分散剂对PA6纤维蓝色母粒着色性能的影响

以纺丝级聚酰胺(PA)6为载体树脂,酞菁蓝9680,K7090,BGSP–3SD为颜料,A–C540A,AClyn295A,A–C6A为分散剂制备纤维用蓝色母粒,并将制得的蓝色母粒用于PA6着色。用Datacolor测色仪测定材料的着色性能,用光学显微镜观察颜料的分散性,研究了三种颜料及三种分散剂对PA6纤维母粒色彩性能及分散性的影响。结果表明,三种颜料的着色力度相差不大,其中酞菁蓝9680分散相对较好;分散剂A–C540A相对更适用于PA6纤维原液着色,当其添加量为7%时,着色力达到119.73%,着色性能提高显著。     

聚酰胺用蓝色母粒的制备与分散性能研究

以低密度聚乙烯为载体树脂,酞菁蓝为颜料,聚乙烯蜡、乙烯丙烯酸共聚物(AC–540A)为分散剂,用双螺杆挤出造粒法制备颜料含量为20%的蓝色母粒。将制得的蓝色母粒用于聚酰胺(PA)6的着色。评价了不同分散剂种类及含量对PA6色彩性能和颜料分散性能的影响。结果表明,选用AC–540A为分散剂,其含量为3%时,PA6制品的–b*值最大(蓝色最明显),反射率最高,透射率最低,以偏光显微镜观察发现酞菁蓝颜料在PA6中分散均匀。     

超细针状硅灰石在聚乙烯蓝色母粒中替代作用的分析

用扫描电镜分析研究了超细硅灰石的形貌,并将其应用于聚乙烯蓝色母粒。探讨了超细硅灰石对蓝色母粒色彩性能的影响,并对其分散性和耐热性进行了测试。结果表明:用超细硅灰石替代20%颜料制备的色母粒,其颜料在塑料制品中的着色性能和分散性良好;用超细硅灰石替代15%颜料制备的色母粒,其色差值最小,耐热温度可提高12℃。     

水磨法超细BaSO4在聚烯烃色母粒中的应用

采用扫描电镜及粒径分析仪研究了水磨法超细BaSO4的形态及粒径分布，并将其应用于聚烯烃色母粒，探讨了超细BaSO4对红黄蓝3种色母粒彩色性能的影响，井将国内外颜料进行了对比。结果表明，用超细BaSO4替代20%颜料制备的色母粒，其颜料在塑料制品中的着色性能和分散性良好。其中BaSO4用于替代红颜料制备的色母粒效果最好。     

分散剂对PPS原液着色纤维母粒性能的影响

选用离聚体型、聚酯型、聚醚型三种不同分散剂分别与酞菁蓝颜料以及聚苯硫醚(PPS)共混,通过双螺杆熔融挤出造粒,得到PPS蓝色纤维母粒,然后将PPS蓝色纤维母粒与PPS树脂混合熔融纺丝制得PPS色丝.探究了不同种类分散剂及含量对颜料在PPS中的分散性能、母粒流变性能、制品着色性能,以及PPS有色长丝表面形貌与力学性能的影...     

热塑性聚氨酯蓝母粒的制备及性能研究

通过设计母粒配方和调控加工工艺,成功制备了颜料质量分数为20%的热塑性聚氨酯蓝母粒。并通过积分球式测色仪、光学显微镜和熔体流动速率仪,测试了热塑性聚氨酯蓝母粒及其着色制品的着色力、遮盖力、分散性及母粒的加工流动性能。结果表明,酞菁蓝15:3适用于制备热塑性聚氨酯色母粒,选择HPL6050作为分散剂,当其含量为8%时,制品具有最好的色彩性能和加工流动性能,且颜料粒子分散最好。     

酚类植物提取液抗菌PA6纤维的制备及性能研究

以酚类植物提取液为抗菌剂,聚己内酰胺(PA 6)为载体,制备抗菌母粒;采用抗菌母粒与PA 6切片共混纺丝,制备抗菌PA 6纤维,研究了其可纺性及抗菌性能。结果表明:该抗菌剂具有较好的抗菌效果,且对纺丝过程无明显影响;抗菌母粒中酚类植物提取液质量分数为10%,260℃时热失重率为4.2%,纺丝温度应小于260℃;共混纺丝时,抗菌母粒质量分数为3%,纺丝温度230~255℃,拉伸倍数5.3,纺丝顺利,无断头现象,所得抗菌PA 6纤维断裂强度为5.95 c N/dtex,断裂伸长率为35.3%,对大肠杆菌和金黄色葡萄球菌的抗菌率均达99%以上;抗菌PA 6纤维经高温染色后,抗菌性能略有下降,高温热水条件下耐久性欠佳,宜采用原液着色。     

着色抗静电PVC糊的性能

以聚氯乙烯(PVC)糊为基体树脂,采用导电云母粉为抗静电剂,并添加颜料制备了着色抗静电PVC糊。探索了导电云母粉用量对PVC糊抗静电性能的影响,不同颜料的添加量对PVC糊着色性能的影响,并着重研究了环保型颜料有机红144对PVC糊的着色性能、导电性能、微观分散性、力学性能的影响。结果表明:导电云母粉用量为15.0 phr时,改性PVC糊的抗静电性能较好;当有机红144质量分数为1.2%时,着色抗静电PVC糊的着色性能较优,表面电阻率不随颜料含量变化而变化,力学性能略有降低。     

未来色母粒发展方向

色母粒是20世纪60年代开发的一种塑料、纤维的着色新产品，它是把颜料超常量均匀的载附于树脂中而制得的聚合物的复合物；美国称之为颜料浓缩物或颜料制备物。色母粒主要组成为着色剂、载体、分散剂三部分。按照色母粒的用途区分，目前我国可生产塑料注塑成型用色母粒、吹膜用色母粒、纤维用色母粒以及多功能色母     

未来色母粒发展方向

色母粒是20世纪60年代开发的一种塑料、纤维的着色新产品，它是把颜料超常量均匀的载附于树脂中而制得的聚合物的复合物；美国称之为颜料浓缩物或颜料制备物。色母粒主要组成为着色剂、载体、分散剂三部分。按照色母粒的用途区分，目前我国可生产塑料注塑成型用色母粒、吹膜用色母粒、纤维用色母粒以及多功能色母粒等类别。     

炭黑在聚酰胺6中的超分散性研究

用超分散剂在分散介质中预处理炭黑,然后将预处理后的炭黑与聚酰胺6(PA6)在转矩流变仪中共混,制备了PA6/炭黑色母料,并将该色母料添加到PA6中制备了PA6/炭黑复合材料。考察了不同超分散剂和分散介质对色母料加工性能的影响,通过扫描电子显微镜考察了超分散剂和分散介质对炭黑分散性能的影响,并对PA6/炭黑复合材料进行了力学性能测试。结果表明,N,N'-二甲基甲酰胺对炭黑粒子有很好的润湿性能;用超分散剂聚氨基甲酸酯预处理的炭黑在PA6中分散良好,分布均匀,平均粒径为50~70 nm;添加5 %色母料的PA6/炭黑复合材料的拉伸强度可达105.1 MPa,比纯PA6提高了38.72 %。     

纳米蒙脱土母料对PA6力学性能的影响

简述了纳米蒙脱土(MMT)母料制备工艺及过程,分别阐述了不同载体树脂、不同分散程度及用不同方法处理的纳米MMT母料对聚酰胺6力学性能的影响。     

两种钴蓝颜料在聚烯烃色母粒中的应用研究

通过X射线光电子能谱仪、X射线衍射仪及扫描电镜对钴蓝颜料元素种类及含量、结晶性能、颜料粒子形貌及分布的研究,了解两种钴蓝颜料的微观差异;将两种钴蓝颜料应用于色母粒,采用积分球式测色仪、显微镜和熔体流动速率仪,分析了色母粒及其着色制品的着色力、分散性能、遮盖性能及色母粒的加工流动性能差异。结果表明,恰当的钴铝含量可以使钴蓝颜料在制品中有良好的着色效果;颜料表面元素中碳含量高有利于颜料在塑料中的分散,制备的色母粒加工流动性能更好;原生粒子小的钴蓝颜料充分分散后其着色效果比原生粒子大的更好;而对于40%钴蓝颜料含量的色母粒,采用5%的蜡作为分散剂,可以达到很好的分散效果。     

The influence of carbon black batches on the fracture behavior of glass fiber reinforced PA6/PA66 blends

The toughness behavior of 30 wt % glass fiber reinforced PA6/PA66 blends colored with different masterbatches containing carbon black (CB) was characterized by the instrumented Charpy impact test. Two different CB types with different particle diameters as well as two different polymers, PE and PA6, were used to prepare the masterbatches. The CB concentration was varied from 0 to 1.2 wt % in the compounds and all materials were examined dry and after water absorption. The toughness of the compounds significantly decreased when CB was incorporated. Moisture conditioning of the materials led to increased toughness and ductility but did not compensate for the negative influence of CB. Using PE as a masterbatch polymer succeeded in limiting the influence of CB on toughness whereas the largest particle diameter led to the highest reduction in toughness. By taking into account crack resistance curves, it could be shown that there is a significant change in crack propagation behavior when the concentration of the larger particle CB exceeds a certain level; this was ascribed to the existence of complex CB structures at this concentration. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010     

尼龙基MCA母粒的制备及其在阻燃尼龙的应用

针对三聚氰胺氰尿酸盐(MCA)粉体对尼龙(PA)进行阻燃改性时,MCA分散性差,材料阻燃性能不稳定的问题,运用特殊的包覆工艺成功制得了PA基MCA母粒。将制得的MCA母粒及MCA粉体分别与PA6或PA66共混挤出,制得阻燃PA材料。对比分析了MCA母粒及MCA粉体阻燃PA6或PA66的垂直燃烧性能和力学性能。结果表明,与MCA粉体相比,MCA母粒可在MCA含量较低的情况下使厚度为0.8 mm及1.6 mm的阻燃PA6或PA66试样的垂直燃烧等级达到V–0级。MCA母粒及粉体对阻燃PA6的弯曲强度和PA66的拉伸强度影响很小,MCA母粒阻燃PA6的拉伸强度较粉体阻燃的高,而阻燃PA66的弯曲强度低;MCA母粒使阻燃PA的缺口冲击强度降低,而MCA粉体对PA的缺口冲击强度影响较小,当MCA含量较低时,MCA母粒阻燃PA的缺口冲击强度明显高于MCA粉体阻燃的PA。制备的MCA阻燃母粒对PA的阻燃效果不受黑色母料的影响,且具有较好的阻燃稳定性。     

改性多壁碳纳米管／PA6纤维的制备及力学性能

将多壁碳纳米管(MWNT)氧化后,酰氯化处理,在氨基封端的PA6聚合时加入,制备PA6／MWNT母粒,将母粒同PA6切片熔融共混纺丝,制备PA6／MWNT纤维。用INSTRON 1122型万能材料试验机测定纤维的力学性能。结果表明,改性MWNT的加入提高了PA6纤维的断裂强度,纤维中MWNT质量分数仅为0．05％时,纤维的断裂强度和初始模量最大,分别增加了60％和86％。用扫描电镜观察复合纤维的结构,发现MWNT均匀地分布在PA6中,并与PA6基体间有相互作用,沿纤维轴向取向。     

Phase morphology evolution and compatibilization of immiscible polyamide 6/polystyrene blends using nano‐montmorillonite

Nanocomposites of organic nano‐montmorillonite (nano‐OMMT)‐filled immiscible polyamide 6 (PA6)/polystyrene (PS) blends were prepared by three different processing methods. Masterbatch M1 of OMMT/PA6 and masterbatch M2 of OMMT/PS were prepared as separate masterbatchs by melt mixing with PA6 or PS, and then either mixed together or each mixed individually with appropriate amounts of PS or PA6, respectively. The effects of nano‐OMMT content and processing method on the structure, phase morphology, and mechanical properties of the PA6/PS/OMMT nanocomposites were investigated by X‐ray diffraction, transmission electron microscopy, scanning electron microscopy, and mechanical properties tests. The results showed that the nano‐OMMT by M1 and M2 masterbatches dispersed primarily as exfoliated platelets in the PA6 matrix in the final composites regardless of the method of preparation. A drastic decrease of dispersed PS phase size and a very homogeneous size distribution were observed with the addition of nano‐OMMT. The PA6/PS/OMMT nanocomposites prepared from the M2 displayed the smallest dispersed PS phase size and best distribution of OMMT. The improvement of the mechanical properties of the PA6/PS/OMMT nanocomposites was attributed to the enhanced compatibilization of the immiscible PA6/PS blends by using nano‐OMMT. POLYM. ENG. SCI., 2017. © 2017 Society of Plastics Engineers     

PP-R管材专用灰色母料的研制

研究了不同的聚丙烯载体树脂、颜料对制造的PP-R灰色专用母料的各项性能的影响以及母料在管材中的应用，筛选出了熔体动流速率适宜的PP树脂、性能优良的颜料，并将制备的色母料用于PP-R管材。结果表明，颜料耐移性达6级、分散性达5级、耐热性达5级，产品达到或接近国外产品水平。     

HDPE/expanded graphite nanocomposites prepared via masterbatch process

High Density Polyethylene (HDPE) was melt extruded with different amounts of expanded graphite (EG) based masterbatches. Conductive composites were obtained by diluting PE and PS masterbatches with 60 wt% content of expanded graphite. These masterbatches were readily dispersed into the molten HDPE matrix yielding well‐dispersed HDPE/EG nanocomposites which couldn't be done by direct melt extrusion process under the same conditions. Electrical conductivity measurements showed a reduced percolation threshold by this masterbatch filling technique while the resulting composites were 2–3 orders of magnitude lower than that of direct melt extrusion because EG sheets were effectively encapsulated by PE or PS carriers in these masterbatches which leads to a better EG dispersion in composites. Both scanning electron microscopy (SEM) and X‐Ray diffraction (XRD) proved an excellent dispersion of EG in polymer matrix with the worm‐like structure tended to break into pieces under intensive rolling. The improvements in mechanical and thermal properties have been studied for the nanocomposites as prepared by masterbatch process. The results depended greatly on the dispersion of EG and the compatibility between masterbatch and HDPE matrix. POLYM. ENG. SCI., 47:882–888, 2007. © 2007 Society of Plastics Engineers