2results about How to "Reduced linear shrinkage" patented technology

The invention relates to a high-performance glass microsphere thermal insulation mortar and its preparation method and use, wherein the thermal insulation mortar includes microcapsule phase change paraffin as a thermal insulation component, a highly concentrated silicone hydrophobic agent as a waterproof component, a zinc borate flame retardant as a flame retardant component, and basalt fiber as an anti-cracking component. The high-performance glass microsphere thermal insulation mortar obtained by the present invention has a linear shrinkage of less than or equal to 0.297%, a thermal conductivity of less than or equal to 0.0458W / (mK), and a continuous burning time of less than or equal to 23.85s. The thermal insulation mortar of the present invention can meet the requirements of flame retardancy, thermal insulation, hydrophobicity, and crack resistance of thermal insulation materials for the exterior walls of residential buildings under severe cold, cold, and hot summer and cold winter climate conditions.

The reinforcing filler in the dental resin cement composition provided by the present invention has a particle size distribution that simultaneously satisfies D75-D25≤0.95μm, D25-D15≤0.7μm, and D50 of 0.5~1.0μm. Specifically, the present invention improves the chemical curing time, edge sealing, and linear shrinkage rate of dental resin cement by controlling the D15 / D25 / D75 and D50 of the reinforcing filler in the matrix and catalytic portions to have the above-mentioned specific numerical relationships.