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Preparation method of graphene/nanometer silicon dioxide/polyvinyl chloride resin

A nano-silica, polyvinyl chloride resin technology, applied in the chemical industry, sustainable manufacturing/processing, climate sustainability, etc., can solve the problems of high cost of raw materials, large environmental pollution, unknown biological toxicity of resin, etc. The effect of good mechanical properties, good application properties and high thermal stability

Active Publication Date: 2021-10-08
HANGZHOU ELECTROCHEM GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Zhao Yonglu, Han Heliang, etc. reported "Development of Graphene / PVC In-Situ Polymerization Resin" (PVC, 2015, 43(9), 24-29), graphene (graphene oxide, chemical method) supported nano-calcium carbonate Graphene / PVC in-situ polymerization resin is prepared by in-situ polymerization, but the graphene used in this method is graphene oxide, and highly toxic compounds such as hydrazine hydrate need to be added, which causes great environmental pollution, high raw material cost, and the resulting resin is biologically unknown toxicity

Method used

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  • Preparation method of graphene/nanometer silicon dioxide/polyvinyl chloride resin
  • Preparation method of graphene/nanometer silicon dioxide/polyvinyl chloride resin
  • Preparation method of graphene/nanometer silicon dioxide/polyvinyl chloride resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1, a kind of aqueous phase microsuspension polymerization method containing 1‰ graphene / nanometer silicon dioxide / polyvinyl chloride resin, carries out following steps successively:

[0027] 1. Preparation of modified graphene / nano silica

[0028] Put 1000ml of deionized water, 5g of graphene (number of layers: 10-20 layers), 2g of sodium lauryl sulfate, 1g of silane coupling agent KH550, and 15g of nano-silicon dioxide in a 2000ml beaker, and heat up to 55°C. Put it into an ultrasonic processor, treat it at 800W for 7h, and take out the beaker. Pour the liquid in the beaker into a microwave reactor and treat it at 800W for 5h to obtain a graphene dispersion.

[0029] 2. Polymerization

[0030] In a 20L stainless steel polymerization kettle, add 10kg of deionized water, 6g of compound emulsifier (polyvinyl alcohol 2g, hydroxypropyl cellulose 1.5g, sodium lauryl sulfate 2g, nonylphenol polyoxyethylene ether 0.5g), Ammonium bicarbonate 0.5g, step 1) prepared...

Embodiment 2

[0034] A kind of aqueous phase micro-suspension polymerization method of polyvinyl chloride resin not containing graphene, carries out following steps successively:

[0035] 1. Polymerization

[0036] In a 20L stainless steel polymerization kettle, add 10kg of deionized water, 6g of compound emulsifier (polyvinyl alcohol 2g, hydroxypropyl cellulose 1.5g, sodium lauryl sulfate 2g, nonylphenol polyoxyethylene ether 0.5g), Ammonium bicarbonate 0.5g, ethanolamine 0.1g, peroxydicarbonate-2-ethylhexyl 10g, close the lid of the kettle, exhaust nitrogen 3 times, vacuumize to -0.98MPa, add vinyl chloride 5kg, at room temperature (25°C) Stir at high speed (300 rpm) for 30 minutes, then adjust to 180 rpm, heat up to 57°C and react for 2.5 to 4 hours. After the reaction is complete, add a terminator, centrifuge the slurry, and dry the solid to obtain graphene / polyvinyl chloride resin.

[0037] 2. Test results

[0038] Average particle size: 0.3μm, thermal stability (165°C, Congo red): 1...

Embodiment 3

[0040] A kind of aqueous phase suspension polymerization method of polyvinyl chloride resin not containing graphene, carries out following steps successively:

[0041] 1. Polymerization

[0042]In a 20L stainless steel polymerization kettle, add 10kg of deionized water, 6g of dispersant (3.7g of polyvinyl alcohol, 2.3g of hydroxypropyl cellulose), 0.5g of ammonium bicarbonate, and 10g of 2-ethylhexyl peroxydicarbonate , close the lid of the kettle, exhaust nitrogen 3 times, evacuate to -0.98MPa, add 5kg of vinyl chloride, stir at room temperature (25°C) at high speed (300 rpm) for 30min, then adjust to 180 rpm, and heat up to 57°C After 2.5-4 hours of reaction, when the reaction is completed, a terminator is added, the slurry is centrifuged, and the solid is taken and dried to obtain a graphene / polyvinyl chloride resin.

[0043] 2. Test results

[0044] Average particle size: 100μm, thermal stability (165°C, Congo red): 1 minute 8 seconds; tensile strength: 45.5MPa; elongati...

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Abstract

The application discloses a preparation method of graphene / nanometer silicon dioxide / polyvinyl chloride resin, comprising the preparation step of modified graphene / nanometer silicon dioxide, the preparation step of the modified graphene / nanometer silicon dioxide will be 1000 1 part of deionized water, 2-15 parts of graphene, 1-8 parts of emulsifier, 1-5 parts of silane coupling agent, 15-50 parts of nano silicon dioxide are mixed in a container, the temperature is raised to 55-80 °C, and the container Put it into an ultrasonic processor, treat it at 500-1000W for 3-7 hours, take out the container, pour the liquid in the container into a microwave reactor, and treat it at 500-1000W for 2-5 hours to obtain modified graphene / nano Silicon dioxide; the modified graphene / silica and vinyl chloride obtained by the method are finer in the graphene / nanometer silicon dioxide / polyvinyl chloride resin particles obtained through aqueous phase microsuspension polymerization, which improves the thermal stability of the resin properties and mechanical properties of the product.

Description

technical field [0001] The invention relates to the field, in particular to a preparation method of graphene / nanometer silicon dioxide / polyvinyl chloride resin. Background technique [0002] Polyvinyl chloride (PVC) is one of the five general-purpose plastics in the world. It has good mechanical properties, electrical properties, flame retardancy, chemical corrosion resistance and low price, but its poor thermal stability limits its use in outdoor, high-temperature and weather-resistant environments. under the application. Graphene has attracted widespread attention due to its unique two-dimensional sheet structure and excellent physical and mechanical properties. Using the excellent characteristics of graphene and other nanomaterials to endow PVC with excellent performance, it has become a high-end application field for polyvinyl chloride. one of the main means. [0003] CN201410398985.8 reports a kind of graphene / nano-calcium carbonate / vinyl chloride terpolymer resin in-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F114/06C08F2/44C08F2/20C08K9/06C08K7/00C08K3/04C08K3/36C08K3/26
CPCC08F114/06C08F2/44C08F2/20C08K9/06C08K7/00C08K3/042C08K3/36C08K2201/011Y02P20/10
Inventor 葛晴叶小明卢孔燎陈浙郑琪楼锦焕万波
Owner HANGZHOU ELECTROCHEM GROUP
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