2results about How to "Volume expansion" patented technology

This invention provides a type of glass and its preparation method, belonging to the field of glass technology. The glass batch comprises the following raw materials in parts by weight: 679-713 parts silica sand, 4-40 parts feldspar, 39-59 parts wollastonite, 129-154 parts dolomite, 42-55 parts limestone, 224-231 parts soda ash, 8-10 parts sodium sulfate, and 0.3-0.4 parts carbon powder. This invention can reduce CO2 emissions from float glass production, decrease bubble defects, and improve the quality of the finished glass.

The invention provides a surface modified cellulose fiber and a preparation method thereof, and the preparation method comprises the following steps: immersing cellulose fiber in an ionic solvent, and activating at an activation temperature of 40-60 DEG C for 10-30 min to obtain activated cellulose fiber; immersing the activated cellulose fibers into a vinyl ester modification reagent, and reacting at the reaction temperature of 40-60 DEG C for 1-3 hours to obtain grafted cellulose fibers; the grafted cellulose fiber is transferred into an anti-solvent to be fully washed and dried, the surface modified cellulose fiber is obtained, the surface modified cellulose fiber comprises a porous skin layer and a core layer from outside to inside, and a pore channel structure extending inwards from the surface is formed in the porous skin layer; hydroxyl of a cellulose molecular chain of the porous skin layer is grafted with acetyl, so that high-strength mechanical property retention and efficient functional grafting performance are achieved.