PPSU
?編輯
PPSU是一種無(wú)定形的熱性塑料,具有高度透明性、高水解穩(wěn)定性。制品可以經(jīng)受重復(fù)的蒸汽消毒。
PPSU,學(xué)名:聚亞基砜樹(shù)脂(Polyphenylene sulfone resins)PPSU聚亞基砜樹(shù)脂是聚砜(Polysulfone)簡(jiǎn)稱(chēng)PSF系列的產(chǎn)品 。是新穎的熱塑性工程塑料,指在分子主鏈中含有砜基及芳核的高分子化合物,非結(jié)晶性。
外文名PPSU學(xué)????名聚亞基砜樹(shù)脂全????稱(chēng)Polyphenylene sulfone resins定????義無(wú)定形的熱性塑料
目錄
- 1?法規(guī)
- 2?基本性質(zhì)
- 3?制備方法
- 4?用途
- 5?綜合性能對(duì)比
- 6?特性應(yīng)用
- ???特性
- ???應(yīng)用
- 7?注塑工藝
- 8?相關(guān)描述
法規(guī)
編輯
在國(guó)際法規(guī)中,美國(guó)對(duì)該產(chǎn)品的核心提示:聚亞基砜樹(shù)脂由對(duì)聚硫與過(guò)反應(yīng)制得的基本樹(shù)脂組成。用于制備聚亞基砜的對(duì)聚硫是由硫化鈉和對(duì)二氯反應(yīng)制得。本聚亞基砜樹(shù)脂的小重均分子質(zhì)量為5000道爾頓。添加的輔料為170至189各部分中規(guī)定允許使用的物質(zhì),一般公認(rèn)為在食品中是安全的物質(zhì),在已公布的法規(guī)和規(guī)定文件中允許使用的物質(zhì)。該聚合物的玻璃化溫度為(360±5)℃。
原文如下:
§177.2500 Polyphenylene sulfone resins
??The polyphenylene sulfone resins (CAS Reg. No. 31833-61-1) identified in paragraph (a) of this section may be safely used as articles?or?components of articles intended for repeated use in contact with food, subject to the provisions of this section.
??The polyphenylene sulfone resins (CAS Reg. No. 31833-61-1) identified in paragraph (a) of this section may be safely used as articles?or?components of articles intended for repeated use in contact with food, subject to the provisions of this section.
(a) Identity. For the purpose of this section, polyphenylene sulfone resins consist of basic resin produced by reacting polyphenylene sulfide with peracetic acid such that the finished resins meet the specifications set forth in paragraph (c) of this section. The polyphenylene sulfide used to manufacture polyphenylene sulfone is prepared by the reaction of sodium sulfide and p -dichlorobenzene, and has a minimum weight average molecular weight of 5,000 Daltons.
(b) Optional adjuvant substances. The basic polyphenylene sulfone resins identified in paragraph (a) of this section may contain optional adjuvant substances required in the production of such basic resins. These optional adjuvant substances may include substances permitted for such use by regulations in parts 170 through 189 of this chapter, substances generally recognized as safe in food,?or?substances used in accordance with a prior sanction?or?approval.
(c) Specifications. The glass transition temperature of the polymer is 360±5 °C as determined by the use of differential scanning calorimetry.
[65 FR 15058, Mar. 21, 2000]
基本性質(zhì)
編輯
為略帶琥珀色的線(xiàn)型聚合物。除強(qiáng)極性溶劑、濃硝酸和外,對(duì)一般酸、堿、鹽、醇、脂肪烴等穩(wěn)定。部分溶于酯酮`芳烴,可溶于鹵烴`DM。剛性和韌性好,耐溫、耐熱氧化,抗蠕變性能優(yōu)良,耐無(wú)機(jī)酸、堿、鹽溶液的腐蝕,耐離子輻射,,絕緣性和自熄性好,容易成型加工,
制備方法
編輯
制備方法:由對(duì)聚硫與過(guò)反應(yīng)制得的基本樹(shù)脂組成。
用途
編輯
廣泛用途:
1、適于制作耐熱件、絕緣件、減磨耐磨件、儀器儀表零件及醫(yī)療器械零件,聚芳砜適于制作低溫工作零件。
2、聚砜在電子電器工業(yè)常用于制造集成線(xiàn)路板、線(xiàn)圈管架、接觸器、套架、電容薄膜、高性能堿電池外殼。
3、聚砜在家用電器方面用于微波烤爐設(shè)備、咖啡加熱器、濕潤(rùn)器、吹風(fēng)機(jī)、布蒸干機(jī)、飲料和食品分配器、飲食餐具、水杯、奶瓶等。也可代替有色金屬用于鐘表、復(fù)印機(jī)、照相機(jī)等的精密結(jié)構(gòu)件。
4、聚砜已通過(guò)美國(guó)醫(yī)藥、食品領(lǐng)域的有關(guān)規(guī)范,可代替不銹鋼制品。由于聚砜耐蒸氣、耐水解、、耐高溫蒸氣消毒、高透明、尺寸穩(wěn)定性好等特點(diǎn),可用作手術(shù)工具盤(pán)、噴霧器、流體控制器、閥、起博器、防毒面具、牙托等。
**由于PPSU為安心材質(zhì),不含擾亂內(nèi)分泌的致癌化學(xué)物質(zhì)(環(huán)境荷爾蒙:雙酚A),并作為一種耐熱性的材質(zhì),耐熱溫度高達(dá)207度。因可反覆的高溫煮沸,蒸汽消毒。具有極優(yōu)良之抗藥性及抗酸堿性,可承受一般藥水及洗潔劑清洗,不會(huì)產(chǎn)生化學(xué)變化。輕便,耐摔,無(wú)論從安全性,耐溫,耐水解和耐沖擊等方面都是好的。但是價(jià)格相對(duì)較貴。