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Halogenated rubber composition, preparation method and application

A kind of halogenated rubber, the technology of composition, is used in the preparation of above-mentioned halogenated rubber blend, the field of halogenated rubber blend

Active Publication Date: 2016-06-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Halogenated rubber composition, preparation method and application
  • Halogenated rubber composition, preparation method and application
  • Halogenated rubber composition, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Ingredient-Property Relationships of Halobutyl Compositions

[0039] In this experiment, after dissolving butyl rubber (isobutylene-p-methylstyrene copolymer can also be used) to form a concentration of 15 wt% hexane solution 400g, then add 2.4g liquid bromine to react, and then add a small amount of hydrogen to Neutralize with aqueous sodium solution and wash with distilled water to pH 7-8. Different amounts of magnesium hydroxide and aluminum hydroxide (Mg / Al molar ratio of 3:1) and epoxidized soybean oil were uniformly dispersed in hexane to form a dispersion liquid, then added and stirred for 5 minutes. Then use steam to remove hexane, and then use an open mill to squeeze and dehydrate to obtain a brominated butyl rubber composition dried to a volatile content of less than 0.5 wt%. Then the composition is mixed with the commercially available Exxon2222 as a comparison rubber using the following formula, and then tested at 180°C using a vulcanization tester accordin...

Embodiment 2

[0046] This example describes the difference in performance of the composition under different ratios of Mg and Al, wherein the weight fraction of the components containing Mg and Al is 1 wt% of the halogenated rubber composition, and the amount of epoxy soybean oil added is 1 wt% of the halogenated rubber composition. 1 wt%.

[0047] According to the steps in Example 1, the halogenated butyl rubber compositions containing different Mg / Al molar ratios were synthesized by adjusting the weight of additives added to the brominated rubber solution after washing. The comparison rubber is commercially available Exxon2222. The mixing formula and test method are the same as in Example 1. The results are shown in Table 2.

[0048] Table 2 The relationship between different contents of Mg, Al and epoxidized soybean oil and the properties of the composition

[0049]

[0050] It can be seen from Table 2 that under different molar ratios of Mg and Al, there is little difference in pe...

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Abstract

The present invention discloses a halogenated rubber composition. The halogenated rubber composition comprises: halogenated rubber, epoxy soybean oil and magnesium and aluminum containing components. The magnesium and aluminum components are selected from a mixture of magnesium hydroxide and aluminum hydroxide, hydroxy magnesium aluminum compounds, and hydroxy magnesium aluminum compound hydrates. The composition can significantly improve the curing speed of the halogenated rubber in the use and also has good scorch safety performance. The present invention also relates to a preparation method and an application of the halogenated rubber composition.

Description

technical field [0001] The invention relates to the field of rubber, in particular to a halogenated rubber blend. The present invention also relates to a process for the preparation of the above halogenated rubber blends. Background technique [0002] Halogenated butyl rubber, such as halogenated butyl rubber and brominated isobutylene-p-methylstyrene copolymer, is an important modified product of butyl rubber. It is usually prepared according to the following procedures: dissolving butyl rubber in saturated hydrocarbon to form a certain concentration of butyl rubber solution, and then react with liquid bromine or chlorine gas under the condition of sufficient mixing, then add lye to neutralize, add stabilizer, Steam condenses, squeezes, dehydrates, expands and dries, and packs into blocks. In addition to retaining the original excellent properties of butyl rubber such as excellent air tightness, low water permeability, good biological cleanliness, and excellent aging resi...

Claims

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Application Information

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IPC IPC(8): C08L23/28C08K5/1515C08K3/22C08F210/12C08F8/22
Inventor 钟林徐宏德包巧云孙秀霞
Owner CHINA PETROLEUM & CHEM CORP
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