CN111038707B - Polyarylester silk main umbrella for drogue - Google Patents
Polyarylester silk main umbrella for drogue Download PDFInfo
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- CN111038707B CN111038707B CN201911422894.2A CN201911422894A CN111038707B CN 111038707 B CN111038707 B CN 111038707B CN 201911422894 A CN201911422894 A CN 201911422894A CN 111038707 B CN111038707 B CN 111038707B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D17/00—Parachutes
- B64D17/80—Parachutes in association with aircraft, e.g. for braking thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0006—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using woven fabrics
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0036—Polyester fibres
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
- D06N3/145—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes two or more layers of polyurethanes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/103—Resistant to mechanical forces, e.g. shock, impact, puncture, flexion, shear, compression, tear
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/108—Slipping, anti-blocking, low friction
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/12—Permeability or impermeability properties
- D06N2209/121—Permeability to gases, adsorption
- D06N2209/123—Breathable
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/26—Vehicles, transportation
- D06N2211/267—Aircraft
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The invention discloses a polyarylate silk main parachute for a drogue parachute, which relates to the technical field of parachutes and comprises a parachute canopy and a plurality of parachute ropes connected with the parachute canopy; the umbrella canopy is sewn by polyarylate silk; the umbrella rope is woven by polyamide fibers. The invention discloses a polyarylate silk main umbrella for a drogue, which is sewn by polyarylate silk with good tear resistance and anti-adhesion performance, so that the polyarylate silk main umbrella meets the national standard, and the performance of the polyarylate silk main umbrella is superior to that of the conventional drogue sewn by polyethylene silk.
Description
Technical Field
The invention relates to the technical field of parachutes, in particular to a polyarylester silk main parachute for a parachute.
Background
Drag parachutes, also known as drag parachutes, are umbrella-like tools used to reduce the speed of the aircraft running down when landing. Is usually composed of a main umbrella, a guiding umbrella, an umbrella bag and the like. The requirements of the drogue on fabrics are high, and the drogue needs to meet the following conditions: weighing test is less than or equal to 120g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The ventilation is less than or equal to 20L/square meter s (200 mm differential pressure); the tearing strength is more than or equal to 170N (warp direction/weft direction); the blocking force of the canopy is not more than 1N in the storage period (17 years).
Disclosure of Invention
The invention provides a polyarylate silk main umbrella for a drogue.
The invention is realized by the following technical scheme: a polyarylate silk main umbrella for a drogue parachute comprises a canopy and a plurality of parachute ropes connected with the canopy; the umbrella canopy is sewn by polyarylate silk; the umbrella rope is woven by polyamide fibers.
Further, the polyarylate silk comprises a base cloth and a coating, wherein the base cloth is polyarylate silk woven by polyarylate fibers; by a means ofThe coating is a polyurethane composite coating; the ventilation amount of the polyarylate silk fabric is not more than 15L/square meter s; the weight is as follows: 85-110 g/m 2 。
The anti-adhesion fabric adopts warp and weft raw materials as follows: 1/110dtex polyarylate fiber having a total number of warp of 4640; the weft density of the upper loom in the weaving process is 28 roots/cm; the fabric weave is plain weave, and the reed width of the upper loom is 146cm. The anti-adhesion fabric can meet the requirements of the channel drogue on the performances of anti-adhesion, ventilation, tearing strength and the like of the woven fabric.
Further, the polyurethane composite coating comprises a bottom coating and a surface coating, and the bottom coating and the surface coating are sequentially coated on the base cloth.
Further, the bottom coating comprises the following components: 100 to 120 parts of polyurethane A, 10 to 20 parts of toluene, 10 to 15 parts of cross-linking agent and 2 to 4 parts of accelerator. The surface layer coating comprises the following components: 80-100 parts of polyurethane B, 20-25 parts of organic silicon resin, 10-20 parts of toluene, 3-5 parts of cross-linking agent, 3-5 parts of anti-sticking agent and 0.4-0.6 part of antioxidant; the mass ratio of the polyurethane B to the organic silicon resin is 4:1.
The bottom coating adopts polyurethane adhesive with excellent performance, so that the polyurethane adhesive has good film forming property, and the adhesive force between the bottom coating and the fabric is enhanced. The surface layer coating adopts polyurethane resin and is added with organic silicon resin to meet the requirements of softness and anti-adhesion performance of the product and soft and smooth hand feeling. The proportion of the organic silicon resin and the polyurethane B in the surface layer coating is set to ensure that each index of the product reaches the optimal balance point, thereby effectively improving the softness and anti-adhesion performance of the product.
Further, the weight of the coating is 2% -2.2% of the weight of the base cloth.
The invention also provides a preparation process of the polyarylate silk main umbrella for the drogue, which comprises a coating process for coating the base cloth, wherein the coating process comprises the following steps of: fabric pretreatment and coating application;
a) Pretreatment of fabrics: calendering and waterproofing the woven base fabric before coating the coating;
b) Coating: the coating method comprises the steps of coating a bottom coating and a surface coating, wherein the bottom coating and the surface coating are directly coated by a scraper;
the base fabric is woven by polyarylate fibers.
The soft calendaring treatment is carried out on the base cloth before coating, so that the problem of harder hand feeling of the base cloth can be solved, the hand feeling of the base cloth is softer, the softness is better, the surface of the base cloth is smoother and flatter, the air tightness is better, the permeation and the use amount of coating slurry are reduced, and the same air permeability requirement can be met under the condition of less use amount of the coating; the waterproof treatment can improve the hand feeling of the base cloth after coating, so that the base cloth is softer, and the damage of the coating to tearing strength is reduced.
Wherein, the technological parameters of the calendaring treatment are as follows: the temperature is 120 ℃, the linear pressure is 250-300N/cm, and the speed is 30m/min;
the waterproof treatment adopts a two-soaking and two-rolling process, and the process parameters are as follows: the slurry adopts an organosilicon waterproofing agent with the concentration of 10-15g/l, the rolling speed is 30m/min, and the drying temperature is 120 ℃.
Further, the parameters of the coating application are: the feeding amount is 25+/-5 g/m < 2 >; the drying temperature in the coating process is 165-170 ℃, the drying time is 1.2-1.4 min, the coated coating is smooth and has no pinholes, the thickness is uniform, the coupon collecting tension is uniform, and the coiling is smooth and has no wrinkles.
Further, the weaving process of the base fabric comprises the following steps,
s1) silk pretreatment: pretreating warp threads by adopting a three-section whole pulp combining unit, wherein the concentration of the pulp is 12-16 grids;
s2) weaving: weaving base cloth by adopting a rigid rapier loom;
the warp yarn and the weft yarn do not pass through the yarn twisting process before weaving.
Further, the weaving process parameters of the polyarylate silk fabric are as follows: 1/110dtex polyarylester is adopted as a warp and weft raw material; the weaving parameters are as follows: reed 16 feather/cm; edge reed 10 feather/cm; 1 harness/heald, 2 harness/reed; side threading method, 1 harness/harness, 4 harness/reed; weave of fabric: plain weave; shuttle box, number of weft accumulator: 1-1 single warp beam; the weft density of the machine is as follows: 28 roots/cm; reed width of upper loom: 146cm.
Further, the umbrella rope is connected with the fuse pulling pin buckle, and the tearing-proof belt is sewn on one end of the fuse pulling pin buckle connected with the umbrella rope and used for improving the tearing-proof force of the fuse pulling pin buckle.
Further, the anti-tearing tape is sewn into a partially overlapped annular structure and is nested on the fuse pulling pin buckle; the overlapping part of the annular structure is sewn in a zigzag line distance mode on the other side of the overlapping part corresponding to the annular structure, and the stitch is 15 +3 /100mm。
Compared with the prior art, the invention has the following advantages:
(1) The polyarylate silk main umbrella for the speed reducing umbrella provided by the invention adopts the polyarylate silk to be sewn into the umbrella cover, and the anti-adhesion property, the ventilation capacity, the tearing strength and the breaking performance of the polyarylate silk main umbrella are all superior to those of the polyethylene silk for the speed reducing umbrella, so that the problem that the speed reducing umbrella sewn by the polyethylene silk is easy to adhere is solved.
(2) The polyarylate silk used for the main polyarylate silk umbrella of the speed reducer umbrella provided by the invention adopts the polyarylate fiber as the base cloth and the polyurethane coating to coat the coating, so that the anti-adhesion fabric for the speed reducer umbrella is obtained, and the anti-adhesion performance, ventilation capacity, weight, tearing strength and breaking performance of the anti-adhesion fabric can all meet the anti-adhesion requirements of the speed reducer umbrella.
Drawings
FIG. 1 is a schematic diagram of the connection structure of a fuse pull tab and a tear-resistant belt according to the present invention;
FIG. 2 is a cross-sectional view of a tear tape according to the present invention;
FIG. 3 is a graph showing the adhesion force of the canopy of the main umbrella according to the present invention as a function of time;
FIG. 4 is a graph of the relationship between 1N and time of the adhesion force of the main umbrella canopy in the present invention;
FIG. 5 shows the relationship between the tensile strength of the canopy of the main umbrella and the temperature over time
FIG. 6 is a graph showing the relationship between heating time and temperature when the tensile strength of the canopy of the main umbrella is reduced to 75% in the present invention.
Wherein, 100-umbrella rope; 200-a fuse pin pulling buckle; 201-tear-proof tape.
Detailed Description
The present invention will be described in further detail with reference to examples, but embodiments of the present invention are not limited thereto.
A polyarylate silk main umbrella for a drogue parachute comprises a canopy and a plurality of parachute ropes connected with the canopy; the umbrella canopy is sewn by polyarylate silk; the umbrella rope is woven by polyamide fibers.
The umbrella shape of the main umbrella can be any one of a cross umbrella, a rotary umbrella, a wave ring umbrella, a guide surface umbrella, a conical strip umbrella, a circular seam umbrella or a square umbrella.
The polyarylate silk in the application document comprises a base cloth and a coating, wherein the base cloth is polyarylate silk woven by polyarylate fibers; the coating is a polyurethane composite coating; the ventilation amount of the polyarylate silk fabric is not more than 15L/square meter s; the weight is as follows: 85-110 g/m 2 。
The anti-adhesion fabric adopts warp and weft raw materials as follows: 1/110dtex polyarylate fiber having a total number of warp of 4640; the weft density of the upper loom in the weaving process is 28 roots/cm; the fabric weave is plain weave, and the reed width of the upper loom is 146cm. The anti-adhesion fabric can meet the requirements of the channel drogue on the performances of anti-adhesion, ventilation, tearing strength and the like of the woven fabric.
The polyurethane composite coating comprises a bottom coating and a surface coating, and the bottom coating and the surface coating are sequentially coated on the base cloth.
The bottom coating comprises the following components: 100 to 120 parts of polyurethane A, 10 to 20 parts of toluene, 10 to 15 parts of cross-linking agent and 2 to 4 parts of accelerator. The surface layer coating comprises the following components: 80-100 parts of polyurethane B, 20-25 parts of organic silicon resin, 10-20 parts of toluene, 3-5 parts of cross-linking agent, 3-5 parts of anti-sticking agent and 0.4-0.6 part of antioxidant; the mass ratio of the polyurethane B to the organic silicon resin is 4:1.
Wherein; the polyurethane A and the polyurethane B are thermoplastic polyether polyurethane, and the hard-soft segment ratio of the polyurethane A is larger than that of the polyurethane B, namely the hardness of the polyurethane A is larger than that of the polyurethane B.
The coating is directly coated by a doctor blade at 165-170 ℃.
After the traditional coating is coated on the fabric, the adhesion of the coating makes the fabric yarn difficult to slip, the tearing capability is reduced, and the tearing performance of the fabric is affected. The requirements of the drogue for tearing strength are very high, so in the process of selecting a coating, the drogue needs to be selected to achieve good anti-adhesion performance, and the tearing performance of the fabric cannot be obviously influenced.
Therefore, the polyurethane coating is adopted as the coating, so that the anti-adhesion performance of the fabric can be improved, and the tearing performance of the fabric can be improved. Meanwhile, 10-15 parts of cross-linking agent, preferably 12 parts of cross-linking agent, is added to the primer coating in the invention. In the process of coating, polyurethane A molecules are rapidly crosslinked to form a film under the high-temperature condition, so that a thermosetting net-shaped film is formed, DMF residues are avoided, and the adhesion performance, the air tightness and the hand feeling softness of the bottom coating are good.
The surface layer coating adopts the mass ratio of polyurethane B to organic silicon resin of 4:1. Under the proportion, the tearing property and various indexes of the fabric reach the optimal balance point, and the softness and anti-adhesion property of the fabric are effectively improved. The surface layer coating is directly coated by a scraper at 165-170 ℃ in the coating process, so that crosslinking is formed between polyurethane B molecules and between polyurethane B and the organic silicon resin, and simultaneously, crosslinking is also formed between the surface layer coating and the bottom layer coating, so that good adhesion performance between the surface layer coating and the bottom layer coating is realized, and further, good adhesion performance between the coating and the base cloth is realized.
The anti-sticking agent added in the surface layer coating can further improve the anti-sticking performance of the fabric, so that the fabric can be kept non-sticking under the temperature and pressure, and the fabric can not be stuck during the storage period of up to 17 years.
Because the environmental conditions are changeable in the using process of the drogue, an antioxidant is also added in the surface coating. Although polyurethanes and silicone resins already have good weather resistance and have good high and low temperature resistance. However, the invention further adds an antioxidant into the surface coating, so that the weather resistance of the coating is further improved, and the weather resistance of the drogue is better.
In the process of opening the drogue, the drogue needs to be compressed and stored as much as possible to reduce the occupied space of the drogue, so the drogue needs to have good softness, so that the drogue is compressed and stored as much as possible without affecting the performance.
The weight of the coating is 2% -2.2% of the weight of the base cloth, so that the requirements of the drogue on the ventilation capacity of the fabric can be met, and the weight of the fabric is not increased.
The polyarylate silk used for sewing the main umbrella disclosed in the present application is prepared in the following manner:
the method specifically comprises the following steps:
s1) silk pretreatment: pretreating warp threads by adopting a three-section whole pulp combining unit, wherein the concentration of the pulp is 12-16 grids;
s2) weaving: the rigid rapier loom is adopted to weave the base cloth, and the weaving process parameters are as follows: 1/110dtex polyarylester is adopted as a warp and weft raw material; the weaving parameters are as follows: reed 16 feather/cm; edge reed 10 feather/cm; 1 harness/heald, 2 harness/reed; side threading method, 1 harness/harness, 4 harness/reed; weave of fabric: plain weave; shuttle box, number of weft accumulator: 1-1 single warp beam; the weft density of the machine is as follows: 28 roots/cm; reed width of upper loom: 146cm.
The warp yarn and the weft yarn do not pass through the yarn twisting process before weaving.
In S1), the silk pretreatment comprises a warping process, a pulp warp process, a doubling process and a leasing process.
Wherein, warping process adopts the warping machine of experert 1200 type, and its technological parameter is: reed specification: 120 feather/cm, reeding mode: 1, reeding and emptying a reed; warping tension: 22 g/root; s-stick tension: 32 g/root.
Wherein, the pulp process adopts an experert 600 type pulp silk machine, and the process parameters are as follows: slurry concentration 14 grid; the vehicle speed is 80m/min; a untwisting tension of 65 g/root; 70 g/root at the beginning of coiling tension and 65 g/root at the end; the cylinder temperature is respectively as follows in sequence: 145 ℃, 140 ℃, 135 ℃, 130 ℃.
Wherein, the parallel shaft process adopts an experert 300 type parallel shaft machine, and the process parameters are as follows: the speed of the vehicle is 75m/min; reed specification: 120 feathers/cm; reed threading mode: reeding 2 reed holes to form a reed; the untwisting tension is 160 g/root; the winding tension was 170 g/root at the beginning and 165 g/root at the end.
Wherein, the technological parameters of the leasing process are as follows: the speed of the vehicle is 60m/min, the running length is 3.5 grid, and the stranding mode is as follows: one above the other.
S3) coating process:
a) Pretreatment of fabrics: calendering and waterproofing the woven base fabric before coating the coating;
b) Coating: the coating method comprises the steps of coating a bottom coating and a surface coating, wherein the bottom coating and the surface coating are directly coated by a scraper; the total loading of the bottom coating and the surface coating is 25+/-5 g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The drying temperature in the coating process is 165-170 ℃ and the drying time is 1.2-1.4 min.
Wherein the calendaring processing parameters are as follows: the temperature is 120 ℃, the linear pressure is 250-300N/cm, and the speed is 30m/min;
wherein the waterproof treatment parameters are as follows: the slurry is prepared by adopting a two-soaking and two-rolling process, the concentration of the slurry is 10-15g/l, the rolling speed is 30m/min, and the slurry is dried at 120 ℃.
TABLE 1 physical and mechanical Properties of the base fabrics
Table 2 properties of the product fabric
The results of the performance tests on the base fabric and the product fabric are shown in tables 1 and 2. As shown in Table 1, the performances of the base fabric prepared in the above embodiment, such as weight, warp/weft strength, and warp/weft elongation at break, meet the physical and mechanical performance requirements of the base fabric.
As shown in Table 2, the base cloth prepared in the above example was coated with a coating, and the coated fabric was excellent in performance, and could meet the fabric performance requirements of a drogue.
4083 batches of polyarylate silk prepared by the raw materials and the process are sewn into a main parachute of the speed reducing parachute, and performance tests are carried out on the main parachute of the speed reducing parachute prepared by the main parachute, wherein the performance tests comprise breaking strength and breaking elongation of a main parachute canopy, anti-blocking performance test, aging performance test, ventilation test, tearing strength test and weight test of the speed reducing parachute, and the test results are shown in tables 3-7 respectively.
TABLE 3 results of breaking Strength and elongation test of Main umbrella
The test results show that: the warp breaking strength range of the main canopy of the drogue parachute prepared from the polyarylate silk is 3976N-4083N, and the weft breaking strength is 3266N-3569N; the elongation at break in the warp direction ranges from 5.2% to 5.9%, the elongation at break in the weft direction ranges from 6.2% to 6.5%, and the breaking strength and elongation test are qualified.
Table 4 anti-blocking test data
The test methods for detecting the anti-blocking performance and the aging performance are as follows: 5 samples of the parachuting canopy prepared in the present application were placed in constant temperature heating boxes at 80 ℃, 90 ℃,100 ℃, 110 ℃,120 ℃ respectively, and tested for blocking force and tensile strength at different time points, and the blocking force test results are shown in table 4.
Then according to the relation graph (shown in fig. 3) of the adhesion force changing along with time, a relation curve of the adhesion force reaching 1N and time is obtained, the curve relation (shown in fig. 4) is obtained, and then according to the Arrhenius equation, a fitting linear equation is calculated as follows:
lnt nT ＝-5.793+8712.279/T
when the temperature is 60 ℃ (333K), the time required for the adhesion force of the parachute canopy to reach 1N is calculated as follows:
lnt n333K ＝-5.793+8712.279/333＝20.37
tn 333.15K ＝e 20.37 i 3600×24×365=22.27 (year)
As can be seen, the adhesion of the canopy made of polyarylate silk in the present application takes at least 22.27 years to reach 1N.
TABLE 5 results of ageing test
The experimental method for the aging test comprises the following steps: 5 samples of the parachuting canopy prepared in the application document are respectively placed into a constant temperature heating box at 80 ℃, 90 ℃,100 ℃, 110 ℃ and 120 ℃, then a hot air accelerated aging test method is adopted for test, sampling and analysis, the hot air accelerated aging test method is based on an Arrhenius (Arrhenius) equation, an Arrhenius graph is drawn from the time when a textile material at a set high temperature reaches a strength critical value, the storage life of the parachuting is calculated by carrying out linear regression analysis on the graph, the change relation of the tensile strength of the samples along with the time and the temperature is shown in figure 5, and the relation between the heating time and the temperature when the tensile strength of the samples is reduced to 75% is shown in figure 6.
A curve of the linear equation is fitted according to fig. 6, and the fitted linear equation is calculated according to the arrhenius equation as follows:
lnt nT ＝-23.544+14907.68×1/T
the storage life of the spinning material decreases with increasing ambient temperature, according to the storage temperature of the drogue: the time required to calculate 25% strength loss at-55℃to +60℃isas follows:
lnt n333K ＝-23.544+14907.68/333＝21.224
t n333K ＝e 21.224 i 3600 x 24 x 365=52.32 (year)
As can be seen, the storage life of the canopy made of polyarylate silk in the present application can reach 52.32 years.
| Sequence number | Ventilation (L/. Square meter s) | Conclusion(s) |
| 1 | 5.0 | |
| 2 | 5.1 | Qualified product |
| 3 | 6.2 | Qualified product |
| 4 | 5.4 | Qualified product |
| 5 | 6.3 | Qualified product |
TABLE 6 results of ventilation test of main umbrella
The test result shows that the ventilation quantity of the main umbrella of the speed-reducing umbrella prepared from the polyarylate silk ranges from 5.0L/square meter s to 6.3L/square meter s, and the ventilation quantity test is qualified.
TABLE 7 results of the Main umbrella tear Strength test
The test result shows that the main umbrella tearing strength of the parachute prepared from the polyarylate silk ranges from 227N to 258N in the warp direction, and the weft tearing strength ranges from 228N to 247N; and (5) the tearing strength test is qualified.
In the present application, the weight of the prepared drogue parachute was measured by a weighing method, and the test results are shown in table 7. The test result shows that the weight of the drogue parachute prepared from the polyarylate silk ranges from 628g to 635g, and the weight test is qualified.
| Sequence number | Test piece numbering | Weight (g) | Conclusion(s) |
| 1 | S180001 | 630 | |
| 2 | S180002 | 635 | Qualified product |
| 3 | S180003 | 632 | Qualified product |
| 4 | S180004 | 628 | Qualified product |
| 5 | S180005 | 635 | Qualified product |
Table 7 weighing test results of main umbrella
In some embodiments, as shown in fig. 1, the umbrella rope 100 is connected with a fuse pulling pin button 200, and a tear-proof strap 201 is sewn on one end of the fuse pulling pin button 200 connected with the umbrella rope 100 for improving the tear-proof force of the fuse pulling pin button 200.
In some embodiments, as shown in fig. 2, the tear-resistant strap 201 is sewn into a partially overlapping loop structure and is nested on the fuse pull tab 200; the overlapping part of the annular structure is sewn in a zigzag line distance mode on the other side of the overlapping part corresponding to the annular structure, and the stitch is 15 +3 /100mm。
The strength of the fuse pulling tab 200 with the tear tape 201 sewn thereto was tested as described in the present specification, and the test results are shown in table 8.
TABLE 8 results of strength test of fuze pull pin tab for main umbrella
From the test results, the tensile force range of the fuse pulling tab 200 sewed with the anti-tearing tape 201 is 2484N-3041N (the qualified standard is more than or equal to 1000N), the tearing force range of the fuse pulling tab 200 is 1545N-1810N (the qualified standard is more than or equal to 1000N), and the strength test of the fuse pulling tab 200 is qualified.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present invention fall within the scope of the present invention.
Claims (5)
1. A polyarylate silk main umbrella for a drogue parachute comprises a canopy and a plurality of parachute ropes connected with the canopy; the method is characterized in that: the umbrella canopy is sewn by polyarylate silk; the umbrella rope is woven by polyamide fibers;
the polyarylate silk comprises base cloth and a coating, wherein the base cloth is polyarylate silk woven by polyarylate fibers; the ventilation amount of the polyarylate silk fabric is not more than 15L/m 2 S; the weight is as follows: 85-110 g/m 2 ；
The coating is a polyurethane composite coating; the polyurethane composite coating comprises a bottom coating and a surface coating, and the bottom coating and the surface coating are sequentially coated on the base cloth; the bottom coating comprises the following components: 100-120 parts of polyurethane A, 10-20 parts of toluene, 10-15 parts of cross-linking agent and 2-4 parts of accelerator; the surface layer coating comprises the following components: 80-100 parts of polyurethane B, 20-25 parts of organic silicon resin, 10-20 parts of toluene, 3-5 parts of cross-linking agent, 3-5 parts of anti-sticking agent and 0.4-0.6 part of antioxidant; the mass ratio of the polyurethane B to the organic silicon resin is 4:1;
the adhesive force of the canopy prepared from the polyarylate silk reaches 1N for not less than 22.27 years.
2. A polyarylate silk main umbrella for a drogue according to claim 1, wherein: the weight of the coating is 2% -2.2% of the weight of the base cloth.
3. A polyarylate silk main umbrella for a drogue according to claim 1 or 2, wherein: the preparation process of the polyarylate silk comprises the following steps:
s1) silk pretreatment: preprocessing warp threads by adopting a three-section whole pulp combining unit, wherein the concentration of the pulp is 12-16 grids;
s2) weaving: the rigid rapier loom is adopted to weave the base cloth, and the weaving process parameters are as follows: 1/110dtex polyarylester is adopted as a warp and weft raw material; the weaving parameters are as follows: reed 16 feather/cm; edge reed 10 feather/cm; 1 harness/heald, 2 harness/reed; side threading method, 1 harness/harness, 4 harness/reed; weave of fabric: plain weave; shuttle box, number of weft accumulator: 1-1 single warp beam; the weft density of the machine is as follows: 28 roots/cm; reed width of upper loom: 146cm.
4. A polyarylate silk main umbrella for a drogue according to claim 1, wherein: the umbrella rope is connected with the fuse pulling pin buckle, and one end of the fuse pulling pin buckle connected with the umbrella rope is sewed with the anti-tearing bag belt.
5. The main polyarylate silk umbrella for a drogue according to claim 4, wherein: the anti-tearing tape is sewn into a partially overlapped annular structure and is nested on the fuse pulling pin button; the overlapping part of the annular structure is sewn in a zigzag line distance mode on the other side of the overlapping part corresponding to the annular structure, and the stitch is 15 +3 /100mm。
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6455449B1 (en) * | 1999-09-03 | 2002-09-24 | Bradford Industries, Inc. | Coated multi-denier mixed fabrics for use in inflatable vehicle restraint systems |
| CN1503748A (en) * | 2001-04-11 | 2004-06-09 | �¶�������ʹ�˾ | Spiral formed flexible fluid containment marine vessel |
| CN201367200Y (en) * | 2009-03-11 | 2009-12-23 | 左功臣 | Portable drink bottle |
| CN102686794A (en) * | 2009-11-12 | 2012-09-19 | 道康宁公司 | Coated fabric products |
| US9663234B1 (en) * | 2015-08-26 | 2017-05-30 | Amazon Technologies, Inc. | Aerial package delivery system |
| CN109466776A (en) * | 2018-10-31 | 2019-03-15 | 航宇救生装备有限公司 | A kind of control large area group's umbrella opening structure |
-
2019
- 2019-12-31 CN CN201911422894.2A patent/CN111038707B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6455449B1 (en) * | 1999-09-03 | 2002-09-24 | Bradford Industries, Inc. | Coated multi-denier mixed fabrics for use in inflatable vehicle restraint systems |
| CN1503748A (en) * | 2001-04-11 | 2004-06-09 | �¶�������ʹ�˾ | Spiral formed flexible fluid containment marine vessel |
| CN201367200Y (en) * | 2009-03-11 | 2009-12-23 | 左功臣 | Portable drink bottle |
| CN102686794A (en) * | 2009-11-12 | 2012-09-19 | 道康宁公司 | Coated fabric products |
| US9663234B1 (en) * | 2015-08-26 | 2017-05-30 | Amazon Technologies, Inc. | Aerial package delivery system |
| CN109466776A (en) * | 2018-10-31 | 2019-03-15 | 航宇救生装备有限公司 | A kind of control large area group's umbrella opening structure |
Non-Patent Citations (1)
| Title |
|---|
| 芳香族聚酯液晶Vectran纤维的性能与应用;覃俊,王桦,陈丽萍;《纺织科技进展》;20171231;1-4 * |
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