Ablation-resisting composite material resin composition and preparation method of ablation-resisting composite material

Abstract

The invention discloses an ablation-resisting composite material resin composition and a preparation method of an ablation-resisting composite material, belonging to the field of high polymer composite material preparation. The composition comprises phenolic resin, poly(bisphenoxy)phosphazene, a coupling agent and silicon oil. The preparation method of the composite material comprises the following steps: respectively dissolving poly(bisphenoxy)phosphazene and the phenolic resin in tetrahydrofuran for complete dissolution, mixing to form a homogeneous solution, then coating the solution on carbon fiber cloth, and drying the carbon fiber cloth in a vacuum oven for 12 hours at the temperature of 50 DEG C after airing; and cutting the fiber cloth into square blocks and overlapping the squareblocks in a mould, heating for 1 hour at the temperature of 100 DEG C so as to completely melt boron phenolic resin, then heating to 120 DEG C to carry out procuring for 1 hour, finally heating to 180 DEG C and curing for 6 hours at the pressure of 5MPa, taking out and cooling to room temperature so as to prepare the ablation-resisting composite material. The composite material has the advantagesof higher flexural modulus and thermal deformation temperature as well as lower linear ablation rate and quality ablation rate; and the ablation resistance of the composite material is improved.

Description

technical field

[0001] The invention relates to the field of polymer composite material preparation, in particular to an ablation-resistant composite material resin composition and a preparation method of the ablation-resistant composite material that can be used in the aerospace field. Background technique

[0002] In recent years, technologies such as aerospace and ballistic missiles have made great progress. Ablation-resistant materials are one of the key materials used. For example, the solid rocket motor insulation layer between the inner surface of the rocket motor casing and the propellant is mainly used to insulate the combustion chamber casing to protect the engine casing from being damaged by high temperature. Another example is that when the nose cone of an intercontinental missile re-enters the atmosphere, it will experience 7000-8000K ultra-high temperature, tens of megawatts of heat flux per square meter, 100g overload, high-speed erosion of particle clouds, n...

Examples

preparation example Construction

[0036] The preparation method of the above-mentioned composite material is as follows: 100 grams of weighed polyphenoxyphosphazene (PPP) and boron phenolic resin (BPR) are respectively dissolved in 1 liter of tetrahydrofuran, and after the dissolution is complete, they are mixed into a uniform solution, and then coated with On the carbon fiber plain weave cloth, after drying, put it into a vacuum oven for 12 hours at 50°C. Cut the fiber cloth into 10cm×10cm squares, stack them together and put them into the mold, heat them at 100°C for 1 hour with a flat vulcanizer to completely melt the boron phenolic resin, then raise the temperature to 120°C for pre-curing for 1 hour, and finally After raising the temperature to 180°C and a pressure of 5 MPa for 6 hours, take it out and cool it to room temperature.

[0037] The ablation-resistant composite material prepared in the embodiment of the present invention has high mechanical properties and ablation resistance, and can be used in ...

Embodiment 1

[0048] This embodiment provides an ablation-resistant composite material resin composition, which can be used to prepare ablation-resistant composite materials used in the fields of aerospace vehicles, missiles, rocket engines, etc., and the composition includes the raw materials in the following table;

[0049]

[0050] The method for preparing the composite material is: dissolve the weighed polyphenoxyphosphazene (PPP) (30g) and boron phenolic resin (BPR) (70g) in 1 liter of tetrahydrofuran respectively, and mix them into a uniform solution after dissolving completely , and then coated on carbon fiber plain cloth (3K plain cloth), after drying, put it in a vacuum oven at 50°C for 12 hours; cut the fiber cloth into squares of 10cm×10cm, stack them together and put them into the mold, and use Heat the plate vulcanizer at 100°C for 1 hour to completely melt the boron phenolic resin, then raise the temperature to 120°C for pre-curing for 1 hour, and finally raise the temperatu...

Embodiment 2

[0052] This embodiment provides an ablation-resistant composite material resin composition, which can be used to prepare ablation-resistant composite materials used in the fields of aerospace vehicles, missiles, rocket engines, etc., and the composition includes the raw materials in the following table;

[0053]

[0054] The method for preparing the composite material is: dissolve the weighed polyphenoxyphosphazene (PPP) (40g) and boron phenolic resin (BPR) (60g) in 1 liter of tetrahydrofuran respectively, and mix them into a uniform solution after the dissolution is complete , and then coated on carbon fiber plain cloth (3K plain cloth), after drying, put it in a vacuum oven at 50°C for 12 hours; cut the fiber cloth into squares of 10cm×10cm, stack them together and put them into the mold, and use Heat the plate vulcanizer at 100°C for 1 hour to completely melt the boron phenolic resin, then raise the temperature to 120°C for pre-curing for 1 hour, and finally raise the tem...

technical field

[0001] The invention relates to the field of polymer composite material preparation, in particular to an ablation-resistant composite material resin composition and a preparation method of the ablation-resistant composite material that can be used in the aerospace field. Background technique

[0002] In recent years, technologies such as aerospace and ballistic missiles have made great progress. Ablation-resistant materials are one of the key materials used. For example, the solid rocket motor insulation layer between the inner surface of the rocket motor casing and the propellant is mainly used to insulate the combustion chamber casing to protect the engine casing from being damaged by high temperature. Another example is that when the nose cone of an intercontinental missile re-enters the atmosphere, it will experience 7000-8000K ultra-high temperature, tens of megawatts of heat flux per square meter, 100g overload, high-speed erosion of particle clouds, n...

Examples

preparation example Construction

[0036] The preparation method of the above-mentioned composite material is as follows: 100 grams of weighed polyphenoxyphosphazene (PPP) and boron phenolic resin (BPR) are respectively dissolved in 1 liter of tetrahydrofuran, and after the dissolution is complete, they are mixed into a uniform solution, and then coated with On the carbon fiber plain weave cloth, after drying, put it into a vacuum oven for 12 hours at 50°C. Cut the fiber cloth into 10cm×10cm squares, stack them together and put them into the mold, heat them at 100°C for 1 hour with a flat vulcanizer to completely melt the boron phenolic resin, then raise the temperature to 120°C for pre-curing for 1 hour, and finally After raising the temperature to 180°C and a pressure of 5 MPa for 6 hours, take it out and cool it to room temperature.

[0037] The ablation-resistant composite material prepared in the embodiment of the present invention has high mechanical properties and ablation resistance, and can be used in ...

Embodiment 1

[0048] This embodiment provides an ablation-resistant composite material resin composition, which can be used to prepare ablation-resistant composite materials used in the fields of aerospace vehicles, missiles, rocket engines, etc., and the composition includes the raw materials in the following table;

[0049]

[0050] The method for preparing the composite material is: dissolve the weighed polyphenoxyphosphazene (PPP) (30g) and boron phenolic resin (BPR) (70g) in 1 liter of tetrahydrofuran respectively, and mix them into a uniform solution after dissolving completely , and then coated on carbon fiber plain cloth (3K plain cloth), after drying, put it in a vacuum oven at 50°C for 12 hours; cut the fiber cloth into squares of 10cm×10cm, stack them together and put them into the mold, and use Heat the plate vulcanizer at 100°C for 1 hour to completely melt the boron phenolic resin, then raise the temperature to 120°C for pre-curing for 1 hour, and finally raise the temperatu...

Embodiment 2

[0052] This embodiment provides an ablation-resistant composite material resin composition, which can be used to prepare ablation-resistant composite materials used in the fields of aerospace vehicles, missiles, rocket engines, etc., and the composition includes the raw materials in the following table;

[0053]

[0054] The method for preparing the composite material is: dissolve the weighed polyphenoxyphosphazene (PPP) (40g) and boron phenolic resin (BPR) (60g) in 1 liter of tetrahydrofuran respectively, and mix them into a uniform solution after the dissolution is complete , and then coated on carbon fiber plain cloth (3K plain cloth), after drying, put it in a vacuum oven at 50°C for 12 hours; cut the fiber cloth into squares of 10cm×10cm, stack them together and put them into the mold, and use Heat the plate vulcanizer at 100°C for 1 hour to completely melt the boron phenolic resin, then raise the temperature to 120°C for pre-curing for 1 hour, and finally raise the tem...

Images