CN112431024B - Heat-insulating polyimide fabric and production method thereof - Google Patents
Heat-insulating polyimide fabric and production method thereof Download PDFInfo
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- CN112431024B CN112431024B CN202011155956.0A CN202011155956A CN112431024B CN 112431024 B CN112431024 B CN 112431024B CN 202011155956 A CN202011155956 A CN 202011155956A CN 112431024 B CN112431024 B CN 112431024B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
- D06M15/333—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetate; Polyvinylalcohol
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/70—Constructional features of drafting elements
- D01H5/72—Fibre-condensing guides
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with hydrogen peroxide or peroxides of metals; with persulfuric, permanganic, pernitric, percarbonic acids or their salts
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
- D06M13/51—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond
- D06M13/513—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/03—Polysaccharides or derivatives thereof
- D06M15/11—Starch or derivatives thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/14—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polycondensates of cyclic compounds, e.g. polyimides, polybenzimidazoles
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Abstract
The invention relates to a heat-preservation polyimide fabric and a production method thereof, wherein the method comprises the following steps: 1. sizing the yarn, wherein the sizing comprises PVA1788, phosphate starch and a coupling agent, wherein the mass ratio of the PVA1788 to the phosphate starch to the coupling agent is 3-5; the integral solid content of the slurry is 8-10%; the sizing pressure is 60kN-70kN; 2. weaving by using the sized yarns to obtain a fabric; 3. desizing the fabric, wherein the desizing liquid comprises 3-5g/L of H 2 O 2 3-5g/L sodium silicate and 1-2g/L penetrant, wherein the bath ratio is 1-3. The invention realizes good heat preservation performance and washing fastness of the fabric by utilizing the mutual synergistic effect of five factors of yarn structure, sizing agent formula, high-pressure sizing, fabric structure and desizing.
Description
Technical Field
The invention relates to the field of functional textile fabrics, in particular to a heat-preservation polyimide fabric and a production method thereof.
Background
The heat retention performance is a basic index of the garment fabric, and the purpose of heat retention can be achieved by filling heat retention materials under general conditions, such as daily visible cotton coats, down coats and the like. However, the common warm-keeping mode is difficult to meet the requirements of modern people on lightness, flexibility and attractiveness of clothes, so that the development of light warm-keeping fabrics becomes a trend. Chinese patent publication No. CN 209700004U announces that the date is 2019, 11, 29, the utility model discloses an intelligent heat-insulating fabric, and this application discloses a forming method of an intelligent heat-insulating fabric with a three-layer structure, utilizes the heat conduction function of graphene and has a warm-keeping function to far infrared rays, is assisted with a heat reflection film, pins the heat, reaches good cold-proof effect. The fabric has excellent heat preservation effect, but the moisture absorption and ventilation effect of the fabric is difficult to ensure, so that the actual wearing comfort is influenced. Chinese patent publication No. CN 210116226U, announcement date 2020, 2 months and 28 days, the utility model discloses a waterproof insulation chemical fiber fabric, and this application discloses a forming method of multilayer structure's waterproof insulation fabric, through setting up insulating layer and the high water absorption fiber layer that absorbs moisture, reduces the heat and scatters and disappears, improves the effect of absorbing water, reaches waterproof insulation's effect. The fabric has excellent heat preservation and moisture absorption effects, but the fabric is complex in structure, more in layers and higher in preparation cost.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a heat-insulating polyimide fabric and a production method thereof.
The technical scheme for solving the technical problems is as follows:
the production method of the heat-preservation polyimide fabric comprises the following steps:
step 1, sizing yarn, wherein the sizing agent comprises PVA1788, phosphate ester starch and a coupling agent gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane, and the mass ratio of the PVA1788 to the phosphate ester starch to the coupling agent gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane is (3-5); the integral solid content of the slurry is 8-10%; the sizing pressure is 60kN-70kN;
step 2, weaving the sized yarns to obtain a fabric;
step 3, desizing the fabric, wherein the desizing liquid comprises 3-5g/L of H 2 O 2 3-5g/L sodium silicate and 1-2g/L penetrant, wherein the bath ratio is 1-3.
Further, the sizing temperature in the step 1 is 95 ℃.
Further, 30% of H is adopted in the step 3 2 O 2 。
Further, the desizing method in the step 3 specifically comprises the following steps: preparing desizing liquid at normal temperature, adding the sized fabric after the sizing procedure according to the bath ratio of 1.
Further, the yarn in the step 1 is compact spinning yarn, and the spinning method is airflow negative pressure compact spinning.
Further, the yarn count of the yarn in the step 1 is 60-100.
The heat-insulating polyimide fabric is prepared by the method.
The invention has the beneficial effects that:
1. the compact spinning with 60-100 counts belongs to high count yarn, and because the spinning method of negative pressure compact spinning is adopted, the yarn twist is large, and the yarn structure is compact. The technical scheme adopts 60-70 kN of grouting force, belongs to high-pressure grouting, and the grouting liquid has good fluidity with the solid content of 8-10%. The sizing difficulty of the high count yarn with a compact structure is very high, and in the slurry of the technical scheme, the slurry is pressed by 60kN-70kN, and under the action of high pressure, most of the slurry adsorbed on the yarn is extruded by matching with the good fluidity of the slurry. The residual size is mainly distributed in the yarn, gaps among fibers in the yarn are filled in the yarn to form a reinforced layer, and the porosity in the yarn is reduced. The slurry left on the surface of the yarn is less than that left inside, and the slurry on the surface of the yarn forms a coating on the surface of the yarn.
2. The slurry formula adopts the coupling agent gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane, the gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane is hydrolyzed under the action of temperature and water when the slurry is boiled, and reacts with the slurry, and the reacted slurry forms a net structure and is firmer. Under high pressure, is pressed into the yarn. The epoxy group in the coupling agent gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane has excellent affinity to organic matters, can form physical winding with the molecular long chain of the yarn, and improves the binding performance of the fiber and the sizing agent. PVA1788 adopted in the formula is incompletely alcoholyzed polyvinyl alcohol, and has good adhesion with water repellent fiber. Under the comprehensive action, the bonding fastness of the sizing agent and the fibers in the yarn is high.
3. The desizing adopts hydrogen peroxide to oxidize and desize, has short desizing time and is mainly aimed at the coating layer of the yarn. Under the desizing condition of the yarn, the internal size is faded down in a small amount, the amount of the size in the yarn is not large, the problem of fiber adhesion force is fully considered when the formula of the remaining size is designed, PVA1788 is incomplete alcoholysis PVA and has strong adhesion with hydrophobic fibers, and a coupling agent gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane also has good affinity with organic matters. Meanwhile, the yarn structure is compact, the size can be pressed in through high pressure, and the size is removed mainly to form a coating layer under a soft desizing process. The amount of residual size is not so large, but the adhesion is good and the voids in the yarn are substantially blocked.
4. The fabric has large warp and weft density and low porosity among yarns. In addition to low internal porosity of the yarn, the overall porosity of the fabric is low. When a human body emits heat, the fabric with low porosity is easier to block heat from a space structure; the fiber adopted by the combined fabric is polyimide fiber, the thermal resistance of the fiber is close to that of static air at 25 ℃, and the fiber has a good heat preservation effect. The heat preservation performance of the fiber and the low porosity of the fabric are comprehensively utilized to reduce the outward transfer efficiency of hot steam generated by a human body, and the good heat preservation performance of the fabric is realized.
In conclusion, the invention realizes good heat preservation performance and washing fastness of the fabric by utilizing the synergistic effect of five factors of yarn structure, sizing agent formula, high-pressure sizing, fabric structure and desizing. The scheme of the invention does not additionally increase the production process, the production and processing method is simple, the industrial production is easy to realize, and the production cost is controllable.
Detailed Description
The principles and features of this invention are described below in conjunction with examples which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
Example 1
The production method of the heat-insulating polyimide fabric comprises the working procedures of spinning, sizing, weaving and desizing weaving, and comprises the following steps:
a) A yarn sizing procedure, wherein the formula of the sizing agent is
b) Weaving process
Plain weaving the sized yarns, wherein the warp density is 300 pieces/10 cm, and the weft density is 280 pieces/10 cm;
c) A desizing procedure, wherein the desizing formula is as follows:
the desizing step comprises:
preparing desizing liquid at normal temperature, adding the desizing liquid into a sized fabric after a sizing procedure according to a bath ratio of 1.
The heat preservation and air permeability of the fabric are tested, and the effect is shown in the table 1.
The heat-insulating performance of the fabric adopts GB/T11048-2008 determination standards of thermal resistance and wet resistance of the textile under the steady-state condition of physiological comfort.
The air permeability of the fabric is determined according to the GB/T5453-1997 standard for measuring the air permeability of textile fabrics.
Example 2
The production method of the heat-insulating polyimide fabric comprises the working procedures of spinning, sizing, weaving and desizing weaving, and comprises the following steps:
a) A yarn sizing procedure, wherein the formula of the sizing agent is
b) Weaving process
Plain weaving the sized yarns, wherein the warp density is 350 pieces/10 cm, and the weft density is 330 pieces/10 cm;
c) A desizing procedure, wherein the desizing formula is as follows:
the desizing step comprises the following steps:
preparing desizing liquid at normal temperature, adding the sized fabric after the sizing procedure according to the bath ratio of 1.
The heat preservation and air permeability of the fabric are tested, and the effect is shown in the table 1.
The heat-insulating performance of the fabric adopts GB/T11048-2008 determination standards of thermal resistance and wet resistance of the textile under the steady-state condition of physiological comfort.
The air permeability of the fabric is determined according to the GB/T5453-1997 standard for measuring the air permeability of textile fabrics.
Example 3
The production method of the heat-insulating polyimide fabric comprises the working procedures of spinning, sizing, weaving and desizing weaving, and comprises the following steps:
a) A yarn sizing procedure, wherein the formula of the sizing agent is
b) Weaving process
Plain weaving the sized yarns, wherein the warp density is 400 pieces/10 cm, and the weft density is 380 pieces/10 cm;
c) A desizing procedure, wherein the desizing formula is as follows:
the desizing step comprises:
preparing desizing liquid at normal temperature, adding the sized fabric after the sizing procedure according to the bath ratio of 1.
The heat preservation and air permeability of the fabric are tested, and the effect is shown in the table 1.
The heat-insulating performance of the fabric adopts GB/T11048-2008 determination standards of thermal resistance and wet resistance of the textile under the steady-state condition of physiological comfort.
The air permeability of the fabric is determined according to the GB/T5453-1997 standard for measuring the air permeability of textile fabrics.
Comparative example 1
Ordinary unsized polyimide yarn was woven into a fabric under the same weaving conditions as in example 1.
The fabric was tested for heat retention and air permeability with the results shown in table 1.
The heat-insulating performance of the fabric adopts GB/T11048-2008 determination standards of thermal resistance and wet resistance of the textile under the steady-state condition of physiological comfort.
The air permeability of the fabric is determined according to the GB/T5453-1997 standard for the air permeability of textile fabrics.
TABLE 1 comparison of examples 1-3 with comparative examples for heat retention and air permeability
| Comparative example 1 | Example 1 | Example 2 | Example 3 | |
| Thermal resistance (m) 2 ·K/W) | 0.0297 | 0.0385 | 0.0396 | 0.0410 |
| Air permeability (mm/s) | 4.37 | 0.424 | 0.274 | 0.187 |
As can be seen from Table 1, the thermal resistance of the fabric prepared by the method is far higher than that of the common fabric, and the air permeability is far lower than that of the common fabric, which indicates that the thermal insulation performance of the fabric prepared by the method is greatly improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The production method of the heat-preservation polyimide fabric is characterized by comprising the following steps:
step 1, sizing yarn, wherein the sizing agent comprises PVA1788, phosphate ester starch and a coupling agent gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane, and the mass ratio of the PVA1788 to the phosphate ester starch to the coupling agent gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane is (3-5); the integral solid content of the slurry is 8-10%; the sizing pressure is 60kN-70kN; the yarn count of the yarn in the step 1 is 60-100; the yarn in the step 1 is compact spinning yarn, and the spinning method is airflow negative pressure compact spinning;
step 2, weaving the sized yarns to obtain a fabric;
step 3, desizing is carried out on the fabric, wherein the desizing liquid comprises 3-5g/L of H 2 O 2 3-5g/L sodium silicate and 1-2g/L penetrant, wherein the bath ratio is 1-3.
2. The method for producing a heat-insulating polyimide fabric according to claim 1, wherein the sizing temperature in the step 1 is 95 ℃.
3. The method for producing the heat-insulating polyimide fabric as claimed in claim 1, wherein 30% of H is used in the step 3 2 O 2 。
4. The production method of the heat-preservation polyimide fabric as claimed in claim 1, wherein the desizing method in the step 3 is specifically as follows: preparing desizing liquid at normal temperature, adding the sized fabric after the sizing procedure according to the bath ratio of 1.
5. An insulating polyimide fabric, prepared by the method of any one of claims 1 to 4.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108790337A (en) * | 2018-03-20 | 2018-11-13 | 江苏工程职业技术学院 | A kind of environment-friendly waterproof combined type warm-keeping and life-saving fabric and its production method |
| CN110029429A (en) * | 2019-05-06 | 2019-07-19 | 江苏锐晟纺织科技有限公司 | A kind of full processing technology for twisting leno lining |
| CN110130107A (en) * | 2019-06-19 | 2019-08-16 | 中国科学院兰州化学物理研究所 | A kind of polytetrafluoroethylfiber fiber filaments sizing agent and preparation method thereof |
| CN110230189A (en) * | 2019-05-22 | 2019-09-13 | 东华大学 | High temperature resistant conduction high-performance textile and preparation method thereof |
| CN110295494A (en) * | 2019-07-01 | 2019-10-01 | 江苏先诺新材料科技有限公司 | A kind of sizing technique of polyimide fiber |
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- 2020-10-26 CN CN202011155956.0A patent/CN112431024B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108790337A (en) * | 2018-03-20 | 2018-11-13 | 江苏工程职业技术学院 | A kind of environment-friendly waterproof combined type warm-keeping and life-saving fabric and its production method |
| CN110029429A (en) * | 2019-05-06 | 2019-07-19 | 江苏锐晟纺织科技有限公司 | A kind of full processing technology for twisting leno lining |
| CN110230189A (en) * | 2019-05-22 | 2019-09-13 | 东华大学 | High temperature resistant conduction high-performance textile and preparation method thereof |
| CN110130107A (en) * | 2019-06-19 | 2019-08-16 | 中国科学院兰州化学物理研究所 | A kind of polytetrafluoroethylfiber fiber filaments sizing agent and preparation method thereof |
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