Silicone rubber/hindered phenol composite modified butyl chloride damping rubber and preparation method thereof

A technology of compound modification of chlorinated butyl rubber, which is applied in the field of damping materials, and achieves the effects of being economical and practical, expanding the scope of use, and low cost

Active Publication Date: 2018-01-26
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology uses certain chemical substances that modify the structure or property of polyhedral oligosils (PMO). These modifications help make POM more resistant against heat damage compared to regular polymers like neoprene), making them better suited for use in various applications such as insulation materials used under severe environments where temperatures may exceed 100°C without losing their ability to absorb vibrations effectively.

Problems solved by technology

This patented describes how different methods may help reduce the decrease in heat transfer caused by friction modifiers during processing of rubbers. These techniques include modifying the structure of the resins themselves through physical mixing processes like kneading and extrusion, addition of other compounds called platyfillers, crosslinkage reactions, and incorporating them into the rubbons. By doing this they provide better flexural durability without sacrificial agents while maintaining their original function.

Method used

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  • Silicone rubber/hindered phenol composite modified butyl chloride damping rubber and preparation method thereof
  • Silicone rubber/hindered phenol composite modified butyl chloride damping rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

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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PUM

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Abstract

The invention discloses silicone rubber/hindered phenol composite modified butyl chloride damping rubber and a preparation method thereof. The silicone rubber/hindered phenol composite modified butylchloride damping rubber is prepared by mixing the following components: chlorinated butyl rubber, silicone rubber, hindered phenol modified hydroxy-terminated polysiloxane, a vulcanizing agent, 2,4-di-t-butyl hexane peroxide, an accelerant, stearic acid, zinc oxide and an anti-ageing agent, wherein the hindered phenol modified hydroxy-terminated polysiloxane is prepared by reacting hydroxy-terminated polysiloxane and 3,5-bis(tert-butyl)-4-hydroxybenzoyl chloride. According to the silicone rubber/hindered phenol composite modified butyl chloride damping rubber disclosed by the invention, the hindered phenol modified hydroxy-terminated polysiloxane and the silicone rubber are added into the chlorinated butyl rubber, so that the effective damping temperature range as well as damping capacityand mechanical property of the chlorinated butyl rubber can be simultaneously and obviously improved, and the prepared damping rubber has excellent practical value.

Description

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Claims

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Application Information

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Owner SHANGHAI UNIV OF ENG SCI
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