Chloride salt stress corrosion cracking resistant polyamide composition and preparation method therefor and application thereof
A technology of stress corrosion cracking and polyamide composition, which is applied in the field of polyamide materials, can solve the problems of polyamide that have not been mentioned, the resistance to calcium chloride stress cracking cannot meet the use requirements, and the resistance to stress corrosion cracking of chloride salts. , to achieve the effect of low cost, low processing temperature and no pollution to the environment
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Embodiment 1-2 and comparative example 1-2
[0053] Table 1 lists the compositions of Examples 1-3 and Comparative Examples 1-2 and their anti-SSCC properties. These examples show that the SSCC resistance performance of the splines is significantly improved after radiation crosslinking treatment, especially the short carbon chain PA66 in Example 1 can obtain SSCC resistance equivalent to that of the long carbon chain PA612 in Comparative Example 2 after radiation crosslinking.
[0054] Table 1
[0055]
Embodiment 3-5 and comparative example 3-4
[0057] Table 2 lists the compositions of Examples 3-5 and Comparative Examples 3-4 and their SSCC resistance properties. It can be seen from Example 4 and Comparative Examples 3-4 that under the same weight percentage of the crosslinking agent, the crosslinking efficiency of PDM is higher than that of TAIC and TAC, so its corresponding anti-SSCC performance is more significant.
[0058] Table 2
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Embodiment 6-8 and comparative example 5
[0062] Table 3 lists the compositions of Examples 6-8 and Comparative Example 5 and their SSCC resistance. Compared with Comparative Example 5 without adding HS01, Examples 6-8 show stable SSCC resistance, especially at a higher radiation dose (150KGγ), HS01 has a more obvious radiation stabilizing effect, and after 30 days of salt stress corrosion After the second cycle processing, the spline does not break.
[0063] table 3
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