Preparation method of degradable high-strength closed-cell polylactic acid foam material
The invention provides a preparation method of a degradable high-strength closed-cell polylactic acid foam material, and belongs to the technical field of high polymer materials. Comprising the following steps: A, preparing modified nano SiO2 particles grafted with acrylic acid; b, mechanically crus...
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| creator | ZHANG LEI YANG CHENGUANG GUO QINGSHI JIANG XIANGYANG SUN HUIQING |
| description | The invention provides a preparation method of a degradable high-strength closed-cell polylactic acid foam material, and belongs to the technical field of high polymer materials. Comprising the following steps: A, preparing modified nano SiO2 particles grafted with acrylic acid; b, mechanically crushing the toughening grade PLA resin particles; c, the refined PLA, thermoplastic starch and modified nano SiO2 particles are mechanically stirred and pre-dispersed in an ethanol solution according to the proportion of 20: 79: 1; d, putting the mixture pre-dispersed in the step C into a fuming cupboard for pumping, and then drying in a drying oven to obtain a mixed material; e, the mixed material obtained in the step D and a certain amount of dispersing agent are processed and granulated through double screws, a modified plate is prepared through a vulcanization forming machine, then the modified plate is placed in a limited foaming mold, the mold is placed in a high-pressure foaming reaction kettle to be subjected |
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| 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 |
| title | Preparation method of degradable high-strength closed-cell polylactic acid foam material |
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