Heat dissipation resin composition for LED substrate and preparation method thereof
A technology of resin composition and LED substrate, applied in the field of heat-dissipating resin composition, can solve problems such as the increase of working temperature of LED chips, and achieve the effects of improving lifespan and suppressing the increase of temperature
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Embodiment 1
[0044] A preparation method for a heat-dissipating resin composition for an LED substrate, comprising:
[0045] Step 1) prepare epoxy resin A,
[0046] Step 1.1) prepare the epoxy compound B of formula (II) structure,
[0047] Dissolve 4-hydroxybiphenyl in excess epichlorohydrin, add potassium hydroxide, the molar ratio of 4-hydroxybiphenyl to potassium hydroxide is 1.2, react at 100°C for 4 hours, and distill the unreacted ring under reduced pressure Oxychloropropane, the product of vacuum distillation is washed with distilled water, and dried to obtain epoxy compound A;
[0048]
[0049] Step 1.2), mix epoxy compound B, R-N(H)-R', R and R' connected to N are C2 alkyl and C4 linear alkyl respectively, react at 110°C for 2min, add epoxy resin CYD -128, stirred and mixed evenly, reacted for 10min, cooled to room temperature, extracted with toluene and dried in vacuum to obtain epoxy resin A;
[0050] Step 2), disperse 60% by mass of epoxy resin A in water, add 30% by mass...
Embodiment 2
[0052] A preparation method for a heat-dissipating resin composition for an LED substrate, comprising:
[0053] Step 1) prepare epoxy resin A,
[0054] Step 1.1) prepare the epoxy compound B of formula (II) structure,
[0055] Dissolve 4-hydroxybiphenyl in excess epichlorohydrin, add potassium hydroxide, the molar ratio of 4-hydroxybiphenyl to potassium hydroxide is 1.2, react at 100°C for 4 hours, and distill the unreacted ring under reduced pressure Oxychloropropane, the product of vacuum distillation is washed with distilled water, and dried to obtain epoxy compound A;
[0056]
[0057] Step 1.2), mix epoxy compound B, R-N(H)-R', R and R' connected to N are C3 straight-chain alkyl and C6 straight-chain alkyl respectively, react at 110°C for 3 minutes, add epoxy Resin CYD-128, stirred and mixed evenly, reacted for 13 minutes, cooled to room temperature, extracted with toluene and dried in vacuum to obtain epoxy resin A;
[0058] Step 2), disperse 70% by mass of epoxy r...
Embodiment 3
[0060] A preparation method for a heat-dissipating resin composition for an LED substrate, comprising:
[0061] Step 1) prepare epoxy resin A,
[0062] Step 1.1) prepare the epoxy compound B of formula (II) structure,
[0063] Dissolve 4-hydroxybiphenyl in excess epichlorohydrin, add potassium hydroxide, the molar ratio of 4-hydroxybiphenyl to potassium hydroxide is 1.1, react at 100°C for 4 hours, and distill the unreacted ring under reduced pressure Oxychloropropane, the product of vacuum distillation is washed with distilled water, and dried to obtain epoxy compound A;
[0064]
[0065] Step 1.2), mix epoxy compound B, R-N(H)-R', R and R' connected to N are C4 straight-chain alkyl and C6 straight-chain alkyl respectively, react at 110°C for 3 minutes, add epoxy Resin CYD-128, stirred and mixed evenly, reacted for 15 minutes, cooled to room temperature, extracted with toluene and dried in vacuum to obtain epoxy resin A;
[0066] Step 2), disperse 60% by mass of epoxy r...
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