The test result shows that Mohs' hardness of ma -trix phase of mineral polymer material is3.40~3.50,acid resistance is92.1%~93.1%and alkali resistance is99.9%.
The best molar ratio of TEOS to siloxane monomer was determined as 2:5. The hybrid material coating also exhibited good properties of acid-proof, salt water resistance, but had bad alkali-proof property.
Enhanced heat stability, acid resistance, alkali resistance, and anti-trypsin stability of the modified enzyme were observed compared with those of the unmodified enzyme.