【專(zhuān)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(shù)領(lǐng)域】。按質(zhì)量百分含量計(jì)包括如下組分：POM樹(shù)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(fā)明制備的低VOC聚甲醛材料具有通用POM的機(jī)械性能，又具有極低的氣味散發(fā)特性。
【專(zhuān)利說(shuō)明】—種低氣味聚甲醛(POM)材料及其制備方法
【技術(shù)領(lǐng)域】本發(fā)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(shù)領(lǐng)域】。
【背景技術(shù)】1. 隨著汽車(chē)作為一種主要的交通工具普及開(kāi)來(lái)，人們?cè)谲?chē)內(nèi)停留的時(shí)間越來(lái)越長(zhǎng)，狹小且空氣流通差的車(chē)內(nèi)環(huán)境好壞直接影響著人們的身體健康。材料科技的進(jìn)步以及汽車(chē)輕量化的趨勢(shì)，越來(lái)越多有機(jī)高分子材料應(yīng)用到汽車(chē)制造業(yè)，這使得人們?cè)桨l(fā)關(guān)注汽車(chē)內(nèi)的揮發(fā)性有機(jī)化合物(VOC)含量。2. 根據(jù)世界衛(wèi)生組織(WHO)的定義，VOC是指在常壓下沸點(diǎn)范圍在50~260°C、室溫下飽和蒸氣壓超過(guò)133.32kPa的一系列易揮發(fā)性化合物。目前己鑒定出300多種，包括碳?xì)浠衔铩⒂袡C(jī)鹵化物、有機(jī)硫化物、碳基化合物、有機(jī)酸和有機(jī)過(guò)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(huán)境中會(huì)引起眼睛和呼吸道刺激、頭痛和惡心等癥狀。長(zhǎng)期接觸VOC環(huán)境，會(huì)對(duì)人體產(chǎn)生致畸形、致突變和致癌等作用，可能導(dǎo)致肝、腎及神經(jīng)系統(tǒng)損傷和血液疾病等疾病。3. 汽車(chē)內(nèi)飾件中VOC的檢測(cè)主要包括整車(chē)級(jí)別、零部件級(jí)別和材料級(jí)別，各大汽車(chē)廠商均制定了相應(yīng)的檢測(cè)標(biāo)準(zhǔn)。目前，汽車(chē)行業(yè)內(nèi)針對(duì)材料級(jí)別的主流測(cè)試方法是由德國(guó)汽車(chē)工業(yè)協(xié)會(huì)和德國(guó)工業(yè)協(xié)會(huì)制定的系列方法，包含四個(gè)指標(biāo):VDA270、VDA275、VDA277、DIN75201。其中VDA275主要針對(duì)汽車(chē)內(nèi)飾材料的甲醛散發(fā)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.
