Organic silicone resin molding compound and preparation method thereof
A silicone and resin mold technology, applied in the field of silicone resin molding compound and its preparation, can solve the problems of complex molding process, easy stress cracking and low mechanical strength of the molding compound, and achieve low cost, reduced defects and excellent mechanical properties Effect
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Embodiment 1
[0031] A preparation method of silicone resin molding compound, comprising the following steps:
[0032] (1) First, 20 parts of quartz powder / nano silica mixture (the ratio of quartz powder and nano silica in the quartz powder / nanometer silica mixture is 20 / 1), 0.5 parts of silicone rubber particles and 15 parts of glass Mix the fibers evenly to form a mixed filler. Preheat 60 parts of silicone resin to a molten state in an open mill at a temperature of 80°C; the particle size of quartz powder is 6000 mesh, the particle size of nano-silica is 20nm, and The length is 6mm
[0033] (2) The above-mentioned mixed filler was added into the molten silicone resin in 3 times for physical blending, the mixing time was 30 minutes, and the roll speed of the mill was 50 rpm;
[0034] (3) After mixing the mixed filler and silicone resin in step (2) evenly, add 2.50 parts of catalyst, 0.1 part of demoulding machine and pigment, etc., and physically blend for 15 minutes; the pigment is a con...
Embodiment 2
[0039] A preparation method of silicone resin molding compound, comprising the following steps:
[0040] (1) First, 60 parts of quartz powder / nano-silica mixture (the ratio of quartz powder and nano-silica in the quartz powder / nano-silica mixture is 5 / 1), 3 parts of silicone rubber particles and 35 parts of glass Mix the fibers evenly to form a mixed filler. Preheat 15 parts of silicone resin to a molten state in an open mill at a temperature of 85°C; the particle size of quartz powder is 200 mesh, the particle size of nano-silica is 100nm, and the The length is 3mm
[0041] (2) Add the above-mentioned mixed filler into the molten silicone resin in 6 times for physical blending, the mixing time is 20 minutes, and the roll speed of the mill is 200rpm;
[0042] (3) After mixing the mixed filler in step (2) with the silicone resin evenly, add 0.01 part of catalyst, 5.0 parts of demoulding machine and pigment, etc., and physically blend for 5 minutes; the pigment is a conventiona...
Embodiment 3
[0047] A preparation method of silicone resin molding compound, comprising the following steps:
[0048](1) First, 55 parts of quartz powder / nanometer silicon dioxide mixture (38 parts of quartz powder in the quartz powder / nanometer silicon dioxide mixture, 11 parts of 1200 mesh, 38 parts of / 6000 mesh, 6 parts of nanometer silicon dioxide, 20nm ), 5 parts of silicone rubber particles and 22 parts of glass fiber are uniformly mixed to form a mixed filler, and 26 parts of silicone resin, methyl phenyl silicone resin is preheated to a molten state in an open mixer, and the temperature is 80-85 °C; the glass fiber The length is 3mm;
[0049] (2) Add the above-mentioned mixed filler into the molten silicone resin in 3 times for physical blending, the mixing time is 30 minutes, and the roll speed of the mill is 100rpm;
[0050] (3) After mixing the mixed filler and silicone resin in step (2) evenly, add 0.01 part of catalyst, 0.1 part of demoulding machine and pigment, etc., and p...
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Abstract
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