CN101219886A - Fibre reinforcing zinc aluminum phosphate based composite material and method for manufacturing the same - Google Patents
Fibre reinforcing zinc aluminum phosphate based composite material and method for manufacturing the same Download PDFInfo
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- CN101219886A CN101219886A CNA2008100638939A CN200810063893A CN101219886A CN 101219886 A CN101219886 A CN 101219886A CN A2008100638939 A CNA2008100638939 A CN A2008100638939A CN 200810063893 A CN200810063893 A CN 200810063893A CN 101219886 A CN101219886 A CN 101219886A
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Abstract
The invention relates to fiber-reinforced zinc and aluminum phosphate matrix composite and a preparation method thereof, which relate to fiber-reinforced composite and the preparation method thereof. The invention solves the problems of high curing temperature of the prior aluminum phosphate material or the carcinogenicity of chrome in a chrome and aluminum phosphate material. The fiber-reinforced zinc and aluminum phosphate matrix composite of the invention is prepared from the fiber-reinforced material and gelation material of zinc and aluminum phosphate; the preparation method comprises the following processes: under condition of 200 to 600 DEG C, heat treatment is carried out for the fiber-reinforced material for 10 minutes to 1 hour; then the fiber-reinforced zinc and aluminum phosphate matrix composite is prepared according to a compression molding technology; the process parameters are as follows: the molding temperature is 85 to 300 DEG C, the molding pressure is 2 to 15MPa, and the molding time is 6 to 35 hours. The product of the invention has high temperature resistance and good mechanical properties, without toxic substance; the product of the invention can be cured under 170 DEG C, with the bending strength under the room temperature up to 70 to 140MPa; the thermal weight loss is less than 8 percent when the composite is heated to 600 DEG C. The method of the invention is simple in technology, easy in material obtaining, low in cost, easy in popularization and utilization, and suitable for large-scale industrial production.
Description
Technical field
The present invention relates to a kind of fibre reinforced composites and preparation method thereof.
Background technology
Along with progress of science and technology, engine operation efficient improves constantly, and therefore the requirement to the material thermal characteristics constantly raises, and the research work of high-temperature-resistant structure material more and more comes into one's own.The phosphoric acid salt material is a kind of important high temperature material that grows up on cement, refractory materials and ceramic basis, it has assembled three's major advantage, have characteristics such as high temperature resistant, high strength, dielectric properties excellence, anti-oxidant and good structure designability, thermal expansivity be little, be subjected to extensive concern both domestic and external in recent years.At present, the phosphoric acid salt material of broad research and use mainly contains two big classes: aluminum phosphate class material and chrome-alumina phosphate class material.Aluminum phosphate class material does not contain Toxic matter, but its moulding needs just can carry out under the high temperature more than 500 ℃.Chrome-alumina phosphate class material has comparatively excellent performance, and the manufacturability of its processing is also better, can solidify below 200 ℃, and this class material has obtained application on Muscovite cruise missile, anti-ballistic, tactics model guided missile and space shuttle according to the literature.But chrome-alumina phosphate class material contains chromium class material, and this is a confirmed class material that contains the height carinogenicity, and European Union has clearly limited the use of chromium in the ROHS instruction of putting into effect in 2006.
Summary of the invention
The objective of the invention is in order to solve present aluminum phosphate class material cured temperature height, or chromium has the problem of carinogenicity in the chrome-alumina phosphate class material, and a kind of fibre reinforcing zinc aluminum phosphate based composite material and preparation method thereof is provided.
Fibre reinforcing zinc aluminum phosphate based composite material of the present invention mainly is to be made by fiber reinforced material and zinc phosphate aluminium glue gel material, and wherein fiber reinforced material is through heat treated; Also can increase supercoat on the surface of fiber reinforced material.
The preparation method of fibre reinforcing zinc aluminum phosphate based composite material realizes by following step among the present invention: under 200～600 ℃ of conditions, with fiber reinforced material thermal treatment 10min～1h; Prepare fibre reinforcing zinc aluminum phosphate based composite material according to die press technology for forming then, the processing parameter of die press technology for forming is: molding temperature is 85～300 ℃, and molding pressure is 5～10MPa, and clamp time is 6～35 hours.
Different with aforesaid method is: behind the heat treatment of fibre strongthener, be ultrasonic immersing 10～30min under 48 ± 1.5KHz condition in ultrasonic frequency in the preparation process of fibre reinforcing zinc aluminum phosphate based composite material; Thereafter under 100～120 ℃ of conditions, dried 1～3 hour, promptly make supercoat on the fiber reinforced material surface; Other step is identical with aforesaid method.Adopt ultrasonic coated technique can make coated substance be coated in every fiber surface equably, eliminate the coating difference between fibrous bundle, simultaneously under action of ultrasonic waves as much as possible reinforcing fiber be coated with combining of interlayer, make the fiber bodies performance obtain to a certain degree optimization.
Described fiber reinforced material is a kind of in high silica fiber, silica fiber, glass fibre, the silicon carbide fiber; Zinc phosphate aluminium glue gel material is made by zinc phosphate aluminum solutions and mineral filler, and mineral filler accounts for 5%～40% of zinc phosphate aluminum solutions quality, and the zinc phosphate aluminum solutions is to be made by zinc oxide, aluminium hydroxide, strong phosphoric acid and deionized water; The mol ratio of wherein said zinc oxide and aluminium hydroxide is 1～10: 1, the mol ratio of phosphoric and metallic element total mole number is 2～10: 1, the solid content of zinc phosphate aluminum solutions is 25wt%～75wt% (parts by weight), and the particle diameter of mineral filler is 300～400 orders.Mineral filler is Al
2O
3, MgO, ultra-fine SiO
2, Na
2B
4O
7, ZrO
2, Bi
2O
3In one or more mix to form; Mineral filler is that mixture is by 40～85 parts of Al by ratio of quality and the number of copies
2O
3, 0.1～8 part of MgO, 0.1～6.5 part of ultra-fine SiO
2, 0.1～25 part of ZrO
2, 0.1～5 part of Na
2B
4O
7, 0.1～10 part of Bi
2O
3In two or more composition.Described supercoat is silane coupling agent type coating, inorganic nano-particle collosol coating or silicone resin coating.Described silane coupling agent is a kind of in silane resin acceptor kh-550, silane coupling agent KH-560, the silane coupling A-151; Inorganic nano-particle colloidal sol is SiO
2Colloidal sol, Al
2O
3Colloidal sol, TiO
2A kind of in the colloidal sol; Silicone resin is a kind of in methyl silicon resin, the phenyl polysiloxane.
The present invention has following advantage:
1, fibre reinforcing zinc aluminum phosphate based composite material is a class advanced composite material system, it has overcome the disadvantage of traditional phosphoric acid salt material, it is good not contain Toxic matter and forming process, its forming process can adopt the mould pressing process of traditional polymer matrix composites, Device-General is easy to realize suitability for industrialized production.
2, fibre reinforcing zinc aluminum phosphate based composite material has higher heat-resistant stability, adopts the thermal analyzer of the anti-company of speeding of Germany, and rate of weight loss detected its flexural strength and can reach 70～140MPa less than 8% when goods were heated to 600 ℃ under the room temperature.Can be used as high-temperature-resistant structure material and electromagnetic wave transparent material life-time service under 150～200 ℃ environment.
3, the moulding process of fibre reinforcing zinc aluminum phosphate based composite material of the present invention is simple, raw material is easy to get, cost is low, easy to operate, can not cause harmful effect to human body and surrounding environment.
4, the cost of fibre reinforcing zinc aluminum phosphate based composite material of the present invention is significantly less than like products such as silicone resin, has high P/C ratio, remarkable in economical benefits.
Description of drawings
Fig. 1 is that synthetic zinc phosphate aluminium glue gel material of the present invention is 175 ℃ of crooked fracture SEM shape appearance figures of prepared down matrix material at molding temperature.Fig. 2 is that synthetic zinc phosphate aluminium glue gel material of the present invention is 255 ℃ of crooked fracture SEM shape appearance figures of prepared down matrix material at molding temperature.
Embodiment
Embodiment one: fibre reinforcing zinc aluminum phosphate based composite material mainly is to be made through die press technology for forming by fiber reinforced material and zinc phosphate aluminium glue gel material in the present embodiment; Wherein fiber reinforced material is through heat treated.
Fibre reinforcing zinc aluminum phosphate based composite material compact structure of the present invention, excellent performance have better heat-resisting stability, and the flexural strength of matrix material can reach 60MPa～140MPa, applied range under the room temperature.
Fiber reinforced material accounts for 30～75% of fibre reinforcing zinc aluminum phosphate based composite material weight in the present embodiment.
Embodiment two: what present embodiment and embodiment one were different is to increase supercoat on the surface of fiber reinforced material, and supercoat is silane coupling agent type coating, inorganic nano-particle collosol coating or silicone resin coating; Described silane coupling agent is a kind of in silane resin acceptor kh-550, silane coupling agent KH-560, the silane coupling A-151; Inorganic nano-particle colloidal sol is SiO
2Colloidal sol, Al
2O
3Colloidal sol, TiO
2A kind of in the colloidal sol; Silicone resin is a kind of in methyl silicon resin, the phenyl polysiloxane; Inorganic nano-particle colloidal sol adopts the sol-gel method preparation.
Supercoat accounts for 0.05～2% of fiber reinforced material weight in the present embodiment.Described silane coupling agent is the commercially available prod.
Embodiment three: present embodiment is different with embodiment one or two be fiber reinforced material account for fibre reinforcing zinc aluminum phosphate based composite material weight 40～60%.Other is identical with embodiment one or two.
Embodiment four: present embodiment is different with embodiment one or two be fiber reinforced material account for fibre reinforcing zinc aluminum phosphate based composite material weight 55%.Other is identical with embodiment one or two.
Embodiment five: what present embodiment was different with embodiment one or two is that fiber reinforced material is high silica fiber, silica fiber, glass fibre or silicon carbide fiber.Other is identical with embodiment one or two.
Embodiment six: what present embodiment was different with embodiment one or two is that zinc phosphate aluminium glue gel material is made by zinc phosphate aluminum solutions and mineral filler, mineral filler accounts for 5%～40% of zinc phosphate aluminum solutions quality, and the zinc phosphate aluminum solutions is to be made by zinc oxide, aluminium hydroxide, strong phosphoric acid and deionized water; The mol ratio of wherein said zinc oxide and aluminium hydroxide is 1～10: 1, the mol ratio of phosphoric and metallic element total mole number is 2～10: 1, the solid content of zinc phosphate aluminum solutions is 25wt%～75wt% (parts by weight), and the particle diameter of mineral filler is 300～400 orders.Mineral filler is Al
2O
3, MgO, ultra-fine SiO
2, Na
2B
4O
7, ZrO
2, Bi
2O
3In one or more mix to form; Mineral filler is that mixture is by 40～85 parts of Al by ratio of quality and the number of copies
2O
3, 0.1～8 part of MgO, 0.1～6.5 part of ultra-fine SiO
2, 0.1～25 part of ZrO
2, 0.1～5 part of Na
2B
4O
7, 0.1～10 part of Bi
2O
3In two or more composition.Zinc phosphate aluminium glue gel material preparation method step is as follows: one, mineral filler pre-treatment: earlier dry ball milling 20～30h is adopted in mineral filler, then the mineral filler behind the ball milling is placed the retort furnace of air dielectric, calcination 1.5～10h under 950～1100 ℃ condition, naturally cool to room temperature, then cooled mineral filler is ground to 300～400 orders; Two, the preparation of zinc phosphate aluminum solutions: zinc oxide and aluminium hydroxide are dissolved in the deionized water, add strong phosphoric acid then while stirring, under 70～130 ℃ condition, reacted 0.5～2.5 hour, obtain transparent viscous liquid, regulating solid content with deionized water is 25%～75%, obtains the zinc phosphate aluminum solutions; Three, the mineral filler of adding after step 1 is handled in the zinc phosphate aluminum solutions continues to react 1～5 hour down at 70～130 ℃, naturally cools to room temperature and makes white gelatinoid, obtains zinc aluminum phosphate based gelled material.Other is identical with embodiment one or two.
Embodiment seven: what present embodiment was different with embodiment one or two is that die press technology for forming is lamination compression molding or fabric mould platen press.Other is identical with embodiment one or two.
Embodiment eight: present embodiment realizes by following step with the method that fiber reinforced material and zinc phosphate aluminium glue gel material prepare fibre reinforcing zinc aluminum phosphate based composite material:
Under 200～600 ℃ of conditions, with fiber reinforced material thermal treatment 10min～1h (purpose is to remove fiber reinforced material surface wax layer or original commercial coating); Prepare fibre reinforcing zinc aluminum phosphate based composite material according to die press technology for forming then, the processing parameter of die press technology for forming is: molding temperature is 85～300 ℃, and molding pressure is 5～10MPa, and clamp time is 6～35 hours.
Described fiber reinforced material is a kind of in high silica fiber, silica fiber, glass fibre, the silicon carbide fiber.Other is identical with embodiment one or two.
Present embodiment obtains that fiber reinforced material accounts for 30～75% of fibre reinforcing zinc aluminum phosphate based composite material in the product.
Embodiment nine: what present embodiment and embodiment eight were different is behind the heat treatment of fibre strongthener, is ultrasonic immersing 10～30min under 48 ± 1.5KHz condition in ultrasonic frequency; Thereafter under 100～120 ℃ of conditions, dried 1～3 hour, promptly make the supercoat that accounts for fiber reinforced material weight 0.05～2% on the fiber reinforced material surface.
Supercoat described in the present embodiment is silane coupling agent type coating, inorganic nano-particle collosol coating or silicone resin coating.Described silane coupling agent is a kind of in silane resin acceptor kh-550, silane coupling agent KH-560, the silane coupling A-151; Inorganic nano-particle colloidal sol is SiO
2Colloidal sol, Al
2O
3Colloidal sol, TiO
2A kind of in the colloidal sol; Silicone resin is a kind of in methyl silicon resin, the phenyl polysiloxane.
Embodiment ten: present embodiment adopts sol-gel method to prepare inorganic nano-particle colloidal sol.
SiO
2The preparation method of colloidal sol is: stir in weighing 20.80g tetraethoxy and the 9.20g dehydrated alcohol adding reactor, the speed with 1～3 droplet/second drips concentrated hydrochloric acid (37wt%) in reaction system then, and the consumption of concentrated hydrochloric acid is 0.20g; After stirring 20min under 25 ℃ of conditions, add 3.60g distilled water again, under 25 ℃ of conditions, react 1h then; When temperature of reaction system was elevated to 70 ℃, condensing reflux reaction 2h was cooled to room temperature again, obtains the SiO of transparent homogeneous
2Colloidal sol.Use SiO
2Matrix material flexural strength 120～125MPa after colloidal sol is handled.
Al
2O
3The preparation method of colloidal sol is: the hydrolysis aluminum isopropylate is regulated its pH value with nitric acid be about 4,85 ℃ of following back flow reaction are 4 hours then, still aging 2 days, reduce to room temperature naturally and get Al
2O
3Colloidal sol.Use Al
2O
3Matrix material flexural strength after colloidal sol is handled is 130～140MPa.
TiO
2The preparation method of colloidal sol is: the hydrolysis butyl (tetra) titanate is stirred 4h with 20 times of propyl carbinol dilution backs, and the trolamine with 40ml adds above-mentioned solution in 90 ℃ of back flow reaction 6h then, reduces to room temperature naturally, gets TiO
2Colloidal sol.Use TiO
2Matrix material flexural strength after colloidal sol is handled is 60～70MPa.
Embodiment 11: present embodiment is different with embodiment eight or nine is that the thermal treatment temp of fiber reinforced material is 250～350 ℃ in the reaction of preparation fibre reinforcing zinc aluminum phosphate based composite material.Other is identical with embodiment eight or nine.
When adopting present embodiment, the fiber bodies strength damage is little, but surface wax layer or original commercial coating removal are unclean, influence the mechanical property of matrix material, the matrix material flexural strength 65～110MPa of preparation.
Embodiment 12: present embodiment is different with embodiment eight or nine is that thermal treatment temp is 400 ℃ in the reaction of preparation fibre reinforcing zinc aluminum phosphate based composite material.Other is identical with embodiment eight or nine.
When adopting present embodiment, the fiber bodies strength damage is less, can thoroughly remove the original wax layer of fiber reinforcement surface, has the commercial coating of a spot of remnants and exists, and the composite materials property of preparation is good, flexural strength 85～140MPa.
Embodiment 13: present embodiment is different with embodiment eight or nine is that thermal treatment temp is 600 ℃ in the reaction of preparation fibre reinforcing zinc aluminum phosphate based composite material.Other is identical with embodiment eight or nine.
Though can thoroughly remove the original wax layer and the commercial coating of fiber reinforcement surface when adopting present embodiment, the fiber bodies strength damage is bigger, the composite wood flexural strength 75～120MPa of preparation.
Embodiment 14: present embodiment is different with embodiment eight or nine is that die press technology for forming is lamination compression molding or fabric mould platen press in the reaction of preparation fibre reinforcing zinc aluminum phosphate based composite material.Other is identical with embodiment eight or nine.
Embodiment 15: present embodiment is different with embodiment eight or nine is that molding temperature is 150～175 ℃ in the reaction of preparation fibre reinforcing zinc aluminum phosphate based composite material.Other is identical with embodiment eight or nine.
Embodiment 16: present embodiment is different with embodiment eight or nine is that molding temperature is 160 ℃ in the reaction of preparation fibre reinforcing zinc aluminum phosphate based composite material.Other is identical with embodiment eight or nine.
Embodiment 17: present embodiment is different with embodiment eight or nine is that molding pressure is 6～9MPa in the reaction of preparation fibre reinforcing zinc aluminum phosphate based composite material.Other is identical with embodiment eight or nine.
Embodiment 18: present embodiment is different with embodiment eight or nine is that molding pressure is 7MPa in the reaction of fibre reinforcing zinc aluminum phosphate based compound 18 materials of preparation.Other is identical with embodiment eight or nine.
Embodiment 19: present embodiment is different with embodiment eight or nine is that molding pressure is 8MPa in the reaction of preparation fibre reinforcing zinc aluminum phosphate based composite material.Other is identical with embodiment eight or nine.
Embodiment 20: present embodiment is different with embodiment eight or nine is that clamp time is 10～30 hours in the reaction of preparation fibre reinforcing zinc aluminum phosphate based composite material.Other is identical with embodiment eight or nine.
Embodiment 21: present embodiment is different with embodiment eight or nine is that clamp time is 15～25 hours in the reaction of preparation fibre reinforcing zinc aluminum phosphate based composite material.Other is identical with embodiment eight or nine.
Embodiment 22: present embodiment is different with embodiment eight or nine is that clamp time is 20 hours in the reaction of preparation fibre reinforcing zinc aluminum phosphate based composite material.Other is identical with embodiment eight or nine.
Claims (10)
1. a fibre reinforcing zinc aluminum phosphate based composite material is characterized in that fibre reinforcing zinc aluminum phosphate based composite material mainly is to be made through die press technology for forming by fiber reinforced material and zinc phosphate aluminium glue gel material; Wherein fiber reinforced material is through heat treated.
2. fibre reinforcing zinc aluminum phosphate based composite material according to claim 1 is characterized in that increasing supercoat on the surface of fiber reinforced material; Supercoat is silane coupling agent type coating, inorganic nano-particle collosol coating or silicone resin coating; Described silane coupling agent is a kind of in silane resin acceptor kh-550, silane coupling agent KH-560, the silane coupling A-151; Inorganic nano-particle colloidal sol is SiO
2Colloidal sol, A1
2O
3Colloidal sol, TiO
2A kind of in the colloidal sol; Silicone resin is a kind of in methyl silicon resin, the phenyl polysiloxane.
3. fibre reinforcing zinc aluminum phosphate based composite material according to claim 1 and 2 is characterized in that fiber reinforced material is a kind of in high silica fiber, silica fiber, glass fibre, the silicon carbide fiber.
4. fibre reinforcing zinc aluminum phosphate based composite material according to claim 1 and 2, it is characterized in that zinc phosphate aluminium glue gel material made by zinc phosphate aluminum solutions and mineral filler, mineral filler accounts for 5%～40% of zinc phosphate aluminum solutions quality, and the zinc phosphate aluminum solutions is to be made by zinc oxide, aluminium hydroxide, strong phosphoric acid and deionized water; The mol ratio of wherein said zinc oxide and aluminium hydroxide is 1～10: 1, and the mol ratio of phosphoric and metallic element total mole number is 2～10: 1, and the solid content of zinc phosphate aluminum solutions is 25wt%～75wt%, and the particle diameter of mineral filler is 300～400 orders; Mineral filler is A1
2O
3, MgO, ultra-fine SiO
2, Na
2B
4O
7, ZrO
2, Bi
2O
3In one or more mix to form; Mineral filler is that mixture is by 40～85 parts of Al by ratio of quality and the number of copies
2O
3, 0.1～8 part of MgO, 0.1～6.5 part of ultra-fine SiO
2, 0.1～25 part of ZrO
2, 0.1～5 part of Na
2B
4O
7, 0.1～10 part of Bi
2O
3In two or more composition.
5. the method for preparing the described fibre reinforcing zinc aluminum phosphate based composite material of claim 1, the preparation method who it is characterized in that fibre reinforcing zinc aluminum phosphate based composite material realizes by following step: under 200～600 ℃ of conditions, with fiber reinforced material thermal treatment 10min～1h; Prepare fibre reinforcing zinc aluminum phosphate based composite material according to die press technology for forming then, the processing parameter of die press technology for forming is: molding temperature is 85～300 ℃, and molding pressure is 5～10MPa, and clamp time is 6～35 hours.
6. the preparation method of fibre reinforcing zinc aluminum phosphate based composite material according to claim 5, it is characterized in that the heat treatment of fibre strongthener after, be ultrasonic immersing 10～30min under 48 ± 1.5KHz condition in ultrasonic frequency; Thereafter under 100～120 ℃ of conditions, dried 1～3 hour, promptly make supercoat on the fiber reinforced material surface.
7. according to the preparation method of claim 5 or 6 described fibre reinforcing zinc aluminum phosphate based composite materials, it is characterized in that preparing that die press technology for forming is lamination compression molding or fabric mould platen press in the reaction of fibre reinforcing zinc aluminum phosphate based composite material.
8. according to the preparation method of claim 5 or 6 described fibre reinforcing zinc aluminum phosphate based composite materials, it is characterized in that preparing that molding temperature is 120～175 ℃ in the reaction of fibre reinforcing zinc aluminum phosphate based composite material.
9. according to the preparation method of claim 5 or 6 described fibre reinforcing zinc aluminum phosphate based composite materials, it is characterized in that preparing that molding pressure is 6～9MPa in the reaction of fibre reinforcing zinc aluminum phosphate based composite material.
10. according to the preparation method of claim 5 or 6 described fibre reinforcing zinc aluminum phosphate based composite materials, it is characterized in that preparing that clamp time is 10～30 hours in the reaction of fibre reinforcing zinc aluminum phosphate based composite material.
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| CN102514346A (en) * | 2011-12-19 | 2012-06-27 | 西南科技大学 | Preparation method of quartz fiber/chrome aluminum phosphate-based high temperature wave-transmitting material |
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| CN102514346A (en) * | 2011-12-19 | 2012-06-27 | 西南科技大学 | Preparation method of quartz fiber/chrome aluminum phosphate-based high temperature wave-transmitting material |
| CN102514346B (en) * | 2011-12-19 | 2014-08-13 | 西南科技大学 | Preparation method of quartz fiber/chrome aluminum phosphate-based high temperature wave-transmitting material |
| CN102653147B (en) * | 2012-05-10 | 2014-08-13 | 西南科技大学 | Preparation method of quartz fiber strengthening chromium phosphate radome material |
| CN102653147A (en) * | 2012-05-10 | 2012-09-05 | 西南科技大学 | Preparation method of quartz fiber strengthening chromium phosphate radome material |
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| CN103232192B (en) * | 2013-04-12 | 2015-02-25 | 西南科技大学 | A preparation method for an aramid fiber / organosilicon hybridized chromium aluminum phosphate composite material |
| CN103232192A (en) * | 2013-04-12 | 2013-08-07 | 西南科技大学 | A preparation method for an aramid fiber / organosilicon hybridized chromium aluminum phosphate composite material |
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| CN105537594A (en) * | 2016-03-08 | 2016-05-04 | 苏州珍展科技材料有限公司 | Resin-aluminum-based layered composite fan blade |
| CN107244877A (en) * | 2017-05-22 | 2017-10-13 | 陕西科技大学 | A kind of bimetallic oxide silicon carbide fibre multi-scale reinforcing body enhancing aluminum phosphate ceramic base structural wave-absorbing material and preparation method thereof |
| CN107244877B (en) * | 2017-05-22 | 2019-05-17 | 陕西科技大学 | A kind of bimetallic oxide-silicon carbide fibre multi-scale reinforcing body enhancing aluminum phosphate ceramic base structural wave-absorbing material and preparation method thereof |
| CN108455995A (en) * | 2018-02-09 | 2018-08-28 | 青海大学 | A kind of silicon carbide fibre enhancing aluminum phosphate ceramic matric composite and preparation method thereof |
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