CN101913270B - Foldable-expandable shape memory supporting pipe and preparation method thereof - Google Patents
Foldable-expandable shape memory supporting pipe and preparation method thereof Download PDFInfo
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- CN101913270B CN101913270B CN2010102351184A CN201010235118A CN101913270B CN 101913270 B CN101913270 B CN 101913270B CN 2010102351184 A CN2010102351184 A CN 2010102351184A CN 201010235118 A CN201010235118 A CN 201010235118A CN 101913270 B CN101913270 B CN 101913270B
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Abstract
The invention discloses a foldable-expandable shape memory supporting pipe and a preparation method thereof, relates to the shape memory supporting pipe and the preparation method thereof and solves the problems of large size and large weight of the conventional folded shape memory supporting pipe made of shape memory alloy. The product consists of an inner polyimide lining and an outer wall, wherein the outer wall consists of a prepreg layer, an electric heating layer and a heat insulating layer from inside to outside. The preparation method comprises the following steps of: preparing shape memory resin glue solution; coating the glue solution on pre-heated fiber cloth; baking and sewing the fiber cloth to obtain a prepreg pipe; arranging a heating wire between the two polyimide films to obtain the electric heating layer; placing the inner polyimide lining with cylindrical shape into the prepreg pipe; filling the pipe with air; covering the electric heating layer outside the prepreg pipe; winding the polyimide heat insulating layer on the pipe; and raising the temperature and curing to obtain the supporting pipe. The supporting pipe has the advantages of light weight, small size, and shape recovery rate of 99 to 100 percent and can be used as a spatial structural material.
Description
Technical field
The present invention relates to shape memory stay pipe and preparation method thereof.
Background technology
Shape-memory material is to be heated to it to the material that shape memory function is arranged that has original-shape more than the shape memory temperature; Apply external force and make its distortion; Cooling under deformation state; Freezing stress, when being heated to uniform temperature again, thereby the stress that makes material store is released and is returned to original shape.Existing application is very strong in the mechanical property of the marmem stay pipe in space, but the folding back shared volume of this stay pipe is big, and weight is big, is not easy to lift-off and carries, and has limited the application of marmem as the space structure material.
Summary of the invention
The present invention be for solve the shared volume in the existing folding back of shape memory stay pipe that utilizes marmem preparation big with the big problem of weight, and provide a kind of collapsible-the shape memory stay pipe of expansion and preparation method thereof.
Of the present invention a kind of collapsible-the shape memory stay pipe that launches is made up of the polyimides inner bag outer wall outer with being wrapped in the polyimides inner bag; Wherein the outer outer wall of polyimides inner bag is made up of preimpregnation layer of cloth, electric heating layer and thermal insulation layer from the inside to the outside; The preimpregnation layer of cloth is processed by composite material of shape memory; Electric heating layer by the two layers of polyimide film and between the two layers of polyimide film snakelike electrical heating lead of arranging form; Thermal insulation layer is made up of Kapton; The pipe that is shaped as hollow cylinder shape after the shape memory stay pipe launches, the two ends of cylindrical shape pipe with the aluminium lid sealing, are drawn the breather pipe of polyimides inner bag and the electrical heating lead of electric heating layer from the aluminium lid of cylinder bodily form pipe one side respectively.
Of the present invention a kind of collapsible-preparation method of the shape memory stay pipe that launches carries out according to the following steps: one, take by weighing 70 parts ~ 90 parts epoxy resin E-51,10 parts ~ 30 parts polypropylene glycol diglycidyl ethers and 12 parts ~ 15 part 4 by ratio of quality and the number of copies; 4 '-MDA also joins in the reactor; Be to stir 5min ~ 10min under 80 ℃ ~ 85 ℃ the condition in temperature; Reduce to room temperature, obtain the shape memory resin glue; Two, press the size clip of internal surface area of shape memory stay pipe long for a, widely be the rectangular fiber cloth of b+2cm; And fibre placement, temperature handled 0.8h ~ 1.5h in being 70 ℃～80 ℃ baking oven; Mass ratio by cloth and shape memory resin glue is that 1:4 ~ 9 will evenly be brushed on cloth along a direction through the shape memory resin glue of step 1 preparation then; Being placed on temperature again and being in 80 ℃ ~ 85 ℃ the baking oven and handle 20min ~ 25min, obtain preimpregnation cloth, is that the both sides of a are sewed up with the length of preimpregnation cloth again; The distance of sewing up straight line and edge is 1cm, and obtaining length is the preimpregnation stringing of b/ π for a, diameter; Three, by long for a, diameter d=b/ π+(1cm ~ 3cm) makes the polyimides inner bag of cylindrical shape, on a bottom surface of cylindrical shape polyimides inner bag, connects breather pipe; Four, by long for a, wide be two rectangle Kaptons of b clip; The snakelike heating wires of arranging on a Kapton; The heating wires spacing is 10mm, and heating wires is fixed on the Kapton with adhesive, then another piece Kapton is covered with; Make heating wires between the two layers of polyimide film; And two jointings of heating wires are positioned at the same broadside side of Kapton, the two layers of polyimide film are fixed with adhesive again, obtain electric heating layer; Five, the polyimides inner bag is packed in the preimpregnation stringing of step 2 preparation, to the inflation of polyimides inner bag, makes the preimpregnation stringing launch to be cylindrical shape, will be wrapped in outside the preimpregnation stringing through the electric heating layer of step 4 preparation then, and interface is fixed with adhesive; Then outside electric heating layer, be wrapped with thermal insulation layer again, thermal insulation layer is made up of 3 layers ~ 5 strata imide membranes, obtains cylindrical tube; Six: with the heating wires energising of the electric heating layer of cylindrical tube, make cylindrical tube be warming up to 80 ℃ ~ 85 ℃ and keep 3h ~ 3.5h, continue to be warming up to 150 ℃ ~ 155 ℃ and keep 4.5h ~ 5h, obtain the cylinder bodily form pipe that preimpregnation cloth solidifies; Seven: the two ends of the cylinder bodily form pipe that solidifies at preimpregnation cloth add aluminium end cap, and pick out the heating wires of breather pipe and the electric heating layer of polyimides inner bag, obtain the shape memory stay pipe of collapsible-expansion; Wherein the value of a * b in the step 2 equals the internal surface area of shape memory stay pipe.
Of the present invention collapsible-as the one of which structure sheaf, this layer is matrix resin with lightly crosslinked thermosetting epoxy resin to the shape memory stay pipe that launches with composite material of shape memory, and with fiber reinforcement.Of the present invention collapsible-the shape memory stay pipe that launches folding-launch principle and be: the shape memory stay pipe is heated to more than the shape memory temperature of composite material of shape memory; Carry out the stay pipe folded deformation; System is carried out restricted folding generation storage stress ability more than shape memory temperature like this; Cool off fast then, just can obtain the temporary transient shape of this folded form.If be heated to the recovery temperature of composite material of shape memory,, change original shape into, i.e. deployed condition just stay pipe can discharge the stress ability of storage.
Of the present invention collapsible-specific operation process when the shape memory stay pipe that launches is used for the space is: collapsible-shape memory stay pipe of launching that will be inflating expanded on ground is heated to more than the material shape memory temperature, makes the material folding packing in back that limbers up, behind the arrival planned orbit that launches; Whole system is heated; Up to the recovery temperature of composite material of shape memory, inflating expanded, after stay pipe launches fully; Stop heating; Be lower than the shape memory recovery temperature of material when whole system temperature after, stay pipe shows rigidity, can carry out its support function.
Of the present invention collapsible-the shape memory stay pipe that launches; Process by organic film and high molecular polymer; Quality is with 1/10th to 1/8th of the marmem of volume, light weight, and the shared volume in folding back is merely with 1/4th to 1/5th of the marmem of volume; And when being lower than the shape memory recovery temperature of material; The hot strength of the shape memory stay pipe of collapsible-expansion is 68MPa ~ 150MPa, can satisfy the requirement of strength of developing space inflation shape memory stay pipe, is convenient to aircraft and carries lift-off.The present invention is deployed into and temperature when being higher than shape memory temperature at the shape memory stay pipe, and system is inflated, and improves the restoring force of system with this, and the shape of stay pipe can return to 99% ~ 100% very soon.When structural system is launched, and be cooled to shape memory temperature below 15 ℃ the time, structure can become rigidity once more, and does not need the blowing pressure to support.And launch again after folding, shape recovery ratio can reach 99% ~ 100%; Enabling capabilities is strong; Under the room temperature condition, storage period reaches 3 years, in 2 years, the phenomenon that performance descends can not occur.
Description of drawings
Fig. 1 is the sectional view of the collapsible-shape memory stay pipe that launches of the specific embodiment one when launching, and wherein 1 is thermal insulation layer, and 2 is electric heating layer; 3 are the preimpregnation layer of cloth; 4 is the polyimides inner bag.
The specific embodiment
The specific embodiment one: the shape memory stay pipe of a kind of collapsible-expansion of this embodiment is made up of polyimides inner bag 4 outer wall outer with being wrapped in the polyimides inner bag; Wherein the outer outer wall of polyimides inner bag is made up of preimpregnation layer of cloth 3, electric heating layer 2 and thermal insulation layer 1 from the inside to the outside; Preimpregnation layer of cloth 3 is processed by composite material of shape memory; Electric heating layer 2 by the two layers of polyimide film and between the two layers of polyimide film snakelike electrical heating lead of arranging form; Thermal insulation layer 1 is made up of Kapton; The pipe that is shaped as hollow cylinder shape after the shape memory stay pipe launches, the two ends of cylindrical shape pipe with the aluminium lid sealing, are drawn the breather pipe of polyimides inner bag and the electrical heating lead of electric heating layer from the aluminium lid of cylinder bodily form pipe one side respectively.
The shape memory stay pipe of the collapsible-expansion of this embodiment; Process by organic film and high molecular polymer; Quality is with 1/10th to 1/8th of the marmem of volume, light weight, and the shared volume in folding back is merely with 1/4th to 1/5th of the marmem of volume; And when being lower than the shape memory recovery temperature of material; The hot strength of the shape memory stay pipe of collapsible-expansion is 68MPa ~ 150MPa, can satisfy the requirement of strength of developing space inflation shape memory stay pipe, is convenient to aircraft and carries lift-off.This embodiment is deployed into and temperature when being higher than shape memory temperature at the shape memory stay pipe, and system is inflated, and improves the restoring force of system with this, and the shape of stay pipe can return to 99% ~ 100% very soon.When structural system is launched, and be cooled to shape memory temperature below 15 ℃ the time, structure can become rigidity once more, and does not need the blowing pressure to support.And launch again after folding, shape recovery ratio can reach 99% ~ 100%; Enabling capabilities is strong; Under the room temperature condition, storage period reaches 3 years, in 2 years, the phenomenon that performance descends can not occur.
The specific embodiment two: what this embodiment and the specific embodiment one were different is: preimpregnation layer of cloth 3 is processed by composite material of shape memory; The preparation method of composite material of shape memory carries out according to the following steps: a, take by weighing 70 parts ~ 90 parts epoxy resin E-51,10 parts ~ 30 parts polypropylene glycol diglycidyl ethers and 12 parts ~ 15 part 4 by ratio of quality and the number of copies; 4 '-MDA; Be to stir 5min ~ 10min under 80 ℃ ~ 85 ℃ the condition in temperature; Reduce to room temperature, obtain the shape memory resin glue; B, fibre placement, temperature is handled 0.8h ~ 1.5h in being 70 ℃～80 ℃ baking oven; Mass ratio by cloth and shape memory resin glue is that 1:4 ~ 9 will evenly be brushed on cloth along a direction through the shape memory resin glue that step a processes then; Be placed on temperature again and be in 80 ℃ ~ 85 ℃ the baking oven and handle 20min ~ 25min, obtain preimpregnation cloth; C, will be warming up to 80 ℃ ~ 85 ℃ and keep 3h ~ 3.5h, continue to be warming up to 150 ℃ ~ 155 ℃ and keep 4.5h ~ 5h, obtain composite material of shape memory through the preimpregnation cloth that step b obtains.Other is identical with the specific embodiment one.
The function of collapsible-expansion that the composite material of shape memory of this embodiment can guarantee that the shape memory stay pipe has.
The specific embodiment three: what this embodiment was different with the specific embodiment one or two is: the preparation method of composite material of shape memory carries out according to the following steps: a, take by weighing 80 parts of epoxy resin E-51,20 parts of polypropylene glycol diglycidyl ethers and 13 part 4 by ratio of quality and the number of copies; 4 '-MDA; Be to stir 8min under 82 ℃ the condition in temperature; Reduce to room temperature, obtain the shape memory resin glue; B, fibre placement, temperature is handled 1.0h in being 75 ℃ baking oven; Mass ratio by cloth and shape memory resin glue is that 1:6 will evenly brush on cloth along a direction through the shape memory resin glue that step a processes then; Be placed on temperature again and be in 82 ℃ the baking oven and handle 23min, obtain preimpregnation cloth; C, will be warming up to 83 ℃ and keep 3.2h, continue to be warming up to 153 ℃ and keep 4.8h, obtain composite material of shape memory through the preimpregnation cloth that step b obtains.Other is identical with the specific embodiment one or two.
The specific embodiment four: what this embodiment was different with one of specific embodiment one to three is: thermal insulation layer 1 is made up of 3 layers ~ 5 strata imide membranes.Other is identical with one of specific embodiment one to three.
3 layers ~ 5 strata imide membranes of this embodiment have heat insulation effect, and the shape memory stay pipe of collapsible-expansion is rapidly heated to more than the shape memory temperature.
The specific embodiment five: what this embodiment was different with one of specific embodiment one to four is: thermal insulation layer 1 is made up of 4 strata imide membranes.Other is identical with one of specific embodiment one to four.
The specific embodiment six: the preparation method of a kind of collapsible-shape memory stay pipe that launches of this embodiment carries out according to the following steps: one, take by weighing 70 parts ~ 90 parts epoxy resin E-51,10 parts ~ 30 parts polypropylene glycol diglycidyl ethers and 12 parts ~ 15 part 4 by ratio of quality and the number of copies; 4 '-MDA also joins in the reactor; Be to stir 5min ~ 10min under 80 ℃ ~ 85 ℃ the condition in temperature; Reduce to room temperature, obtain the shape memory resin glue; Two, press the size clip of internal surface area of shape memory stay pipe long for a, widely be the rectangular fiber cloth of b+2cm; And fibre placement, temperature handled 0.8h ~ 1.5h in being 70 ℃～80 ℃ baking oven; Mass ratio by cloth and shape memory resin glue is that 1:4 ~ 9 will evenly be brushed on cloth along a direction through the shape memory resin glue of step 1 preparation then; Being placed on temperature again and being in 80 ℃ ~ 85 ℃ the baking oven and handle 20min ~ 25min, obtain preimpregnation cloth, is that the both sides of a are sewed up with the length of preimpregnation cloth again; The distance of sewing up straight line and edge is 1cm, and obtaining length is the preimpregnation stringing of b/ π for a, diameter; Three, by long for a, diameter d=b/ π+(1cm ~ 3cm) makes the polyimides inner bag 4 of cylindrical shape, on a bottom surface of cylindrical shape polyimides inner bag, connects breather pipe; Four, by long for a, wide be two rectangle Kaptons of b clip; The snakelike heating wires of arranging on a Kapton; The heating wires spacing is 10mm, and heating wires is fixed on the Kapton with adhesive, then another piece Kapton is covered with; Make heating wires between the two layers of polyimide film; And two jointings of heating wires are positioned at the same broadside side of Kapton, the two layers of polyimide film are fixed with adhesive again, obtain electric heating layer 2; Five, the polyimides inner bag is packed in the preimpregnation stringing of step 2 preparation, to the inflation of polyimides inner bag, makes the preimpregnation stringing launch to be cylindrical shape, will be wrapped in outside the preimpregnation stringing through the electric heating layer 2 of step 4 preparation then, and interface is fixed with adhesive; Then outside electric heating layer 2, be wrapped with thermal insulation layer 1 again, thermal insulation layer is made up of 3 layers ~ 5 strata imide membranes, obtains cylinder bodily form pipe; Six: with the heating wires energising of the electric heating layer 2 of cylinder bodily form pipe, make cylinder bodily form pipe be warming up to 80 ℃ ~ 85 ℃ and keep 3h ~ 3.5h, continue to be warming up to 150 ℃ ~ 155 ℃ and keep 4.5h ~ 5h, obtain the cylinder bodily form pipe that preimpregnation layer of cloth 3 solidifies; Seven: the two ends of the cylindrical bodily form pipe that solidifies at preimpregnation layer of cloth 3 add aluminium end cap, and pick out the heating wires of breather pipe and the electric heating layer of polyimides inner bag, obtain the shape memory stay pipe of collapsible-expansion; Wherein the value of a * b in the step 2 equals the internal surface area of shape memory stay pipe.
The shape memory stay pipe of the collapsible-expansion of the method preparation of this embodiment; Process by organic film and high molecular polymer; Quality is with 1/10th to 1/8th of the marmem of volume, light weight, and the shared volume in folding back is merely with 1/4th to 1/5th of the marmem of volume; And when being lower than the shape memory recovery temperature of material; The hot strength of the shape memory stay pipe of collapsible-expansion is 68MPa ~ 150MPa, can satisfy the requirement of strength of developing space inflation shape memory stay pipe, is convenient to aircraft and carries lift-off.This embodiment is deployed into and temperature when being higher than shape memory temperature at the shape memory stay pipe, and system is inflated, and improves the restoring force of system with this, and the shape of stay pipe can return to 99% ~ 100% very soon.When structural system is launched, and be cooled to shape memory temperature below 15 ℃ the time, structure can become rigidity once more, and does not need the blowing pressure to support.And launch again after folding, shape recovery ratio can reach 99% ~ 100%; Enabling capabilities is strong; Under the room temperature condition, storage period reaches 3 years, in 2 years, the phenomenon that performance descends can not occur.
The specific embodiment seven: what this embodiment and the specific embodiment six were different is: take by weighing 73 parts ~ 87 parts epoxy resin E-51,12 parts ~ 28 parts polypropylene glycol diglycidyl ethers and 12.5 parts ~ 14.5 part 4,4 '-MDA by ratio of quality and the number of copies in the step 1.Other and specific embodiment six phase are together.
The specific embodiment eight: what this embodiment was different with the specific embodiment six or seven is: take by weighing 80 parts of epoxy resin E-51,20 parts of polypropylene glycol diglycidyl ethers and 13 part 4,4 '-MDA by ratio of quality and the number of copies in the step 1.Other is identical with the specific embodiment six or seven.
The specific embodiment nine: what this embodiment was different with one of specific embodiment six to eight is: epoxy resin E-51, polypropylene glycol diglycidyl ether and 4 in the step 1; 4 '-MDA joins in the reactor, in temperature is to stir 6min ~ 9min under 81 ℃ ~ 84 ℃ the condition.Other is identical with one of specific embodiment six to eight.
The specific embodiment ten: what this embodiment was different with one of specific embodiment six to nine is: epoxy resin E-51, polypropylene glycol diglycidyl ether and 4 in the step 1; 4 '-MDA joins in the reactor, in temperature is to stir 8min under 83 ℃ the condition.Other is identical with one of specific embodiment six to nine.
The specific embodiment 11: what this embodiment was different with one of specific embodiment six to ten is: the cloth described in the step 2 is aryl fiber cloth, carbon cloth, glass fabric, basalt fiber cloth, polyparaphenylene's benzo dioxazole (PBO) cloth, vectra polyethylene (Vectran) cloth or this hectogram high-strength polyethylene (Spetrca) cloth.Other is identical with one of specific embodiment six to ten.
The specific embodiment 12: what this embodiment was different with one of specific embodiment six to 11 is: the fibre placement of cutting out in the step 2 is handled 0.9h ~ 1.3h in temperature is 72 ℃～78 ℃ baking oven.Other is identical with one of specific embodiment six to 11.
In this embodiment cloth is carried out preliminary treatment earlier; Its effect is to make cloth become soft; Be convenient to the even of postorder brushing; The waving property material that adsorbs on it is removed, avoided volatile material in material, to form bubble, influence the intensity of the shape memory stay pipe of collapsible-expansion.
The specific embodiment 13: what this embodiment was different with one of specific embodiment six to 12 is: the fibre placement of cutting out in the step 2 is handled 1.0h in temperature is 75 ℃ baking oven.Other is identical with one of specific embodiment six to 12.
The specific embodiment 14: what this embodiment was different with one of specific embodiment six to 13 is: the mass ratio of cloth and shape memory resin glue is 1:5 ~ 8 in the step 2.Other is identical with one of specific embodiment six to 13.
The setting of the mass ratio of cloth of this embodiment and shape memory resin glue can guarantee that collapsible-shape memory stay pipe that launches has the memory function of good collapsible-expansion, and has good intensity and toughness.
The specific embodiment 15: what this embodiment was different with one of specific embodiment six to 14 is: the mass ratio of cloth and shape memory resin glue is 1:7 in the step 2.Other is identical with one of specific embodiment six to 14.
The specific embodiment 16: what this embodiment was different with one of specific embodiment six to 15 is: the brushing of shape memory resin glue is placed on temperature and is in 81 ℃ ~ 84 ℃ the baking oven and handle 21min ~ 24min after on the cloth in the step 2.Other is identical with one of specific embodiment six to 15.
The effect of the processing of this embodiment is the bubble in the elimination system, if because the bubble of not eliminating in the system comprises in the middle material, can reduce the intensity of material.
The specific embodiment 17: what this embodiment was different with one of specific embodiment six to 16 is: thermal insulation layer is made up of 4 strata imide membranes in the step 5.Other is identical with one of specific embodiment six to 16.
The setting that this embodiment is such can guarantee good heat insulation effect, and the shape memory stay pipe of collapsible-expansion is rapidly heated to more than the shape memory temperature.
The specific embodiment 18: what this embodiment was different with one of specific embodiment six to 17 is: make cylinder bodily form pipe be warming up to 81 ℃ ~ 84 ℃ and keep 3.1h ~ 3.4h in the step 6, continue to be warming up to 151 ℃ ~ 154 ℃ and keep 4.6h ~ 4.9h.Other is identical with one of specific embodiment six to 17.
The mode of the processing of this embodiment can make the shape memory resin completion of cure, and crosslink density is moderate, if be rapidly heated causing crosslink density excessive, the fragility of material is strengthened.
The specific embodiment 19: what this embodiment was different with one of specific embodiment six to 18 is: make cylinder bodily form pipe be warming up to 83 ℃ and keep 3.3h in the step 6, continue to be warming up to 153 ℃ and keep 4.8h.Other is identical with one of specific embodiment six to 18.
The specific embodiment 20: the preparation method of a kind of collapsible-shape memory stay pipe that launches of this embodiment carries out according to the following steps: one, take by weighing 87 parts of epoxy resin E-51,13 parts of polypropylene glycol diglycidyl ethers and 13.26 part 4 by ratio of quality and the number of copies; 4 '-MDA; Be to stir 5min under 80 ℃ the condition in temperature; Reduce to room temperature, obtain the shape memory resin glue; Two, press the size clip of internal surface area of shape memory stay pipe long for 100cm, widely be the rectangle aryl fiber cloth of 33.4cm; And aramid fiber is arranged in temperature is to handle 1.0h in 80 ℃ the baking oven; Mass ratio by aryl fiber cloth and shape memory resin glue is that 1:4 will evenly brush on aryl fiber cloth along a direction through the shape memory resin glue of step 1 preparation then; Be placed on temperature again and be in 80 ℃ the baking oven and keep 20min; Obtain the preimpregnation aryl fiber cloth; Be that the both sides of 100cm are closely sewed up with the length of preimpregnation aryl fiber cloth again, the distance of sewing up straight line and edge is 1cm, obtains the long 100cm of being, diameter is the preimpregnation aramid fiber stringing of 10 cm; Three, be the polyimides inner bag that 100cm, diameter 12cm process cylindrical shape by length, on a cylindrical bottom surface, connect breather pipe; Four, by long for 100cm, wide be two rectangle Kaptons of 33.4cm clip; The snakelike heating wires of arranging on a Kapton; The heating wires spacing is 10mm, and heating wires is fixed on the Kapton with adhesive, then another piece Kapton is covered with; Make heating wires between the two layers of polyimide film; And two jointings of heating wires are positioned at the same broadside side of Kapton, the two layers of polyimide film are fixed with adhesive again, obtain electric heating layer; Five, the polyimides inner bag is packed in the preimpregnation aramid fiber stringing of step 2 preparation; Inflate to the polyimides inner bag; Make preimpregnation aramid fiber stringing launch to be cylindrical shape, will be wrapped in outside the preimpregnation stringing through the electric heating layer of step 4 preparation then, interface is fixed with adhesive; Then outside electric heating layer, be wrapped with thermal insulation layer again, thermal insulation layer is made up of 3 strata imide membranes, obtains cylindrical tube; Six: with the heating wires energising of the electric heating layer of cylindrical tube, make cylindrical tube intensification degree to 80 ℃ and keep 3.5h, and then be warming up to 150 ℃ and keep 5.5h, the cylindrical tube that obtains solidifying; Seven: the two ends at the cylindrical tube that solidifies add aluminium end cap, and pick out the heating wires of the breather pipe and the electric heating layer of polyimides inner bag, obtain the shape memory stay pipe of collapsible-expansion.
Of the present invention collapsible-the shape memory stay pipe that launches; Processed by organic film and high molecular polymer, quality is with 1/10th of the marmem of volume, light weight; The shared volume in folding back is merely with 1/4th of the marmem of volume; And the hot strength of its processing when being lower than the shape memory recovery temperature of material be 98MPa, can satisfy the requirement of strength of developing space inflation shape memory stay pipe, is convenient to aircraft and carries lift-off.The present invention is deployed into and temperature when being higher than shape memory temperature at the shape memory stay pipe, and system is inflated, and improves the restoring force of system with this, and the shape of stay pipe can return to 99% very soon.When structural system is launched, and be cooled to shape memory temperature below 15 ℃ the time, structure can become rigidity once more, and does not need the blowing pressure to support.And launch again after folding, shape recovery ratio can reach 99% ~ 100%; Enabling capabilities is strong; Under the room temperature condition, storage period reaches 2 years, in 1 year, the phenomenon that performance descends can not occur.
The specific embodiment 21: the preparation method of a kind of collapsible-shape memory stay pipe that launches of this embodiment carries out according to the following steps: one, take by weighing 87 parts of epoxy resin E-51,13 parts of polypropylene glycol diglycidyl ethers and 13.26 part 4 by ratio of quality and the number of copies; 4 '-MDA; Be to stir 5min under 80 ℃ the condition in temperature; Reduce to room temperature, obtain the shape memory resin glue; Two, clip long for 100cm, wide be the rectangle carbon cloth of 33.4cm; And carbon cloth is placed temperature is that 80 ℃ baking oven is handled 1.0h; Mass ratio by carbon cloth and shape memory resin glue is that 1:9 will evenly brush on carbon cloth along a direction through the shape memory resin glue of step 1 preparation then; Being placed on temperature again and being in 80 ℃ the baking oven and handle 20min, obtain the preimpregnation carbon cloth, is that the both sides of 100cm are closely sewed up with the length of preimpregnation carbon cloth again; The distance of sewing up straight line and edge is 1cm, and obtaining length is the preimpregnation carbon fiber stringing of 10cm for 100cm, diameter; Three, by long polyimides inner bag, on a cylindrical bottom surface, connect breather pipe for 100cm, diameter 12cm making cylindrical shape; Four, by long for 100cm, wide be two rectangle Kaptons of 33.4cm clip; The snakelike heating wires of arranging on a Kapton; The heating wires spacing is 10mm, and heating wires is fixed on the Kapton with adhesive, then another piece Kapton is covered with; Make heating wires between the two layers of polyimide film; And two jointings of heating wires are positioned at the same broadside side of Kapton, the two layers of polyimide film are fixed with adhesive again, obtain electric heating layer; Five, the polyimides inner bag is packed in the preimpregnation carbon fiber stringing of step 2 preparation; Inflate to the polyimides inner bag; Make preimpregnation carbon fiber stringing launch to be cylindrical shape, will be wrapped in outside the preimpregnation stringing through the electric heating layer of step 4 preparation then, interface is fixed with adhesive; Then outside electric heating layer, be wrapped with thermal insulation layer again, thermal insulation layer is made up of 3 strata imide membranes, obtains cylindrical tube; Six: with the heating wires energising of the electric heating layer of cylindrical tube, make cylindrical tube be warming up to 85 ℃ and keep 3h, and then be warming up to 155 ℃ and keep 5h, the cylindrical tube that obtains solidifying; Seven: the two ends at the cylindrical tube that solidifies add aluminium end cap, and pick out the heating wires of the breather pipe and the electric heating layer of polyimides inner bag, obtain the shape memory stay pipe of collapsible-expansion.
Of the present invention collapsible-the shape memory stay pipe that launches; Processed by organic film and high molecular polymer, quality is with 1/8th of the marmem of volume, light weight; The shared volume in folding back is merely with 1/4th of the marmem of volume; And the hot strength of its processing when being lower than the shape memory recovery temperature of material be 120MPa, can satisfy the requirement of strength of developing space inflation shape memory stay pipe, is convenient to aircraft and carries lift-off.The present invention is deployed into and temperature when being higher than shape memory temperature at the shape memory stay pipe, and system is inflated, and improves the restoring force of system with this, and the shape of stay pipe can return to 100% very soon.When structural system is launched, and be cooled to shape memory temperature below 15 ℃ the time, structure can become rigidity once more, and does not need the blowing pressure to support.And launch again after folding, shape recovery ratio can reach 100%; Enabling capabilities is strong; Under the room temperature condition, storage period reaches 3 years, in 2 years, the phenomenon that performance descends can not occur.
Claims (9)
1. collapsible-shape memory stay pipe of launching; It is characterized in that collapsible-shape memory stay pipe of launching by polyimides inner bag (4) be wrapped in polyimides inner bag outer wall outward and form; Wherein the outer outer wall of polyimides inner bag is made up of preimpregnation layer of cloth (3), electric heating layer (2) and thermal insulation layer (1) from the inside to the outside; Preimpregnation layer of cloth (3) is processed by composite material of shape memory; Electric heating layer (2) by the two layers of polyimide film and between the two layers of polyimide film snakelike electrical heating lead of arranging form, thermal insulation layer (1) is made up of Kapton, the pipe that is shaped as hollow cylinder shape after the shape memory stay pipe launches; The breather pipe of polyimides inner bag and the electrical heating lead of electric heating layer with the aluminium lid sealing, are drawn from the aluminium lid of cylinder bodily form pipe one side respectively in the two ends of cylindrical shape pipe; Wherein, Preimpregnation layer of cloth (3) is processed by composite material of shape memory; The preparation method of composite material of shape memory carries out according to the following steps: a, take by weighing 70 parts～90 parts epoxy resin E-51,10 parts～30 parts polypropylene glycol diglycidyl ethers and 12 parts～15 part 4 by ratio of quality and the number of copies, 4 '-MDA is to stir 5min～10min under 80 ℃～85 ℃ the condition in temperature; Reduce to room temperature, obtain the shape memory resin glue; B, fibre placement, temperature is handled 0.8h～1.5h in being 70 ℃～80 ℃ baking oven; Then by the mass ratio of cloth and shape memory resin glue be 1: 4～9 shape memory resin glues that will process through step a along a direction evenly brushing on cloth; Be placed on temperature again and be in 80 ℃～85 ℃ the baking oven and handle 20min～25min, obtain preimpregnation cloth; C, will be warming up to 80 ℃～85 ℃ and keep 3h～3.5h, continue to be warming up to 150 ℃～155 ℃ and keep 4.5h～5h, obtain composite material of shape memory through the preimpregnation cloth that step b obtains.
2. according to claim 1 a kind of collapsible-the shape memory stay pipe that launches, it is characterized in that thermal insulation layer (1) is made up of 3 layers～5 strata imide membranes.
3. as claimed in claim 1 a kind of collapsible-preparation method of the shape memory stay pipe that launches; The preparation method who it is characterized in that collapsible-shape memory stay pipe of launching carries out according to the following steps: one, take by weighing 70 parts～90 parts epoxy resin E-51,10 parts～30 parts polypropylene glycol diglycidyl ethers and 12 parts～15 part 4 by ratio of quality and the number of copies; 4 '-MDA also joins in the reactor; Be to stir 5min～10min under 80 ℃～85 ℃ the condition in temperature; Reduce to room temperature, obtain the shape memory resin glue; Two, press the size clip of internal surface area of shape memory stay pipe long for a, widely be the rectangular fiber cloth of b+2cm; And fibre placement, temperature handled 0.8h～1.5h in being 70 ℃～80 ℃ baking oven; Then by the mass ratio of cloth and shape memory resin glue be 1: 4～9 will through the shape memory resin glue of step 1 preparation along a direction evenly brushing on cloth; Being placed on temperature again and being in 80 ℃～85 ℃ the baking oven and handle 20min～25min, obtain preimpregnation cloth, is that the both sides of a are sewed up with the length of preimpregnation cloth again; The distance of sewing up straight line and edge is 1cm, and obtaining length is the preimpregnation stringing of b/ π for a, diameter; Three, by long for a, diameter d=b/ π+(1cm～3cm) makes the polyimides inner bag (4) of cylindrical shape, on a bottom surface of cylindrical shape polyimides inner bag, connects breather pipe; Four, by long for a, wide be two rectangle Kaptons of b clip; The snakelike heating wires of arranging on a Kapton; The heating wires spacing is 10mm, and heating wires is fixed on the Kapton with adhesive, then another piece Kapton is covered with; Make heating wires between the two layers of polyimide film; And two jointings of heating wires are positioned at the same broadside side of Kapton, the two layers of polyimide film are fixed with adhesive again, obtain electric heating layer (2); Five, the polyimides inner bag is packed in the preimpregnation stringing of step 2 preparation, to the inflation of polyimides inner bag, makes the preimpregnation stringing launch to be cylindrical shape, will be wrapped in outside the preimpregnation stringing through the electric heating layer (2) of step 4 preparation then, and interface is fixed with adhesive; Then outside electric heating layer (2), be wrapped with thermal insulation layer (1) again, thermal insulation layer (1) is made up of 3 layers～5 strata imide membranes, obtains cylinder bodily form pipe; Six: with the heating wires energising of the electric heating layer (2) of cylinder bodily form pipe, make cylinder bodily form pipe be warming up to 80 ℃～85 ℃ and keep 3h～3.5h, continue to be warming up to 150 ℃～155 ℃ and keep 4.5h～5h, obtain the cylinder bodily form pipe that preimpregnation layer of cloth (3) solidifies; Seven: the two ends of the cylindrical bodily form pipe that solidifies at preimpregnation layer of cloth (3) add aluminium end cap, and pick out the heating wires of breather pipe and the electric heating layer of polyimides inner bag, obtain the shape memory stay pipe of collapsible-expansion; Wherein the value of a * b in the step 2 equals the internal surface area of shape memory stay pipe.
4. according to claim 3 a kind of collapsible-preparation method of the shape memory stay pipe that launches; It is characterized in that in the step 1 taking by weighing 73 parts～87 parts epoxy resin E-51,12 parts～28 parts polypropylene glycol diglycidyl ethers and 12.5 parts～14.5 part 4,4 '-MDA by ratio of quality and the number of copies.
According to claim 3 or 4 described a kind of collapsible-preparation method of the shape memory stay pipe that launches; It is characterized in that epoxy resin E-51 in the step 1, polypropylene glycol diglycidyl ether and 4; 4 '-MDA joins in the reactor, in temperature is to stir 6min～9min under 81 ℃～84 ℃ the condition.
6. according to claim 5 a kind of collapsible-preparation method of the shape memory stay pipe that launches, it is characterized in that the cloth described in the step 2 is aryl fiber cloth, carbon cloth, glass fabric, basalt fiber cloth, polyparaphenylene's benzo dioxazole cloth or this hectogram high-strength polyethylene fiber cloth.
According to claim 3,4 or 6 described a kind of collapsible-preparation method of the shape memory stay pipe that launches, the fibre placement that it is characterized in that cutting out in the step 2 is handled 0.9h～1.3h in temperature is 72 ℃～78 ℃ baking oven.
8. according to claim 7 a kind of collapsible-preparation method of the shape memory stay pipe that launches, it is characterized in that the mass ratio of cloth and shape memory resin glue is 1: 5～8 in the step 2.
According to claim 3,4,6 or 8 described a kind of collapsible-preparation method of the shape memory stay pipe that launches; It is characterized in that making in the step 6 cylinder bodily form pipe to be warming up to 81 ℃～84 ℃ and keep 3.1h～3.4h, continue to be warming up to 151 ℃～154 ℃ and keep 4.6h～4.9h.
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