CN106222790B - High-strength composite fiber - Google Patents
High-strength composite fiber Download PDFInfo
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- CN106222790B CN106222790B CN201610765000.XA CN201610765000A CN106222790B CN 106222790 B CN106222790 B CN 106222790B CN 201610765000 A CN201610765000 A CN 201610765000A CN 106222790 B CN106222790 B CN 106222790B
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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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- 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
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/04—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers
- D01F11/08—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Artificial Filaments (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Inorganic Fibers (AREA)
Abstract
The invention discloses a high-strength composite fiber, which comprises the following components in percentage by weight: 40-60 parts of polycaprolactone fiber, 13-15 parts of silicon carbide fiber, 3-7 parts of copper ammonia fiber, 3-6 parts of modified organic silicon resin, 50-80 parts of solvent, 2-4 parts of thickening agent, 1-3 parts of penetrating agent and 2-5 parts of promoter. The high-strength fiber has the characteristics of high strength, strong corrosion resistance, good flexibility and the like.
Description
Technical Field
The invention belongs to the technical field of fiber filtration, and particularly relates to a high-strength composite fiber.
Background
Ceramic fiber is a fibrous light refractory material, and has the advantages of light weight, high temperature resistance, good thermal stability, low thermal conductivity, small specific heat, mechanical shock resistance and the like, so the ceramic fiber is widely applied to the industries of machinery, metallurgy, chemical industry, petroleum, ceramics, glass, electronics and the like.
Spinning is a process for manufacturing chemical fibers, in which some high molecular compounds are made into colloidal solution or melted into melt, and then extruded from fine holes of a spinneret to form the chemical fibers, and the process mainly comprises two main processes of solution spinning and melt spinning. Among them, melt spinning is a well-established spinning method. The melt spinning method is further classified into a polymerization method, a blend spinning method, and a sheath-core composite spinning method.
With the rapid development of various industries, the requirements for industrial fibers are higher and higher, and particularly, the industrial fibers are required to have good strength and corrosion resistance.
Disclosure of Invention
The invention aims to provide a high-strength composite fiber which has the characteristics of high strength, strong corrosion resistance, good flexibility and the like.
A high-strength composite fiber comprises the following formula: 40-60 parts of polycaprolactone fiber, 13-15 parts of silicon carbide fiber, 3-7 parts of copper ammonia fiber, 3-6 parts of modified organic silicon resin, 50-80 parts of solvent, 2-4 parts of thickening agent, 1-3 parts of penetrating agent and 2-5 parts of promoter.
The solvent is one of ethanol, propanol, isopropanol, polyethylene glycol and dimethylacetamide.
The thickening agent is one of polyacrylamide, polyvinyl alcohol and polyacrylate copolymer emulsion.
The penetrating agent is one of fatty alcohol-polyoxyethylene ether, alkylphenol ethoxylates and succinic acid alkyl ester sodium sulfonate.
The accelerant is one of tetramethyl thiourea, vanadium acetylacetonate, acetylacetone, triphenylphosphine and benzyl dimethylamine.
The preparation method of the high-strength composite fiber comprises the following steps:
step 1, crushing silicon carbide fibers and copper ammonia fibers to obtain nano fibers;
step 2, putting the nano-fibers into a high-pressure reaction kettle, adding a solvent, and uniformly mixing;
step 3, adding the modified organic silicon resin, the thickening agent and the accelerator, and carrying out sealed pressurized stirring reaction;
step 4, putting the penetrant and the polycaprolactone fiber into a reaction kettle, then carrying out closed aeration reaction, and airing to obtain a high-strength precursor fiber;
and 5, placing the high-strength precursor fiber in an autoclave, and heating, pressurizing and oxidizing under a critical condition to obtain the high-strength composite fiber.
The crushing treatment in the step 1 adopts a mechanical crushing method.
The stirring speed of the pressurized stirring reaction in the step 3 is 1000-2000r/min, the pressurized pressure is 2-5kPa, and the reaction time is 20-40 min.
The closed aeration reaction time in the step 4 is 35-85min, the aeration gas is a mixed gas of methyl ether and nitrogen, and the ratio of the methyl ether to the nitrogen is 0.5-2.8.
The critical gas in the step 5 adopts one of air with oxygen content of 40%, nitrogen mixed gas with oxygen content of 60% and inert gas mixed gas with oxygen content of 60%, the pressure reaches 5-30MPa, the constant pressure is saturated for 0.5-4h, and the temperature is 140-250 ℃.
Compared with the prior art, the invention has the following beneficial effects:
1. the high-strength fiber has the characteristics of high strength, strong corrosion resistance, good flexibility and the like.
2. The method has simple process and easily obtained raw materials, and is suitable for industrial production. Can be widely used in the industries of machinery, metallurgy, chemical industry, petroleum, ceramics, glass, electronics and the like.
3. According to the invention, the silicon carbide fiber and the cuprammonium rayon fiber are fixed on the polycaprolactone fiber by adopting a critical oxidation method, so that the polycaprolactone fiber has a good connection effect, is relatively stable in silicon bond connection and long in service life, shows good mechanical properties and thermal stability, and retains the excellent properties of the cuprammonium rayon fiber.
Detailed Description
The invention is further described below with reference to examples:
example 1
A high-strength composite fiber comprises the following formula: 40 parts of polycaprolactone fiber, 13 parts of silicon carbide fiber, 3 parts of cuprammonium fiber, 3 parts of modified organic silicon resin, 50 parts of solvent, 2 parts of thickening agent, 1 part of penetrating agent and 2 parts of accelerating agent.
The solvent is ethanol.
The thickening agent adopts polyacrylamide.
The penetrating agent is fatty alcohol-polyoxyethylene ether.
The accelerant adopts tetramethyl thiourea.
The preparation method of the high-strength composite fiber comprises the following steps:
step 1, crushing silicon carbide fibers and copper ammonia fibers to obtain nano fibers;
step 2, putting the nano-fibers into a high-pressure reaction kettle, adding a solvent, and uniformly mixing;
step 3, adding the modified organic silicon resin, the thickening agent and the accelerator, and carrying out sealed pressurized stirring reaction;
step 4, putting the penetrant and the polycaprolactone fiber into a reaction kettle, then carrying out closed aeration reaction, and airing to obtain a high-strength precursor fiber;
and 5, placing the high-strength precursor fiber in an autoclave, and heating, pressurizing and oxidizing under a critical condition to obtain the high-strength composite fiber.
The crushing treatment in the step 1 adopts a mechanical crushing method.
And in the step 3, the stirring speed of the pressurized stirring reaction is 1000r/min, the pressurized pressure is 2kPa, and the reaction time is 20 min.
The closed aeration reaction time in the step 4 is 35min, the aeration gas is a mixed gas of methyl ether and nitrogen, and the ratio of the methyl ether to the nitrogen is 0.5.
The critical gas in the step 5 is air with the oxygen content of 40%, the pressure reaches 5MPa, the constant pressure is saturated for 0.5h, and the temperature is 140 ℃.
Example 2
A high-strength composite fiber comprises the following formula: 60 parts of polycaprolactone fiber, 15 parts of silicon carbide fiber, 7 parts of cuprammonium fiber, 6 parts of modified organic silicon resin, 80 parts of solvent, 4 parts of thickening agent, 3 parts of penetrating agent and 5 parts of accelerating agent.
The solvent adopts polyethylene glycol.
The thickening agent adopts polyvinyl alcohol.
The penetrating agent is one of fatty alcohol-polyoxyethylene ether, alkylphenol ethoxylates and succinic acid alkyl ester sodium sulfonate.
The accelerant adopts vanadium acetylacetonate.
The preparation method of the high-strength composite fiber comprises the following steps:
step 1, crushing silicon carbide fibers and copper ammonia fibers to obtain nano fibers;
step 2, putting the nano-fibers into a high-pressure reaction kettle, adding a solvent, and uniformly mixing;
step 3, adding the modified organic silicon resin, the thickening agent and the accelerator, and carrying out sealed pressurized stirring reaction;
step 4, putting the penetrant and the polycaprolactone fiber into a reaction kettle, then carrying out closed aeration reaction, and airing to obtain a high-strength precursor fiber;
and 5, placing the high-strength precursor fiber in an autoclave, and heating, pressurizing and oxidizing under a critical condition to obtain the high-strength composite fiber.
The crushing treatment in the step 1 adopts a mechanical crushing method.
The stirring speed of the pressurized stirring reaction in the step 3 is 2000r/min, the pressurized pressure is 5kPa, and the reaction time is 40 min.
The closed aeration reaction time in the step 4 is 85min, the aeration gas is a mixed gas of dimethyl ether and nitrogen, and the ratio of the dimethyl ether to the nitrogen is 2.8.
And (3) adopting nitrogen mixed gas with oxygen content of 60% as critical gas in the step (5), wherein the pressure reaches 30MPa, the pressure is constant, the saturation is carried out for 4h, and the temperature is 250 ℃.
Example 3
A high-strength composite fiber comprises the following formula: 50 parts of polycaprolactone fiber, 14 parts of silicon carbide fiber, 6 parts of cuprammonium fiber, 5 parts of modified organic silicon resin, 70 parts of solvent, 3 parts of thickening agent, 2 parts of penetrating agent and 4 parts of accelerating agent.
The solvent adopts dimethyl acetamide.
The thickening agent adopts polyacrylate copolymer emulsion.
The penetrant is sodium alkyl sulfosuccinate.
Benzyl dimethylamine is adopted as the accelerator.
The preparation method of the high-strength composite fiber comprises the following steps:
step 1, crushing silicon carbide fibers and copper ammonia fibers to obtain nano fibers;
step 2, putting the nano-fibers into a high-pressure reaction kettle, adding a solvent, and uniformly mixing;
step 3, adding the modified organic silicon resin, the thickening agent and the accelerator, and carrying out sealed pressurized stirring reaction;
step 4, putting the penetrant and the polycaprolactone fiber into a reaction kettle, then carrying out closed aeration reaction, and airing to obtain a high-strength precursor fiber;
and 5, placing the high-strength precursor fiber in an autoclave, and heating, pressurizing and oxidizing under a critical condition to obtain the high-strength composite fiber.
The crushing treatment in the step 1 adopts a mechanical crushing method.
And in the step 3, the stirring speed of the pressurized stirring reaction is 1700r/min, the pressurized pressure is 4kPa, and the reaction time is 30 min.
The closed aeration reaction time in the step 4 is 65min, the aeration gas is a mixed gas of dimethyl ether and nitrogen, and the ratio of the dimethyl ether to the nitrogen is 2.1.
And (3) adopting an inert gas mixed gas with the oxygen content of 60% as the critical gas in the step (5), wherein the pressure reaches 24MPa, the constant pressure is saturated for 3.3h, and the temperature is 220 ℃.
The examples of examples 1-3 have the following catalytic effects:
the above description is only an embodiment of the present invention, and not intended to limit the present invention, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the protection scope of the present invention.
Claims (3)
1. A preparation method of high-strength composite fiber comprises the following steps:
step 1, crushing silicon carbide fibers and copper ammonia fibers to obtain nano fibers;
step 2, putting the nano-fibers into a high-pressure reaction kettle, adding a solvent, and uniformly mixing;
step 3, adding the modified organic silicon resin, the thickening agent and the accelerator, and carrying out sealed pressurized stirring reaction;
step 4, putting the penetrant and the polycaprolactone fiber into a reaction kettle, then carrying out closed aeration reaction, and airing to obtain a high-strength precursor fiber;
step 5, placing the high-strength precursor fiber into a high-pressure kettle, adopting one of air with the oxygen content of 40%, nitrogen mixed gas with the oxygen content of 60% and inert gas mixed gas with the oxygen content of 60%, and heating, pressurizing and oxidizing under the conditions that the pressure reaches 5-30MPa, the constant-pressure saturation lasts for 0.5-4h, and the temperature is 140-;
the formula of the high-strength composite fiber comprises: 40-60 parts of polycaprolactone fiber, 13-15 parts of silicon carbide fiber, 3-7 parts of copper ammonia fiber, 3-6 parts of modified organic silicon resin, 50-80 parts of solvent, 2-4 parts of thickening agent, 1-3 parts of penetrating agent and 2-5 parts of promoter;
the solvent is one of ethanol, propanol, isopropanol, polyethylene glycol and dimethylacetamide;
the thickening agent is one of polyacrylamide, polyvinyl alcohol and polyacrylate copolymer emulsion;
the penetrating agent is one of fatty alcohol-polyoxyethylene ether, alkylphenol ethoxylates and succinic acid alkyl ester sodium sulfonate;
the promoter is one of tetramethyl thiourea, vanadium acetylacetonate, acetylacetone, triphenylphosphine and benzyldimethylamine;
the closed aeration reaction time in the step 4 is 35-85min, the aeration gas is a mixed gas of methyl ether and nitrogen, and the ratio of the methyl ether to the nitrogen is 0.5-2.8.
2. The method of claim 1, wherein the pulverization in step 1 is performed by mechanical pulverization.
3. The method as claimed in claim 1, wherein the stirring speed of the pressurized stirring reaction in step 3 is 1000-2000r/min, the pressurized pressure is 2-5kPa, and the reaction time is 20-40 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610765000.XA CN106222790B (en) | 2016-08-31 | 2016-08-31 | High-strength composite fiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610765000.XA CN106222790B (en) | 2016-08-31 | 2016-08-31 | High-strength composite fiber |
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| CN106222790A CN106222790A (en) | 2016-12-14 |
| CN106222790B true CN106222790B (en) | 2020-08-25 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107780215A (en) * | 2017-11-19 | 2018-03-09 | 江苏宏泰纤维科技有限公司 | A kind of multifunctional composite fiber |
| CN109487371A (en) * | 2018-12-19 | 2019-03-19 | 长春安旨科技有限公司 | A kind of high-strength and high ductility fiber and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103351543A (en) * | 2013-06-28 | 2013-10-16 | 青岛国强环保科技有限公司 | Green energy-saving sound-insulation architectural decoration material |
| CN104371274A (en) * | 2014-11-18 | 2015-02-25 | 中国科学院深圳先进技术研究院 | Modified alumina composite material, copper-coated substrate and preparation method of copper-coated substrate |
| CN104672782A (en) * | 2014-12-31 | 2015-06-03 | 国家电网公司 | Fiber-reinforced resin-based composite material core and preparation method thereof |
| CN105126445A (en) * | 2015-07-30 | 2015-12-09 | 安徽凤凰滤清器股份有限公司 | Corrosion-resistant oil smoke-polluted air filtering material and preparation method thereof |
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- 2016-08-31 CN CN201610765000.XA patent/CN106222790B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103351543A (en) * | 2013-06-28 | 2013-10-16 | 青岛国强环保科技有限公司 | Green energy-saving sound-insulation architectural decoration material |
| CN104371274A (en) * | 2014-11-18 | 2015-02-25 | 中国科学院深圳先进技术研究院 | Modified alumina composite material, copper-coated substrate and preparation method of copper-coated substrate |
| CN104672782A (en) * | 2014-12-31 | 2015-06-03 | 国家电网公司 | Fiber-reinforced resin-based composite material core and preparation method thereof |
| CN105126445A (en) * | 2015-07-30 | 2015-12-09 | 安徽凤凰滤清器股份有限公司 | Corrosion-resistant oil smoke-polluted air filtering material and preparation method thereof |
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