CN109137129A - It is a kind of to utilize organic carboxyl acid cadmium salt preparation adjustable polyester fiber of high light transmission refractive index and preparation method thereof - Google Patents
It is a kind of to utilize organic carboxyl acid cadmium salt preparation adjustable polyester fiber of high light transmission refractive index and preparation method thereof Download PDFInfo
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- CN109137129A CN109137129A CN201810959666.8A CN201810959666A CN109137129A CN 109137129 A CN109137129 A CN 109137129A CN 201810959666 A CN201810959666 A CN 201810959666A CN 109137129 A CN109137129 A CN 109137129A
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- cadmium salt
- organic carboxyl
- refractive index
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- 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
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Polyesters Or Polycarbonates (AREA)
- Artificial Filaments (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Organic carboxyl acid cadmium salt preparation adjustable polyester fiber of high light transmission refractive index and preparation method thereof is utilized the present invention relates to a kind of, specifically includes the following steps: the synthesis of step (1) organic carboxyl acid cadmium salt, weigh metal cadmium salt or its oxide, weigh organic acid, solvent is added, reacts a period of time, after reaction, filtering, cooling, crystallization, drying, obtain organic carboxyl acid cadmium salt crystal；The preparation of step (2) polyester slice mixes polyester raw material with the organic carboxyl acid cadmium salt that step (1) is prepared, melting, the extruding pelletization in double screw extruder, and under the conditions of inert gas shielding, heating carries out solid phase；Step (3) melt spinning, the polyester slice that step (2) is prepared is added in apparatus for melt spinning, is carried out melt spinning, is obtained the adjustable polyester fiber of high light transmission refractive index, the preparation method of the fiber is simple.
Description
Technical field
The invention belongs to textile material fields, and in particular to a kind of to utilize organic carboxyl acid cadmium salt preparation high light transmission refractive index
Polyester fiber of tune and preparation method thereof.
Background technique
Polyester fiber (polyester fibre) is the polyester as made of organic dibasic acid and dihydric alcohol polycondensation through spinning institute
The synthetic fibers obtained, wherein it is most commonly seen with the polyester fiber that terephthalic acid (TPA) polymerize with ethylene glycol, it is commonly called as terylene.Polyester
Fiber biggest advantage is that wrinkle resistance and conformality are fine, intensity with higher and elastic recovery capability, strong durable, crease-resistant
Non-ironing, not adhesive hair.
The color of fiber is mainly the impression that our eyes, brain generate light, and its essence is light to be irradiated on fiber, light
The optical change that some column such as reflection, refraction, absorption have been sent out on fiber makes our eyes have received different former wavelength of light
Electromagnetic wave, and then big brain-capacity experiences colors different out.In field of textiles, it is common develop the color to fiber operation dyeing or
Person is stamp, by dyeing and stamp, assigns fiber different dyestuffs, different dyestuffs can be to the particular portion absorbed in light
Divide electromagnetic wave, and other electromagnetic waves are reflected, therefore, it may be seen that different colors.It also deposits in the prior art
In a kind of research of structure coloring, nanostructure such as is arranged using in fabric or fiber surface setting different distance, using receiving
Rice structure generates incident ray and is superimposed or weakens between certain refraction, reflection and electromagnetic wave, to make our eyes
The electromagnetic wave of different wave length can be received, so that people be allowed to perceive different colors.
Organic/inorganic hybridization material is the hydridization containing two or more materials, and material is nanometer or molecular level composition
Composite material, hybrid material is mixed in micro-scale, internal more uniform, thus shows new characteristic.It has various
Using such as the application of optics aspect.In field of textiles, rarely has the fiber for preparing organic/inorganic hybridization material and used
To optical field.
Have in the prior art to fiber or fabric in the application of optics aspect, but has mostly been the colour developing to fabric
Research, and concentrate in terms of being surface-treated to fiber dyeing and finishing technology and to fiber or fabric.The present invention is directed to system
A kind of standby utilization organic carboxyl acid cadmium salt preparation adjustable polyester fiber of high light transmission refractive index, the light transmittance of energy increased fiber, and
Refractive index is adjusted, so that fiber has certain application prospect in terms of optical property, such as prepares the gauze of high light transmission,
As the application of optical fiber in optical field, it is following it is also possible to light transmission and refraction using fiber change, be expected to prepare not
The fabric to develop the color through dyeing.
Summary of the invention
It is a kind of adjustable using organic carboxyl acid cadmium salt preparation high light transmission refractive index the present invention is directed to prepare in order to realize the present invention
Polyester fiber, and provide preparation method, specifically include following steps.
The synthesis of step (1) organic carboxyl acid cadmium salt
Metal cadmium salt or its oxide are weighed, organic acid is weighed, solvent is added, reacts a period of time, after reaction, mistake
Filter, cooling, crystallization, drying, obtain organic carboxyl acid cadmium salt crystal.
Organic carboxyl acid cadmium salt is the raw material for preparing the adjustable polyester fiber of high light transmission refractive index, is metal organic carboxyl acid
Salt is modified polyester raw material using organic carboxylate, obtains a kind of organic/inorganic hybridization material, hybrid material
Material is a kind of finely dispersed heterogeneous material, wherein at least has at least one dimension of the size of a phase in nanometer scale, very
To the level for reaching " molecule is compound ", therefore, organic phase and inorganic alternate interfacial area are big, it is strong to interact, and make clearly
Interface thickens, and can generate some unexpected effects in optics aspect, the light transmission of material such as can be improved, and changes
The refractive index etc. of material.
Further, metal cadmium salt or its oxide are one or both of cadmium carbonate, cadmium oxide.
Further, organic acid is dicarboxylic acids.
Further, dicarboxylic acids is one of ethanedioic acid, adipic acid, azelaic acid, M-phthalic acid, terephthalic acid (TPA)
Or it is a variety of.
Further, certain blocking agent is added in the synthesis of organic carboxyl acid cadmium salt.
The purpose of blocking agent be avoid the reaction speed of organic carboxyl acid cadmium salt too fast, meanwhile, blocking agent can be to avoid reaction
It carries out completely, blocking agent can be to contain hydroxyl organic reagent.Guarantee there is one or more in the structure of organic carboxyl acid cadmium salt
Hydroxyl, further provide its modify polyester condition.
Blocking agent can for hydroquinone, ethylene glycol, propylene glycol kind it is one or more.
The molar ratio of organic acid and metal cadmium oxide or its salt is 1.5-4:1, guarantees that the dosage of carboxylic acid is aoxidized greater than metal
The amount of object or its salt, so that can be esterified with polyester in the organic carboxyl acid cadmium salt product prepared containing sufficient carboxyl
Graft reaction.When the too high levels of carboxylic acid, in crystallization process, carboxylic acid can be precipitated, and participated in the reaction of polyester, influenced polyester
Viscosity and final fiber mechanical performance.
The solvent is one of water, ethyl alcohol, acetone.
The temperature of reaction is 50-70 DEG C, reaction time 0.5-1h.
The preparation of step (2) polyester slice
Polyester raw material is mixed with the organic carboxyl acid cadmium salt that step (1) is prepared, is melted, in double screw extruder
Middle extruding pelletization, under the conditions of inert gas shielding, heating carries out solid phase.
The present invention mixes polyester raw material with organic carboxyl acid cadmium salt before granulation, and organic carboxyl acid cadmium salt can be improved and exist
Dispersion in polyester system, and after being granulated, the subsequent solid polymerization reaction of carry out that can be full and uniform.It is anti-in solidification polymerization
Progress is pre-crystallized before answering, and polyester material can be made adequately to crystallize, and is also advantageous that and reacts in subsequent cure, and can guarantee polyester
Viscosity larger change does not occur.
In solid phase, due to containing organo moiety in organic carboxyl acid cadmium salt, and organo moiety contains
Under the high temperature conditions, with the hydroxy or carboxy on polyester polymerization reaction can occur for hydroxy or carboxy, this kind of group, and then be grafted to
On polyester macromolecule, organic/inorganic hybridization material is obtained, improve the translucency of polyester material and adjusts the refractive index of fiber,
The refractive index of fiber is mainly to be realized by the amount ratio of control organic carboxyl acid cadmium salt and polyester material.
The reaction condition of solid phase is 210-245 DEG C, reaction time 2-5h.
Present invention selection uses solid phase, and organic carboxyl acid cadmium salt is grafted on polyester macromolecule chain, coating is avoided
It handles bring and combines insecure problem, also avoid technique difficulty or ease when liquid polymerization and control, extent of polymerization difficulty or ease assurance etc. is asked
Topic, its viscosity of the polyester slice prepared and thermal transition temperature will not vary widely.
The mass ratio of polyester raw material and organic carboxylate is 95-99:1-5
Step (3) melt spinning
The polyester slice that step (2) is prepared is added in apparatus for melt spinning, melt spinning is carried out, is obtained high saturating
The adjustable polyester fiber of optical index.
The adjustable polyester fiber of high light transmission refractive index is prepared using organic carboxyl acid cadmium salt the present invention also provides a kind of.
Specifically, the light transmittance of the fiber is greater than 90%, and adjustable between ranges of indices of refraction 1.2-1.5.
The translucency of the adjustable polyester fiber of high light transmission refractive index being prepared of the invention is good, and according to demand may be used
The needs of being adjusted, being met in terms of optical property with refractive index, and the preparation method of the fiber is simple.
Specific embodiment
In order to further illustrate the present invention, the present invention provides the embodiment of following series:
Embodiment 1
It is a kind of to prepare the adjustable polyester fiber of high light transmission refractive index using organic carboxyl acid cadmium salt, specifically include following steps.
The synthesis of step (1) organic carboxyl acid cadmium salt
Cadmium oxide and ethanedioic acid are weighed, wherein the molar ratio of cadmium oxide and ethanedioic acid is 1:2, and suitable water is added, and is added
A certain amount of hydroquinone reacts 1h under the conditions of 50 DEG C as blocking agent, and after reaction, filtering, cooling, crystallization, drying obtain
To organic carboxyl acid cadmium salt crystal.
The preparation of step (2) polyester slice
Polyester raw material is mixed with the organic carboxyl acid cadmium salt that step (1) is prepared, polyester raw material and organic carboxyl acid
The mass ratio of cadmium salt is 98:2, melting, the extruding pelletization in double screw extruder, in N2Under atmosphere, heat up 190 DEG C, it is pre-crystallized
30min, after be warming up to 225 DEG C, carry out solid phase, polymerization time 4h.
Step (3) melt spinning
The polyester slice that step (2) is prepared is added in apparatus for melt spinning, melt spinning is carried out, is obtained high saturating
The adjustable polyester fiber of optical index.
Embodiment 2
It is a kind of to prepare the adjustable polyester fiber of high light transmission refractive index using organic carboxyl acid cadmium salt, specifically include following steps.
The synthesis of step (1) organic carboxyl acid cadmium salt
Cadmium carbonate and ethanedioic acid are weighed, wherein the molar ratio of cadmium carbonate and ethanedioic acid is 1:2, and suitable water is added, and is added
It is a certain amount of to ethylene glycol as blocking agent, react 1h under the conditions of 50 DEG C, it is after reaction, filtering, cooling, crystallization, dry, obtain
To organic carboxyl acid cadmium salt crystal.
The preparation of step (2) polyester slice
Polyester raw material is mixed with the organic carboxyl acid cadmium salt that step (1) is prepared, polyester raw material and organic carboxyl acid
The mass ratio of cadmium salt is 98:2, melting, the extruding pelletization in double screw extruder, in N2Under atmosphere, heat up 190 DEG C, it is pre-crystallized
30min, after be warming up to 225 DEG C, carry out solid phase, polymerization time 4h.
Step (3) melt spinning
The polyester slice that step (2) is prepared is added in apparatus for melt spinning, melt spinning is carried out, is obtained high saturating
The adjustable polyester fiber of optical index.
Embodiment 3
It is a kind of to prepare the adjustable polyester fiber of high light transmission refractive index using organic carboxyl acid cadmium salt, specifically include following steps.
The synthesis of step (1) organic carboxyl acid cadmium salt
Cadmium oxide and ethanedioic acid are weighed, wherein the molar ratio of cadmium oxide and ethanedioic acid is 1:3, and suitable water is added, and is added
A certain amount of hydroquinone reacts 1h under the conditions of 50 DEG C as blocking agent, and after reaction, filtering, cooling, crystallization, drying obtain
To organic carboxyl acid cadmium salt crystal.
The preparation of step (2) polyester slice
Polyester raw material is mixed with the organic carboxyl acid cadmium salt that step (1) is prepared, polyester raw material and organic carboxyl acid
The mass ratio of cadmium salt is 98:2, melting, the extruding pelletization in double screw extruder, in N2Under atmosphere, heat up 190 DEG C, it is pre-crystallized
30min, after be warming up to 225 DEG C, carry out solid phase, polymerization time 4h.
Step (3) melt spinning
The polyester slice that step (2) is prepared is added in apparatus for melt spinning, melt spinning is carried out, is obtained high saturating
The adjustable polyester fiber of optical index.
Embodiment 4
It is a kind of to prepare the adjustable polyester fiber of high light transmission refractive index using organic carboxyl acid cadmium salt, specifically include following steps.
The synthesis of step (1) organic carboxyl acid cadmium salt
Cadmium oxide and ethanedioic acid are weighed, wherein the molar ratio of cadmium oxide and ethanedioic acid is 1:2, and suitable water is added, and is added
A certain amount of hydroquinone reacts 1h under the conditions of 50 DEG C as blocking agent, and after reaction, filtering, cooling, crystallization, drying obtain
To organic carboxyl acid cadmium salt crystal.
The preparation of step (2) polyester slice
Polyester raw material is mixed with the organic carboxyl acid cadmium salt that step (1) is prepared, polyester raw material and organic carboxyl acid
The mass ratio of cadmium salt is 98:2, melting, the extruding pelletization in double screw extruder, in N2Under atmosphere, heat up 180 DEG C, it is pre-crystallized
40min, after be warming up to 230 DEG C, carry out solid phase, polymerization time 5h.
Step (3) melt spinning
The polyester slice that step (2) is prepared is added in apparatus for melt spinning, melt spinning is carried out, is obtained high saturating
The adjustable polyester fiber of optical index.
Embodiment 5
It is a kind of to prepare the adjustable polyester fiber of high light transmission refractive index using organic carboxyl acid cadmium salt, specifically include following steps.
The synthesis of step (1) organic carboxyl acid cadmium salt
Cadmium oxide and ethanedioic acid are weighed, wherein the molar ratio of cadmium oxide and ethanedioic acid is 1:2, and suitable water is added, and is added
A certain amount of hydroquinone reacts 1h under the conditions of 50 DEG C as blocking agent, and after reaction, filtering, cooling, crystallization, drying obtain
To organic carboxyl acid cadmium salt crystal.
The preparation of step (2) polyester slice
Polyester raw material is mixed with the organic carboxyl acid cadmium salt that step (1) is prepared, polyester raw material and organic carboxyl acid
The mass ratio of cadmium salt is 95:5, melting, the extruding pelletization in double screw extruder, in N2Under atmosphere, heat up 190 DEG C, it is pre-crystallized
30min, after be warming up to 225 DEG C, carry out solid phase, polymerization time 4h.
Step (3) melt spinning
The polyester slice that step (2) is prepared is added in apparatus for melt spinning, melt spinning is carried out, is obtained high saturating
The adjustable polyester fiber of optical index.
Embodiment 6
It is a kind of to prepare the adjustable polyester fiber of high light transmission refractive index using organic carboxyl acid cadmium salt, specifically include following steps.
The synthesis of step (1) organic carboxyl acid cadmium salt
Cadmium oxide and ethanedioic acid are weighed, wherein the molar ratio of cadmium oxide and ethanedioic acid is 1:2, and suitable water is added, and is added
A certain amount of hydroquinone reacts 1h under the conditions of 60 DEG C as blocking agent, and after reaction, filtering, cooling, crystallization, drying obtain
To organic carboxyl acid cadmium salt crystal.
The preparation of step (2) polyester slice
Polyester raw material is mixed with the organic carboxyl acid cadmium salt that step (1) is prepared, polyester raw material and organic carboxyl acid
The mass ratio of cadmium salt is 99:1, melting, the extruding pelletization in double screw extruder, in N2Under atmosphere, heat up 190 DEG C, it is pre-crystallized
30min, after be warming up to 225 DEG C, carry out solid phase, polymerization time 4h.
Step (3) melt spinning
The polyester slice that step (2) is prepared is added in apparatus for melt spinning, melt spinning is carried out, is obtained high saturating
The adjustable polyester fiber of optical index.
Comparative example 1
A kind of preparation method of polyester fiber.
The preparation of step (1) polyester slice
Polyester raw material is melted, the extruding pelletization in double screw extruder, in N2Under atmosphere, heat up 190 DEG C, it is pre-crystallized
30min。
Step (2) melt spinning
The polyester slice that step (1) is prepared is added in apparatus for melt spinning, melt spinning is carried out, obtains polyester
Fiber.
Comparative example 2
It is a kind of to prepare the adjustable polyester fiber of high light transmission refractive index using organic carboxyl acid mantoquita, specifically include following steps.
The synthesis of step (1) organic carboxyl acid mantoquita
Copper oxide and ethanedioic acid are weighed, wherein the molar ratio of copper oxide and ethanedioic acid is 1:2, suitable water is added, 50
1h is reacted under the conditions of DEG C, after reaction, filtering, cooling, crystallization, drying obtain organic carboxyl acid mantoquita crystal.
The preparation of step (2) polyester slice
Polyester raw material is mixed with the organic carboxyl acid mantoquita that step (1) is prepared, polyester raw material and organic carboxyl acid
The mass ratio of mantoquita is 98:2, melting, the extruding pelletization in double screw extruder, in N2Under atmosphere, heat up 190 DEG C, it is pre-crystallized
30min, after be warming up to 225 DEG C, carry out solid phase, polymerization time 4h.
Step (3) melt spinning
The polyester slice that step (2) is prepared is added in apparatus for melt spinning, melt spinning is carried out, obtains polyester
Fiber.
Comparative example 3
It is a kind of to prepare the adjustable polyester fiber of high light transmission refractive index using organic carboxyl acid cadmium salt, specifically include following steps.
The synthesis of step (1) organic carboxyl acid cadmium salt
Cadmium oxide and ethanedioic acid are weighed, wherein the molar ratio of cadmium oxide and ethanedioic acid is 1:1, and suitable water is added, and is added
A certain amount of hydroquinone reacts 1h under the conditions of 50 DEG C as blocking agent, and after reaction, filtering, cooling, crystallization, drying obtain
To organic carboxyl acid cadmium salt crystal.
The preparation of step (2) polyester slice
Polyester raw material is mixed with the organic carboxyl acid cadmium salt that step (1) is prepared, polyester raw material and organic carboxyl acid
The mass ratio of cadmium salt is 98:2, melting, the extruding pelletization in double screw extruder, in N2Under atmosphere, heat up 190 DEG C, it is pre-crystallized
30min, after be warming up to 225 DEG C, carry out solid phase, polymerization time 4h.
Step (3) melt spinning
The polyester slice that step (2) is prepared is added in apparatus for melt spinning, melt spinning is carried out, obtains polyester
Fiber.
Comparative example 4
A kind of preparation method of polyester fiber, specifically includes following steps.
The preparation of step (1) polyester slice
Polyester raw material is mixed with cadmium oxide, the mass ratio of polyester raw material and organic carboxyl acid cadmium salt is 98:2, it melts,
The extruding pelletization in double screw extruder, in N2Under atmosphere, heat up 190 DEG C, pre-crystallized 30min, after be warming up to 225 DEG C, heat preservation
Time is 4h.
Step (2) melt spinning
The polyester slice that step (1) is prepared is added in apparatus for melt spinning, melt spinning is carried out, is obtained high saturating
The adjustable polyester fiber of optical index.
Since the light transmittance and refractive index of fiber are difficult to measure, the present invention is to spinning material and obtained slice
Performance is tested, again on the basis of, those skilled in the art is it can be anticipated that final fiber performance achieved.By spinning
Slice is prepared into film, measures the light transmittance and refractive index of film.
(1) light transmittance tests light transmittance using light transmittance-mist degree instrument according to GB/T 2410-2008.
(2) refractive index uses abbe's refractometer test material refractive index.
Test result see the table below
Table 1, film light transmittance and refractive index
Above embodiments are only the preferred embodiment of the present invention, it is noted that for the ordinary skill of the art
Personnel can also make several changes, improvements and modifications without departing from the inventive concept of the premise, these change, improve and
Retouching also should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of preparation method using the organic carboxyl acid cadmium salt preparation adjustable polyester fiber of high light transmission refractive index, feature exist
In: specifically include following steps.
The synthesis of step (1) organic carboxyl acid cadmium salt
Metal cadmium salt or its oxide are weighed, organic acid is weighed, solvent is added, reacts a period of time, after reaction, filtering,
Cooling, crystallization, drying, obtain organic carboxyl acid cadmium salt crystal；
The preparation of step (2) polyester slice
Polyester raw material is mixed with the organic carboxyl acid cadmium salt that step (1) is prepared, is melted, is squeezed in double screw extruder
It is granulated out, under the conditions of inert gas shielding, heating carries out solid phase；
Step (3) melt spinning
The polyester slice that step (2) is prepared is added in apparatus for melt spinning, melt spinning is carried out, obtains high light transmission folding
Penetrate the adjustable polyester fiber of rate.
2. a kind of preparation method of the adjustable polyester fiber of high light transmission refractive index as described in claim 1, it is characterised in that: gold
Belong to cadmium salt or its oxide is one or both of cadmium carbonate, cadmium oxide.
3. a kind of preparation method of the adjustable polyester fiber of high light transmission refractive index as described in claim 1, it is characterised in that: have
Machine acid is dicarboxylic acids, and the dicarboxylic acids is ethanedioic acid, adipic acid, azelaic acid, M-phthalic acid, one in terephthalic acid (TPA)
Kind is a variety of.
4. a kind of preparation method of the adjustable polyester fiber of high light transmission refractive index as described in claim 1, it is characterised in that:
Blocking agent is added in the synthesis of step (1) organic carboxyl acid cadmium salt, the blocking agent is hydroquinone, ethylene glycol, propylene glycol kind
It is one or more.
5. a kind of preparation method of the adjustable polyester fiber of high light transmission refractive index as described in claim 1, it is characterised in that: have
The molar ratio of machine acid and metal cadmium oxide or its salt is 1.5-4:1.
6. a kind of preparation method of the adjustable polyester fiber of high light transmission refractive index as described in claim 1, it is characterised in that: step
Suddenly the temperature of the reaction in (1) is 50-70 DEG C, reaction time 0.5-1h, and the reaction temperature of solid-state polymerization is 200- in step (2)
235 DEG C, reaction time 2-5h.
What 7. a kind of preparation method of the adjustable polyester fiber of high light transmission refractive index as claimed in any one of claims 1 to 6 obtained
Fiber, it is characterised in that: the light transmittance of the fiber is greater than 90%, and refractive index is 1.2-1.4.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810959666.8A CN109137129B (en) | 2018-08-16 | 2018-08-16 | High-light-transmittance and adjustable-refractive-index polyester fiber prepared by organic cadmium carboxylate and preparation method thereof |
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|---|---|---|---|
| CN201810959666.8A CN109137129B (en) | 2018-08-16 | 2018-08-16 | High-light-transmittance and adjustable-refractive-index polyester fiber prepared by organic cadmium carboxylate and preparation method thereof |
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| CN109137129A true CN109137129A (en) | 2019-01-04 |
| CN109137129B CN109137129B (en) | 2021-08-10 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1140770A (en) * | 1995-07-14 | 1997-01-22 | 第一合纤株式会社 | Method for manufacturing far infrared-radiating polyester fibers |
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2018
- 2018-08-16 CN CN201810959666.8A patent/CN109137129B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1140770A (en) * | 1995-07-14 | 1997-01-22 | 第一合纤株式会社 | Method for manufacturing far infrared-radiating polyester fibers |
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