Rigid particle/polyurethane flexible stab-resistant composite film as well as preparation method and application thereof

• Main Authors: WANG PING, ZHANG YAN, JI RUYI, LI YUANYUAN, SUN XUELIN
• Format: Patent
• Language: Chinese; English
• Published: 24.10.2023
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention relates to a rigid particle/polyurethane flexible stab-resistant composite film as well as a preparation method and application thereof. The preparation method comprises the following steps: S1, adding SiO2 or SiC powder and a silane coupling agent into a mixed solvent, adjusting the obtained mixed solution to be acidic, carrying out centrifugal separation on the mixed solution to obtain a solid phase, washing and drying to obtain modified SiO2 or SiC powder, and ultrasonically dispersing the modified SiO2 or SiC powder in an organic solvent to obtain a modified SiO2 or SiC dispersion liquid; s2, TPU is stirred and dissolved in an organic solvent, and a TPU solution is obtained; s3, stirring and mixing the modified SiO2 or SiC dispersion liquid obtained in the step S1 and the TPU solution obtained in the step S2, and transferring into a cell crusher for crushing and dispersing; and S4, transferring the mixed solution which is pulverized and dispersed by the cell crusher in the step S3 into a pol