind of linen thread and yarn crystalline substance becomes modification and weaves the method for sodolin |
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| CN201310320589.9A CN103437092B (en) | 2013-07-26 | 2013-07-26 | A kind of linen thread and yarn crystalline substance becomes modification and weaves the method for sodolin |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104611812A (en) * | 2014-11-19 | 2015-05-13 | 浙江国诚麻纺织有限公司 | Novel cotton-feeling linen producing technology |
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| CN102704095A (en) * | 2012-06-11 | 2012-10-03 | 东华大学 | Method for spinning high-grade knitting yarns by using long flax fibers |
| CN102839508A (en) * | 2012-09-06 | 2012-12-26 | 东华大学 | High-grade flax fabric weaving method based on crystallized and modified flax yarns |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704095A (en) * | 2012-06-11 | 2012-10-03 | 东华大学 | Method for spinning high-grade knitting yarns by using long flax fibers |
| CN102839508A (en) * | 2012-09-06 | 2012-12-26 | 东华大学 | High-grade flax fabric weaving method based on crystallized and modified flax yarns |
Non-Patent Citations (1)
| Title |
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| 吴君南: "闪爆处理对大麻纤维结构与性能的影响", 《纺织学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104611812A (en) * | 2014-11-19 | 2015-05-13 | 浙江国诚麻纺织有限公司 | Novel cotton-feeling linen producing technology |
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