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Nanometer composite polyisoprene/clay material and its prepn process

A nanocomposite material, polyisoprene technology, applied in the field of polyisoprene/clay nanocomposite material and its preparation, can solve the problems of large amount of wastewater and poor dispersion

Inactive Publication Date: 2006-06-28
中国石油化工股份有限公司北京燕山分公司研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that when the clay content is high, the dispersion is not as good as the reaction intercalation method, and the amount of wastewater is also large

Method used

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  • Nanometer composite polyisoprene/clay material and its prepn process
  • Nanometer composite polyisoprene/clay material and its prepn process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Add 72g of xylene and 9g of isoprene into a 500ml reactor, then add 5.2ml of intercalation clay dispersion (4g of intercalation clay / 100ml of xylene), start stirring, heat and keep the temperature at 50°C, add the trigger Required n-butyllithium 0.68ml (n-butyllithium molar concentration is 0.1315mmol / l, solvent is cyclohexane, the same below), after reacting for 6 hours, add terminator ethanol, then add antioxidant (1010 and 2.6.4 Mixing at a weight ratio of 1:1), the polymer glue is post-treated by a traditional method, and the product is dried for analysis and testing to obtain a polyisoprene / clay nanocomposite material. Product polyisoprene / clay nanocomposite material 1,2-structure content and 3,4-structure content sum is 9.6% (weight percent), 1,4-structure content is 90.4% (weight percent), intercalation Clay content is 2.3% (weight percent), glass transition temperature T g -62.4°C (differential thermal analysis DSC: DuPont TA2910 differential thermal scanning c...

Embodiment 2

[0040] Add 72g of xylene and 9g of isoprene into a 500ml reactor, then add 9.9ml of intercalation clay dispersion (4g of intercalation clay / 100ml of xylene), start stirring, heat and keep the temperature at 50°C, add the trigger Need 0.68ml of n-butyllithium (the molar concentration of n-butyllithium is 0.1315mmol / l), after reacting for 6 hours, add terminator ethanol, then add anti-aging agent (1010 and 2.6.4 are mixed in a weight ratio of 1:1), The polymer glue is post-treated by traditional methods, and the product is dried for analysis and testing to obtain a polyisoprene / clay nanocomposite material. Product polyisoprene / clay nanocomposite 1,2-structure content and 3,4-structure content sum is 12.3% (weight percent), 1,4-structure content is 87.7% (weight percent), intercalation Clay content is 4.4% (weight percent), glass transition temperature T g -60.5°C, the center temperature of thermal weight loss T dc It is 354.8°C.

Embodiment 3

[0042] Add 72g of xylene and 9g of isoprene into a 500ml reactor, then add 5.2ml of intercalation clay dispersion (4g of intercalation clay / 100ml of xylene), start stirring, heat and keep the temperature at 50°C, add the trigger Required n-butyllithium 0.46ml (n-butyllithium molar concentration is 0.1315mmol / l), after reacting for 6 hours, add anti-aging agent (1010 and 2.6.4 mix with weight ratio 1: 1), adopt traditional method to polymer After the glue solution is post-treated, the product is dried and then analyzed and tested to obtain a polyisoprene / clay nanocomposite material. Product polyisoprene / clay nanocomposite material 1,2-structure content and 3,4-structure content sum is 9.3% (weight percent), 1,4-structure content is 90.7% (weight percent), intercalation Clay content is 2.3% (weight percent), glass transition temperature T g -62.6°C, the center temperature of thermal weight loss T dc It is 355.3°C.

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Abstract

The present invention is nanometer composite polyisoprene / clay material and its preparation process. Through typical anionic solution polymerization process with alkyl lithium as initiator, organic hydrocarbon solvent and polar additive as microscopic structure regulator, and effective organic processing of clay, the present invention realizes the in-situ intercalation polymerization of isoprene monomer to prepare nanometer composite polyisoprene / clay material with excellent mechanism performance, heat resisting performance, obstructing performance, high chemical corrosion resistance and balanced comprehensive performance.

Description

technical field [0001] The invention relates to a kind of polyisoprene / clay nanocomposite material and a preparation method thereof. Background technique [0002] Polymer nanocomposites have significantly different mechanical properties and functionalization capabilities from traditional composites (micron-scale dispersed phases) due to the high refinement of the dispersed phase and the nanoscale effect. Among them, layered silicate / polymer nanocomposites have more prominent or specific properties due to the high shape factor ratio of the dispersed phase (layered silicate crystal sheets), such as: high rigidity, high strength, High barrier, high flame retardancy, chemical corrosion resistance, etc. There are generally three methods for preparing layered silicate / polymer nanocomposites: monomer in-situ intercalation polymerization, prepolymer intercalation reaction, and polymer intercalation. The prepolymer intercalation reaction method must allow enough prepolymers to be i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/5399C08L47/00C08F2/44
Inventor 李杨廖明义朱结东徐宏德吕占霞孙希华
Owner 中国石油化工股份有限公司北京燕山分公司研究院