Preparation of exfoliated chloroprene rubber / vermiculite nano composite material by emulsion polymerization

A nano-composite material and neoprene technology are applied in the field of peeling neoprene/vermiculite nano-composite materials and their preparation to achieve excellent flame retardant effect

Inactive Publication Date: 2009-05-27
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, there are no reports about the preparation of exfoliated neoprene / vermiculite nanocomposites by emulsion polymerization using vermiculite that has not been organically treated.

Method used

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  • Preparation of exfoliated chloroprene rubber / vermiculite nano composite material by emulsion polymerization
  • Preparation of exfoliated chloroprene rubber / vermiculite nano composite material by emulsion polymerization
  • Preparation of exfoliated chloroprene rubber / vermiculite nano composite material by emulsion polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Embodiment 1: Preparation of neoprene raw rubber / vermiculite nanocomposite

[0054] (1) Purify vermiculite by sedimentation separation method, weigh a certain amount of vermiculite and distilled water to make a suspension, the "concentration" is 10g / L, stir rapidly for half an hour and then let it stand for 8 hours, then take it out within 10 cm by siphon method Centrifuge the supernatant, remove the distilled water, dry the obtained vermiculite at 50°C, and grind it through a 200-mesh sieve to obtain a pure vermiculite sample.

[0055] (2) The blend of vermiculite and water (3g vermiculite is dispersed in 300g water), oil phase (2-chloro-1,3-butadiene 100g, dodecanethiol 1.0g, rosin 4.0g), Put the water phase (2.5g of sodium petroleum sulfonate, 1.0g of sodium hydroxide, and 200g of water) into a three-necked flask at the same time, stir to fully mix the three phases; raise the temperature to 30±2°C, add 4g of potassium persulfate, and stir; then raise the temperatur...

Embodiment 2

[0059] Embodiment 2: the preparation of neoprene / vermiculite nanocomposite

[0060] (1) The purification of vermiculite is the same as in Example 1.

[0061] (2) The blend of vermiculite and water (6g vermiculite is dispersed in 400g water), oil phase (2-chloro-1,3-butadiene 100g, dodecanethiol 1.0g, rosin 4.0g), Put the water phase (4.5g sodium dodecylsulfonate, 1.0g sodium hydroxide, and 200g water) into a three-neck flask at the same time, stir to make the three phases fully mixed; raise the temperature to 35±2°C, add 4g of potassium persulfate, and stir; Then raise the temperature to 45±2°C, stir and react at constant temperature for 5 hours, cool, break the emulsion, wash, and dry to obtain the neoprene raw rubber / vermiculite nanocomposite material.

[0062] (3) The formulation, mastication, mixing and vulcanization of neoprene raw rubber / vermiculite nanocomposite material are the same as in Example 1.

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PUM

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Abstract

The invention discloses a method for preparing exfoliated chloroprene rubber/vermiculite nano-composites, in particular a method for preparing exfoliated chloroprene rubber /vermiculite nano-composites by using vermiculite not subjected to organification, taking 2-chloro-1,3-butadiene as a raw material and adopting a in-situ intercalative polymerization method in an emulsion system.

Description

technical field [0001] The invention relates to an exfoliated neoprene / vermiculite nanocomposite material and a preparation method thereof, in particular to the use of unorganized vermiculite and 2-chloro-1,3-butadiene small molecules in an emulsion system In-situ intercalation polymerization, a method for preparing exfoliated neoprene / vermiculite nanocomposites. Background technique [0002] Polymer / layered silicate nanocomposites are a new type of composite material with polymer as the continuous phase and layered silicate nanosheets as the dispersed phase. Since the thickness of the nanosheet is one to several nanometers, the width and length are several hundred to several thousand nanometers (Qi Zongneng, Shang Wenyu, Theory and Practice of Polymer / Layered Silicate Nanocomposites, Chemical Industry Press Society, 2002: 3-14), so the nanoparticles in the material structure have a large specific surface area and high surface energy, which can make the polymer material exh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F136/18C08F2/44C08F2/22C08K3/34C08L11/00
Inventor 张泽朋王春艳廖立兵于庆洲
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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