▎ 摘　　要

NOVELTY - Modifying methyl phenyl silicone resin comprises preparing graphene oxide; adding graphene oxide and long chain aliphatic hydrocarbon in solvent to completely dissolve; sequentially performing centrifugal separation and freeze drying to obtain a powder-shaped solid; adding obtained powder-shaped solid in a methyl phenyl silicone resin solution; and using step-by-step curing method to cure to obtain modified methyl phenyl silicone resin. The method includes uniformly mixing strong acid with nitrate and graphite powder, and stirring for 10-20 minutes under stirring speed. USE - Method for modifying methyl phenyl silicone resin (claimed). ADVANTAGE - The method solves the problem of high modification method cost and problem that conventional methyl phenyl silicone resin does not fit for large modernized industrial production. The method has widely available raw material, rich storage, low cost, large scale production, and zero environment pollution, and improves 20-30% heat resistance methyl phenyl silicone resin. DETAILED DESCRIPTION - Modifying methyl phenyl silicone resin comprises preparing graphene oxide; adding graphene oxide and long chain aliphatic hydrocarbon in solvent to completely dissolve; sequentially performing centrifugal separation and freeze drying to obtain a powder-shaped solid; adding obtained powder-shaped solid in a methyl phenyl silicone resin solution; and using step-by-step curing method to cure to obtain modified methyl phenyl silicone resin. The method includes: (A) uniformly mixing strong acid with nitrate and graphite powder, and stirring for 10-20 minutes under stirring speed of 80-120 revolutions/minute (rpm); (B) adding strong oxidant, reacting for 6-10 hours at 0-20 degrees C and stirring speed at 80-120 rpm to obtain mixture A; (C) putting obtained mixture A in 35-40 degrees C constant temperature water bath, and stirring for 2-4 hours at 80-120 rpm; (D) adding distilled water, heating to 90-95 degrees C, reacting for 40-80 minutes at 90-95 degrees C and stirring speed of 80-120 rpm; (E) adding hydrogen peroxide, continuously reacting for 20-40 minutes at 90-95 degrees C, and stirring at 80-120 rpm to obtain mixture B; (F) separating mixture B through filtering, cleaning filtering slag obtained by separating for 6-8 times through 8-10% hydrochloric acid; (G) using a distilled water to clean for 3-4 times, drying at 40-70 degrees C to constant weight to and obtain processed graphite; (H) putting obtained graphite in step 3 in distilled water, ultrasonically vibrating for 5-10 hours under frequency of 25-45 KHz; (I) using 300-400 meshes gauze to filter; (J) separating filtrate obtained by filtering at a high speed centrifugal machine in speed of 800-1200rpm; (K) freezing and drying upper layer clear liquid at - 10-(- 5) degrees C to obtain graphene oxide; (L) freezing and drying solid obtained by centrifuging and separating at - 10-(- 5) degrees C for 18-24 hours to obtain powder-shaped solid; (M) adding obtained powder-shaped solid into methyl phenyl silicone resin solution; and (N) reacting for 4-6 hours at - 10-(- 5) degrees C, and using step-by-step method to cure to obtain modified methyl phenyl silicone resin. Mass ratio of graphite powder to strong acid is 1:23-27. The mass ratio of graphite powder to nitrate is 1:0.3-0.7. Mass ratio of graphite powder to strong oxidant is 1: 2-4. Mass ratio of distilled water to graphite powder is 1-3:1. Mass concentration of hydrogen peroxide is 20-40%. Mass ratio of graphite to distilled water is 1:45-55. Mass ratio of graphene oxide to methyl phenyl silicone resin is 0.02-0.05:1. Mass ratio of graphene oxide to long chain aliphatic hydrocarbon is 1:8.