共查询到19条相似文献,搜索用时 163 毫秒
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采用熔融挤出法制备了一种低散发耐刮擦汽车内饰用聚丙烯(PP)复合材料,研究了不同用量的耐刮擦剂和气味吸附剂对PP复合材料耐刮擦性能和气味散发特性的影响.结果表明,当耐刮擦剂和气味吸附剂的质量分数分别为1.5%和1%时,PP复合材料具有较优异的耐刮擦性能和低气味散发特性,且其力学性能不受影响.该复合材料已成功应用于各种汽车内饰件. 相似文献
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采用熔融共混法制备聚丙烯(PP)/滑石粉共混物,利用力学性能测试和热脱附-气相/质谱(TDS-GC/MS)分析手段考察了滑石粉、吸附剂和萃取剂对PP/滑石粉共混物力学性能、熔体流动速率、气味和挥发性有机物(VOC)挥发量的影响。实验结果表明,随着滑石粉、吸附剂和萃取剂含量的增加,PP/滑石粉共混物的气味和总挥发性有机物(TVOC)降低;而吸附剂和萃取剂含量对力学性能几乎没有影响,对熔体流动速率略有影响;另外,随着吸附剂含量的增加,PP/滑石粉共混物的吸湿性会增大,当吸附剂质量分数达到5%时,放置480 h后,其吸水量提高2.7倍;在滑石粉质量分数为20%的PP/滑石粉共混物中,当吸附剂和萃取剂质量分数分别为0.5%,1.0%时,共混物的气味强度和舒适度可分别达到2.5级和0级,TVOC挥发量较挤出后的纯PP下降51%。 相似文献
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《现代塑料加工应用》2017,(4)
采用熔融共混法制备了聚乙烯(PE)/滑石粉共混物,考察了滑石粉、吸附剂和萃取剂对PE/滑石粉共混物力学性能、气味和挥发性有机物化合物(VOC)的影响。结果表明:随着滑石粉、吸附剂和萃取剂的用量增加,PE/滑石粉共混物的气味和VOC随之降低,而吸附剂和萃取剂的用量增加对力学性能的影响不大;另外,吸附剂含量的增加,PE/滑石粉共混物的吸湿性会随之增强;当吸附剂和萃取剂质量分数分别为0.5%,1.0%时,PE/滑石粉共混物综合性能最佳。 相似文献
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采用熔融共混法制备ABS共混物,利用力学性能测试和热脱附-气相/质谱(TDS-GC/MS)分析手段考察了吸附剂、萃取剂以及真空度对ABS共混物力学性能、熔体流动速率、气味和挥发性有机物(VOC)挥发量的影响。实验结果表明,随着吸附剂、萃取剂和真空度的增加,ABS共混物的气味和总挥发性有机物(TVOC)降低;而吸附剂和萃取剂含量对力学性能几乎没有影响,对熔体流动速率略有影响;另外,随着吸附剂含量的增加,ABS共混物的吸湿性逐渐增大。当吸附剂质量分数达到5%时,放置360 h后,其吸水量提高1倍;在ABS共混物中,当吸附剂和萃取剂质量分数分别为1.0%、1.5%时,共混物的气味强度和舒适度可分别达到3.0级和0级,TVOC的挥发量比挤出后的纯ABS下降了55%。 相似文献
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以PP(聚丙烯)为基体材料,分别添加发泡剂母粒、发泡剂和助剂母粒及发泡剂、助剂、成核剂母粒,在二次开模条件下注塑制备微发泡PP复合材料,分析了发泡助剂及成核剂对微发泡复合材料发泡行为的影响规律。结果表明,添加发泡助剂以后,PP体系的发泡质量得到明显改善;助剂和成核剂同时添加,微发泡PP体系的发泡质量最好,泡孔平均直径为26.79μm,泡孔密度达到4.76×106个/cm3。 相似文献
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采用熔融共混法制备了聚碳酸酯(PC)/丙烯晴丁二烯苯乙烯(ABS)合金,利用力学性能测试和热脱附气相/质谱分析等手段考察了吸附剂和萃取剂对PC/ABS合金力学性能、气味和挥发性有机物(VOC)的影响。结果表明,伴随吸附剂和萃取剂添加量的增加,PC/ABS合金的气味得到不断改善,总挥发性有机物(TVOC)相应持续降低,而对合金材料力学性能的影响甚微;另外,吸附剂添加量的增加会加重PC/ABS合金的吸湿性,当吸附剂用量达到5 %(质量分数,下同)时,自然放置480 h后,其吸水量提高1.7倍;在PC/ABS合金中,当添加的吸附剂和萃取剂用量分别为0.5 %、1.5 %时,得到综合性能最优的产品,气味强度达到3.0级,舒适度改善到0级,TVOC较挤出未添加吸附剂和萃取剂时的纯PC/ABS合金降幅57.9 %;萃取剂对PC/ABS合金环保性能的改善作用优于吸附剂,而二者连用复合体系较各自单独使用更优。 相似文献
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以含30%短玻璃纤维的聚丙烯(PP)为基础,从源头开始控制材料的气味和VOC含量,即将所有可能用到的配料参照大众汽车PV3900气味测试标准进行筛选,优先选择气味等级不超过3级的原料和助剂.主要对当前市场上的几种不同的低气味马来酸酐接枝聚丙烯相容剂(PP-g-MAH)、不同抗氧剂体系和不同气味吸收剂进行了研究.结果表明... 相似文献
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阐述了石化企业在加工生产南帕斯等劣质原油提炼丙烯情况下,三井油化工艺聚丙烯装置生产的聚丙烯树脂出现的异味进行了系统分析判断。针对原料中难以脱除的微量复杂形态硫化物造成的影响,提出了在三井优化工艺聚丙烯装置生产过程中如何通过工艺控制调整降低异味,保证聚丙烯产品质量的改善措施,并提出工艺流程合理改造路线。 相似文献
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A number of chemicals including carbon black, chitosan, benzalkonium chloride, sodium dodecyl sulfate, cyclodextrin, and zeolite13x were tested as odor‐reducing fillers. The rationale is based on the concept of using odor absorbents/adsorbents for which both physical adsorption and chemical adsorption play an important role in odor reduction. The fillers were incorporated into highly odorous natural rubber (STR20 and RSS5) by physical mixing prior to sulfur vulcanization. As identified by gas chromatography and gas chromatography/mass spectrometry, the unpleasant odor mainly originates from low molecular weight volatile fatty acids. The quantity of acetic acid, a representative of odor molecule, can be significantly reduced in the presence of chitosan and zeolite13x. Although carbon black and cyclodextrin exhibited a tendency to reduce the odor, they were not as effective as zeolite13x and chitosan. On the other hand, commercial surfactants such as benzalkonium chloride and sodium dodecyl sulfate cannot serve as odor‐reducing substances because of their limited thermal stability. An olfactometry test confirmed that chitosan and carbon black are good odor‐reducing agents. Chitosan and carbon black showed a reinforcing effect on vulcanized rubber, whereas the surfactant deteriorated the strength of the rubber composite. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 2253–2260, 2004 相似文献
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生活垃圾填埋场中恶臭气体的季节变化特点 总被引:1,自引:0,他引:1
通过对生活垃圾填埋场中恶臭气体(硫化氢、氨、氮氧化物、甲烷等),在不同季节(春、夏、冬季)的监测,分析其随季节的变化特点。得出夏季垃圾填埋场恶臭气体的浓度高于冬季,和恶臭气体并不是由单个恶臭气体浓度简单加和而成,而是有明显的协同作用两个结论。从而为生活垃圾填埋场的恶臭污染控制提供参考依据。 相似文献
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污水处理厂除臭设计体会 总被引:1,自引:1,他引:0
简要介绍污水处理厂恶臭污染的主要危害及来源、臭气的基本成分;概述并比较了近几年来污水行业常用的加盖技术、臭气处理技术;简介了臭气处理的新技术等。 相似文献
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To determine antioxidative effects of ferulic acid and esterified ferulic acids, these compounds were added to soybean oils
(SBO), which were evaluated for oxidative stability and frying stability. Additives included feruloylated MAG and DAG (FMG/FDG),
ferulic acid, ethyl ferulate, and TBHQ. After frying tests with potato chips, oils were analyzed for retention of additives
and polar compounds. Chips were evaluated for hexanal and rancid odor. After 15 h frying, 71% of FMG/FDG was retained, whereas
55% of ethyl ferulate was retained. TBHQ and ferulic acid levels were 6% and <1%, respectively. Frying oils with ethyl ferulate
or TBHQ produced significantly less polar compounds than SBO with no additives. Chips fried in SBO with TBHQ or ferulic acid
had significantly lower amounts of hexanal and significantly less rancid odor after 8 d at 60°C than other samples. Oils were
also aged at 60°C, and stability was analyzed by PV, hexanal, and rancid odor. Oils with TBHQ or FMG/FDG had significantly
less peroxides and hexanal, and a lower rancid odor intensity than the control. FMG/FDG inhibited deterioration at 60°C, whereas
ethyl ferulate inhibited the formation of polar compounds in frying oil. Ferulic acid acted as an antioxidant in aged fried
food. TBHQ inhibited oil degradation at both temperatures.
Presented at the 94th AOCS Meeting & Expo, Kansas City, MO, May 4–7, 2003. 相似文献