润滑剂对溴系阻燃ABS性能的影响

对比研究了白油、硅油和扩散油三种润滑剂对溴系阻燃ABS性能的影响。结果表明:在溴锑复配阻燃体系下,润滑剂的加入能够显著提高材料的加工性能,并保持良好的力学性能。其中硅油的加入提高了材料的阻燃性能,具有协效阻燃的效果。     

滑石粉用量对ABS/硅油混合物性能的影响

本文通过滑石粉用量对ABS/硅油混合物性能的影响进行比较深入的研究.从而最终基本确定了制作门内基板、门立柱等轿车内装件用ABS/硅油混合物专用料所使用滑石粉用量的范围。     

PVC/ABS共混体系力学性能的研究

用冲击试验机、材料试验机和另外一些相关的仪器对PVC/ABS共混体系的力学性能进行了测试、研究,结果发现,PVC/ABS共混体系的性能是组分的函数。ABS的加入改善了PVC/ABS共混体系的力学性能,随着ABS的增加,体系的冲击强度和断裂伸长率明显地提高,而体系的拉伸强度、拉伸模量几乎是随ABS含量的增加而单调地下降。     

硅油用量对ABS/硅油混合物性能的影响

采用旋转回归设计,研究了硅油用量对ABS/硅油混合物性能的影响,确定了为制作门内基板、门立柱等轿车内装件所用的ABS/硅油混合物专用料的配比     

PC/ABS/聚硼硅氧烷阻燃合金的性能

采用X射线能谱分析(EDX)研究了PC/ABS/聚硼硅氧烷阻燃合金的燃烧行为,同时考察了阻燃PC/ABS合金的力学性能和加工性能。结果表明,聚硼硅氧烷(PB)中的Si元素会随着燃烧过程的进行逐渐在合金表面进行富集,形成富含Si的绝缘炭层覆盖在基体表面,阻止合金继续燃烧,从而有效提高了PC/ABS合金的阻燃性能。聚硼硅氧烷使PC/ABS合金体系的力学性能有所下降,但拉伸强度下降较少,PB对PC/ABS合金的冲击强度影响较大。在阻燃PC/ABS合金体系中加入相容剂马来酸酐接枝ABS,可使合金体系的力学性能得到明显提高。适量的PB可以改善PC/ABS合金的加工性能。     

硫酸盐晶须改性ABS复合材料的性能与微观结构

以硫酸钙晶须、硫酸镁晶须为增强改性剂,高胶粉为增韧改性剂,ABS为主体材料,通过采用熔融混合挤出制得改性ABS复合材料。对该复合材料的力学性能、热性能进行测试,观察了硫酸钙晶须和硫酸镁晶须用量对ABS复合材料的力学性能、热性能的影响,并讨论了相关的增韧增强机理。观察了硫酸钙晶须、硫酸镁晶须/ABS复合材料的微观结构。实验结果表明,在改性ABS材料时,硫酸镁晶须与硫酸钙晶须相比,具有更好的综合力学性能。     

PC/ABS塑料合金的开发与应用

研究了ABS和PVC对PC/ABS共混体系力学性能的影响.结果表明,ABS和PVC对PC/ABS塑料合金具有明显的增韧和提高加工性能的作用.     

硅油粘度对ABS／硅油混合物性能的影响

通过硅油粘度对ABS／硅油混合物性能的影响进行比较深入的研究，从而最终确定了制作门内基板、门立柱等轿车内装件用ABS／硅油混合物专用料所使用的硅油粘度范围。     

无卤阻燃PC/ABS合金

通过阻燃性能、力学性能测试及场发射扫描电镜(FE-SEM)分析,研究相容剂、增韧剂、磷酸酯阻燃剂对PC/ABS合金阻燃及力学性能的影响,结果表明:相容剂A使ABS在PC中的颗粒尺寸减少,对PC/ABS体系相容性最好,但对合金的冲击性能提高有限.丙烯酸酯类增韧剂B的加入显著提高了PC/ABS合金的韧性.磷酸酯类阻燃剂虽然对PC/ABS合金具有很好的阻燃效果,但极大降低了合金的冲击性能,不同的加工工艺对合金的力学性能影响很大.     

高性能PA6/ABS合金的研制

分别以接枝ABS、苯乙烯-马来酸酐接枝物（SMA）和苯基马来酰亚胺共聚物为相容剂,考察了它们对PA6/ABS共混体系相容性和力学性能的影响。并研究了PA6/ABS共混体系中PA6、ABS树脂的选择对共混物冲击韧性的影响。研究表明,接枝ABS、SMA和苯基马来酰亚胺共聚物都是PA6/ABS共混体系的有效增容剂,能显著改善PA6/ABS共混物的相容性并提高共混物的机械力学性能。选用高粘度的PA6树脂有利于提高共混体系的冲击韧性,提高高胶含量ABS用量有助于获得高低温冲击性能优异的PA6/ABS合金材料。     

硅油改性ABS的研究及应用

介绍了ＡＢＳ树脂、硅油国内外生产概况、重点介绍了硅油改性ＡＢＳ树脂研究进展和ＡＢＳ／硅油共混物应用进展,并提出了我国进一步开发ＡＢＳ／硅油共混物的建议     

ABS/硅油混合物摩擦性能研究

本文通过采用旋转回归设计,对影响ＡＢＳ／硅油混合物摩擦性能的各种因素进行了比较深入的研究,通过摩擦性能对比,发现在体系中加入硅油确实使体系在摩擦性能上有较大幅度的提高,同时也考察了滑石粉对ＡＢＳ／硅油共混物摩擦性能的影响,从而最后确定了制作轿车门立柱、门内基板等内饰件ＡＢＳ／硅油混合物的配方。     

邻甲酚醛环氧树脂/核壳粒子共混物的性能研究

采用直接分散和二次分散两种方法分别制备了邻甲酚醛环氧树脂／核壳粒子(ECN/CSP)共混物,并对其微观形态、力学性能和热性能进行了测试表征.结果表明,采用二次分散法制备的ECN/CSP共混物的力学性能明显优于直接分散法.当CSP用量为8份时,采用二次分散法可制备综合性能较好的ECN/CSP共混物.     

改性腐植酸新型阻垢缓蚀剂的制备及应用

采用溶液共混技术，制备了腐植酸钠（HA）和丙烯酰胺－烯丙基磺酸钠（SAS）共聚物[P(AM-SAS)]的共混物[HA/P(AM-SAS )]，研究了共混物[HA/P(AM-SAS)]的阻垢、缓蚀和分散性能，并与HA和P（AM－SAS）做了对比分析。实验表明，HA。P（AM－SAS）共混物、HA 和P（AM－SAS）的阻垢、缓蚀和分散能力了胡着使用浓度的增加而提高。与HA和P（AM－SAS）相比，HA／P（AM－SAS）共混物具有更好的阻垢、缓蚀和分散能力，当HA／P（AM－SAS）质量比超过1或2时，HA和P（AM－SAS）的共混对于CaCO3和Ca3(PO4)2的阻垢作用表现出了明显的协同效应。当ρ（Ca^2 )=250mg/L、ρ(CHO^-3)=250mg/L、ρ(CO^2-3)=85mg/L、ρ（ PO^3-4)=5mg/L、pH=8.5、T ＝80℃、t＝10 h时，HA／P（AM－SAS）共混物对CaCO3和Ca3(PO4)2的阻垢率分别达到了98.9%和97.2%。当HA／P（AM－SAS）共混物的使用浓度超过20mg/L，共混物对碳钢的缓蚀率将超过95.0％。     

Distribution of oil in olefinic thermoplastic elastomer blends

The distribution of processing oil in two olefinic thermoplastic elastomer (OTPE) blends was determined using dielectric spectroscopy. The OPTE blends are blends of dynamically vulcanised EPDM with polypropylene (PP), TPVs, and blends of PP with SEBS. Both blend types contain paraffinic oil, which is present in both the PP and in the elastomer phase. The determination of the actual oil concentration by measuring the reduction in the glass transition temperatures (T_g) is inaccurate using DSC or DMA, because the glass transition dynamics of the two phases overlap. The blends were made sensible for dielectric spectroscopy by the addition of a probe molecule. The oil distribution was determined by modelling of the dielectric loss of the OPTE blends in the T_g regime from the ones of the binary mixtures. The mean value for the oil distribution coefficient was found to be 0.6 for PP/SEBS blends and 0.63 for TPVs.     

EPDM-g-MAN增韧聚氯乙烯的研究

用悬浮法合成三元乙丙橡胶（EPDM）与甲基丙烯酸甲酯（MMA）及丙烯腈（AN）接枝共聚物（EPDM-g-MAN）,用其增韧聚氯乙烯（PVC）树脂。研究了PVC/EPDM-g-MAN共混物的抗冲击性能、增韧机理、相结构以及热稳定性,并与PVC/氯化聚乙烯(CPE)共混物的抗冲击性能进行了对比。结果表明：EPDM-g-MAN比CPE具有更好的增韧效率。SEM分析表明,随着EPDM-g-MAN用量的增加,共混物的增韧机理由裂纹支化终止转变为剪切屈服兼有空穴化。TEM分析表明,EPDM以分散相均匀分散于PVC连续相中,两相界面模糊,具有良好的相容性,且随着EPDM含量的增加,共混物的相结构由“海-岛”结构转变为近连续相结构。EPDM-g-MAN的加入提高了PVC的热稳定性。     

Oxidative stability of blends and interesterified blends of soybean oil and palm olein

Improvement of oxidative stability of soybean oil by blending with a more stable oil was investigated. Autoxidation of blends and interesterified blends (9∶1, 8∶2, 7∶3 and 1∶1, w/w) of soybean oil and palm olein was studied with respect to fatty acid composition, fatty acid location and triacylglycerol composition. Rates of formation of triacylglycerol hydroproxides, peroxide value and volatiles were evaluated. The fatty acid composition of soybean oil was changed by blending. Linolenic and linoleic acids decreased and oleic acid increased. The triacylglycerol composition of blends and interesterified blends was different from that of soybean oil. Relative to soybean oil, LnLL, LLL, LLO, LLP, LOO and LLS triacylglycerols were lowered and POO, POP and PLP were higher in blends and interesterified blends (where Ln, L, O, P and S represent linolenic, linoleic, oleic, palmitic and stearic acids, respectively). Interesterification of the blends leads to a decrease in POO and POP and an increase in LOP. Linoleic acid concentration at triacylglycerol carbon-2 was decreased by blending and interesterification. Rates of change for peroxide value and oxidation product formation confirmed the improvement of soybean oil stability by blending and interesterification. But, blends were more stable than interesterified blends. Also, the formation of hexanal, the major volatile of linoleate hydroperoxides of soybean oil, was decreased by blending and interesterification.     

A study on using fish oil as an alternative fuel for conventional combustors

Combustion tests for fish oil and its blends with fuel oils were performed in a pilot tunnel furnace and two residential boilers to evaluate fish oil as an alternative fuel for conventional boilers and furnaces. Droplet evaporation tests were also conducted as a complementary study of the combustion properties. Fish oil and the blends burned readily in the facilities. The emissions were generally lower than burning the pure fuel oil except that of NO, which was higher for blends with No. 6 residual fuel oil. With better quality No. 2 fuel oil the NO emission of the blends was at the same level as that of the pure oil. Overall fish oil showed good combustion properties and significant economic and environmental benefits are expected.     

Oil and thermal aging resistance in compatibilized and thermally stabilized chlorinated polyethylene/natural rubber blends

Influences of EPDM-g-MA as a compatibilizer and a phenolic antioxidant on oil and thermal aging resistance in 50/50 CPE/NR blends were investigated. It has been found that EPDM-g-MA could decrease phase size of the blend system, indicating compatibilizing effect. The optimal concentration of EPDM-g-MA is 1 phr. Beyond this concentration, phase size starts to increase. The addition of phenolic antioxidant apparently decreases the phase size in blends. This is probably due to the improvement in a thermal stabilization of NR phase in blends provided by the antioxidant, which leads to a reduction in phase coalescence during blending. In addition, the results of oil and thermal aging resistance are in good agreement with the morphological results, indicating that the oil resistance and thermal aging properties based on relative tensile strength in the 50/50 CPE/NR blends are strongly controlled by the size of the NR dispersed phase in CPE matrix. The smaller the dispersed phase size, the higher the resistance to oil and thermal aging.