A kind of silicone rubber/hindered phenol composite modified chlorinated butyl damping rubber and preparation method thereof
A composite modification, chlorobutyl technology, applied in the field of damping materials, to achieve the effect of improving the effective damping temperature range, damping performance and mechanical properties, economical and practical, and strong practical value
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Embodiment 1
[0045] 1. Preparation of hindered phenol modified hydroxyl-terminated polysiloxane:
[0046] Under the protection of nitrogen gas, 80g hydroxyl-terminated polysiloxane (also known as: hydroxyl-terminated polysiloxane), 40g 3,5-bis(tert-butyl)-4-hydroxyphenylpropionyl chloride and 0.3g iron catalyst ( For example: skeleton iron) was stirred and reacted at 120°C for 4 hours, the reaction was terminated, unreacted substances were removed, and the obtained product was dried at 40°C for 3 hours to obtain hindered phenol-modified hydroxyl-terminated polysiloxane for future use.
[0047] The performance test data of the prepared hindered phenol-modified hydroxyl-terminated polysiloxane are shown in Table 1.
[0048] 2. Preparation of silicone rubber / hindered phenol compound modified chlorinated butyl damping rubber:
[0049] a) first adjust the roll distance of the open mill to 2mm, then put 100g of chlorinated butyl rubber matrix, 50g of methyl vinyl silicone rubber raw rubber, and...
Embodiment 2
[0058] 1. Preparation of hindered phenol modified hydroxyl-terminated polysiloxane:
[0059] Under the protection of nitrogen gas, 90g hydroxyl-terminated polysiloxane (also known as: hydroxyl-terminated polysiloxane), 45g 3,5-bis(tert-butyl)-4-hydroxyphenylpropionyl chloride and 0.4g cobalt catalyst ( For example: Skeleton cobalt) was stirred and reacted at 130°C for 3 hours, the reaction was completed, unreacted substances were removed, and the obtained product was dried at 50°C for 2.5 hours to obtain hindered phenol-modified hydroxyl-terminated polysiloxane for future use.
[0060] The performance test data of the prepared hindered phenol-modified hydroxyl-terminated polysiloxane are shown in Table 1.
[0061] 2. Preparation of silicone rubber / hindered phenol compound modified chlorinated butyl damping rubber:
[0062] a) first adjust the roll distance of the open mill to 3mm, then put 100g of chlorinated butyl rubber matrix, 60g of methyl vinyl silicone rubber raw rubber...
Embodiment 3
[0071] 1. Preparation of hindered phenol modified hydroxyl-terminated polysiloxane:
[0072] Under the protection of nitrogen gas, 100g hydroxyl-terminated polysiloxane (also known as: hydroxyl-terminated polysiloxane), 50g 3,5-bis(tert-butyl)-4-hydroxyphenylpropionyl chloride and 0.5g nickel catalyst ( For example: framework nickel) stirred and reacted at 140°C for 2 hours,
[0073] Finish the reaction, remove unreacted substances, and dry the obtained product at 60°C for 2 hours to obtain hindered phenol-modified hydroxyl-terminated polysiloxane, which is ready for use.
[0074] The performance test data of the prepared hindered phenol-modified hydroxyl-terminated polysiloxane are shown in Table 1.
[0075] 2. Preparation of silicone rubber / hindered phenol compound modified chlorinated butyl damping rubber:
[0076] a) first adjust the roll distance of the open mill to 4mm, then put 100g of chlorinated butyl rubber matrix, 70g of methyl vinyl silicone rubber raw rubber, an...
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