CN106079691A - A kind of flexible anti-heat-barrier material of efficiently variable density and preparation method - Google Patents

A kind of flexible anti-heat-barrier material of efficiently variable density and preparation method Download PDF

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Publication number
CN106079691A
CN106079691A CN201610416030.XA CN201610416030A CN106079691A CN 106079691 A CN106079691 A CN 106079691A CN 201610416030 A CN201610416030 A CN 201610416030A CN 106079691 A CN106079691 A CN 106079691A
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heat
barrier material
layer
variable density
fibre
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CN106079691B (en
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罗丽娟
梁馨
谭珏
方洲
毛科铸
宋朝晖
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China Academy of Launch Vehicle Technology CALT
Aerospace Research Institute of Materials and Processing Technology
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China Academy of Launch Vehicle Technology CALT
Aerospace Research Institute of Materials and Processing Technology
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Abstract

A kind of flexible anti-heat-barrier material of efficiently variable density and preparation method, relate to the flexible anti-heat-barrier material field of variable density；The flexible anti-heat-barrier material of efficient variable density in the present invention uses the mode of multilamellar anti-heat shield superposition, and self-heating face ecto-entad, from solar heat protection part to insulating portion, density is sequentially reduced.The anti-heat shield of each layer is separately formed, and with rubber as matrix, fibrous braid, chopped strand produce hole as reinforcement, rubber matrix by the way of physical blowing, chemical blowing, and the size of hole is controlled by the addition of foaming agent with how many.Can be used for the flexible heat insulation material of deployable aerodynamic decelerator it can also be used to the soft skirt of engine bottom solar heat protection, flexible heat shroud or other flexible anti-hot product, section.

Description

A kind of flexible anti-heat-barrier material of efficiently variable density and preparation method
Technical field
The present invention relates to the flexible anti-heat-barrier material field of a kind of variable density, particularly a kind of efficiently variable density flexibility is prevented heat insulation Material and preparation method.
Background technology
Deployable aerodynamic decelerator technology is following Multifucntional weapon and the realization deceleration decline of specific use aircraft Important way, it does technical guarantee with a kind of flexible heat insulation material, is in folded state, landing arrival planned orbit when launching Rear expansion, plays the dual purpose of aerodynamic decelerator and solar heat protection.It requires that heat insulation material heat sealability is good, resistance to elevated temperatures, anti-burning Performance is good, density is little in erosion.Meanwhile, the engine bottom thermal environment of the delivery of China's heavy type and a new generation's strategy and tactics guided missile is increasingly Harshness, the lighting to material it is also proposed higher requirement.And the flexible heat insulation material efficiency of China is low at present, density is big, The demand for development of material lighting can not be met.
At present, domestic flexible heat insulation material applied research level also rests on the silicone rubber painting developed the eighties in last century Covering fabric system, density reaches 1.3g/cm3, design of material is single, and temperature capacity is limited, the applied environment to high hot-fluid, only passes through The thickness improving solar heat protection part realizes, and makes solar heat protection moiety by weight improve, is unfavorable for loss of weight.
Summary of the invention
It is an object of the invention to overcome the above-mentioned deficiency of prior art, it is provided that the flexible anti-heat-barrier material of a kind of variable density, Improve the anti-heat-insulating efficiency of ablation of material, reduce density of material, it is achieved that density of material is effective sharp with anti-heat-insulating efficiency With.
The above-mentioned purpose of the present invention is achieved by following technical solution:
A kind of flexible anti-heat-barrier material of efficiently variable density, the anti-heat-barrier material of described flexibility uses n-layer anti-heat shield stacking structure Become；Wherein the anti-heat shield of n-layer includes solar heat protection part and insulating portion；Solar heat protection part includes the anti-heat shield of m layer；Insulating portion includes The anti-heat shield of n-m layer；Solar heat protection part stacks the most successively with insulating portion；The outermost external surface of solar heat protection part is heating Face, self-heating face ecto-entad, the density of every layer of anti-heat shield is sequentially reduced；N is positive integer；M is positive integer；n≥2；M >=1, And m ＜ n.
At above-mentioned a kind of flexible anti-heat-barrier material of efficiently variable density, the preparation method of the anti-heat shield of described every layer includes Following steps:
Step (one), the fibrous braid that thickness is 0.08～2mm is put into height be 0.4～3mm mould in；
Step (two), be 0 by mass percent～the foaming agent of 55%, mass percent be 0～5% chopped strand with Mass percent be 40～100% rubber matrix stir, pour in the mould of the good fibrous braid of lay；
Step (three), anti-heat shield curing molding.
At above-mentioned a kind of flexible anti-heat-barrier material of efficiently variable density, in described step (two), foaming agent includes that physics is sent out Infusion and CBA；Wherein, physical blowing agent is hollow phenolic aldehyde microsphere, hollow glass micro-ball, hollow carbosphere, cork powder Or one or more in pine benzene microsphere；CBA be azodicarbonamide, azodiisobutyronitrile, unifor, One or more in ammonium hydrogen carbonate or containing hydrogen silicone oil.
At above-mentioned a kind of flexible anti-heat-barrier material of efficiently variable density, in described step (two), rubber matrix is methyl silicon One in rubber, methyl vinyl silicone rubber, methyl phenyl silicone rubber, nitrile rubber or neoprene.
At above-mentioned a kind of flexible anti-heat-barrier material of efficiently variable density, the rubber matrix in every layer of anti-heat shield passes through physics Foaming agent or CBA or physics, chemical mixing foaming agent foam；Rubber matrix generates hole in foaming process, And self-heating face ecto-entad, in every layer of anti-heat shield, the void density of rubber matrix increases along with the addition of foaming agent and increases Greatly.
At above-mentioned a kind of flexible anti-heat-barrier material of efficiently variable density, in described step (two), chopped strand is glass fibers One or more in dimension, quartz fibre, high silica fiber, ceramic fibre or alumina fibre；Multiple chopped strand adds rubber Gum base body directly stirs mixing.
At above-mentioned a kind of flexible anti-heat-barrier material of efficiently variable density, in described step (), the fibre in fibrous braid Dimension material is glass fibre, quartz fibre, high silica fiber, ceramic fibre, alumina fibre, silicon carbide fibre, mullite fibre One or more in dimension, carbon fiber, phenolic fibre, polyimide fiber, aramid fiber or polysulphonamide fiber；Multiple fiber is compiled Fabric is by entering braiding again after being pooled capital in proportion by difference fiber；The volume content of every fibrid is 0～100%.
At above-mentioned a kind of flexible anti-heat-barrier material of efficiently variable density, in described step (three), when adding azo two formyl When amine CBA carries out curing molding, control temperature and be 190-200 DEG C；Add azodiisobutyronitrile CBA to carry out During curing molding, control temperature and be 60-70 DEG C；When addition unifor CBA carries out curing molding, control temperature Degree is for 110-120 DEG C；When addition ammonium hydrogen carbonate CBA carries out curing molding, controlling temperature is 30～50 DEG C；Addition contains When hydrogen silicone oil CBA carries out curing molding, control temperature is room temperature；Foamed time controls at 5-15min.
At above-mentioned a kind of flexible anti-heat-barrier material of efficiently variable density, without foaming agent during preparing anti-heat shield Time, anti-heat shield curing molding temperature is that room temperature is to 140 DEG C；Solidified forming time is 15min-7 days.
The present invention compared with prior art has the advantage that
(1) present invention provides a kind of flexible anti-heat-barrier material of efficiently variable density and preparation method, and described flexibility prevents heat insulation material Material uses n (n >=2) layer anti-heat shield stacking to constitute, including m (m >=1) layer solar heat protection part and n-m layer insulating portion；Self-heating face Ecto-entad, from solar heat protection part to insulating portion, density is sequentially reduced the change of material density gradient from outside to inside, optimizes configuration Density of material distributes, and ablation layer takes away heat by resin decomposition, and therefore corresponding anti-heat shield resin content is high, and density is big, The frothing percentage of insulating portion is the highest, more advantageously reduces thermal conductivity, and corresponding anti-heat shield density is low；
(2) in the present invention the anti-heat shield of each layer by the physical blowing of rubber matrix or chemical blowing or physics, chemistry The method of mixed foaming produces hole, and the density of hole is controlled by the addition of foaming agent, self-heating face ecto-entad, The addition of foaming agent is increasing；
(3) each layer of anti-heat shield that the present invention provides is separately formed；The preparation method of every is, by thickness be 0.08～ The fibrous braid of 2mm is put in the mould that height is 0.4～3mm, the chopped of foaming agent, 0～5wt% by 0～55wt% Fiber and 40～100wt% silicone rubber stir, pour curing molding in the mould of the good fibrous braid of lay into；By changing Become fabric thickness, mould height realizes different-thickness, the anti-heat shield of degree of flexibility makes, and different foaming agent add Amount realizes variable density, the interpolation of chopped strand, improves intensity and the bending resistance folding endurance of anti-heat shield；
(4) chopped strand of the present invention and fibrous braid, fibrous material is glass fibre, quartz fibre, high silicon Oxygen fiber, ceramic fibre, alumina fibre, silicon carbide fibre, mullite fiber, carbon fiber, phenolic fibre, polyimides are fine One or more in dimension, aramid fiber, polysulphonamide fiber；Multiple chopped strand addition silicone rubber directly stirs mixing；Many Plant fibrous braid by entering braiding after being pooled capital in proportion by difference fiber again；The volume content of every fibrid is 0～100%； Organic fiber at high temperature can walk heat by ablation carbonization zone, and inorfil at high temperature can walk heat by fusion zone, different fibers It is chosen as tackling the various ways that different heat-flux conditions provides；Inorfil heat-resist, the compliance of organic fiber is good, and two The shuffling of fibrid is advantageously implemented the balance of thermostability and flexibility；
(5) rubber of the present invention is methyl silicone rubber, methyl vinyl silicone rubber, methyl phenyl silicone rubber, butyronitrile One in rubber, neoprene, can realize selecting different rubbers according to cost requirement, heat resistant requirements, curing process requirement Glue；
(6) foaming agent of the present invention, physical blowing agent is that hollow phenolic aldehyde microsphere, hollow glass micro-ball, hollow carbon are micro- Ball, cork powder, pine benzene microsphere, CBA is azodicarbonamide, azodiisobutyronitrile, unifor, bicarbonate Ammonium, containing hydrogen silicone oil；Hot setting rubber preferably selects CBA, cold curing rubber preferably to select physical blowing agent；Added The amount upper limit controls, and the foaming capacity of physical blowing agent is limited, and the porosity of chemical blowing can reach the highest, by being used in mixed way reality The most more preferably effect.
Accompanying drawing explanation
Fig. 1 is that the present invention efficiently prevents heat insulation variable density flexibility solar heat protection schematic diagram.
Detailed description of the invention
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings:
The present invention provides a kind of variable density flexible anti-heat-barrier material, and material composition.The flexible anti-heat-barrier material of variable density Using multilamellar mode, self-heating face ecto-entad, from solar heat protection part to insulating portion, density is sequentially reduced.Upper strata heat insulation material Using ablative thermal protection, ablative thermal protection is safest anti-hot mode, can be prevented effectively from the Problem of Failure that material hot-spot is brought, When solar heat protection part surface temperature rises, decompose carbonization zone by ablator and walk heat, thus reduce the heat of inner layer transmission Amount, it is ensured that the temperature of internal layer.Ecto-entad reduces the density of heat insulation material successively, improves the porosity of heat insulation material, it is possible to decrease The thermal conductivity of material, improves the thermal ablation efficiency of material.Therefore, flexible anti-heat-barrier material outer layer acts primarily as ablative thermal protection, internal layer Act primarily as heat insulation effect, by controlling the porosity of every layer, make density be sequentially reduced, the weight of reasonably optimizing material and merit Energy.
The flexible anti-heat-barrier material of variable density can be used for the flexible heat insulation material of deployable aerodynamic decelerator, it is also possible to engine bottom The soft skirt of portion's solar heat protection, flexible heat shroud or other flexible anti-hot product, section.
Being illustrated in figure 1 the most anti-heat insulation variable density flexibility solar heat protection schematic diagram, as seen from the figure, a kind of efficiently variable density is flexible Anti-heat-barrier material, flexible anti-heat-barrier material uses n-layer anti-heat shield stacking to constitute；Wherein the anti-heat shield of n-layer includes solar heat protection part 2 With insulating portion 3；Solar heat protection part 2 includes the anti-heat shield of m layer；Insulating portion 3 includes the anti-heat shield of n-m layer；Solar heat protection part 2 with every Hot part 3 stacks the most successively；The outermost external surface of solar heat protection part 2 is heating surface 1, self-heating face 1 ecto-entad, often The density of the anti-heat shield of layer is sequentially reduced；N is positive integer；M is positive integer；n≥2；M >=1, and m ＜ n.
The preparation method of every layer of anti-heat shield comprises the steps:
Step (one), the fibrous braid that thickness is 0.08～2mm is put into height be 0.4～3mm mould in；Its In, the fibrous material in fibrous braid be glass fibre, quartz fibre, high silica fiber, ceramic fibre, alumina fibre, In silicon carbide fibre, mullite fiber, carbon fiber, phenolic fibre, polyimide fiber, aramid fiber, polysulphonamide fiber one Plant or multiple；Multiple fibrous braid is by entering braiding again after being pooled capital in proportion by difference fiber；The volume content of every fibrid It is 0～100%.
Step (two), be 0 by mass percent～the foaming agent of 55%, mass percent be 0～5% chopped strand with Mass percent be 40～100% rubber matrix stir, pour in the mould of the good fibrous braid of lay；
Wherein, foaming agent includes physical blowing agent and CBA；Wherein, physical blowing agent be hollow phenolic aldehyde microsphere, One or more in hollow glass micro-ball, hollow carbosphere, cork powder, pine benzene microsphere；CBA is azo two formyl One or more in amine, azodiisobutyronitrile, unifor, ammonium hydrogen carbonate, containing hydrogen silicone oil；
Rubber matrix is methyl silicone rubber, methyl vinyl silicone rubber, methyl phenyl silicone rubber, nitrile rubber, neoprene rubber One in glue；
Chopped strand be the one in glass fibre, quartz fibre, high silica fiber, ceramic fibre, alumina fibre or Multiple；Multiple chopped strand addition rubber matrix directly stirs mixing.
Rubber matrix in every layer of anti-heat shield can be sent out by physical blowing agent or CBA or physics, chemical mixing Infusion foams；Rubber matrix generates hole in foaming process；Self-heating face ecto-entad, rubber in every layer of anti-heat shield The void density of matrix increases along with the addition of foaming agent and increases.
Step (three), anti-heat shield curing molding；When adding azodicarbonamide CBA and carrying out curing molding, Control temperature and be 190-200 DEG C；When addition azodiisobutyronitrile CBA carries out curing molding, control temperature is 60-70 ℃；When addition unifor CBA carries out curing molding, control temperature and be 110-120 DEG C；Add ammonium hydrogen carbonate When CBA carries out curing molding, controlling temperature is 30～50 DEG C；Add containing hydrogen silicone oil CBA to be solidified into During type, control temperature is room temperature；Foamed time controls at 5-15min；
When preparing during anti-heat shield without foaming agent, anti-heat shield curing molding temperature is that room temperature is to 140 DEG C； Solidified forming time is 30min-7 days.
Embodiment 1:
Constitute including 3 layers of anti-heat shield stacking；Wherein solar heat protection part 2 includes that 1 layer of anti-heat shield, insulating portion 3 include 2 layers Anti-heat shield, i.e. n=3, m=1；
Prepared by the 1st layer of (outermost layer) anti-heat shield: by 50vol% glass fibre and 50vol% phenol that thickness is 0.08mm Aldehyde fiber blended fabric is put in the mould that height is 0.4mm, is then that 5% chopped quartz fibre is mixed into matter by mass percent Amount percentage ratio be 95% methyl phenyl silicone rubber stirs after, rubber mix liquid is poured into the mould completing fabric In, room temperature is curing molding after 5 days.
Prepared by the 2nd layer of anti-heat shield: knitted with 50vol% phenolic fibre shuffling by the 50vol% glass fibre that thickness is 1mm Thing is put in the mould that height is 2mm, uses physical blowing, is 5% hollow glass micro-ball, mass percent by mass percent Be 10% cork powder be mixed into mass percent be 85% methyl phenyl silicone rubber stirs after, pour rubber mix liquid into paving In the mould of good fabric, room temperature is curing molding after 6 days.
Prepared by the 3rd layer of anti-heat shield: knitted with 50vol% phenolic fibre shuffling by the 50vol% glass fibre that thickness is 2mm Thing is put in the mould that height is 3mm；Use physical blowing, be 5% hollow glass micro-ball, mass percent by mass percent Be 10% cork powder, mass percent be that to be mixed into mass percent be to stir in 75% methyl phenyl silicone rubber to 10% hollow carbosphere After mixing uniformly, being poured into by rubber mix liquid in the mould completing fabric, room temperature is curing molding after 6 days.
The flexible anti-heat-barrier material of composition that 3 layers of anti-heat shield are superimposed together variable density, the 1st layer is solar heat protection part, the 2nd, 3 Layer is insulating portion, and the 1st layer of density is 1.5g/cm3, the 2nd layer of density is 1.2g/cm3, the 3rd layer of density is 1.0g/cm3, 400kW/m2Heat-flux conditions under ablation 60s, back of the body temperature is less than 80 DEG C.
Embodiment 2:
Constitute including 3 layers of anti-heat shield stacking；Including 1 layer of solar heat protection part 2 and 2 layers of insulating portion 3, i.e. n=3, m= 1；
Prepared by the 1st layer of (outermost layer) anti-heat shield: by 50vol% carbon fiber and 50vol% aramid fiber that thickness is 0.08mm Fiber blended fabric is put in the mould that height is 0.4mm, and 100wt% methyl silicon rubber is poured into the mould completing fabric In, room temperature is curing molding after 7 days.
Prepared by the 2nd layer of anti-heat shield: the 100vol% glass fiber cloth that thickness is 0.2mm is put into height is 1mm In mould；Use physical blowing, by mass percent be 5% hollow carbosphere, mass percent be that 10% cork powder is mixed into matter Amount percentage ratio be 85% methyl silicone rubber stirs after, rubber mix liquid is poured in the mould completing fabric, room Temperature is curing molding after 6 days.
Prepared by the 3rd layer of anti-heat shield: by 30vol% high silica fiber and 70vol% polyimide fiber that thickness is 1mm Blended fabric is put in the mould that height is 2mm；Use physical blowing, be 5% short glass fiber, quality by mass percent Percentage ratio be 50% hollow phenolic aldehyde microsphere be mixed into mass percent be 40% methyl vinyl silicone rubber stirs after, by rubber Glue mixed liquor is poured in the mould completing fabric, and room temperature is curing molding after 5 days.
The flexible anti-heat-barrier material of composition that 3 layers of anti-heat shield are superimposed together variable density, the 1st layer is solar heat protection part, the 2nd, 3 Layer is insulating portion, to meet heat-flux conditions and the requirement of back of the body temperature.1st layer of density is 1.4g/cm3, the 2nd layer of density is 1.2g/ cm3, the 3rd layer of density is 0.8g/cm3, at 300kW/m2Heat-flux conditions under ablation 50s, back of the body temperature is less than 150 DEG C.
Embodiment 3:
Constitute including 4 layers of anti-heat shield stacking；Including 2 layers of solar heat protection part 2 and 2 layers of insulating portion 3, i.e. n=4, m= 2；
Prepared by the 1st layer of (outermost layer) anti-heat shield: by 50vol% alumina fibre and 50vol% virtue that thickness is 0.2mm Sulfone synthetic fibre fiber blended fabric is put in the mould that height is 1mm；It is 2% chopped ceramic fibre, percent mass by mass percent Than be 3% short glass fiber be mixed into mass percent be 95% neoprene stirs after, rubber mix liquid is poured into Complete in the mould of fabric, 110 DEG C of insulation 20min curing moldings.
Prepared by the 2nd layer of anti-heat shield: mixed with 50vol% phenolic fibre by the 50vol% silicon carbide fibre that thickness is 0.2mm Fabric is put in the mould that height is 1mm；Use chemical blowing, be 5% ammonium hydrogen carbonate by mass percent, be mixed into quality hundred Proportion by subtraction be 90% neoprene stirs after, rubber mix liquid is poured in the mould completing fabric, 40 DEG C of foaming Insulation 10min, 140 DEG C of insulation 15min curing moldings.
Prepared by the 3rd layer of anti-heat shield: mixed with 50vol% phenolic fibre by the 50vol% mullite fiber that thickness is 0.2mm Fabric is put in the mould that height is 1mm；Use physics and chemical mixing foam pattern, be 10% azo by mass percent Bis-isobutyronitrile, mass percent be 15% pine benzene microsphere, be mixed into mass percent be 75% neoprene stirs after, will Rubber mix liquid is poured in the mould completing fabric, 70 DEG C of foaming 12min, and 100 DEG C of insulation 30min curing moldings.
Prepared by the 4th layer of anti-heat shield: by 50vol% ceramic fibre and 50vol% phenolic fibre shuffling that thickness is 0.2mm Fabric is put in the mould that height is 1mm；Use chemical blowing, be 3% alumina fibre, mass percent by mass percent Be 15% toluene sulfonyl hydrazide, mass percent be 25% containing hydrogen silicone oil, being mixed into mass percent is in 57% methyl silicone rubber After stirring, rubber mix liquid is poured in the mould completing fabric, after room temperature places 15min, then be warming up to 120 DEG C Foaming 10min, 120 DEG C keep 20min curing molding.
The flexible anti-heat-barrier material of composition that 4 layers of anti-heat shield are superimposed together variable density, the 1st, 2 layers is solar heat protection part, the 3,4 layers is insulating portion, to meet heat-flux conditions and the requirement of back of the body temperature.1st layer of density is 1.6g/cm3, the 2nd layer of density is 1.4g/cm3, the 3rd layer of density is 1.1g/cm3, the 4th layer of density is 0.7g/cm3, at 400kW/m2Heat-flux conditions under ablation 70s, back of the body temperature is less than 100 DEG C.
The content not being described in detail in description of the invention belongs to the known technology of those skilled in the art.

Claims (9)

1. the flexible anti-heat-barrier material of efficient variable density, it is characterised in that: the anti-heat-barrier material of described flexibility uses n-layer to prevent heat insulation Sheet stacking is constituted；Wherein the anti-heat shield of n-layer includes solar heat protection part (2) and insulating portion (3)；Solar heat protection part (2) include m layer anti-every Backing；Insulating portion (3) includes the anti-heat shield of n-m layer；Solar heat protection part (2) stacks the most successively with insulating portion (3)；Anti- The outermost external surface of heat part (2) is heating surface (1), and self-heating face (1) ecto-entad, the density of every layer of anti-heat shield is successively Reduce；N is positive integer；M is positive integer；n≥2；M >=1, and m ＜ n.
The flexible anti-heat-barrier material of the efficient variable density of one the most according to claim 1, it is characterised in that: described every layer is prevented The preparation method of heat shield comprises the steps:
Step (one), the fibrous braid that thickness is 0.08～2mm is put into height be 0.4～3mm mould in；
Step (two), it is 0 by mass percent～the foaming agent of 55%, mass percent are 0～the chopped strand of 5% and quality Percentage ratio be 40～100% rubber matrix stir, pour in the mould of the good fibrous braid of lay；
Step (three), anti-heat shield curing molding.
The flexible anti-heat-barrier material of the efficient variable density of one the most according to claim 2, it is characterised in that: described step (two) In, foaming agent includes physical blowing agent and CBA；Wherein, physical blowing agent is that hollow phenolic aldehyde microsphere, hollow glass are micro- One or more in ball, hollow carbosphere, cork powder or pine benzene microsphere；CBA is azodicarbonamide, azo two One or more in isopropyl cyanide, unifor, ammonium hydrogen carbonate or containing hydrogen silicone oil.
The flexible anti-heat-barrier material of the efficient variable density of one the most according to claim 2, it is characterised in that: described step (two) In, rubber matrix is in methyl silicone rubber, methyl vinyl silicone rubber, methyl phenyl silicone rubber, nitrile rubber or neoprene One.
5. according to a kind of flexible anti-heat-barrier material of efficiently variable density one of claim 4 Suo Shu, it is characterised in that: every layer anti-every Rubber matrix in backing is foamed by physical blowing agent or CBA or physics, chemical mixing foaming agent；Rubber Matrix generates hole, and self-heating face ecto-entad in foaming process, the void density of rubber matrix in every layer of anti-heat shield Increase along with the addition of foaming agent and increase.
The flexible anti-heat-barrier material of the efficient variable density of one the most according to claim 2, it is characterised in that: described step (two) In, chopped strand is one or more in glass fibre, quartz fibre, high silica fiber, ceramic fibre or alumina fibre； Multiple chopped strand addition rubber matrix directly stirs mixing.
The flexible anti-heat-barrier material of the efficient variable density of one the most according to claim 2, it is characterised in that: described step () In, the fibrous material in fibrous braid be glass fibre, quartz fibre, high silica fiber, ceramic fibre, alumina fibre, In silicon carbide fibre, mullite fiber, carbon fiber, phenolic fibre, polyimide fiber, aramid fiber or polysulphonamide fiber one Plant or multiple；Multiple fibrous braid is by entering braiding again after being pooled capital in proportion by difference fiber；The volume content of every fibrid It is 0～100%.
8. according to a kind of flexible anti-heat-barrier material of efficiently variable density described in Claims 2 or 3, it is characterised in that: described step (3) in, when adding azodicarbonamide CBA and carrying out curing molding, control temperature and be 190-200 DEG C；Add even When nitrogen bis-isobutyronitrile CBA carries out curing molding, control temperature and be 60-70 DEG C；Add unifor chemical blowing When agent carries out curing molding, control temperature and be 110-120 DEG C；When addition ammonium hydrogen carbonate CBA carries out curing molding, control Temperature processed is 30～50 DEG C；When addition containing hydrogen silicone oil CBA carries out curing molding, control temperature is room temperature；Foamed time Control at 5-15min.
The flexible anti-heat-barrier material of the efficient variable density of one the most according to claim 2, it is characterised in that: when preparation is anti-heat insulation Time during sheet without foaming agent, anti-heat shield curing molding temperature is that room temperature is to 140 DEG C；Solidified forming time is 15min- 7 days.
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CN109268625A (en) * 2018-11-23 2019-01-25 中国运载火箭技术研究院 A kind of low temperature lightweight low heat conductivity composite adiabatic structure
CN109679346A (en) * 2018-12-27 2019-04-26 四川川环科技股份有限公司 Prepare resistance to comburant composition, using, resistance to comburant, preparation method and oil transportation rubber tube
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CN110551425A (en) * 2019-09-17 2019-12-10 河南方元机电有限公司 New energy automobile wire harness protective sleeve and preparation method thereof
CN112208161A (en) * 2020-09-07 2021-01-12 蒙娜丽莎集团股份有限公司 Layered fibrous body toughened resin-based composite material and preparation method thereof
CN113845748A (en) * 2021-09-30 2021-12-28 航天特种材料及工艺技术研究所 Lightweight ablation-resistant anti-heat insulation material and preparation method thereof
CN114484153A (en) * 2022-01-22 2022-05-13 巩义市泛锐熠辉复合材料有限公司 Plastic nano heat insulation plate and preparation method thereof
CN114484153B (en) * 2022-01-22 2023-11-03 巩义市泛锐熠辉复合材料有限公司 Shapeable nano heat insulation plate and preparation method thereof

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