CN103437092B - A kind of linen thread and yarn crystalline substance becomes modification and weaves the method for sodolin - Google Patents
A kind of linen thread and yarn crystalline substance becomes modification and weaves the method for sodolin Download PDFInfo
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- CN103437092B CN103437092B CN201310320589.9A CN201310320589A CN103437092B CN 103437092 B CN103437092 B CN 103437092B CN 201310320589 A CN201310320589 A CN 201310320589A CN 103437092 B CN103437092 B CN 103437092B
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Abstract
The present invention relates to a kind of linen thread and yarn crystalline substance become modification and weave the method for sodolin, be that linen thread and yarn is placed in closed container, be filled with modification medium, boost to modifier pressure, then abrupt release pressure, removes modification medium, namely obtains brilliant change modification linen thread and yarn.String cover or bonding mode are made into sodolin by mutually intersecting, mutually crystalline substance to be become modification linen thread and yarn.The present invention adopts the advantage of above technical scheme as follows: 1, reaching modification object by changing lattice structure, improve the DIMENSIONAL STABILITY of product, flexibility and dyeability etc.2, adopt the method for abrupt release pressure, modified yarn is farthest expanded, significantly improves bulkiness and the flexibility of yarn.3, by the brilliant sodolin becoming modification linen thread and yarn and be made into, hole increases, degree of crystallinity reduces, soft yarns, greatly improves the spinning of fabric, knits, metachromia energy.
Description
Technical field
The present invention relates to a kind of linen thread and yarn crystalline substance become modification and weave the method for sodolin, specifically by modification medium being pressurized to modifier pressure and the crystalline substance change modification linen thread and yarn that after pressurize a period of time, abrupt release pressure obtains, and this brilliant change modified yarn is made into the method for sodolin.
Background technology
Linen thread and yarn is textile raw material important in natural yarn, is the yarn that in natural yarn, Young's modulus is larger.Its hygroscopicity is excellent, electrostatic is little, warmth retention property is strong, the heat-resisting advantage of anti-corruption, but also exist hard, send out wrinkle, shrink, difficulty is spun, difficulty is knitted, difficult dye defect, cause the sodolin wearability that weaves poor, not easily make 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.Physical modification method mainly comprises discharge technology modification, high steam dodges quick-fried modification, ultrasonic cavitation and microwave irradiation modification, liquefied ammonia are processing modified etc.Chemical modification method mainly comprises esters modification, ethers modification, graft modification and cross-linking modified etc.
The method of modifying having 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 process has similar effect, as features such as natural crimp disappearance, cross section change circle, inner chamber diminish, but the residual alkali lye of alkali mercerized modification is not easily removed and yarn also can be caused 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 modification medium, in the collect yarn of conventional boosting-pressurize in closed container-again, the method for modification medium has certain effect to cotton, but it is poor to the effect of linen thread and yarn, the method is modification for once, make the sodolin woven swelling 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 linen thread and yarn crystalline substance become modification and weave the method for sodolin, specifically by modification medium being pressurized to modifier pressure and the crystalline substance change modification linen thread and yarn that after pressurize a period of time, abrupt release pressure obtains, and this brilliant change modified yarn is made into the method for sodolin.
A kind of linen thread and yarn crystalline substance of the present invention becomes modification and weaves the method for sodolin, is that the linen thread and yarn be modified is placed in closed container, is filled with modification medium, boost to modifier pressure, then abrupt release pressure, removes modification medium, namely obtains brilliant change modification linen thread and yarn.String cover and bonding mode are made into sodolin by mutually intersecting, mutually crystalline substance to be become modification linen thread and yarn.Its principle is: linen thread and yarn is placed in closed container, and this closed container can movable sealing under under high pressure movable sealing and negative pressure, and zero leakage.By pressure balance topping up and non-equilibrium constant speed topping up, adjustable be filled with modification medium in closed container flow, time and temperature, thus the rate of change of the regulation and control pressure of modification, two-phase interface and above-mentioned parameter, and then the running parameter such as the permeability of regulation and control liquid medium, infiltration rate and evaporation rate; Regulate the dwell time of modifier pressure simultaneously; Above-mentioned technique can make the diffusion coefficient of modification medium improve, modification medium penetrates in yarn tissue preferably, the intermolecular hydrogen bond network of reconstruct yarn, change the microstructure of yarn, the motion of aggravation macromolecular chain segment, make the intermolecular generation swelling action of yarn, hole increases, degree of crystallinity reduces, and achieves the once regulation and control of yarn lattice structure.Again by high speed overflow, a large amount of liquid modified medium in abrupt release closed container, huge pressure reduction is produced instantaneously at yarn organization internal and outside, form high speed quick-fried swollen, the diffusion coefficient of modification medium is significantly improved, Perfect Reconstruction yarn intermolecular hydrogen bond network, the intermolecular swelling action of yarn is more thorough, hole increases obviously, and degree of crystallinity significantly reduces, and achieves the secondary regulation and control of yarn lattice structure.Then adopt heating and vacuumize the modification medium in parallel method of evaporating removal material, namely obtain brilliant change modification linen thread and yarn.String cover and bonding mode are made into sodolin by mutually intersecting, mutually finally crystalline substance to be become modification linen thread and yarn.Brilliant become modified linen thread and yarn to have softness excellent, wrinkle resistant nonshrink, durable fluffy, sodolin significantly improve spin, knit, metachromia energy.
As preferred technical scheme:
A kind of linen thread and yarn crystalline substance as above becomes modification and weaves the method for sodolin, and the fineness of described linen thread and yarn is 5 ~ 120; The thread count of described sodolin is 100 ~ 600/10cm.
A kind of linen thread and yarn crystalline substance as above becomes modification and weaves the method for sodolin, by twice intermolecular hydrogen bond network of reconstruct yarn, achieve the secondary regulation and control of yarn lattice structure, 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 vacuumizes the modification medium in parallel method of evaporating removal material.String cover and bonding mode are made into sodolin by mutually intersecting, mutually finally crystalline substance to be become modification linen thread and yarn.Crystalline substance described in employing becomes method of modifying, and the crystalline substance of acquisition can be made to become sodolin microcosmic lattice that modification linen thread and yarn is made into is compared with unmodified sodolin microcosmic lattice, and hole increases 10% ~ 15%, and degree of crystallinity reduces 13% ~ 22%; The sodolin that described crystalline substance 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%.
A kind of linen thread and yarn crystalline substance as above becomes modification and weaves the method for sodolin, and modification medium is liquefied ammonia; Modification medium need possess following three point patterns: 1) have excellent diffusivity; 2) form a large amount of hydrogen bonds between energy and yarn, the intermolecular hydrogen bond network of reconstruct yarn, improves the swelling behavior of yarn; 3) be easy to phase transformation regulation and control, be convenient to modification medium evaporation and reclaim.And liquefied ammonia has, and molecular weight is little, viscosity is little, surface tension is little, be easy to the special physical property such as phase transformation, these special natures make liquefied ammonia meet above-mentioned three features.
A kind of linen thread and yarn crystalline substance as above becomes modification and weaves the method for sodolin, modifier pressure abrupt release, produces larger pressure differential instantaneously, significantly can improve the diffusion coefficient of modification medium, linen thread and yarn being produced fully swelling, is the brilliant critical process process becoming modification.To different linen thread and yarns, the modifier pressure of requirement is different, and the speed of earth pressure release is different, and the pressure differential produced instantaneously is different, under the prerequisite not improving modifier pressure, obtain release pressure high as far as possible poor, modifier pressure should be made to drop to negative pressure.To linen thread and yarn, modifier pressure needs 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, modifier pressure should be made to drop to negative pressure, therefore the abrupt release of modifier pressure, require modifier pressure drop to instantaneously modifier pressure 1% and below.
A kind of linen thread and yarn crystalline substance as above becomes modification and weaves the method for sodolin, and in order to specification technological standards, described pressure refers to absolute pressure.
A kind of linen thread and yarn crystalline substance as above becomes modification and weaves the method for sodolin, obtain excellent swelling effect, require that the time that pressure drops to 1% of modifier pressure from modifier pressure is less than or equal to 3.0 seconds, be advisable at 1 second ~ 3 seconds, 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.
A kind of linen thread and yarn crystalline substance as above becomes modification and weaves the method for sodolin, for obtaining the good diffusivity of modification medium and best modified effect, and modifying process energy ezpenditure is minimum, need to regulate and control the flow of ammoniacal liquor in filling process, time and temperature, reach the object of regulation and control pressure, and then regulation and control medium permeability, infiltration rate, evaporation rate, evaporation rate and phase transition process.And boost process is one of most important influence factor, different boost process need be adopted to different yarns, a large number of experiments show that: linen thread and yarn is applicable to linear boosting, and rate of pressure rise k meets relational expression
wherein t is pressure rising time, k
0for initial boost speed; For linen thread and yarn, initial boost speed k
0be not less than 0.5MPa/min, can 1MPa/min be reached, therefore described initial boost speed k
0within the scope of 0.5MPa/min ~ 1MPa/min.
A kind of linen thread and yarn crystalline substance as above becomes modification and weaves the method for sodolin, in modifying process, after boosting, pressurize a period of time is to make modification medium can penetrate into more fully in yarn institutional framework, better completes the intermolecular hydrogen bond network reconstruct of yarn.It is all necessary that this process becomes modification to the crystalline substance of all yarns.To linen thread and yarn, more than pressurize 1min after boosting, the dwell time is advisable at 1 ~ 10min, and therefore after described boosting, the dwell time is 1 ~ 10min.
A kind of linen thread and yarn crystalline substance as above becomes modification and weaves the method for sodolin, after twice reconstruct of the intermolecular hydrogen bond network of yarn, remove modification medium to be absolutely necessary technical process, this process does not affect the lattice structure of yarn, but how high efficiency, low energy consumption, this process that completes that is pollution-free, zero-emission are the key factors realizing large-scale industrial production, this directly will affect the brilliant vitality becoming method of modifying, high efficiency, low energy consumption, the completing this process and separate case will write series of patents statement again of pollution-free, zero-emission about how.Removing modification medium described in this case is the modification medium adopting heating and vacuumize in parallel method of evaporating removal material.
Beneficial effect:
The present invention adopts the advantage of above technical scheme as follows:
1, the present invention reaches modification object by changing lattice structure, and modified yarn overcomes its native defect, and hole increases, degree of crystallinity reduces, soft yarns, improves the DIMENSIONAL STABILITY of product, flexibility and dyeability etc.
2, the present invention adopts the method for abrupt release pressure, and modified yarn is farthest expanded, and significantly improves bulkiness and the flexibility of yarn.
3, the sodolin that is made into by modified linen thread and yarn of the present invention, is greatly improved the spinning of fabric, knits, metachromia energy.
Detailed description of the invention
Below in conjunction with detailed description of the invention, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment 1
Linen thread and yarn crystalline substance becomes modification and weaves a method for sodolin, 5 count linen yarn lines is placed in closed container, is filled with liquefied ammonia, and linearly boosting mode boosting, rate of pressure rise k meets relational expression
initial boost speed 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 the heating method of evaporating parallel with vacuum pump evacuation is adopted to remove modification medium, until pressure reduces to 133Pa in closed container, now namely obtain brilliant change modification linen thread and yarn, finally by mutual square crossing one group of warp thread and one group of weft yarn is crisscross on loom is made into sodolin, the sodolin be made into is 5 × 5,150/10cm × 100 piece/10cm.The fabric microcosmic lattice that described crystalline substance 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 crystalline substance 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
Linen thread and yarn crystalline substance becomes modification and weaves a method for sodolin, 32 count linen yarn lines is placed in closed container, is filled with liquefied ammonia, and linearly boosting mode boosting, rate of pressure rise k meets relational expression
initial boost speed 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 the heating method of evaporating parallel with vacuum pump evacuation is adopted to remove modification medium, until pressure reduces to 133Pa in closed container, now namely obtain brilliant change modification linen thread and yarn, finally by one group of yarn on knitting machine each other the lopping of string cover to be formed by connecting sodolin, the sodolin be made into is 32 × 32,220/10cm × 156 piece/10cm.The fabric microcosmic lattice that described crystalline substance 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 crystalline substance 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
Linen thread and yarn crystalline substance becomes modification and weaves a method for sodolin, 40 count linen yarn lines is placed in closed container, is filled with liquefied ammonia, and linearly boosting mode boosting, rate of pressure rise k meets relational expression
initial boost speed 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 the heating method of evaporating parallel with vacuum pump evacuation to remove modification medium, until pressure reduces to 133Pa in closed container, now namely acquisition is brilliant becomes modification linen thread and yarn, method finally by machinery makes it bonding and forms sodolin, and the sodolin be made into is 40 × 40,504/10cm × 236 piece/10cm.The fabric microcosmic lattice that described crystalline substance 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 crystalline substance 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
Linen thread and yarn crystalline substance becomes modification and weaves a method for sodolin, 120 count linen yarn lines is placed in closed container, is filled with liquefied ammonia, and linearly boosting mode boosting, rate of pressure rise k meets relational expression
initial boost speed 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 and vacuumize parallel method of evaporating and remove modification medium until pressure reduces to 133Pa in closed container, now namely obtain brilliant change modification linen thread and yarn, finally by mutual square crossing one group of warp thread and one group of weft yarn is crisscross on loom is made into sodolin, the sodolin be made into is 120 × 120,600/10cm × 600 piece/10cm.The fabric microcosmic lattice that described crystalline substance 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 crystalline substance 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
Linen thread and yarn crystalline substance becomes modification and weaves a method for sodolin, 32 and 36 count linen yarn lines is placed in closed container respectively, is filled with liquefied ammonia, and linearly boosting mode boosting, rate of pressure rise k meets relational expression
initial boost speed 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 and vacuumize parallel method of evaporating and remove modification medium until pressure reduces to 133Pa in closed container, now namely obtain brilliant change modification linen thread and yarn, finally by mutual square crossing one group of warp thread and one group of weft yarn is crisscross on loom is made into sodolin, the sodolin be made into is 32 × 36,535/10cm × 400 piece/10cm.The fabric microcosmic lattice that described crystalline substance 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 crystalline substance 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 (6)
1. linen thread and yarn crystalline substance becomes modification and weaves a method for sodolin, it is characterized in that: linen thread and yarn is placed in closed container, is filled with modification medium, boost to modifier pressure, then abrupt release pressure, removes modification medium, namely obtains brilliant change modification linen thread and yarn; String cover or bonding mode are made into sodolin by mutually intersecting, mutually described crystalline substance to be become modification linen thread and yarn; Described modification medium is liquefied ammonia; Described modifier pressure P is 1.2 ~ 2MPa, described abrupt release pressure be finger pressure drop to instantaneously described modifier pressure 1% and following; Describedly refer to 1 second ~ 3 seconds instantaneously, the rate of pressure reduction of described release pressure is 0.5MPa/s ~ 3MPa/s; 1min ~ 10min is kept after boosting.
2. a kind of linen thread and yarn crystalline substance according to claim 1 becomes modification and weaves the method for sodolin, and it 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. a kind of linen thread and yarn crystalline substance according to claim 1 becomes modification and weaves the method for sodolin, it is characterized in that, the sodolin microcosmic lattice that described crystalline substance 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 crystalline substance 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. a kind of linen thread and yarn crystalline substance according to claim 1 becomes modification and weaves the method for sodolin, and it is characterized in that, described pressure is absolute pressure.
5. a kind of linen thread and yarn crystalline substance according to claim 1 becomes modification and weaves the method for sodolin, and it is characterized in that, described boosting is linear boosting, and rate of pressure rise k meets relational expression
wherein t is pressure rising time, k
0for initial boost speed, k
0for 0.5MPa/min ~ 1MPa/min.
6. a kind of linen thread and yarn crystalline substance according to claim 1 becomes modification and weaves the method for sodolin, it is characterized in that, described removal modification medium is the modification medium adopting heating and vacuumize in parallel method of evaporating removal linen thread and yarn.
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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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| 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 |
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| 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 |
|---|
| 闪爆处理对大麻纤维结构与性能的影响;吴君南;《纺织学报》;20080430;第29卷(第4期);第14-17页 * |
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