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Special modified graphene for polymerization of vinyl chloride

A technology of vinyl chloride polymerization and graphene, which is applied in the treatment of dyed low-molecular organic compounds, dyed high-molecular organic compounds, and fibrous fillers. Simple, Reinforced Resin Performance, Effect with Many Edge Defects

Active Publication Date: 2015-03-25
XIAMEN KNANO GRAPHENE TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the graphene currently on the market is general-purpose and mass-market products, and there are still relatively few dedicated graphene developed for a certain field or product, and only certain progress has been made in batteries, coatings, etc.
For composite materials, especially general-purpose plastics such as PVC, the development of special graphene products has not been reported yet

Method used

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  • Special modified graphene for polymerization of vinyl chloride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Weigh 30g of sodium hydroxide and 300g of water to make a sodium hydroxide solution, add 5g of earthy graphite, and bathe in water at 150°C for 2 hours; take out the mixed solution and filter, wash with water and suction filter until neutral, and obtain graphite slurry .

[0031] (2) Fully dissolve 0.15 g of sodium dodecylbenzene sulfonate and 0.1 g of hydroxypropyl methylcellulose in 600 g of water to form a composite modifier solution.

[0032] (3) Add the graphite slurry in step (1) to the composite modifier solution in step (2), and mix thoroughly to obtain a uniform graphite dispersion.

[0033] (4) Add the graphite dispersion in the step (3) to a nano-sand mill, grind fully, the rotating speed is 2500rpm, and the time is 5 hours to obtain a modified graphene slurry.

[0034] (5) Take out the modified graphene slurry and spray dry to obtain the modified graphene powder.

Embodiment 2

[0036] (1) Weigh 30g of sodium hydroxide and 300g of water to make a sodium hydroxide solution, add 5g of earthy graphite, and bathe in water at 150°C for 2 hours; take out the mixed solution and filter, wash with water and suction filter until neutral, and obtain graphite slurry .

[0037] (2) Fully dissolve 0.1g sodium dodecylbenzenesulfonate, 0.1g hydroxypropyl methylcellulose, and 0.05g sodium stearate in 600g water to form a compound modifier solution.

[0038] (3) Add the graphite slurry in step (1) to the composite modifier solution in step (2), and mix thoroughly to obtain a uniform graphite dispersion.

[0039] (4) Add the graphite dispersion in the step (3) to a nano-sand mill, grind fully, the rotating speed is 2500rpm, and the time is 5 hours to obtain a modified graphene slurry.

[0040] (5) Take out the modified graphene slurry and spray dry to obtain the modified graphene powder.

Embodiment 3

[0042] (1) Weigh 10g of potassium hydroxide and 200g of water to make a potassium hydroxide solution, add 4g of earthy graphite, and bathe in water at 150°C for 2 hours; take out the mixed solution and filter, wash with water and suction filter until neutral to obtain graphite slurry .

[0043] (2) Dissolve 0.1g of sodium dodecylbenzenesulfonate and 0.1g of hydroxypropyl methylcellulose in 400g of water to form a composite modifier solution.

[0044] (3) Add the graphite slurry in step (1) to the composite modifier solution in step (2), and mix thoroughly to obtain a uniform graphite dispersion.

[0045] (4) Add the graphite dispersion in the step (3) to a nano-sand mill, grind thoroughly, the rotating speed is 2000rpm, and the time is 8 hours to obtain a modified graphene slurry.

[0046] (5) Take out the modified graphene slurry and spray dry to obtain the modified graphene powder.

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Abstract

The invention belongs to the technical field of graphene materials and particularly relates to special modified graphene for polymerization of vinyl chloride. The special modified graphene for polymerization of vinyl chloride comprises graphene powder and multiple surface modifiers, wherein the weight ratio of the surface modifiers is 0.5-5wt% and the surface and edges of graphene are uniformly coated with the surface modifiers. The preparation method is simple, efficient and environment-friendly, industrialized mass production can be achieved, the obtained product is particularly suitable for a vinyl chloride suspension polymerization system, the properties including thermal property, mechanical property and electrical property of polyvinyl chloride (PVC) can be significantly improved and thus the market application range of PVC is expanded.

Description

technical field [0001] The invention belongs to the technical field of graphene materials, in particular to a modified graphene specially used for vinyl chloride polymerization. Background technique [0002] Graphene is considered as an ideal filler to enhance the performance of polymers due to its ultra-high mechanical strength, large specific surface area, and excellent electrical, thermal, and optical properties. Studies have shown that adding a small amount of graphene series materials can significantly improve some properties of traditional materials, such as electrical conductivity, thermal conductivity, photocatalytic properties, thermal stability, hardness, modulus, etc. Graphene-based polymer composites are a hot topic of research by experts at home and abroad, and are considered to be an important direction of graphene industrialization and have broad application prospects. However, the research on the performance of graphene-reinforced composites faces great chal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F114/06C08F2/44C08K9/04C08K3/04C09C1/46C09C3/08C09C3/10
Inventor 黄卫明赵立平洪江彬邱淑璇
Owner XIAMEN KNANO GRAPHENE TECH CORP
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