对叔丁基酚缩水甘油醚作为稀释剂紫外光固化材料的制备及性能

以对叔丁基酚缩水甘油醚(JX-012)、双酚A型环氧树脂(E-618)、聚己内酯二元醇(Polyol0201)和三芳基锍鎓六氟锑酸盐(UVI-6976)作为原料制备了一种阳离子型紫外光固化材料。利用测定凝胶率的方法对其紫外光固化材料的光敏性进行了研究。同时,对该紫外光固化材料的光固化膜的拉伸性能、冲击强度和铅笔硬度等进行了分析。实验结果表明:在E-618质量分数65%、JX-012质量分数21%、Polyol-0201质量分数10%和UVI-6976质量分数4%时,所制备的紫外光固化材料,其紫外光光固化膜的拉伸强度、断裂伸长率、冲击强度和铅笔硬度分别为25.2 MPa、6.59%、50 kg·cm和2 H以上。 更多还原     

一种高性能紫外光固化涂料的制备与性能

实验以酚醛环氧树脂(F-51)、邻甲酚缩水甘油醚(JX-017)、丙三醇三缩水甘油醚(662)和三芳基锍鎓六氟锑酸盐(UV-6976)作为原料制备了一种阳离子型紫外光固化涂料。并对该紫外光固化涂料的光固化膜的冲击强度、铅笔硬度、拉伸性能和断裂伸长率进行了分析。实验结果表明:当涂料中酚醛环氧树脂(F-51)质量分数为60%、阳离子引发剂三芳基硫鎓氟锑酸盐(UV-6976)质量分数为5%、邻甲酚缩水甘油醚(JX-017)质量分数为20%和丙三醇三缩水甘油醚(662)质量分数为15%时,所制备的紫外光固化涂料综合性能最佳,其紫外光光固化膜的拉伸强度为23.15 MPa,冲击强度为48 kg·cm,断裂伸长率为10.65%以及铅笔硬度为6 H。     

纳米二氧化硅对聚氨酯丙烯酸酯紫外光固化材料性能影响

用硅烷偶联剂γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH-570)对纳米二氧化硅进行了表面改性,并将其填充到聚氨酯丙烯酸酯紫外光固化材料中。扫描电镜(SEM)观察表明:适量KH-570改性的纳米二氧化硅在聚氨酯丙烯酸酯中分散性好。对含有不同质量分数改性纳米二氧化硅粒子的聚氨酯丙烯酸酯紫外光固化材料的固化膜进行了柔韧性、铅笔硬度、拉伸强度、拉伸断裂伸长率和抗冲击强度测定,结果表明:当KH-570改性的纳米二氧化硅质量分数为4%时,固化膜的拉伸强度达到6.68 MPa,拉伸断裂伸长率为11.88%,抗冲击强度为50 kg·cm。 更多还原     

紫外光固化光纤保护涂料的增韧性研究

环氧丙烯酸酯作为紫外光(UV)固化光纤保护涂料的活性低聚物,其固化膜硬度高,性能优良,但脆性也限制了它的应用.本文在涂料研制过程中加入一定量的聚氨酯丙烯酸酯(PUA),对双酚A环氧丙烯酸酯(ERA)低聚物进行增韧改性.测试结果表明,当加入10%聚氨酯丙烯酸酯(PUA)时,固化膜的柔韧性、拉伸强度较好,其涂料具有优良的折射率和各种力学性能.     

丙烯酰化环氧大豆油光敏涂料的研究

由于光敏涂料具有固化速度快、节省能量和无污染等优点,因此在现代涂料工业中占有重要位置。本文对环氧大豆油(ESBO)新型紫外光固化涂料进行了研究,并讨论了光敏涂料的优化配方、光固化工艺以及固化膜的动态粘弹行为。研究结果表明:谊光敏涂料具有固化速度快、表面硬度高、柔韧性好等优点,可用作金属和木制品的保护性涂层。     

PVL-PEG-PVL水凝胶紫外光固化动力学研究

为了制备PVL-PEG-PVL水凝胶,并研究其紫外光固化动力学,本文采用熔融聚合法制备了PVL-PEG-PVL三嵌段共聚物,利用丙烯酰氯(AC)修饰并以2,2-二甲氧基-2-苯基苯乙酮(DMPA)为引发剂在紫外光辐射下制备PVL-PEG-PVL水凝胶。采用红外光谱(FTIR)、扫描电镜(SEM)和万能试验机对水凝胶的结构和力学性能进行表征和测试,研究水凝胶紫外光固化动力学。实验结果表明:当凝胶前体浓度为0.06 g·mL~(-1)、光引发剂含量为单体质量分数的0.5%、紫外灯工作电流为14 A时,凝胶的固化速率最快,11 min内交联度可达到93%。此条件下制备的凝胶力学强度最高,拉伸强度可达0.241 MPa,断裂伸长率为1 888.47%。     

软质光固化树脂的制备及其性能研究

以异佛尔酮二异氰酸酯、聚乙二醇、乙二醇和丙烯酸羟乙酯为主要原料,通过分子结构设计合成聚氨酯丙烯酸酯(PUA)预聚物树脂,并以2,4,6-(三甲基苯甲酰基)二苯基氧化膦(2,4,6-Trimethyl benzoyldiphenyl phosphine oxide,TPO)为光引发剂、丙烯酸异辛酯(2-Ethylhexyl acrylate,2-EHA)为稀释剂,制备了可快速固化的软质光固化树脂。同时研究了不同光引发剂及稀释剂含量对固化件的固化时间、拉伸性能、刚度和扩张度的影响。研究表明:当光引发剂TPO的质量分数为3%时,树脂在1s内快速固化;当稀释剂2-EHA质量分数为10%时,固化件的柔性最佳并表现出良好的机械性能;傅里叶红外光谱显示固化后的树脂双键完全聚合。制备的软质光固化树脂可用于光固化3D打印。     

环氧丙烯酸酯紫外光固化涂料的研制

实验合成了涂料用紫外光固化环氧丙烯酸树脂,并对其固化时间、铅笔硬度、附着力、柔韧性、耐磨性能及耐化学品性进行测试.得到了预期的效果.     

叔丁基酚缩水甘油醚丙烯酸酯的合成及其在紫外光固化涂料中的应用

以叔丁基酚缩水甘油醚和丙烯酸为主要原料,三苯基膦为催化剂,对羟基苯甲醚为阻聚剂,合成一种新型的活性稀释剂——叔丁基酚缩水甘油醚丙烯酸酯。通过对反应时间、反应温度、反应转化率、产物色泽和体系黏度等考察,得出较佳反应条件：温度为100～110℃,三苯基膦的质量分数为0.7%～0.9%,对羟基苯甲醚质量分数为0.2%～0.3%。将合成的活性稀释剂和光引发剂加入到双酚A型环氧丙烯酸酯树脂中配成紫外光固化涂料,对涂膜进行了拉伸、硬度、柔韧性等测试。结果表明：此预聚物配成的涂料具有较好的力学和热性能。     

光敏环氧豆油丙稀酸酯齐聚物的应用研究

考察了环氧豆油丙烯酸酯齐聚物的合成、改性及在紫外光固化光纤内层涂料中的应用。环氧豆油丙烯酸酯齐聚物能增加固化膜的柔性 ,用马来酸酐对其改性 ,可提高固化膜的固化速度、硬度、附着力和韧性     

Preparation of a Novel Cationic Photosensitive Resin(3D-SLR01) for Stereolithography 3D Printing and Determination of Its Some Properties

A novel cationic photosensitive resin(3 DSLR-01) for stereolithography 3 D printing was prepared with 3,4-epoxycyclohexylmethyl-3',4'-epoxycyclohexane carboxylate(2021 P),1,4-cyclohexanedimethanol glycidyl ether(JX-026), diglycidyl 4,5-epoxycyclohexane-1,2-dicarboxylate(S-186), polycaprolactone polyol(Polyol-0305), novolac epoxy resin(F-51), bis(3-ethyl-3-oxetanylmethyl) ether(S-221) and a mixture of triarylsulfonium hexafluoroantimonate salts solution(UVI-6976). The properties of the photosensitive resin and its UV-cured films were investigated by some instruments and equipment.The experimental results show that the critical exposure(Ec) of the photosensitive resin is 16.3 mJ/cm~2, the penetration depth(D_p) is 0.14 mm, and the optical property of the photosensitive resin is excellent. Rectangle plates were printed by using a stereolithography apparatus(HRPL-150 A) with the photosensitive resin as the manufacturing material, and the shrinkage rates of the plates were less than 0.60%, which showed that the accuracy of the manufactured plates was very high.     

Synthesis of a novel UV-curable prepolymer hexanediol diglycidyl ether diacrylate and its cured film tensile property

A novel UV-curable prepolymer hexanediol diglycidyl ether diacrylate (HDGEA) was synthesized by utilizing hexanediol diglycidyl ether (HDGE) and acrylic acid (AA) as starting materials, N, N-dimethylbenzylamine as catalyst and p-hydroxyanisole as inhibitor. The optimal synthetic conditions were that the concentration of N, N-dimethylbenzylamine was 0.80 wt% of reactants, the concentration of p-hydroxyanisole was 0.3 wt% of reactants, the reaction temperature was 90-110 ℃, and the molar ratio of HDGE to AA was 1︰2.2. Meanwhile, 1-hydroxycyclohexyl phenyl ketone of a UV-curing initiator was added to the synthesized HDGEA to prepare a kind of UV-curing coating. The mechanical properties of the UV-cured films were determined, giving 31.87 MPa of tensile strength, 871.88 MPa of Young’s modulus and 6.77% of elongation at tear.     

超音速火焰喷涂两种WC-17%Co涂层的组织和性能研究

采用超音速火焰喷涂法制备纳米和普通WC-17%Co涂层,借助于SN-3400型扫描电镜(SEM)、D8型X射线衍射仪(XRD)、HXD-1000TM型显微硬度计、SHT4605型拉伸试验机和TRB型球盘磨损试验机对涂层组织结构、相组成、显微硬度、结合强度及耐磨性能进行了分析.结果表明,两种WC-17%Co涂层形成过程中WC发生了分解,并形成了W2C、W和CoxWyCz(Co3W3C、Co3W9C4)等一些新相,纳米涂层的组织形态明显好于普通涂层,组织晶粒细小,WC晶粒保持在120~150 nm的纳米尺度范围;纳米涂层的显微硬度、结合强度和耐磨性都高于普通涂层,相比之下,纳米涂层的显微硬度、结合强度比普通涂层高出近30%,在相同的试验条件下普通涂层的磨损体积是纳米涂层的2倍.     

水性聚氨酯改性高吸水剂的制备与性能

为得到一种力学性能优良的高吸水树脂,以黄原胶（XG）、丙烯酰胺（AM）与丙烯酸（AA）为原料,采用微波聚合接枝共聚方法,制备超强吸水剂溶液XG（SAP）,并将其与水性聚氨酯（WPU）溶液共混改性.研究了黄原胶用量,丙烯酰胺与丙烯酸单体配比对于吸水剂吸水倍率的影响,探讨了异氰酸酯基团与羟基的比值（R值）和水性聚氨酯质量分数对高吸水剂的力学性能以及吸水性能的影响.采用红外光谱仪（FT-IR）对合成的高吸水剂以及改性后的高吸水剂的结构进行了表征,利用扫描电镜（SEM）,对改性后的高吸水剂的形貌进行表征.结果表明：当丙烯酸与丙烯酰胺的质量比为5∶1,XG占单体总量的比例为3%时,吸水剂的吸水效果最佳;复合胶膜中生成大量氢键,且两相相容性良好;随着R值的增大,XG复合胶膜的拉伸强度增大,断裂伸长率减小;WPU质量分数减小,XG复合胶膜的拉伸强度增大,断裂伸长率减小;XG复合胶膜的最大断裂伸长率可达28.2%,拉伸强度最大可达到9.82MPa.吸水测试表明,其最大吸水倍率可达1340%.     

聚丙烯/PP-g-MA/蒙脱土纳米复合材料的制备和性能研究

采用聚丙烯接枝马来酸酐（PP-g-MA）作增容剂改性聚丙烯（PP）/蒙脱土（MMT）纳米复合材料,研究了不同PP-g-MA含量对PP/PP-g-MA/MMT的流动性、拉伸强度、冲击强度、耐热性、晶体形貌以及MMT分散的影响。结果表明：当PP-g-MA的质量分数为5%时,PP基体的晶粒细化,MMT分散得以改善,拉伸强度基本不变,冲击强度却大幅度增加。     

Synthesis of A Novel Photosensitive Prepolymer with Trimethylolpropane Triglycidylether and Acrylic Acid as Starting Materials

A novel photosensitive prepolymer of trimethylolpropane triglycidylether triacrylate was synthesized by utilizing trimethylpropane triglyridylether anti acolic acid as two starting materials, triphenyl phosphine as catalyst and p- hydroxyanisole as inhibitor. The optimum synthesis conditions were that the conceutration of triphenyl phosphine wets 0. 85wt% of reactants, the conceutration of p-hydroxyanisole was 0. 3wt% of reactants, and the reaction temperature was at 90-110℃ . Benzil dimethyl ketal of a UV-cured initiator was added to the synthesized trimethylolpropane triglycidylether triacrylate to prepare a kind of UV-cured coating. The mechanical properties of the UV-cured films were determined, giving 28.43 MPa of tensile strength, 965 . 59 MPa of Young‘ s modulus and 4.10% of elongation at tear.     

Synthesis of a novel UV-curable prepolymer polypropyleneglycol diglycidyl ether diacrylate

A novel UV-curable prepolymer polypropyleneglycol diglycidyl ether diacrylate （PPGGEA） was synthesized by utilizing polypropyleneglycol diglycidyl ether （PPGGE） and acrylic acid （AA） as starting materials, N, N-dimethylbenzylamine as catalyst and p-hydroxyanisole as inhibitor. The optimum synthetic conditions were in the following： the concentration of N, N-dimethylbenzylamine was 0.80 wt% of reactants, the concentration of p-hydroxyanisole was 0.3 wt% of reactants, the reaction temperature was 90-110 ~C, and the molar ratio of PPGGE to AA was 1：2.2. Meanwhile, 1-hydroxycyclohexyl phenyl ketone of a UV-cured initiator was added to the synthesized PPGGEA to prepare a kind of UV-cured coating. The mechanical properties of the UV-cured films were determined, giving 29.99 MPa of tensile strength, 834.27 MPa of the Young＇s modulus and 5.66% of elongation at tear.     

环氧树脂改性氰酸酯复合材料的性能研究

采用傅里叶变换红外光谱（FTIR）研究了双酚A型氰酸酯（BADCy）/双酚A型环氧树脂（E-51）体系的共固化机理,通过热重分析（TGA）和扫描电子显微镜（SEM）分析了复合材料的耐热性能、断面形态,并测试了材料的冲击强度和介电性能。结果表明E-51的加入对BADCy/E-51体系固化反应有促进作用,并能显著改善材料的韧性和冲击性能。当E-51含量为30%（质量分数）时,材料的冲击强度可达14.38 kJ/m2,且复合材料仍能保持良好的热稳定性和介电性能。