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A preparation method of silicone resin nanoparticle dispersion and silicone resin nanoparticle dispersion

A nanoparticle and silicone resin technology, applied in the field of silicone resin nanoparticle preparation, can solve the problem of not mentioning the preparation of silicone resin nanoparticles, etc., and achieve the effect of stable properties

Active Publication Date: 2021-10-22
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nanoprecipitation prepared by flash precipitation in this patent document is a kind of micelles, and there is no mention of the preparation of silicone resin nanoparticles

Method used

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  • A preparation method of silicone resin nanoparticle dispersion and silicone resin nanoparticle dispersion
  • A preparation method of silicone resin nanoparticle dispersion and silicone resin nanoparticle dispersion
  • A preparation method of silicone resin nanoparticle dispersion and silicone 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 mounted 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, 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 param...

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 crosslinking 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 ...

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 mounted 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, 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 par...

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Abstract

The invention belongs to the technical field of silicone resin nanoparticle preparation, and provides a preparation method of a silicone resin nanoparticle dispersion and a silicone resin nanoparticle dispersion; the preparation method includes the following steps: (1) dissolving a hydrophobic silicone resin in a water-soluble (2) After the organic solution and the anti-solution are mixed rapidly, the silicone resin nanoparticle dispersion is obtained by precipitation; the rapid mixing is to make the mixing system operate at a Reynolds number > 1600 . The particle size of the silicone resin nanoparticles distributed in the silicone resin nanoparticle dispersion is 20nm-1500nm. The preparation method of the invention can realize rapid (Reynolds number>1600) precipitation of the silicone resin material dissolved in the solvent flow, and obtain silicone resin nanoparticles with uniform particle size distribution.

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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Patent Type & Authority Patents(China)
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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