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Method for improving powder falling of dental gypsum
The invention discloses a method for improving powder falling of dental gypsum. The method comprises the following steps: S100, preparing a base material: taking natural dihydrate gypsum powder, producing through a liquid phase method process, and carrying out ball milling to prepare semi-hydrated high-strength gypsum powder; S200, weighing and preparing a base material and an additive: taking 100 parts of the prepared semi-hydrated high-strength gypsum powder, 0.001-1 part of a reinforcing agent, 0.001-0.5 part of a retarder, 0-1 part of a pigment, 0.01-1 part of a toughening agent, 0.01-1 part of a defoaming agent and 0-1 part of an expansion inhibiting agent for later use; and S300, performing dry-process mixing preparation: stirring and mixing the semi-hydrated high-strength gypsum powder, the reinforcing agent, the retarder, the pigment, the flexibilizer, the defoaming agent and the swelling inhibitor in proportion. The method has the beneficial effects that under the synergistic effect of all the components, the surface strength of the dental gypsum is improved, and powder falling during demolding of the dental gypsum and a film printing material is avoided. The toughness of the dental gypsum is also improved, and the defects that the gypsum is crisp and is not easy to repair when a dental gypsum model is repaired are overcome. The dental gypsum is low in price, excellent in performance and good in clinical application effect.
本发明公开了一种可改善牙科石膏掉粉的方法，包括以下步骤：S100，制取基料：取天然二水石膏粉，通过液相法工艺生产并经球磨制成半水高强石膏粉。S200，称量准备好基料及外加剂：取制得的半水高强石膏粉100份、增强剂0.001‑1份、缓凝剂0.001‑0.5份、颜料0‑1份、增韧剂0.01‑1份、去泡剂0.01‑1份及抑制膨胀剂0‑1份备用。S300，干法混合配制：将半水高强石膏粉、增强剂、缓凝剂、颜料、增韧剂、去泡剂及抑制膨胀剂按比例一起搅拌混合。本发明的有益效果：在各组分的协同作用下，提高了牙科石膏表面强度，避免了牙科石膏与印膜材脱模时出现掉粉。还增加了牙科石膏的韧性，改善了牙科石膏模型在修模时石膏发脆，不易修模的缺点。价格便宜，牙科石膏性能优良，临床应用效果好。
Method for improving powder falling of dental gypsum
The invention discloses a method for improving powder falling of dental gypsum. The method comprises the following steps: S100, preparing a base material: taking natural dihydrate gypsum powder, producing through a liquid phase method process, and carrying out ball milling to prepare semi-hydrated high-strength gypsum powder; S200, weighing and preparing a base material and an additive: taking 100 parts of the prepared semi-hydrated high-strength gypsum powder, 0.001-1 part of a reinforcing agent, 0.001-0.5 part of a retarder, 0-1 part of a pigment, 0.01-1 part of a toughening agent, 0.01-1 part of a defoaming agent and 0-1 part of an expansion inhibiting agent for later use; and S300, performing dry-process mixing preparation: stirring and mixing the semi-hydrated high-strength gypsum powder, the reinforcing agent, the retarder, the pigment, the flexibilizer, the defoaming agent and the swelling inhibitor in proportion. The method has the beneficial effects that under the synergistic effect of all the components, the surface strength of the dental gypsum is improved, and powder falling during demolding of the dental gypsum and a film printing material is avoided. The toughness of the dental gypsum is also improved, and the defects that the gypsum is crisp and is not easy to repair when a dental gypsum model is repaired are overcome. The dental gypsum is low in price, excellent in performance and good in clinical application effect.
本发明公开了一种可改善牙科石膏掉粉的方法，包括以下步骤：S100，制取基料：取天然二水石膏粉，通过液相法工艺生产并经球磨制成半水高强石膏粉。S200，称量准备好基料及外加剂：取制得的半水高强石膏粉100份、增强剂0.001‑1份、缓凝剂0.001‑0.5份、颜料0‑1份、增韧剂0.01‑1份、去泡剂0.01‑1份及抑制膨胀剂0‑1份备用。S300，干法混合配制：将半水高强石膏粉、增强剂、缓凝剂、颜料、增韧剂、去泡剂及抑制膨胀剂按比例一起搅拌混合。本发明的有益效果：在各组分的协同作用下，提高了牙科石膏表面强度，避免了牙科石膏与印膜材脱模时出现掉粉。还增加了牙科石膏的韧性，改善了牙科石膏模型在修模时石膏发脆，不易修模的缺点。价格便宜，牙科石膏性能优良，临床应用效果好。
Method for improving powder falling of dental gypsum
可改善牙科石膏掉粉的方法
WANG WENZHONG (author) / XU LUBING (author) / WEN SIJIE (author)
2021-11-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Fluorine gypsum powder, preparation method and prepared gypsum block
| European Patent Office | 2021