Unlock instant, AI-driven research and patent intelligence for your innovation.

A preparation method of ha-based composite resin with low filling amount and highly ordered arrangement

A technology of composite resin and low filling content, applied in the field of bionic functional dental restoration materials, can solve the problems of micropores or voids, formation of mechanical defects, easy mutual agglomeration, etc., to achieve reduced filling volume, excellent bending strength, and simple process Effect

Active Publication Date: 2022-04-29
DONGHUA UNIV
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the filling content of nano-hydroxyapatite is high, it is easy to agglomerate with each other, and micropores or voids will be generated inside, forming mechanical defects and resulting in a significant decrease in performance.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A preparation method of ha-based composite resin with low filling amount and highly ordered arrangement
  • A preparation method of ha-based composite resin with low filling amount and highly ordered arrangement
  • A preparation method of ha-based composite resin with low filling amount and highly ordered arrangement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A preparation method of HA-based composite resin with low filling amount and highly ordered arrangement, the specific steps are as follows:

[0047] (1) Preparation of nano-hydroxyapatite (silanized nano-hydroxyapatite);

[0048] Hydroxyapatite nanorods (with a one-dimensional size of 40 nm and an aspect ratio of 15) with a mass ratio of 5:0.2:0.8, n-propylamine and γ-methacryloxypropyltrimethoxysilane were added to the ring In hexane, the ratio of hydroxyapatite nanorods to cyclohexane is 5g:100mL, then react at 23°C for 30min, stir at 60°C for 40min, and rotate to evaporate (the temperature of rotary evaporation is 50°C, and the time is 40min ) after removing the solvent, dry in a vacuum oven at 60°C for 24 hours to obtain silylated nano-hydroxyapatite;

[0049] (2) Preparation of low-filling HA-based composite resin slurry;

[0050] According to the mass ratio of 1:95, nano-hydroxyapatite is uniformly dispersed in ethanol, and then mixed with methacrylate organic m...

Embodiment 2

[0055] A preparation method of HA-based composite resin with low filling amount and highly ordered arrangement, the specific steps are as follows:

[0056] (1) Preparation of nano-hydroxyapatite (silanized nano-hydroxyapatite);

[0057] Hydroxyapatite nanorods (with a one-dimensional size of 44 nm and an aspect ratio of 20) with a mass ratio of 5:0.2:0.85, di-n-propylamine and organosilane allyltriethoxysilane were added to cyclohexane , the ratio of hydroxyapatite nanorods to cyclohexane is 5g:105mL, then react at 24°C for 30min, stir at 60°C for 40min, and remove the solvent by rotary evaporation (the temperature of rotary evaporation is 54°C and the time is 38min) Finally, dry in a vacuum oven at 60°C for 24 hours to obtain silylated nano-hydroxyapatite;

[0058] (2) Preparation of low-filling HA-based composite resin slurry;

[0059] According to the mass ratio of 2:96, nano-hydroxyapatite is uniformly dispersed in ethanol, and then mixed with methacrylate organic matrix...

Embodiment 3

[0064] A preparation method of HA-based composite resin with low filling amount and highly ordered arrangement, the specific steps are as follows:

[0065] (1) Preparation of nano-hydroxyapatite (silanized nano-hydroxyapatite);

[0066] Hydroxyapatite nanorods with a mass ratio of 5:0.2:0.9 (one-dimensional size of 48 nm, aspect ratio of 25), tri-n-propylamine and γ-methacryloxypropyltrimethoxysilane were added to the In cyclohexane, the ratio of hydroxyapatite nanorods to cyclohexane is 5g:110mL, then react at 25°C for 30min, stir at 60°C for 40min, and rotate to evaporate (the temperature of rotary evaporation is 58°C, and the time is 36min) after removing the solvent, dry in a vacuum oven at 60°C for 24h to obtain silylated nano-hydroxyapatite;

[0067] (2) Preparation of low-filling HA-based composite resin slurry;

[0068]According to the mass ratio of 3:97, nano-hydroxyapatite is uniformly dispersed in ethanol, and then mixed with methacrylate organic matrix and photoi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
bending strengthaaaaaaaaaa
flexural modulusaaaaaaaaaa
compressive strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for preparing HA-based composite resins with low filling content and highly ordered arrangement. The low-filling HA-based composite resin slurry is 3D printed, and the printed product is formed by light curing to obtain a low-filling product. HA-based composite resin with highly ordered arrangement; the mass proportion of nano-hydroxyapatite in the low-filling HA-based composite resin slurry is 10-30%; the preparation method of the low-filling HA-based composite resin slurry is as follows: Evenly disperse nano-hydroxyapatite into ethanol, mix and stir evenly with methacrylate organic matrix and photoinitiator, and remove ethanol by rotary evaporation to obtain low-filling HA-based composite resin slurry; the pressure of rotary evaporation is 20~ 30mbar; during 3D printing, the printing lines are parallel and linear; the flexural strength of the HA-based composite resin is 120-150MPa, the flexural modulus is 10-12GPa, and the compressive strength is 380-420MPa; Under the premise of mechanical properties, the filling amount of nano-hydroxyapatite is significantly reduced.

Description

technical field [0001] The invention belongs to the technical field of bionic functional dental restoration materials, and relates to a preparation method of HA-based composite resin with low filling amount and highly ordered arrangement. Background technique [0002] Human dental hard tissue is mainly composed of four layers: enamel, dentin, cementum and dental pulp. Among them, enamel is the hard tissue of tooth calcification, which has a tight and orderly arrangement structure of hydroxyapatite (HA) nanocrystals. Meet its required mechanical strength and toughness and other properties. Some researchers simulated the structure of enamel and developed a bottom-up step-by-step assembly method to construct enamel-mimicking structural materials based on ultra-long HA nanowires, but their mechanical strength still cannot match that of natural teeth (Chemical Engineering Journal , 2019, 360:1633-1645.). [0003] Inorganic fillers are an important part of dental restoration res...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A61L27/42A61L27/50A61L27/16B82Y40/00B82Y30/00B33Y80/00B33Y70/10B33Y10/00
CPCA61L27/425A61L27/50A61L27/16B82Y40/00B82Y30/00B33Y80/00B33Y70/10B33Y10/00A61L2430/12A61L2400/12C08L35/02
Inventor 张耀鹏赵梦露姚响朱美芳
Owner DONGHUA UNIV