【专利摘要】一种低气味聚甲醛(POM)材料及其制备方法，属于聚甲醛材料【技术领域】。按质量百分含量计包括如下组分：POM树脂或其粉料87～99％，抗氧剂0.1～1％，甲醛吸收剂0.1～1％，甲酸吸收剂0.1～1％，脱挥剂0.6～10％。本发明制备的低VOC聚甲醛材料具有通用POM的机械性能，又具有极低的气味散发特性。
【专利说明】—种低气味聚甲醛(POM)材料及其制备方法
【技术领域】本发明涉及一种低气味聚甲醛(POM)材料及其制备方法，属于聚甲醛材料【技术领域】。
【背景技术】1. 随着汽车作为一种主要的交通工具普及开来，人们在车内停留的时间越来越长，狭小且空气流通差的车内环境好坏直接影响着人们的身体健康。材料科技的进步以及汽车轻量化的趋势，越来越多有机高分子材料应用到汽车制造业，这使得人们越发关注汽车内的挥发性有机化合物(VOC)含量。2. 根据世界卫生组织(WHO)的定义，VOC是指在常压下沸点范围在50~260°C、室温下饱和蒸气压超过133.32kPa的一系列易挥发性化合物。目前己鉴定出300多种，包括碳氢化合物、有机卤化物、有机硫化物、碳基化合物、有机酸和有机过氧化物等。其中危害性较大的主要有苯、甲苯、二甲苯、游离甲醛、丙酮等。短期暴露在高浓度VOC环境中会引起眼睛和呼吸道刺激、头痛和恶心等症状。长期接触VOC环境，会对人体产生致畸形、致突变和致癌等作用，可能导致肝、肾及神经系统损伤和血液疾病等疾病。3. 汽车内饰件中VOC的检测主要包括整车级别、零部件级别和材料级别，各大汽车厂商均制定了相应的检测标准。目前，汽车行业内针对材料级别的主流测试方法是由德国汽车工业协会和德国工业协会制定的系列方法，包含四个指标:VDA270、VDA275、VDA277、DIN75201。其中VDA275主要针对汽车内饰材料的甲醛散发量。
A low odor polyoxymethylene (POM) material and its preparation method, belonging to the technical field of polyoxymethylene materials. According to the mass percentage content, it includes the following components: POM resin or its powder 87-99%, antioxidant 0.1-1%, formaldehyde absorbent 0.1-1%, formic acid absorbent 0.1-1%, and devolatilizer 0.6-10%. The low VOC polyoxymethylene material prepared by the present invention has the mechanical properties of universal POM and extremely low odor emission characteristics.
【 Patent Description 】 A low odor polyoxymethylene (POM) material and its preparation method
The present invention relates to a low odor polyoxymethylene (POM) material and its preparation method, belonging to the field of polyoxymethylene materials.
[Background Technology] 1 With the popularization of cars as a major means of transportation, people are spending more and more time in cars. The small and poorly ventilated interior environment directly affects people's physical health. With the advancement of material technology and the trend towards lightweighting in automobiles, more and more organic polymer materials are being applied to the automotive manufacturing industry, which has made people increasingly concerned about the volatile organic compound (VOC) content inside cars.
According to the definition of the World Health Organization (WHO), VOCs refer to a series of volatile compounds with boiling points ranging from 50 to 260 ° C at atmospheric pressure and saturated vapor pressures exceeding 133.32 kPa at room temperature. At present, more than 300 types have been identified, including hydrocarbons, organic halides, organic sulfides, carbon based compounds, organic acids, and organic peroxides. The main harmful substances include benzene, toluene, xylene, free formaldehyde, acetone, etc. Short term exposure to high concentrations of VOCs can cause symptoms such as eye and respiratory irritation, headache, and nausea. Long term exposure to VOC environments can cause deformities, mutations, and cancer in the human body, which may lead to liver, kidney, and nervous system damage, as well as blood diseases and other illnesses.
3. The detection of VOCs in automotive interior parts mainly includes vehicle level, component level, and material level, and major automobile manufacturers have formulated corresponding detection standards. At present, the mainstream testing methods for material levels in the automotive industry are a series of methods developed by the German Association of Automobile Manufacturers and the German Industrial Association, including four indicators: VDA270, VDA275, VDA277, and DIN75201. VDA275 mainly targets the formaldehyde emissions from automotive interior materials.
