Preparation of high-performance low-shrinkage hyperbranched polyamine-ester composite resin for dental restoration
A low-shrinkage dental and hyperbranched polymer technology, which is applied in the field of preparation of dental restoration materials, can solve the problems of reduced strength performance and low shrinkage, and achieve good mechanical properties and excellent mechanical strength.
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Embodiment 1
[0049] A preparation method of hyperbranched polyamine-ester composite resin for dental restoration with high performance and low shrinkage, the specific process is as follows:
[0050] (1) Preparation of silanized inorganic filler:
[0051] The silanized inorganic filler is prepared by surface modification of the inorganic filler. The specific modification treatment method is: add 50g of the inorganic filler to 600mL of cyclohexane, and the inorganic filler is micron silica (particle size 0.8μm) and nano-silica (particle size 20nm); then stirred and reacted in an oil bath at 20°C for 20min, and then added 5.5mL of n-propylamine and 3.3mL of γ-(methacryloyloxy)propyl Trimethyloxysilane, stirred and reacted at 70°C for 20min. During the reaction, the stirring speed was kept at 800r / min; Dry in a vacuum oven for 24 hours to obtain a silanized inorganic filler.
[0052] (2) Preparation of modified hyperbranched polyamine-ester:
[0053] (1) Mix trimethylolpropane, N,N-dihydrox...
Embodiment 2
[0064] A preparation method of hyperbranched polyamine-ester composite resin for dental restoration with high performance and low shrinkage, the specific process is as follows:
[0065] (1) Preparation of silanized inorganic filler:
[0066] The silanized inorganic filler is prepared by surface modification of the inorganic filler. The specific modification treatment method is: add 50g of the inorganic filler to 600mL of cyclohexane, and the inorganic filler is micron silica (particle size 1.2μm) and nano-silica (particle size: 40nm); then stirred and reacted in an oil bath at 30°C for 15min, and then added 5.5mL of n-propylamine and 3.3mL of γ-(methacryloyloxy)propyl Trimethyloxysilane, stirred and reacted at 60°C for 20min. During the reaction, the stirring speed was kept at 700r / min; Dry in a vacuum oven for 24 hours to obtain a silanized inorganic filler.
[0067] (2) Preparation of modified hyperbranched polyamine-ester:
[0068] (1) Mix trimethylolpropane, N,N-dihydro...
Embodiment 3
[0079] A preparation method of hyperbranched polyamine-ester composite resin for dental restoration with high performance and low shrinkage, the specific process is as follows:
[0080] (1) Preparation of silanized inorganic filler:
[0081] The silanized inorganic filler is prepared by surface modification of the inorganic filler. The specific modification treatment method is: add 50g of the inorganic filler to 600mL of cyclohexane, and the inorganic filler is micron silica (particle size 1μm) and nano-silica (particle size: 50nm); then stirred and reacted in an oil bath at 30°C for 10min, then added 5.5mL of n-propylamine and 3.3mL of γ-(methacryloyloxy)propyltri Methyloxysilane, stirred and reacted at 60°C for 30min. During the reaction, the stirring speed was kept at 600r / min; Dry in an oven for 24 hours to obtain a silanized inorganic filler.
[0082] (2) Preparation of modified hyperbranched polyamine-ester:
[0083] (1) Mix trimethylolpropane, N,N-dihydroxyethyl-3-am...
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