沙伯基礎(chǔ)SABIC PBT VALOX 420SE0 優(yōu)點：
1、機(jī)械性質(zhì)安定抗張強(qiáng)度與抗張模數(shù)和尼龍相似；2、摩擦系數(shù)小有自潤性；
沙伯基礎(chǔ)SABIC PBT VALOX 420SE0 用途：
深圳科斯莫科技有限公司是 美國沙伯基礎(chǔ) SABIC 在華南地區(qū)一級代理商，長期代理 美國沙伯基礎(chǔ) SABIC 各型號塑膠原料，貨源穩(wěn)定，價格實惠，歡迎新老客戶選購！
Mother was nearly always out. Meals were dull and dirty. The between-maid was sent away, and Aunt Emma came on a visit. Aunt Emma was much older than Mother. She was going abroad to be a governess. She was very busy getting her clothes ready, and they were very ugly, dingy clothes, and she had them always littering about, and the sewing-machine seemed to whir — on and on all day and most of the night. Aunt Emma believed in keeping children in their proper places. And they more than returned the compliment. Their idea of Aunt Emma’s proper place was anywhere where they were not. So they saw very little of her. They preferred the company of the servants, who were more amusing. Cook, if in a good temper, could sing comic songs, and the housemaid, if she happened not to be offended with you, could imitate a hen that has laid an egg, a bottle of champagne being opened, and could mew like two cats fighting. The servants never told the children what the bad news was that the gentlemen had brought to Father. But they kept hinting that they could tell a great deal if they chose — and this was not comfortable.
3、吸水率低；4、電氣性質(zhì)優(yōu)良；5、尺寸安定性良好；6、耐藥品性、耐油性極佳。
1、電子電器：無熔線斷電器、電磁開關(guān)、馳返變壓器、家電把手、連接器、外殼等；
2、汽車：車門把手、保險桿、分電盤蓋、擋泥板、導(dǎo)線護(hù)殼、輪圈蓋等；
3、工業(yè)零件：OA風(fēng)扇、鍵盤、釣具卷線器、零件、燈罩等。
⒈優(yōu)良的機(jī)械性能，機(jī)械強(qiáng)度高，耐疲勞性和尺寸穩(wěn)定好。蠕變也小，這些性能在高溫條件下也極少有變化。
⒉生產(chǎn)PBT所消耗的能量是工程塑料中最低的的，這對于世界范圍內(nèi)能源緊缺的情況下，具有十分重要的意義。
⒊耐熱老化性優(yōu)異，增強(qiáng)后的UL溫度指數(shù)達(dá)到120~140℃，此外，戶外長期老化性也很好。
⒋耐溶劑好，無應(yīng)力開裂。
⒌PBT易于阻燃，可達(dá)UL94V-0級，由于與阻燃劑親和性能好，所以容易開發(fā)反應(yīng)型或添加型的阻燃品級。阻燃產(chǎn)品在電子電器工業(yè)中獲得廣泛應(yīng)用。
⒍PBT遇水易分解，在高溫、高濕環(huán)境下使用需謹(jǐn)慎。
⒎優(yōu)良的電氣性能，體積電阻率及介電強(qiáng)度高，耐電弧性優(yōu)良，吸濕性極小，在潮濕及高溫環(huán)境下，也能保持電性能穩(wěn)定，是制造電子、電器零件的理想材料。
⒏易成型加工和二次加工，易用普通設(shè)備注塑或擠塑。由于結(jié)晶速度快，流動性好，模具溫度也比其他工程材料要求低，在加工薄壁制件時僅需幾秒鐘，對大部件也只需40-60s即可。
PBT中文名稱聚對苯二甲酸丁酯，簡稱飽和聚酯，系高結(jié)晶性熱可塑性塑料。
特點：PBT為乳白色半透明到不透明、結(jié)晶型熱塑性聚酯。具有高耐熱性、韌性、耐疲勞性，自潤滑、低摩擦系數(shù)，耐候性、吸水率低，僅為0.1%，在潮濕環(huán)境中仍保持各種物性（包括電性能），電絕緣性，但介電損耗大。耐熱水、堿類、酸類、油類、但易受鹵化烴侵蝕，耐水解性差，低溫下可迅速結(jié)晶，成型性良好。PBT 結(jié)晶速度快，最適宜加工方法為注塑，其他方法還有擠出、吹塑、涂覆和各種二次加工成型，成型前需預(yù)干燥，水分含量要降至0.02%。PBT（增強(qiáng)、改性PBT）主要用于汽車、電子電器、工業(yè)機(jī)械和聚合物合金、共混工業(yè)。如作為汽車中的分配器、車體部件、點火器線圈骨架、絕緣蓋、排氣系統(tǒng)零部件、摩托車點火器、電子電器工業(yè)中如電視機(jī)的偏轉(zhuǎn)線圈，顯像管和電位器支架，伴音輸出變壓器骨架，適配器骨架，開關(guān)接插件、電風(fēng)扇、電冰箱、洗衣機(jī)電機(jī)端蓋、軸套.