Medium-temperature repairing rubber material, preparation method thereof and application thereof in a propellant
A rubber material, medium temperature technology, applied in the field of ablation-resistant materials, can solve problems affecting the quality and reliability of engine products, achieve good mechanical properties, good bonding strength, and short vulcanization time
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[0045] Example 1
[0046] The composition and formula of the medium temperature repair rubber material are shown in Table 3;
[0047] Table 3 Example 1 Composition and formula of medium temperature repair rubber material
[0048] Serial number
[0049] (1) Material preparation: prepare materials according to the ratio of Example 1 in Table 3;
[0050] (2) Mixing: According to EPDM thin pass 3 times → aramid fiber
[0051] PA→ZnO→SiO 2 →LPO→APP→RD→vulcanizing agent→thin pass 6 times→vulcanization accelerator→thin pass out sheet to refine the middle temperature repair rubber material;
[0052] When preparing rubber compounds, it is necessary to avoid mixing accelerators and vulcanizing agents together and direct contact, in order to prevent the rapid decomposition of hydrogen peroxide compounds. The correct method of mixing operation is to first fully and uniformly disperse the vulcanizing agent into the raw rubber, and then slowly add the vulcanization accelerator. The mixed rubber s...
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[0057] Example 2
[0058] The composition and formula of medium temperature repair rubber materials are shown in Table 5;
[0059] Table 5 Example 2 Composition and formula of medium temperature repair rubber material
[0060]
[0061]
[0062] (1) Material preparation: prepare materials according to the ratio of Example 2 in Table 5;
[0063] (2) Mixing: According to EPDM thin pass 3 times → aramid fiber
[0064] PA→ZnO→SiO 2 →LPO→APP→RD→vulcanizing agent→thin pass 6 times→vulcanization accelerator→thin pass out sheet to refine EPDM insulation material.
[0065] When preparing rubber compounds, it is necessary to avoid mixing accelerators and vulcanizing agents and direct contact, in order to prevent the rapid decomposition of hydrogen peroxide compounds. The correct method of mixing operation is to first fully and uniformly disperse the vulcanizing agent into the raw rubber, and then slowly add the vulcanization accelerator. The mixed rubber should be stored at low temperature before...
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[0070] Example 3
[0071] The composition and formula of medium temperature repair rubber materials are shown in Table 7;
[0072] Table 7 Example 3 Composition and formula of medium temperature repair rubber material
[0073] Serial number
[0074] (1) Material preparation: prepare materials according to the ratio of Example 3 in Table 1;
[0075] (2) Mixing: According to EPDM thin pass 3 times → aramid fiber
[0076] PA→ZnO→SiO 2 →LPO→APP→RD→vulcanizing agent→thin pass 6 times→vulcanization accelerator→thin pass out sheet to refine EPDM insulation material.
[0077] When preparing rubber compounds, it is necessary to avoid mixing accelerators and vulcanizing agents together and direct contact, in order to prevent the rapid decomposition of hydrogen peroxide compounds. The correct method of mixing operation is to first fully and uniformly disperse the vulcanizing agent into the raw rubber, and then slowly add the vulcanization accelerator. The mixed rubber should be stored at low t...
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