CN103786292A - Process for forming ablation-resistant composite material - Google Patents
Process for forming ablation-resistant composite material Download PDFInfo
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- CN103786292A CN103786292A CN201410023941.7A CN201410023941A CN103786292A CN 103786292 A CN103786292 A CN 103786292A CN 201410023941 A CN201410023941 A CN 201410023941A CN 103786292 A CN103786292 A CN 103786292A
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Abstract
The invention discloses a process for forming an ablation-resistant composite material. The forming process comprises the following steps: modifying organic silicon resin by using an inorganic filler, ultrasonically shaking reinforced fibers in a solvent for about 30 minutes, ball-milling and mixing modified resin and the reinforced fibers to obtain a mixture, stirring and dispersing at a high speed for 30 minutes, regulating and controlling the viscosity of the mixture to be 50-90s to obtain a composite material, and performing one-step molding on the obtained composite material by adopting a spraying process, wherein a spray gun is a high-viscosity spray gun; the diameter of a nozzle is 2.2mm; the average thickness of a sprayed composite coating is about 0.1mm; the curing in a drying box at the temperature of 180 DEG C lasts for 30 minutes. The process comprises the steps of mixing and performing one-step spray molding on the resin and the fibers, the process is simple and easy to operate, and the obtained composite material has the excellent ablation resistance.
Description
Technical field
The present invention relates to resistance to ablative composite material field, especially relate to a kind of moulding process of the organosilicon of resistance to ablation composite.
Background technology
In recent years, along with the development of aerospace technology, the ablation resistance to resistance to ablative composite material and heat resistance have higher requirement.And the based composites of resistance to Ablative resin moulding process is to one of ablator performance impact key factor.Present stage, China's moulding process of resistance to ablative composite material widely usedly had a die press technology for forming, pultrusion molding process, and winding shaping process and RTM moulding process etc., but itself all there is its scope of application of some drawbacks limit in them.Make complexity as compression molding die, pressure requires strict; RTM moulding process fiber and resin infiltrate not exclusively, are not suitable for manufacturing large-sized composite material, demoulding difficulty.And ubiquity needs high-temperature pressurizing, the problem of fiber and resin-dipping weak effect.
Along with spraying coating process technology is updated development, it is used widely at aerospace field, is generally used for preparing single coating and composite coating.The people such as Huang Yuwen have studied a kind of spraying coating process with fiber coating, the composite coating excellence of preparing.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, solve the traditional moulding process of resistance to ablative composite material production efficiency low, Batch Process, the problems such as the harsh high-temperature pressurizing of complex process equipment and process conditions, provide a kind of organosilicon of resistance to ablation composite once through moulding technology.This technique is resin and the moulding of fiber mixing disposable spray finishing, and technique is simple, easy to operate, and gained composite has excellent ablation resistance.
For achieving the above object, technical scheme provided by the present invention is:
A kind of moulding process of resistance to ablative composite material, it is characterized in that: first with inorganic filler, organic siliconresin is carried out to modification, then fortifying fibre is placed on to ultrasonic vibration 30min left and right in solvent, again modified resin and fortifying fibre ball milling are mixed, high-speed stirred is disperseed 30min, regulate mixture viscosity to be controlled at 50-90s, gained composite material by adopting spraying coating process disposal molding.Spray gun is high viscosity spray gun, and the diameter of nozzle is 2.2mm.The about 0.1mm of average thickness of the composite of spraying, 180 ℃ of curing 30min in baking oven.
As preferably, above-mentioned resistance to ablative composite material, its component comprises organic siliconresin, fibrous material, zirconia, glass dust, silane coupler, solvent is appropriate.
As preferably, described fibrous material is glass fibre, high silica fiber, the one in carbon fiber or nylon fiber.
As preferably, described fibrous material weight ratio is the 20%-30% of resistance to ablative composite material total amount.Fibrous material, as reinforcement, improves the resistance to ablation of material and mechanical performance, selects chopped strand, the general 2-4mm of length.
As preferably, described zirconia is 325 orders, and zirconia has high thermal stability, high abrasion, and high ablation resistance, is a kind of effective filler of resistance to ablation.
As preferably, described silane coupler is KH-550, gamma-aminopropyl-triethoxy-silane.KH-550 contains Liang Zhong heterogeneity functional group and can connect with chemical bond with resin and inorganic filler respectively, plays the effect of bridge formation.
As preferably, described solvent is toluene and n-butanol.Toluene and n-butanol volume ratio are 1: 1.
It is as follows that the present invention is compared with the prior art advantage:
1. the existing moulding process of resistance to ablative composite material often having is as mould pressing process, pultrude process, RTM etc., they all need experience resin by injection under high-temperature pressurizing, flood again cure and demold twice technique after reinforcement, and the present invention selects resin, filler, chopped strand to mix disposable spray finishing moulding, fiber and resin flood completely mutually, reduce voidage; Reduce large mold and make difficulty; Technique is simple, easy to operate.
2. this spraying coating process fully contacts resin, reinforcement, the filler of resistance to ablation, strengthen its wellability and dispersiveness, bring into play more reinforcement, filler effect, be uniformly distributed and support resistance to ablation " charcoal layer ", improved ablation resistance and the high high-temp stability of composite.
The specific embodiment
Embodiment 1: first with zirconia metal oxide, organic siliconresin is carried out to modification, then fortifying fibre is placed on to ultrasonic vibration 30min left and right in solvent, modified resin and fortifying fibre ball milling are mixed, high-speed stirred is disperseed 30min again, regulates mixture viscosity to be controlled at 50-90s.Gained composite material by adopting spraying coating process disposal molding.Spray gun is high viscosity spray gun, and the diameter of nozzle is 2.2mm.The about 0.1mm of average thickness of the composite of spraying, 180 ℃ of curing 30min in baking oven, carry out resistance to ablation test.This composite linear ablative rate is 0.034mm/s, mass ablative rate 0.0447g/s.
Embodiment 2: first jointly organic siliconresin is carried out to modification with zirconia and glass dust, then fortifying fibre is placed on to ultrasonic vibration 30min left and right in solvent, modified resin and fortifying fibre ball milling are mixed, high-speed stirred is disperseed 30min again, regulates mixture viscosity to be controlled at 50-90s.Gained composite material by adopting spraying coating process disposal molding.Spray gun is high viscosity spray gun, and the diameter of nozzle is 2.2mm.The about 0.1mm of average thickness of the composite of spraying, 180 ℃ of curing 30min in baking oven, carry out resistance to ablation test.This composite linear ablative rate is 0.048mm/s, mass ablative rate 0.0624g/s.
Claims (7)
1. the moulding process of resistance to ablative composite material, it is characterized in that: first with inorganic filler, organic siliconresin is carried out to modification, then fortifying fibre is placed on to ultrasonic vibration 30min left and right in solvent, again modified resin and fortifying fibre ball milling are mixed, high-speed stirred is disperseed 30min, regulate mixture viscosity to be controlled at 50-90s, gained composite material by adopting spraying coating process disposal molding; Spray gun is high viscosity spray gun, and the diameter of nozzle is 2.2mm, the about 0.1mm of average thickness of the composite of spraying, 180 ℃ of curing 30min in baking oven.
2. a resistance to ablative composite material, is characterized in that, component comprises organic siliconresin, fibrous material, and zirconia, glass dust, silane coupler, solvent is appropriate.
3. according to the resistance to ablative composite material described in claim 2, it is characterized in that: described fibrous material is glass fibre high silica fiber, the one in carbon fiber or nylon fiber.
4. according to the resistance to ablative composite material described in claim 2, it is characterized in that: described fibrous material weight ratio is the 20%-30% of resistance to ablative composite material total amount.
5. according to the resistance to ablative composite material described in claim 2, it is characterized in that: described silane coupler is KH-550, gamma-aminopropyl-triethoxy-silane.
6. according to the resistance to ablative composite material described in claim 2, it is characterized in that: described solvent is toluene n-butanol, one or more mixing of isopropyl alcohol.
7. according to the resistance to ablative composite material described in claim 2, it is characterized in that: toluene and n-butanol volume ratio are 1: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410023941.7A CN103786292A (en) | 2014-01-14 | 2014-01-14 | Process for forming ablation-resistant composite material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410023941.7A CN103786292A (en) | 2014-01-14 | 2014-01-14 | Process for forming ablation-resistant composite material |
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| CN103786292A true CN103786292A (en) | 2014-05-14 |
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| CN201410023941.7A Pending CN103786292A (en) | 2014-01-14 | 2014-01-14 | Process for forming ablation-resistant composite material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106182539A (en) * | 2016-07-12 | 2016-12-07 | 歌尔股份有限公司 | Fiber reinforcement sheet manufacture method and application thereof |
| CN106609037A (en) * | 2015-11-05 | 2017-05-03 | 湖北航天化学技术研究所 | Solvent-free silicon-based ablation-resistant material |
| CN110514066A (en) * | 2019-08-20 | 2019-11-29 | 湖北三江航天江北机械工程有限公司 | A kind of manufacturing method of the pressing device of resistance to ablation and pressure plate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1102746A (en) * | 1993-11-09 | 1995-05-17 | 门亚威 | Soft high-temp. and incombustible heating cable |
| CN101237055A (en) * | 2008-02-03 | 2008-08-06 | 山东东岳神舟新材料有限公司 | A fiber enhanced inorganic adulterated full fluorin proton exchange film |
-
2014
- 2014-01-14 CN CN201410023941.7A patent/CN103786292A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1102746A (en) * | 1993-11-09 | 1995-05-17 | 门亚威 | Soft high-temp. and incombustible heating cable |
| CN101237055A (en) * | 2008-02-03 | 2008-08-06 | 山东东岳神舟新材料有限公司 | A fiber enhanced inorganic adulterated full fluorin proton exchange film |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106609037A (en) * | 2015-11-05 | 2017-05-03 | 湖北航天化学技术研究所 | Solvent-free silicon-based ablation-resistant material |
| CN106182539A (en) * | 2016-07-12 | 2016-12-07 | 歌尔股份有限公司 | Fiber reinforcement sheet manufacture method and application thereof |
| CN110514066A (en) * | 2019-08-20 | 2019-11-29 | 湖北三江航天江北机械工程有限公司 | A kind of manufacturing method of the pressing device of resistance to ablation and pressure plate |
| CN110514066B (en) * | 2019-08-20 | 2021-12-07 | 湖北三江航天江北机械工程有限公司 | Ablation-resistant pressing device and manufacturing method of pressing plate |
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Application publication date: 20140514 |