本文選題：新型光固化復(fù)合樹脂 + 耐磨性能��； 參考：《青島大學(xué)》2017年碩士論文

【摘要】：目的:探究含不飽和螺環(huán)原碳酸酯膨脹單體的新型牙科復(fù)合樹脂的耐磨性,結(jié)合摩擦磨損試驗后對試樣的微觀形貌分析進(jìn)行摩擦磨損機(jī)理研究,從而為研發(fā)低收縮、耐磨性良好的樹脂材料提供實驗依據(jù)。方法:以雙酚A雙甲基丙烯酸縮水甘油酯(Bis-GMA)為樹脂基質(zhì)單體,雙甲基丙烯酸二縮三乙二醇酯(TEGDMA)為稀釋單體,并以70/30(wt/wt)的比例配制成基體樹脂,以硅烷化處理后的Si O2微粉為無機(jī)填料,樟腦醌(CQ)/N,N-二甲胺基甲基丙烯酸乙酯(DMAEMA)(1wt%/2wt%)為光敏引發(fā)體系,以不加或加入3,9-二亞甲基-1,5,7,11-四氧螺[5,5]十一烷(BMSOC)分為組A和組B。引入新型高效的陽離子聚合光敏引發(fā)劑二苯基碘摀六氟磷酸鹽(DPIHFP),以CQ/DMAEMA/DPIHFP(1wt%/2wt%/2wt%)組成三元光敏引發(fā)體系,以不加或加入BMSOC分為組C和組D。兩種成品樹脂F(xiàn)iltek TMZ350和Clearfil AP-X為對照組。將以上材料(n=5)混勻后充填于直徑約10mm、高約6mm光固化樹脂圓柱體模具中。光固化之后放于37℃水浴24小時。用DCW-1磨耗機(jī)模擬體外三體磨耗實驗。樹脂試樣分別在經(jīng)200次,400次,600,800次循環(huán)磨耗后,稱重測量體積損失量、數(shù)顯千分表測量樹脂試樣表面的固定13個點(diǎn)的高度,取平均值作為高度損失量,磨耗最后用粗糙度儀測定試樣磨耗表面的粗糙度值。并在掃描電鏡下觀察磨耗后試樣表面形態(tài)。用單因素方差分析(ANOVA)和Tukey's test的方法對組間平均值進(jìn)行顯著性差異分析并進(jìn)行兩兩比較(P0.05)。用Pearson相關(guān)分析方法對高度磨耗量和體積損失量及兩者與粗糙度之間進(jìn)行相關(guān)性評價(P0.01)。結(jié)果:隨磨耗次數(shù)的不斷增加,各組樹脂的磨耗量也隨之增加。Filtek TMZ350的體積損失量最少,為(14.5571±1.5059)mm3;組B磨耗最多,為(79.7713±3.0986)mm3;其中二元光引發(fā)體系下的組A和組B間、三元光引發(fā)體系下的組C和組D之間的體積磨損量和高度磨損量沒有統(tǒng)計學(xué)差異(P0.05)。磨耗后樹脂表面粗糙度值范圍是0.51μm~0.93μm。體積損失量與粗糙度之間沒有相關(guān)性(r=-0.083)。掃描電鏡下Filtek TMZ350和Clearfil AP-X的磨耗表面較光滑,其它組的樹脂磨耗后表面較粗糙,其中三元光引發(fā)體系下的樹脂磨耗表面較二元光引發(fā)體系致密。結(jié)論:1.在本實驗膨脹單體的添加比例是Bis-GMA/(epoxy+SOC)為40/60的條件下,膨脹單體的加入并不能影響樹脂材料的耐磨性。2.以陽離子引發(fā)劑二苯基碘摀六氟磷酸鹽、CQ和DMAEMA組成的三元光引發(fā)體作為引發(fā)劑,可使實驗中混雜樹脂體系的耐磨性得到明顯的提高。
[Abstract]:Objective: to study the wear resistance of a new dental composite resin containing unsaturated spirocyclic carbonate expansion monomer, and to study the friction and wear mechanism of the sample after friction and wear test, so as to develop low shrinkage. Good wear resistance of resin materials to provide experimental basis. Methods: bisphenol A bis-glycidyl dimethacrylate (Bis-GMA) was used as resin matrix monomer, triethylene glycol dimethacrylate (TEGDMA) was used as diluent monomer, and the matrix resin was prepared at the ratio of 70 / 30 t / WTT / wt. The silanized Sio _ 2 micropowder was used as inorganic filler, and camphor quinone (CQ) / N (N-dimethylaminoethyl methylaminoethyl methacrylate) (DMAEMAA) was used as the initiation system of Guang Min. The system was divided into two groups: group A and group B without or without addition of 3 ~ (9) -dimethylene-1-trimethylidene-5711-tetraoxomethoxonium (BMSOC). A novel cationic polymeric Guang Min initiator, diphenyl iodide hexafluorophosphate (DPIHFPN), was introduced to form a ternary Guang Min initiation system using CQ / DMAEMA / DPIHFPA / DPIHFPN 1 wt / 2 wtand / 2 wtcm. The initiators were divided into group C and group D without adding or adding BMSOC. Two kinds of finished resin Filtek TMZ350 and Clearfil AP-X were used as control group. The above materials are mixed and filled in the 6mm resin cylinder mould with a diameter of about 10 mm and a high diameter of about 10 mm. After light curing, put in water bath at 37 鈩，

本文編號：1914121