酸催化酚醛树脂 OH H T chO OH OH OH H CH SI-CH H 聚硅氧烷 CH 3 CH3 Cl-Si-Cl HO-Si-O-H -HCI CH 3酸催化酚醛树脂 聚硅氧烷 OH H H CH2 O H + OH OH CH2 H OH H CH2 + Cl Si Cl CH3 CH3 H2 O HCl HO Si O H CH3 CH3 n