Siloxane dispersant and nanoparticle paste composition comprising the same
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsJae Lee, Seong Choi, Eun Lee, Jae Choi
Life of this patent
Estimating the term…
Abstract
Provided is a siloxane dispersant having a structure including a head part having an affinity for nanoparticles and a tail part having an affinity for a polydimethylsiloxane (PDMS) resin, and a nanoparticle paste composition comprising the same. The dispersant significantly improves dispersion efficiency of a polydimethylsiloxane resin system which is used in preparation of high-output light sources such as UV LEDs and the like.
Claims15
A siloxane dispersant having a structure including a head part having affinity for nanoparticles and a tail part having affinity for a polydimethylsiloxane resin.
A silicone rubber, formed by dispersing nanoparticles in a polydimethylsiloxane resin using a dispersant having an amine-based, carboxylic acid based, mercaptan based, or phosphonic acid base head part, and a polydimethylsiloxane-based tail part, and adding a polydimethylsiloxane resin having an epoxy group to the resulting dispersion, followed by heat treatment.
A silicone rubber, comprising the heat-cured product of:
- nanoparticles,
- a dispersant having an amine-based, carboxylic acid based, mercaptan based, or phosphonic acid based head part, and a polydimethylsiloxane-based tail part, and
- a polydimethylsiloxane resin having an epoxy group, wherein the nanoparticles are homogeneously dispersed, and wherein the silicone rubber exhibits homogeneous photoluminescence.
A method of forming a silicone rubber, comprising:
- dispersing nanoparticles in a polydimethylsiloxane resin using a dispersant having an amine-based head part and a polydimethylsiloxane-based tail part,
- adding a polydimethylsiloxane resin having an epoxy group to the resulting dispersion, and
- Heat-treating the dispersion at a temperature of 70 to 150° C. for 0.5 to 12 hours.
Dependencies are inferred from the claim text.