CN112176443A - Preparation method of thermosensitive color-changing polyethylene fiber - Google Patents
Preparation method of thermosensitive color-changing polyethylene fiber Download PDFInfo
- Publication number
- CN112176443A CN112176443A CN202011216621.5A CN202011216621A CN112176443A CN 112176443 A CN112176443 A CN 112176443A CN 202011216621 A CN202011216621 A CN 202011216621A CN 112176443 A CN112176443 A CN 112176443A
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- thermochromic
- polyethylene fiber
- color
- preparing
- temperature
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- 239000000835 fiber Substances 0.000 title claims abstract description 45
- -1 polyethylene Polymers 0.000 title claims abstract description 36
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 33
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- 238000009987 spinning Methods 0.000 claims abstract description 16
- 230000008961 swelling Effects 0.000 claims abstract description 13
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims abstract description 12
- 239000008367 deionised water Substances 0.000 claims abstract description 9
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000001112 coagulating effect Effects 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000004090 dissolution Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 7
- 229920001451 polypropylene glycol Polymers 0.000 claims description 6
- 230000015271 coagulation Effects 0.000 claims description 2
- 238000005345 coagulation Methods 0.000 claims description 2
- 229920013716 polyethylene resin Polymers 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005054 agglomeration Methods 0.000 abstract description 3
- 230000002776 aggregation Effects 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 10
- 239000000975 dye Substances 0.000 description 10
- 239000003094 microcapsule Substances 0.000 description 9
- 206010042674 Swelling Diseases 0.000 description 7
- 241000122205 Chamaeleonidae Species 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- 239000002775 capsule Substances 0.000 description 3
- 238000002845 discoloration Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
Abstract
The invention relates to a preparation method of a thermosensitive color-changing polyethylene fiber, which comprises the following steps: 1) mixing the ultra-high molecular weight polyethylene resin with deionized water, controlling the temperature to be 42-52 ℃, swelling, adjusting the temperature to 70-90 ℃ after swelling is finished, stirring, adding the heat-sensitive agent after complete dissolution, heating to 110 ℃, and stirring to obtain a heat-sensitive color-changing polyethylene solution; 2) cooling the thermochromic polyethylene solution to 70-80 ℃, dehydrating, filtering, defoaming to obtain a spinning pre-solution, performing spinning and drawing, passing through three coagulating baths, drying and stretching to obtain thermochromic polyethylene fibers; the temperature reaction is fast, the color change effect is obvious, the color change frequency can reach more than 10000 times, the agglomeration phenomenon of a thermosensitive agent is avoided, and the fiber fineness can reach more than 32 metric counts.
Description
Technical Field
The invention belongs to the technical field of ultra-high molecular weight polyethylene fibers, and particularly relates to a preparation method of a thermosensitive color-changing polyethylene fiber.
Background
The main preparation method of the thermochromic material applied to the textile mainly comprises three methods that firstly, the thermochromic agent is filled into the fiber and is prepared by melting and blending spinning solution. Secondly, coating the polymer solution containing the thermosensitive color-changing microcapsules on the surface of the fiber, and performing heat treatment to enable the solution to be in a gel state so as to obtain the reversible thermochromic effect. Thirdly, the heat-sensitive compound is mixed into the dye and then is printed and dyed on the fabric. The dye is composed of tiny capsules of adhesive resin, each capsule is provided with liquid crystal, and the liquid crystal can present different refractive indexes along with the change of temperature, so that the clothes can change into various colors.
At present, the microcapsule method is mainly used for applying the thermochromic material to textiles. The microcapsules contain a special pigment and a color former, and are repeatedly bonded to develop a color at a predetermined temperature, and cut to remove the color. For example, eastern Japan corporation has developed a temperature sensitive fabric in which a heat sensitive dye is sealed in a one diameter capsule and then coated on the surface of the fabric. The glass substrate microcapsule contains three main components of a thermosensitive color-changing dye, a color-developing agent capable of developing another color by binding to the dye, and an alcohol decolorizer capable of separating the bound dye and color-developing agent at a certain temperature and dissolving the dye or color-developing agent. The microcapsule with color changing with temperature can be obtained by adjusting the proportion of the three components, and the change is reversible. Generally, garments are black at lower temperatures, red at C, and blue at C, which can produce other colors at temperatures in the range of one C. The Japanese fiber company adds thermosensitive color-changing liquid crystal microcapsules to a spinning bath to produce a fiber which can change color. The clothing made of the fiber or textile dyed by the microcapsule color-changing dye can change the clothing color along with the change of the temperature. Special textile products ltd in the uk developed an interesting series of dye microcapsules with novel applications. Such as chameleon microcapsules and microencapsulated thermochromic inorganic dyes. The chameleon becomes light in color after the temperature is increased, and becomes dark in color when the temperature is reduced, the chameleon can change color at different temperatures respectively by the types of black, green, orange, red, blue and purple, and the color change range of the latter is higher than that of the chameleon T.
However, the temperature response of the current thermosensitive discoloration is slow, the discoloration times are limited, and the application range is limited.
Disclosure of Invention
The invention aims to solve the technical problem of providing a preparation method of a thermosensitive color-changing polyethylene fiber, which has the advantages of quick temperature reaction, obvious color-changing effect, more than 10000 times of color changing, no agglomeration phenomenon of a thermosensitive agent and more than 32 metric counts of fiber fineness.
The invention relates to a preparation method of a thermosensitive color-changing polyethylene fiber, which comprises the following steps:
1) mixing the ultra-high molecular weight polyethylene resin with deionized water, controlling the temperature to be 42-52 ℃, swelling, adjusting the temperature to 70-90 ℃ after swelling is finished, stirring, adding the heat-sensitive agent after complete dissolution, heating to 110 ℃, and stirring to obtain a heat-sensitive color-changing polyethylene solution;
2) and (3) cooling the thermochromic polyethylene solution to 70-80 ℃, dehydrating, filtering, defoaming to obtain a spinning pre-solution, performing spinning and traction, passing through three coagulating baths, drying, and stretching to obtain the thermochromic polyethylene fiber.
In the step 1), the weight ratio of the polyethylene resin to the deionized water is 1: 5.2.
In the step 1), the swelling time is 10-11 h.
In the step 1), the stirring time after swelling is 4-5 h.
In the step 1), the heat-sensitive agent is a mixture of polypropylene glycol and polyorganosiloxane.
The molecular weight of the polypropylene glycol is between 1000-1200, the polyorganosiloxane is one of methyl diphenyl siloxane/trimethyl siloxane/dimethyl siloxane, or the two of the three are combined, or the three are combined, and the weight ratio of the polypropylene glycol to the polyorganosiloxane is 5:1.
in the step 1), the weight ratio of the heat-sensitive agent to the ultrahigh molecular weight polyethylene resin is 1:9 or 1: 10.
In the step 1), the stirring time after the heat-sensitive agent is added is 1-1.5 h.
In step 2), the drawing process is to pass it through a drawing zone consisting of three pairs of drawing rolls, wherein the spinning speed: first draft speed: second draft speed: the third draw speed was 1:1.12:1.25: 1.39.
In the step 2), the temperatures of the three coagulation baths are respectively as follows: 35 ℃, 55 ℃ and 65 ℃.
In the step 2), the drying temperature is 90 ℃; the drawing speed ratio is 1:1.5, and the temperature is 50-55 ℃.
The beneficial effect of the invention is that,
1. the temperature reaction is fast, the color change effect is obvious, and the color change frequency can reach more than 10000 times.
2. The agglomeration phenomenon of the heat-sensitive agent is avoided, and the fiber fineness can reach more than 32 metric.
Detailed Description
Example 1
A preparation method of a thermosensitive color-changing polyethylene fiber comprises the following steps:
1. preparing a thermosensitive color-changing polyethylene solution: weighing ultra-high molecular weight polyethylene resin and deionized water, wherein the weight ratio is as follows: ultra-high molecular weight polyethylene resin: deionized water 1:5.2, placing the mixture into a swelling kettle, controlling the temperature to be between 42 and 52 ℃, swelling the mixture for 10 to 11 hours, and stirring the mixture for 4 to 5 hours by using a stirrer, wherein the temperature range is between 70 and 90 ℃ after the swelling stage is finished. Completely dissolving the mixture, adding a heat-sensitive agent (the weight of the heat-sensitive agent is 1:9) after the mixture is completely dissolved, heating to 100 ℃, and stirring for 1.5 hours until the solution is uniform; the molecular weight of the polypropylene glycol is between 1000 and 1200, the polyorganosiloxane is methyl diphenyl siloxane, and the weight ratio of the polypropylene glycol to the polyorganosiloxane is 5:1.
2. preparing the thermosensitive discoloring ultrahigh molecular weight polyethylene fiber: firstly, cooling a spinning solution, wherein the temperature of the solution is between 70 and 80 ℃;
then dehydrating, filtering and defoaming to obtain spinning pre-solution;
and then the fiber is sent to a spinneret plate by a conveying device, the size and specification of the spinneret plate are designed automatically, spinning stock solution is sprayed out at a certain spraying speed, the spinning stock solution is firstly pulled by a belt to enter a drafting zone, the drafting zone consists of three pairs of drafting rollers, the spinning speed is first drafting speed, second drafting speed and third drafting speed are 1:1.12:1.25:1.39, the fiber passes through a first coagulating bath (the temperature is 35 ℃ and the time is 1min), then passes through a second coagulating bath (the temperature is 55 ℃ and the time is 1min) and a third coagulating bath (the temperature is 65 ℃ and the time is 1min), the obtained fiber is dried for 5min in a 90C drying channel, and then is subjected to hot drawing, the speed ratio is 1:1.5 and the temperature is 50-55 ℃, and finally the fiber is wound to obtain the thermochromic polyethylene fiber.
Comparative example 1
Compared with example 1, the difference is that:
1 preparation of a thermochromic polyethylene solution
The difference is that in comparative example 1, the ultra-high molecular weight polyethylene resin, the deionized water and the heat-sensitive agent are directly mixed and stirred for 1.5 hours at the temperature of 100 ℃ until the solution is uniform, and the weight of the ultra-high molecular weight polyethylene resin, the deionized water and the heat-sensitive agent is the same as that in example 1.
The other steps are the same as in example 1.
Comparative example 2
Comparative example 2 differs from example 1 in that:
2 preparation of thermochromic ultra-high molecular weight polyethylene fiber, in comparative example 2, only one drawing roll, spinning speed: the drawing speed is as follows: 1:1.25, passing through a coagulating bath at 55 deg.C for 3 min.
The other steps are the same as in example 1.
Experimental example 1
The thermosensitive color-changing polyethylene fibers prepared by the three methods of example 1, comparative example 1 and comparative example 2 were heated to 50 ℃ to completely change the color of the fibers, and then the heating was stopped, and the fibers were left to cool naturally under ventilation conditions at room temperature (25. + -. 1 ℃) to observe reversibility of the color change of the fibers. The change in color was characterized by the b value in the NH310 colorimeter, the color change time was recorded to test the color change sensitivity of the thermochromic fibers, and the number of reversible color changes (until the color change property was lost) was recorded as shown in table 1.
TABLE 1 discoloration test Table for different thermochromic polyethylene fibers
| Class of fibre | b value (before color change) | b value (after color change) | Time of color reproduction | Number of reversible color changes |
| Example 1 | -1.85 | -1.85 | 4.12 | 11000 times |
| Comparative example 1 | -1.93 | -1.43 | 5.41 | 1500 times of |
| Comparative example 2 | -2.11 | -1.74 | 6.18 | 1200 times |
According to the data in the table, the b value of the example 1 is not changed, and the fact that the color can be completely inversely changed is proved, the color changing effect is obvious, the color changing speed is high, and the color changing times are large.
The thermosensitive color-changing polyethylene fiber obtained in example 1 had a smoother surface and a more dispersed thermosensitive agent than the polyethylene fibers obtained in comparative examples 1 and 2.
Claims (10)
1. A preparation method of a thermosensitive color-changing polyethylene fiber is characterized by comprising the following steps:
1) mixing the ultra-high molecular weight polyethylene resin with deionized water, controlling the temperature to be 42-52 ℃, swelling, adjusting the temperature to 70-90 ℃ after swelling is finished, stirring, adding the heat-sensitive agent after complete dissolution, heating to 110 ℃, and stirring to obtain a heat-sensitive color-changing polyethylene solution;
2) and (3) cooling the thermochromic polyethylene solution to 70-80 ℃, dehydrating, filtering, defoaming to obtain a spinning pre-solution, performing spinning and traction, passing through three coagulating baths, drying, and stretching to obtain the thermochromic polyethylene fiber.
2. The method of preparing a thermochromic polyethylene fiber according to claim 1, wherein in step 1), the weight ratio of the polyethylene resin to the deionized water is 1: 5.2.
3. The method for preparing a thermochromic polyethylene fiber according to claim 1, wherein in step 1), the swelling time is 10 to 11 hours.
4. The method for preparing a thermochromic polyethylene fiber according to claim 1, wherein in step 1), the stirring time after swelling is 4 to 5 hours.
5. The method for preparing a thermochromic polyethylene fiber according to any of claims 1 to 4, wherein in step 1), the heat-sensitive agent is a mixture of polypropylene glycol and polyorganosiloxane.
6. The method of preparing a thermochromic polyethylene fiber according to claim 5, wherein in step 1), the weight ratio of the heat-sensitive agent to the ultrahigh molecular weight polyethylene resin is 1:9 or 1: 10.
7. The method for preparing a thermochromic polyethylene fiber according to claim 1, wherein the stirring time after adding the heat sensitive agent in step 1) is 1 to 1.5 hours.
8. The method for preparing a thermochromic polyethylene fiber according to claim 1, wherein in step 2), drawing is performed by passing it through a drawing zone consisting of three pairs of drawing rolls, wherein the spinning speed is: first draft speed: second draft speed: the third draw speed was 1:1.12:1.25: 1.39.
9. The method for preparing a thermochromic polyethylene fiber according to claim 1, wherein in step 2), the temperatures of the three coagulation baths are respectively: 35 ℃, 55 ℃ and 65 ℃.
10. The method for preparing a thermochromic polyethylene fiber according to claim 1, wherein in step 2), the drying temperature is 90 ℃; the drawing speed ratio is 1:1.5, and the temperature is 50-55 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011216621.5A CN112176443A (en) | 2020-11-04 | 2020-11-04 | Preparation method of thermosensitive color-changing polyethylene fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011216621.5A CN112176443A (en) | 2020-11-04 | 2020-11-04 | Preparation method of thermosensitive color-changing polyethylene fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112176443A true CN112176443A (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011216621.5A Pending CN112176443A (en) | 2020-11-04 | 2020-11-04 | Preparation method of thermosensitive color-changing polyethylene fiber |
Country Status (1)
| Country | Link |
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| CN (1) | CN112176443A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090269581A1 (en) * | 2006-04-07 | 2009-10-29 | Toyo Boseki Kabushiki Kaisha | High strength polyethylene fiber and method for producing the same |
| CN110804236A (en) * | 2019-11-04 | 2020-02-18 | 无锡金通高纤股份有限公司 | Preparation method of thermosensitive color-changing master batch and preparation method of thermosensitive color-changing fiber |
-
2020
- 2020-11-04 CN CN202011216621.5A patent/CN112176443A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090269581A1 (en) * | 2006-04-07 | 2009-10-29 | Toyo Boseki Kabushiki Kaisha | High strength polyethylene fiber and method for producing the same |
| CN110804236A (en) * | 2019-11-04 | 2020-02-18 | 无锡金通高纤股份有限公司 | Preparation method of thermosensitive color-changing master batch and preparation method of thermosensitive color-changing fiber |
Non-Patent Citations (1)
| Title |
|---|
| 赵莹 等: "《超高分子量聚乙烯纤维》", 31 August 2018 * |
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