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EPDM heat-insulation layer material, and preparation method and application thereof

A thermal insulation layer and rubber technology, which is applied in the field of EPDM thermal insulation materials, can solve the problems of low strength, easy damage, and time-consuming unvulcanized rubber of the thermal insulation layer, and achieve excellent process performance, excellent mechanical properties, and high construction accuracy.

Inactive Publication Date: 2019-06-07
HUBEI INST OF AEROSPACE CHEMOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the low strength of the unvulcanized rubber of the traditional heat insulation layer, it is easy to be damaged under the action of winding tension, so it can only be formed by manual patching process. experience, it is difficult to precisely control the insulation thickness

Method used

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  • EPDM heat-insulation layer material, and preparation method and application thereof
  • EPDM heat-insulation layer material, and preparation method and application thereof
  • EPDM heat-insulation layer material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The formula composition of EPDM insulation layer material is as shown in table 1;

[0041] Table 1 is the formula composition of EPDM insulation layer material in embodiment 1

[0042]

[0043] The preparation method is as follows:

[0044] The above-mentioned components are weighed according to the proportions in the table, and the weighed components are mixed with a double-roller open mill or an internal mixer according to the general rubber mixing process, then thinned and released, and then in (150 ~160)℃×5MPa×30min for vulcanization molding, used for performance test of thermal insulation layer.

[0045] The performance of the obtained EPDM insulation layer material is as shown in table 2;

[0046] The performance of the EPDM insulation layer material prepared by the embodiment 1 of table 2

[0047]

[0048] The EPDM raw rubber wrapping tape with a cross-sectional size of 40mm×1.5mm was prepared by using the heat insulating layer compounded rubber of Examp...

Embodiment 2

[0053] The formula composition of EPDM insulation layer material is as shown in table 4;

[0054] Table 4 is the formula composition of EPDM insulation layer material in embodiment 2

[0055]

[0056] Preparation method, with embodiment 1.

[0057] The performance of the obtained EPDM insulation layer material is as shown in table 5;

[0058] The performance of the EPDM insulation layer material prepared by the embodiment 2 of table 5

[0059]

[0060] The EPDM raw rubber winding tape with a cross-sectional size of 40mm×1.5mm was prepared with a calender using the heat-insulating layer compounded rubber of Example 2, and the length was about 50m. The properties of the winding tape are shown in Table 6;

[0061] Table 6 Properties of Wrapping Tape for Thermal Insulation Layer (Before Vulcanization)

[0062]

[0063] Wrap the above-mentioned EPDM raw tape on the engine mandrel, the winding tension is about 100N, and the thickness of the insulation layer is 3mm. Afte...

Embodiment 3

[0065] The formula composition of EPDM insulation layer material is as shown in table 7;

[0066] Table 7 is the formula composition of EPDM insulation layer material in embodiment 3

[0067]

[0068]

[0069] Preparation method, with embodiment 1.

[0070] The performance of the obtained EPDM insulation layer material is as shown in table 8;

[0071] The performance of the EPDM insulation layer material prepared by the embodiment 3 of table 8

[0072]

[0073] The EPDM raw rubber wrapping tape with a cross-sectional size of 40mm×1.5mm was prepared with a calender using the heat-insulating layer compounded rubber of Example 3. The properties of the winding tape are shown in Table 9;

[0074] Table 9 Properties of Wrapping Tape for Thermal Insulation Layer (Before Vulcanization)

[0075]

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Abstract

The invention relates to an EPDM heat-insulation layer material, and a preparation method and an application thereof, specifically to a windable EPDM heat-insulation layer material and a preparation method and an application for the windable EPDM heat-insulation layer material, belongs to the technical field of heat insulation of solid rocket motors, and specifically relates to an EPDM heat-insulation material which can be prepared into a raw adhesive tape, is applicable to a winding molding process and has excellent comprehensive performance. According to the invention, through addition of polar rubber into EPDM rubber for reinforcement, an unvulcanized heat-insulation layer material has certain tensile strength, and is easily prepared into a strip-shaped heat-insulation layer and wound into a disk, so continuous molding and mechanized operation can be realized.

Description

technical field [0001] The invention relates to an EPDM heat insulation layer material and its preparation method and application, in particular to a windable EPDM heat insulation layer material and its preparation method and application, belonging to the technical field of heat insulation of solid rocket motors, and in particular to a kind of EPDM heat insulation layer material which can be prepared Adhesive tape, suitable for winding forming process, EPDM thermal insulation material with excellent comprehensive performance. Background technique [0002] The heat insulation layer is an important part of the solid rocket motor combustion chamber. It is located between the inner surface of the shell and the propellant. Its main function is to resist the propellant gas under the harsh conditions of a series of high-temperature, high-pressure, and high-speed scour airflow generated by the propellant fuel. Scouring, inhibiting surface combustion and preventing the case from reac...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L11/00C08L61/06C08L77/10C08L45/00C08K13/04C08K7/06C08K3/36C08K3/22C08K3/04C08K13/02B29C53/56B29C53/84
Inventor 凌玲聂松王明超何永祝周俊
Owner HUBEI INST OF AEROSPACE CHEMOTECH
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