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Preparation method of silicon resin nanoparticle dispersion and silicon resin nanoparticle dispersion

A nanoparticle and silicone resin technology, which is applied in the field of silicone resin nanoparticle preparation, can solve the problems that did not mention the preparation of silicone resin nanoparticle

Active Publication Date: 2019-07-05
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the nanoprecipitation prepared by flash precipitation in this patent document is a

Method used

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  • Preparation method of silicon resin nanoparticle dispersion and silicon resin nanoparticle dispersion
  • Preparation method of silicon resin nanoparticle dispersion and silicon resin nanoparticle dispersion
  • Preparation method of silicon resin nanoparticle dispersion and silicon resin nanoparticle dispersion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] 344 mg of commercial vinyl polydimethylsiloxane was dissolved in 75.7 mL of tetrahydrofuran (THF) to form a tetrahydrofuran solution, and then 34.4 mg of a crosslinking agent was added to the tetrahydrofuran solution and mixed well. Then, put the tetrahydrofuran solution into a 100mL glass syringe, fix it on a syringe pump (Harvard Instruments PHD 2000), and connect it to the solvent inlet tube of the closed impact jet mixer used in the flash method. A second 100 mL glass syringe containing 75.7 mL of distilled water was secured in the same syringe pump and connected to the antisolvent inflow inlet of the closed impingement jet mixer used for the flash method. The syringe pump pumps the solutions of the two syringes into the closed impact jet mixer at a volume flow rate of 150mL / min, and the Reynolds number (Re=ρvd / μ, where v, ρ, μ are the flow rate, density and viscosity coefficient of the fluid respectively , d is the inlet flow diameter) is about 2000, the specific p...

Embodiment 2

[0112] 344 mg of commercial vinyl polydimethylsiloxane was dissolved in 75.7 mL of tetrahydrofuran (THF) to form a tetrahydrofuran solution, and then 34.4 mg of a cross-linking agent was added to the tetrahydrofuran solution and mixed well. Then, the tetrahydrofuran solution was filled into a 140mL polypropylene syringe (Monoject Model, Medtronic), and the syringe was fixed on a syringe pump (Harvard Instruments PHD 2000) and connected to the solvent flow of the closed impact jet mixer used in the flash method. inlet pipe. A second 140-mL polypropylene syringe containing 75.7 mL of distilled water was mounted in the same syringe pump and connected to the solution-resistant inlet of the closed impingement jet mixer used for the flash method. The syringe pump pumps the solutions of the two syringes into the closed impact jet mixer at a volume flow rate of 220mL / min, the Reynolds number (Re=ρvd / μ, where v, ρ, μ are the flow rate, density and viscosity of the fluid respectively C...

Embodiment 3

[0114] 1376 mg of commercial vinyl polydimethylsiloxane was dissolved in 75.7 mL of tetrahydrofuran (THF) to form a tetrahydrofuran solution, and then 137.6 mg of a crosslinking agent was added to the tetrahydrofuran solution and mixed well. Then, put the tetrahydrofuran solution into a 100mL glass syringe, fix it on a syringe pump (Harvard Instruments PHD 2000), and connect it to the solvent inlet tube of the closed impact jet mixer used in the flash method. A second 100 mL glass syringe containing 75.7 mL of distilled water was secured in the same syringe pump and connected to the antisolvent inflow inlet of the closed impingement jet mixer used for the flash method. The syringe pump pumps the solutions of the two syringes into the closed impact jet mixer at a volume flow rate of 150mL / min, and the Reynolds number (Re=ρvd / μ, where v, ρ, μ are the flow rate, density and viscosity coefficient of the fluid respectively , d is the inlet flow diameter) is about 2000, the specific...

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Abstract

Belonging to the technical field of preparation of silicon resin nanoparticles, the invention provides a preparation method of a silicon resin nanoparticle dispersion and a silicon resin nanoparticledispersion. The preparation method comprises the steps of: (1) dissolving hydrophobic silicone resin in a water-soluble organic solvent to obtain an organic solution; and (2) rapidly mixing the organic solution with a resistant solution, and then performing precipitation to obtain a silicon resin nanoparticle dispersion, wherein the rapid mixing is carried out under a Reynolds number of greater than 1600, and the silicon resin nanoparticles dispersed in the silicon resin nanoparticle dispersion has a particle size of 20nm-1500nm. The preparation method provided by the invention can realize rapid precipitation (with a Reynolds number of greater than 1600) of the silicon resin material dissolved in solvent flow to obtain silicon resin nanoparticles with uniformly distributed particle size.

Description

technical field [0001] The invention belongs to the technical field of preparing silicone resin nanoparticles, and in particular relates to a method for preparing a silicone resin nanoparticle dispersion and the silicone resin nanoparticle dispersion. Background technique [0002] Silicone resin was named in 1901, it is a kind of containing general formula R 1 R 2 Polymeric material of SiO. The unique properties of silicone resin include: extremely low glass transition temperature (-123°C), extremely low surface tension (20-21mN / m), good thermal stability, gas permeability and hydrophobicity. [0003] Because of these excellent properties, which can be improved by many chemical substances, silicone resins have been widely used in many fields. Industries using silicone resin include: in the food industry as a foam control agent and lubricating oil, etc.; in the paper industry as pulp cooking additives, defoamers, deinking, etc.; in the textile industry as lubricants, softe...

Claims

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Application Information

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IPC IPC(8): C08J3/14C08J3/12C08J3/09B82Y40/00C08L83/07
CPCB82Y40/00C08J3/095C08J3/122C08J3/14C08J2383/07
Inventor 张川李保耀
Owner WANHUA CHEM GRP CO LTD
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