Glass fiber-nano-scaled hydroxyapatite-polylactic acid ternary composite and preparation method thereof
A technology of nano-hydroxyapatite and hydroxyethyl apatite is applied in the field of glass fiber-nano-hydroxyapatite-polylactic acid ternary composite material and its preparation, and can solve the problem of reduced impact performance, application limitation, mechanical strength Insufficient and other problems, to achieve the effect of reducing impact strength, enhancing tensile and bending properties, and good biocompatibility
Active Publication Date: 2017-09-01
THE UNIV OF NOTTINGHAM NINGBO CHINA
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Problems solved by technology
However, due to its insufficient mechanical strength, its application is quite limited.
At present, there have been many studies on the application of nano-apatite to polylactic acid. However, although the tensile and bending properties have been improved, its impact properties have been reduced.
[0003] Glass fiber is widely used in composite materials and can significantly improve the comprehensive performance of polymer materials. However, there are no related reports on adding nano-hydroxyapatite-polylactic acid materials in the form of sheets.
Method used
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Embodiment 1
[0043] (1) Preparation of the same direction glass fiber sheet:
[0044] 1.1) dissolving a small amount of polylactic acid in chloroform as a glass fiber sheet binder;
[0045] 1.2) Wrap long glass fiber strands (containing various oxides) with a length of more than 50cm on a paper tube, and apply polylactic acid solution for bonding;
[0046] 1.3) Dry the glass fibers together with the paper tube at a temperature of 40 degrees Celsius for 72 hours;
[0047] 1.4) Take out the paper tube, cut the glass fiber into the required size, and obtain the same-direction glass fiber sheet;
[0048] (2) Preparation of nano-hydroxyethylapatite-polylactic acid material
[0049] 2.1) Take the chloroform solution and place it in a beaker, and the amount of chloroform is 12 times that of the nano polylactic acid material sheet;
[0050] 2.2) Accurately weigh the required mass of nano-hydroxyethylapatite with a four-position balance, and the dosage is 4% of the mass fraction of the ternary c...
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The invention discloses a glass fiber-nano-scaled hydroxyapatite-polylactic acid ternary composite and a preparation method thereof. The composite is mainly formed by stacking and laminating a synclastic glass fiber sheet, nano-scaled hydroxyapatite and polylactic acid; the mass of the synclastic glass fiber sheet is 10 to 20 percent; the mass of the nano-scaled hydroxyapatite is 2 to 5 percent; the polylactic acid is for the surplus. The preparation method comprises the following steps: coiling and adhering glass fiber tows to a paper tube, and taking down the paper tube, so as to obtain the synclastic glass fiber sheet; adding dispersive nano-scaled hydroxyapatite into chloroform; pouring polylactic acid particles into chloroform solution containing the hydroxyapatite; and pouring the chloroform solution into a die, leaving the die to stand, so as to obtain a nanometer material sheet; stacking the nanometer material sheet and the synclastic glass fiber sheet into a multi-layer material, and then performing compression molding. The composite is applied to biomedical treatment, both hydroxyapatite and the polylactic acid have high biological compatibility, the mechanical property of the ternary composite is effectively enhanced through the synclastic glass fiber sheet, and the composite has a huge biomedical treatment application prospect.
Description
technical field [0001] The invention relates to a composite material and a preparation method thereof, in particular to a glass fiber-nanometer hydroxyapatite-polylactic acid ternary composite material and a preparation method thereof. Background technique [0002] Due to its easy molding and good biocompatibility, polylactic acid has been widely studied in the field of biomedicine. However, due to its insufficient mechanical strength, its application is quite limited. At present, there have been many studies on the application of nano-apatite to polylactic acid. However, although the tensile and bending properties have been improved, its impact properties are even lower. [0003] Glass fibers are widely used in composite materials and can significantly improve the comprehensive performance of polymer materials. However, there are no related reports on adding nano-hydroxyapatite-polylactic acid materials in the form of sheets. Contents of the invention [0004] Aiming at...
Claims
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Login to View More IPC IPC(8): C08L67/04C08K7/14C08K3/32
CPCC08K3/32C08K7/14C08K2003/325C08K2201/011C08L67/04
Inventor 夏娜顾复冯增兴
Owner THE UNIV OF NOTTINGHAM NINGBO CHINA