CN106009700B - A kind of heat-resisting anti-ablation rubber composite material and preparation method thereof with temperature-responsive self-expanding characteristic - Google Patents
A kind of heat-resisting anti-ablation rubber composite material and preparation method thereof with temperature-responsive self-expanding characteristic Download PDFInfo
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
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Abstract
The invention discloses a kind of rubber composite materials, it includes the component of following parts by weight: 80 parts~120 parts rubber, 20 parts~35 parts silica, 10 parts~30 parts metal oxides, 2 parts~30 parts foam microspheres, 0.8 part~1.5 parts crosslinking agents.Rubber composite material of the invention, by using specific composition and proportion, assign the self-expanding characteristic that composite material has temperature-responsive, the initial expansion temperature of material, expansion rate, the expansion characteristics such as expansion multiplying power carry out control adjustment with can be convenient, the material after its expansion is still able to maintain excellent ablation resistance simultaneously, some special applications requirements can be met, the anti-heat seal of automatic expansion and the ablation resistance requirement of material under specific environment can be achieved, such as fire environment or occur heat transfer pathway self-closed during significant temperature rise, isolation heat transfer simultaneously can be effective against further external ablation, to play a protective role to particular organization.
Description
Technical field
The present invention relates to a kind of rubber composite materials of resistance to ablation and preparation method thereof with temperature-responsive self-expanding characteristic.
Background technique
Flexible heat resistant anti-ablation material has more application and is play in all kinds of engineerings, thermal protection and fire proof construction
Key player, but its function is often single, and some special and key position thermal protection must also often meet the function in design
It can property requirement.Temperature-responsive expanding material then refers to that material volume changes when environment temperature changes a lot, so as to
To realize certain function, it is divided into repeatable thermal expansion material, and swell increment is typically small and non-repeatability thermally expands material
Material, but its swell increment is generally large, if the latter combined with flexible anti-ablation material, can prepare a kind of completely new tool
There is the heat-resisting anti-ablation rubber composite material of temperature-responsive self-expanding characteristic, imparting rubber composite material has oneself of temperature-responsive
Expansion characteristics, while the material after its expansion is still able to maintain excellent ablation resistance, can meet some special applications
It is required that, it can be achieved that the anti-heat seal of the automatic expansion of material and ablation resistance requirement under specific environment, such as naval vessel etc. are similar narrow
The fire damping of small complex space, the thermal protection etc. of particular organization will be hot during fire environment or appearance significant temperature rise
Transmission channels self-closed completely cuts off heat transfer and is effective against further external ablation, to block burning or to specific
Mechanism plays a protective role.
However, existing material is typically only capable to meet the requirement in one side face, there are no to meet at present simultaneously
State the rubber packing material of temperature-responsive self-expanding characteristic and heat-resisting anti-ablation aspect performance requirement.And, it is generally the case that material
Density decline after material expansion, will lead to the significant decrease of material ablation resistance, this, which undoubtedly increases acquisition, to expire simultaneously
The difficulty of the material of the above-mentioned two aspects performance requirement of foot.
Summary of the invention
The purpose of the present invention is to provide a kind of rubber composite material with temperature-responsive self-expanding characteristic and resistance to ablation.
A kind of rubber composite material provided by the invention, it includes the component of following parts by weight: 80 parts~120 portions rubbers
Glue, 20 parts~35 parts silica, 10 parts~30 parts metal oxides, 2 parts~30 parts foam microspheres, 0.8 part~1.5 parts crosslinkings
Agent.
Further, it is to be composed of the following parts by weight: 80 parts~120 parts rubber, 20 parts~35 parts dioxies
SiClx, 10 parts~30 parts metal oxides, 2 parts~30 parts foam microspheres, 0.8 part~1.5 parts crosslinking agents.
Further, the partial size of the silica is 5nm~100nm；Preferably, the partial size of the silica is
10nm~40nm.
Further, the metal oxide is selected from Fe3O4、M12O3、M2O、M3O2In any one or two kinds with
On；Wherein, M1 Fe, Al, Co or Ni, M2 Mg, Ca, Cu or Ba, M3 Sn, Ti, Pb or Zr.
Further, the metal oxide is to be composed of the following parts by weight: 1 part~5 parts Fe3O4, 3 parts
~15 parts of M12O3, 4 parts~10 parts of M2O, 0 part~15 parts M3O2；Wherein, M1 Fe, Al, Co or Ni, M2 Mg, Ca, Cu or Ba,
M3 is Sn, Ti, Pb or Zr.
Further, the starting blowing temperature of the foam microspheres is 80 DEG C~220 DEG C；Preferably, the foam microspheres
Starting blowing temperature be 110 DEG C~150 DEG C.
Further, the rubber is selected from silicon rubber, fluorubber, natural rubber, butadiene-styrene rubber, nitrile rubber, suitable fourth
Rubber, isoprene rubber, EP rubbers, in neoprene any one or it is two or more；The crosslinking agent is selected from peroxidating
Dibenzoyl, cumyl peroxide, di-isopropylbenzene hydroperoxide, -2,5 di-t-butyl hexane peroxide of 2,5- dimethyl, two
In tert-butyl peroxide any one or it is two or more.
Wherein, the silicon rubber is selected from dimethyl silicone rubber, methyl vinyl silicone rubber, methyl phenyl vinyl silicon rubber
In glue any one or it is two or more.
The present invention also provides a kind of method for preparing above-mentioned rubber composite material, it the following steps are included:
A, rubber and silica are taken, is mixed, metal oxide is added, is mixed, crosslinking agent is added, is mixed, foaming is added
Microballoon mixes, obtains mixed material；
B, be aged mixed material obtained by step a 24 hours naturally at room temperature or more；
C, by the material after step b ageing, under the conditions of 100 DEG C, 8MPa~12MPa, hot-press vulcanization 15min~25min
Afterwards, cooling, obtain hot-press vulcanization moulded products；
D, hot-press vulcanization moulded products obtained by step c are placed at room temperature for 12 hours or more.
The present invention also provides a kind of compositions for improving ablation resistance, it is grouped by the group of following parts by weight
At: 10 parts~30 parts metal oxides, 2 parts~30 parts foam microspheres.
Further, the metal oxide is selected from Fe3O4、M12O3、M2O、M3O2In any one or two kinds with
On；Wherein, M1 Fe, Al, Co or Ni, M2 Mg, Ca, Cu or Ba, M3 Sn, Ti, Pb or Zr.
Further, the metal oxide is to be composed of the following parts by weight: 1 part~5 parts Fe3O4, 3 parts
~15 parts of M12O3, 4 parts~10 parts of M2O, 0 part~15 parts M3O2；Wherein, M1 Fe, Al, Co or Ni, M2 Mg, Ca, Cu or Ba,
M3 is Sn, Ti, Pb or Zr.
Further, the starting blowing temperature of the foam microspheres is 80 DEG C~220 DEG C；Preferably, the foam microspheres
Starting blowing temperature be 110 DEG C~150 DEG C.
The present invention also provides above-mentioned compositions to prepare the application in above-mentioned rubber composite material.
Rubber composite material of the invention assigns composite material and rings with temperature by using specific composition and proportion
The self-expanding characteristic answered, the expansion characteristics such as initial expansion temperature, expansion rate, expansion multiplying power of material are controlled in which can be convenient
System adjustment can meet some special applications requirements, while the material after its expansion is still able to maintain excellent ablation resistance
Can, it can be achieved that under specific environment the automatic expansion of material it is anti-heat seal and ablation resistance requirement, such as fire environment or appearance
By heat transfer pathway self-closed during significant temperature rise, completely cuts off heat transfer and further outside can be effective against and burn
Erosion, to play a protective role to particular organization.Meanwhile rubber composite material performance designability of the invention is good, storage is steady
It is fixed, a variety of application demands can be met, had a extensive future.
Foam microspheres are one kind by the thermoplastic resin (homopolymerization of 1,1- dichloroethylene system, acrylic, acrylic monomer
Object or copolymer etc.) shell and Nei Bao low boiling point organic solvent (iso-butane, normal butane, pentane, isopentane, petroleum ether etc.) core material
The microsphere particle of composition.According to the difference of application purpose, microsphere diameter is differed from 5~100 μm.As the temperature rises, core
Material rapidly vaporizes, and generates high internal pressure, meanwhile, sheathing material is by thermal softening, so that entire microballoon is swollen under the promotion of internal pressure
It is expanded into big abscess.Generally, the diameter of microballoon will increase original several times, and volume will increase to 10 times even 100 times.It is this
Expended microsphere has metastable shape, without retracting because of cooling.
Obviously, above content according to the present invention is not being departed from according to the ordinary technical knowledge and customary means of this field
Under the premise of the above-mentioned basic fundamental thought of the present invention, the modification, replacement or change of other diversified forms can also be made.
The specific embodiment of form by the following examples remakes further specifically above content of the invention
It is bright.But the range that this should not be interpreted as to the above-mentioned theme of the present invention is only limitted to example below.It is all to be based on above content of the present invention
The technology realized all belongs to the scope of the present invention.
Detailed description of the invention
Fig. 1 is that 1 gained rubber composite material of embodiment of the present invention expansion multiplying power at 120 DEG C changes with time figure.
Fig. 2 is that 2 gained rubber composite material of embodiment of the present invention expansion multiplying power at 120 DEG C changes with time figure.
Fig. 3 is that 3 gained rubber composite material of embodiment of the present invention expansion multiplying power at 120 DEG C changes with time figure.
Fig. 4 is that 1 gained rubber composite material of embodiment of the present invention expansion multiplying power at 130 DEG C changes with time figure.
Fig. 5 is that 4 gained rubber composite material of embodiment of the present invention expansion multiplying power at 140 DEG C changes with time figure.
Fig. 6 is that 5 gained rubber composite material of embodiment of the present invention expansion multiplying power at 140 DEG C changes with time figure.
Fig. 7 is that 4 gained rubber composite material of embodiment of the present invention expansion multiplying power at 150 DEG C changes with time figure.
Fig. 8 is that comparative example 1 does not add the rubber composite material change of expansion multiplying power at any time at 120 DEG C obtained by foam microspheres
Change figure.
Fig. 9 is the microscopic appearance figure of 1 gained rubber composite material of embodiment of the present invention expansion front and back.
Figure 10 is the thickness change figure of 1 gained rubber composite material of embodiment of the present invention expansion front and back.
Specific embodiment
Raw material, equipment used in the specific embodiment of the invention are known product, are obtained by purchase commercial product.
For example, foam microspheres can be obtained by purchase commercial product, it can also by literature method or in detail below
Preparation method obtains:
1, the preparation of low-temp foaming microballoon (LTE)
(1), it prepares aqueous dispersion liquid: sequentially adding 1.05g sodium hydroxide in 27.5g deionized water, 3.00g six is hydrated
Magnesium chloride, 0.5g lauryl sodium sulfate aqueous solution (1wt%), are vigorously stirred half an hour, form stable suspension protection liquid；
(2), prepare oil phase dispersion liquid: into beaker addition 6.20g acrylonitrile (AN), 3.10g methyl acrylate (MA),
1.03g vinyl acetate (VAc), 2.53g foaming agent (n-hexane), 0.19g initiator (azodiisobutyronitrile, AIBN),
0.045g crosslinking agent (ethylene glycol dimethacrylate, EGDMA)；
(3) above-mentioned oil is added to water phase, be vigorously stirred until obtaining stable suspension, sealing, 63 DEG C of reaction 20h drop
Temperature, discharging are washed with dilute hydrochloric acid and remove surface magnesium hydroxide, are placed in drying in 55 DEG C of baking ovens, are obtained faint yellow or white production
Product, as low-temp foaming microballoon (LTE), starting blowing temperature is about 110~125 DEG C.
2, the preparation of medium temperature foam microspheres (MTE)
(1) aqueous dispersion liquid is prepared: by 275.0g deionized water, 5.0g lauryl sodium sulfate (1wt%), 3.0g nanometers
Silica, the mixing of 15.0g sodium chloride, high-speed stirred is uniform, water phase needed for obtaining suspension polymerisation；
(2) prepare oil phase dispersion liquid: into beaker addition 63.0g acrylonitrile (AN), 21.g methacrylic acid (MAA),
21.0g methyl methacrylate, 41.0g foaming agent (isopentane), 1.10g initiator (benzoyl peroxide, BPO), 0.35g second
Diol dimethacrylate (EGDMA)；
(3) above-mentioned oil is added to water phase, is vigorously stirred up to obtaining stable suspension, seals, tied after 69 DEG C of reaction 19h
Shu Fanying, product is washed, after filtering, is put into 55 DEG C of dryings in baking oven, finally obtains white or light yellow product, as in
Warm foam microspheres (MTE), starting blowing temperature is about 130~150 DEG C.
Embodiment 1 prepares rubber composite material of the invention
1, it is kneaded
According to each component and weight proportion specified in table 1, raw material is taken；
Room temperature leads to cooling water double roll mill, measures in mixing process and ensures that temperature of charge is lower than 60 DEG C, mixing time
It amounts to and is not less than 20min, steps are as follows:
(1), double roller gap is adjusted, rubber (methyl vinyl silicone rubber: weight average molecular weight 45~700,000, vinyl is added
Content is 0.15wt%~0.17wt%) it is kneaded, it is careful to be repeatedly gradually slowly added to silica (partial size is 20nm~30nm),
Range estimation is finished to addition to continue to be kneaded 1min after mixing；
(2), metal oxide is added, until addition finishes range estimation after mixing, continues to be kneaded 1min, generally add from raw material
Enter to next step and feeds, incorporation time 5min；
(3), crosslinking agent (dibenzoyl peroxide, BPO) is added, is kneaded 5min.
(4), double roller gap is tuned up, is added foam microspheres (low-temp foaming microballoon, LTE), until addition finishes range estimation mixing
Continue to be kneaded 1min, natural cooling after blanking after even.
2, be aged one: natural digestion time is not less than for 24 hours the material after compounding procedure at room temperature.
3, hot-press vulcanization forms
(1), (alcohol washes are generally used, part spot is removed using toothpaste) after mold carefully cleans；
(2), sizing material is cold-pressed and is cut into after item and uniformly spreads into die cavity, and strict control material total amount is no more than with flash amount
3% is advisable, and to ensure the dimensional stability of shaped article, must pay attention to the uniformity of paving, to ensure uniform mold filling；
(3), mold clamping hot-press vulcanization, curing temperature are controlled at 100 DEG C, pressure 10MPa, time 20min；
(4), cooling 5min under 10MPa cold press.
4, be aged two: heat cure shaping product cooled to room temperature, which is placed, is not less than 12h, and it is multiple to obtain rubber of the invention
Condensation material.
Embodiment 2 prepares rubber composite material of the invention
According to the method that each component and the weight proportion dosages of foam microspheres (reduce) specified in table 1 repeat embodiment 1,
Obtain rubber composite material of the invention.
Embodiment 3 prepares rubber composite material of the invention
According to the method that each component and the weight proportion dosages of foam microspheres (increase) specified in table 1 repeat embodiment 1,
Obtain rubber composite material of the invention.
Embodiment 4 prepares rubber composite material of the invention
According to the method that each component and weight proportion specified in table 1 repeat embodiment 1, and with medium temperature foam microspheres
(MTE) the low-temp foaming microballoon (LTE) in alternative embodiment 1, obtains rubber composite material of the invention.
Embodiment 5 prepares rubber composite material of the invention
According to the method that each component and the weight proportion dosages of foam microspheres (reduce) specified in table 1 repeat embodiment 1,
And with the low-temp foaming microballoon (LTE) in medium temperature foam microspheres (MTE) alternative embodiment 1, rubber composite wood of the invention is obtained
Material.
Embodiment 6 prepares rubber composite material of the invention
According to the method that each component and weight proportion specified in table 1 repeat embodiment 1, it is compound to obtain rubber of the invention
Material.
Embodiment 7 prepares rubber composite material of the invention
According in table 1 specify each component and weight proportion repeat embodiment 1 method, and with dimethyl silicone rubber (or
Methyl phenyl vinyl silicone rubber) methyl vinyl silicone rubber in alternative embodiment 1, obtain rubber composite wood of the invention
Material.
Embodiment 8 prepares rubber composite material of the invention
According to the method that each component and weight proportion specified in table 1 repeat embodiment 1, and with fluorubber (or butylbenzene rubber
Glue or nitrile rubber) methyl vinyl silicone rubber in alternative embodiment 1, obtain rubber composite material of the invention.
Comparative example 1 does not add foam microspheres
According to the method that each component and weight proportion specified in table 2 repeat embodiment 1, the rubber for obtaining comparative example is compound
Material.
Comparative example 2 does not add foam microspheres
According to the method that each component and weight proportion specified in table 2 repeat embodiment 1, the rubber for obtaining comparative example is compound
Material.
Comparative example 3 does not add metal oxide
According to the method that each component and weight proportion specified in table 2 repeat embodiment 1, the rubber for obtaining comparative example is compound
Material.
Table 1, the embodiment of the present invention 1~8 specified each component and weight proportion
Table 2, comparative example 1~3 specified each component and weight proportion
Illustrate beneficial effects of the present invention below by way of test example:
Test example 1, swell
1.1, expansion multiplying power is tested
Measure expansion multiplying power by the following method: at a fixed temperature, every 10s tests the thickness of a sample, and remembers
Record is got off.
The calculation formula of expansion multiplying power: (dt-d0)/d0, wherein dtFor the corresponding thickness of t moment sample, d0For the first of sample
Beginning thickness.
Embodiment 1, embodiment 2,3 gained rubber composite material of embodiment carry out foaming and intumescing at 120 DEG C respectively, implement
1 gained rubber composite material of example carries out foaming and intumescing at 130 DEG C, and result is respectively such as FIG. 1 to FIG. 4.
Embodiment 4,5 gained rubber composite material of embodiment carry out foaming and intumescing, 4 gained of embodiment at 140 DEG C respectively
Rubber composite material carries out foaming and intumescing at 150 DEG C, and result is respectively such as Fig. 5~Fig. 7.
Comparative example 1 does not add rubber composite material obtained by foam microspheres and carries out foaming and intumescing at 120 DEG C, as a result sees Fig. 8.
The above results show rubber composite material of the invention, have temperature-responsive self-expanding characteristic (to different temperature
Condition, material can occur different expansion behaviors and be responded), initial expansion temperature, expansion rate, expansion multiplying power of material etc.
Expansion characteristics easily can be controlled and be adjusted, and the conduction of heat can be effectively prevented or slow down, and played sealing and protected
The effect of protection unit especially critical component meets some particular/special requirements of practical application.
1.2, the microscopic appearance of expansion front and back
Sem test (SEM): it is quenched the microcosmic shape of section using Japan Electronics JSM-7500 scanning electron microscopic observation sample
Looks, acceleration voltage 5kV.
1 gained rubber composite material of the embodiment of the present invention, the microscopic appearance before expansion, and (120 are placed it in after expanding
180s obtains sample expanded at DEG C) microscopic appearance, see Fig. 9；The result shows that after rubber composite material expansion of the invention, bubble
Hole obviously becomes larger, and it is evenly dispersed in the base, be highly suitable as sealing material.
1.3, the thickness change test of expansion front and back
At room temperature, the thickness change of a silicon rubber expansion both front and back batten is monthly tested, and is recorded.
1 gained rubber composite material of the embodiment of the present invention (places it in 180s at 120 DEG C to obtain before expansion and after expansion
To sample expanded) thickness change test result see Figure 10, the results showed that, either expand before, or expansion after, rubber of the present invention
The thickness of glue composite material can keep stable, it is not easy to destruction of edition type occur, have good dimensional stability.
Test example 2, ablation resistance experiment
Embodiment 1, comparative example 1, comparative example 2 and comparative example 3 carry out ablation property reality after expanding 180s at 120 DEG C respectively
It tests；Embodiment 4 carries out ablation property experiment after expanding 180s at 140 DEG C.
Ablation property experiment:
Measure linear ablative rate respectively by the following method, to evaluate the ablation resistance of material, the numerical value of linear ablative rate is got over
It is small, illustrate that the ablation resistance of material is better.
Linear ablative rate test condition: oxy-acetylene flame stream vertically being rushed and is burnt on sample, and ablation temperature is 1500 DEG C, nozzle
With sample interval 2cm, ablation time 30s.
Calculation formula is as follows: Rd=Δ d/t=(d1-d2)/t
Wherein, Rd is sample linear ablative rate, mm/s；D1 is sample original thickness, mm；D2 is the thickness after sample ablation,
mm；T is ablation time, s.
Test result is shown in Table 3.
The test result of table 3, linear ablative rate
The above results show the present invention being used cooperatively by foam microspheres and metal oxide, so that rubber composite wood
Linear ablative rate after material expansion can reach very low numerical value, far below the linear ablative rate of the material of exclusive use, greatly promote
The ablation resistance of expansion silicon rubber composite material can satisfy specific environment heat seal anti-to the automatic expansion of material and resistance to
The requirements at the higher level of ablation property meet fire environment or appearance for example, can completely cut off heat transfer and be effective against external ablation
Protection requirement of the significant elevated temp to particular elements.
In conclusion rubber composite material of the invention assigns composite material tool by using specific composition and proportion
There is the self-expanding characteristic of temperature-responsive, the expansion characteristics such as initial expansion temperature, expansion rate, expansion multiplying power of material can be convenient
Ground carries out control adjustment, can meet the requirement of some special applications, at the same material after its expansion be still able to maintain it is excellent
Ablation resistance, it can be achieved that under specific environment the automatic expansion of material it is anti-heat seal and ablation resistance requirement, such as fire ring
There is significant temperature rise in the process for heat transfer pathway self-closed in border, and completely cutting off heat transfer can simultaneously be effective against further
External ablation, to play a protective role to particular organization.Meanwhile rubber composite material performance designability of the invention is good,
Stable storing can meet a variety of application demands, have a extensive future.
Claims (10)
1. a kind of rubber composite material, it is characterised in that: it includes the component of following parts by weight: 80 parts~120 parts rubber, 20
Part~35 parts of silica, 18 parts of metal oxides, 9 parts of foam microspheres, 0.8 part~1.5 parts crosslinking agents；The metal oxidation
Object is to be composed of the following parts by weight: 3 parts of Fe3O4, 10 parts of M12O3, 5 parts of M2O；Wherein, M1 Fe, M2 Mg.
2. rubber composite material according to claim 1, it is characterised in that: it is grouped by the group of following parts by weight
At: 80 parts~120 parts rubber, 20 parts~35 parts silica, 18 parts of metal oxides, 9 parts of foam microspheres, 0.8 part~1.5 parts
Crosslinking agent；The metal oxide is to be composed of the following parts by weight: 3 parts of Fe3O4, 10 parts of M12O3, 5 parts of M2O；Its
In, M1 Fe, M2 Mg.
3. rubber composite material according to claim 1 or 2, it is characterised in that: the partial size of the silica be 5nm~
100nm。
4. rubber composite material according to claim 3, it is characterised in that: the partial size of the silica be 10nm~
40nm。
5. rubber composite material according to claim 1 or 2, it is characterised in that: the starting of the foam microspheres is foamed warm
Degree is 80 DEG C~220 DEG C.
6. rubber composite material according to claim 5, it is characterised in that: the starting blowing temperature of the foam microspheres is
110 DEG C~150 DEG C.
7. rubber composite material according to claim 1 or 2, it is characterised in that: the rubber is selected from silicon rubber, fluorine rubber
Glue, natural rubber, butadiene-styrene rubber, nitrile rubber, butadiene rubber, isoprene rubber, EP rubbers, any one in neoprene
Or it is two or more；The crosslinking agent is selected from dibenzoyl peroxide, cumyl peroxide, di-isopropylbenzene hydroperoxide, two
In tert-butyl peroxide any one or it is two or more.
8. a kind of method for preparing rubber composite material described in claim 1~7 any one, it is characterised in that: it include with
Lower step:
A, rubber and silica are taken, is mixed, metal oxide is added, is mixed, crosslinking agent is added, is mixed, foam microspheres are added,
It mixes, obtains mixed material；
B, be aged mixed material obtained by step a 24 hours naturally at room temperature or more；
C, cold after hot-press vulcanization 15min~25min under the conditions of 100 DEG C, 8MPa~12MPa by the material after step b ageing
But, hot-press vulcanization moulded products are obtained；
D, hot-press vulcanization moulded products obtained by step c are placed at room temperature for 12 hours or more.
9. a kind of composition for improving ablation resistance, it is characterised in that: it is to be composed of the following parts by weight: 18 parts
Metal oxide, 9 parts of foam microspheres；The metal oxide is to be composed of the following parts by weight: 3 parts of Fe3O4、10
Part M12O3, 5 parts of M2O；Wherein, M1 Fe, M2 Mg.
10. application of the composition described in claim 9 in the rubber composite material described in preparation claim 1~7 any one.
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| CN106589622B (en) * | 2016-12-09 | 2019-06-21 | 湖北航天化学技术研究所 | A kind of resistance to ablation rubber-type heat insulation layer and preparation method thereof |
| CN109021571A (en) * | 2018-06-12 | 2018-12-18 | 西北橡胶塑料研究设计院有限公司 | A kind of thermal response self-expanding silastic material of resistance to ablation |
| CN108623262B (en) * | 2018-06-29 | 2021-11-02 | 佛山市高明区爪和新材料科技有限公司 | Heat insulation joint mixture |
| CN109021335A (en) * | 2018-07-14 | 2018-12-18 | 桂林理工大学 | A kind of formula of microballoon free foaming acrylonitrile butadiene packing material |
| CN109721762B (en) * | 2018-12-17 | 2022-06-03 | 航天材料及工艺研究所 | Resin-based ablation heat-insulation-prevention composite material and preparation method thereof |
| CN109880379B (en) * | 2019-02-22 | 2021-09-10 | 四川大学 | Flexible ablation-resistant composite material |
| CN109880368B (en) * | 2019-02-22 | 2021-06-15 | 四川大学 | Preparation method of flexible ablation-resistant composite material |
| CN112457511A (en) * | 2019-09-06 | 2021-03-09 | 艾比尔艺术工业有限公司 | Polyethylene terephthalate film coated with foamed rubber |
| CN111704800A (en) * | 2020-06-24 | 2020-09-25 | 步阳集团有限公司 | High-temperature ceramic blocking fireproof door sealing strip |
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| CN103874726A (en) * | 2011-10-25 | 2014-06-18 | 埃克森美孚化学专利公司 | Composition, foam, and article made therefrom |
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| CN103874726A (en) * | 2011-10-25 | 2014-06-18 | 埃克森美孚化学专利公司 | Composition, foam, and article made therefrom |
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