【專利摘要】一種低氣味聚甲醛(POM)材料及其制備方法，屬于聚甲醛材料【技術領域】。按質量百分含量計包括如下組分：POM樹脂或其粉料87～99％，抗氧劑0.1～1％，甲醛吸收劑0.1～1％，甲酸吸收劑0.1～1％，脫揮劑0.6～10％。本發明制備的低VOC聚甲醛材料具有通用POM的機械性能，又具有極低的氣味散發特性。
【專利說明】—種低氣味聚甲醛(POM)材料及其制備方法
【技術領域】本發明涉及一種低氣味聚甲醛(POM)材料及其制備方法，屬于聚甲醛材料【技術領域】。
【背景技術】1. 隨著汽車作為一種主要的交通工具普及開來，人們在車內停留的時間越來越長，狹小且空氣流通差的車內環境好壞直接影響著人們的身體健康。材料科技的進步以及汽車輕量化的趨勢，越來越多有機高分子材料應用到汽車制造業，這使得人們越發關注汽車內的揮發性有機化合物(VOC)含量。2. 根據世界衛生組織(WHO)的定義，VOC是指在常壓下沸點范圍在50~260°C、室溫下飽和蒸氣壓超過133.32kPa的一系列易揮發性化合物。目前己鑒定出300多種，包括碳氫化合物、有機鹵化物、有機硫化物、碳基化合物、有機酸和有機過氧化物等。其中危害性較大的主要有苯、甲苯、二甲苯、游離甲醛、丙酮等。短期暴露在高濃度VOC環境中會引起眼睛和呼吸道刺激、頭痛和惡心等癥狀。長期接觸VOC環境，會對人體產生致畸形、致突變和致癌等作用，可能導致肝、腎及神經系統損傷和血液疾病等疾病。3. 汽車內飾件中VOC的檢測主要包括整車級別、零部件級別和材料級別，各大汽車廠商均制定了相應的檢測標準。目前，汽車行業內針對材料級別的主流測試方法是由德國汽車工業協會和德國工業協會制定的系列方法，包含四個指標:VDA270、VDA275、VDA277、DIN75201。其中VDA275主要針對汽車內飾材料的甲醛散發量。
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.
