PPSU聚亞基砜樹脂是聚砜(Polysulfone)簡(jiǎn)稱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。

在國際法規(guī)中，美國對(duì)該產(chǎn)品的核心提示：聚亞基砜樹脂由對(duì)聚硫與過

反應(yīng)制得的基本樹脂組成。用于制備據(jù)亞基風(fēng)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）℃。

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原文如下：

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§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.

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（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.

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（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.

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（c） Specifications. The glass transition temperature of the polymer is 360±5 °C as determined by the use of differential scanning calorimetry.

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[65 FR 15058, Mar. 21, 2000]

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