| 配合体系对低温氟橡胶胶料性能的影响 |
| Effect of Compounding Systems on Properties of Low-temperature Fluororubber Compounds |
| 投稿时间：2021-07-02 修订日期：2021-07-07 |
| DOI：10.12136/j.issn.1000-890X.2022.10.0739 |
| 中文关键词: 低温氟橡胶 补强体系 硫化体系 吸酸体系 物理性能 压缩永久变形 脆性温度 低温回缩试验 |
| 英文关键词: low-temperature fluororubber reinforcing system curing system acid absorption system tensile property compression set brittleness temperature low temperature retraction test |
| 基金项目:山东省自然科学基金资助项目（ZR2020KE054） |
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| 中文摘要: |
| 以国产低温氟橡胶（牌号CG-FLT）为基体，研究配合体系（补强体系、硫化体系和吸酸体系）对低温氟橡胶胶料（以下简称氟橡胶胶料）性能的影响。结果表明：小粒径炭黑与大粒径炭黑并用可以使氟橡胶胶料获得优异的拉伸性能和较低的脆性温度；随着炭黑用量增大，氟橡胶胶料的压缩永久变形增大，小粒径炭黑对压缩永久变形增大的作用更为明显；硫化剂用量和种类对氟橡胶胶料的脆性温度影响不大；氟橡胶胶料的硫化剂用量不宜过大，以3份硫化剂双25为宜，其交联效率高于等效引发效率用量的硫化剂DCP；相较于氧化镁/氢氧化钙吸酸体系，氟橡胶胶料的吸酸体系优先选用氧化锌；氟橡胶胶料回缩10%的温度TR10基本不受补强体系、硫化体系和吸酸体系的影响，其由氟橡胶基体的玻璃化温度决定。 |
| 英文摘要: |
| Taking domestic low-temperature fluororubber（brand CG-FLT） as the matrix，the effects
of compounding systems，such as reinforcing system，curing system and acid absorption system，on the
properties of low-temperature fluororubber compounds（hereinafter referred to as fluororubber compounds）
were investigated. The results showed that，the fluororubber compounds could obtain excellent tensile
properties and low brittleness temperature by combining small and large particle size carbon black. With the
increase of the amount of carbon black，the compression sets of the fluororubber compounds increased. The
effect of small particle size carbon black on the increase of compression sets was more obvious. The amount
and type of curing agent had little effect on the brittleness temperatures of the fluororubber compounds. The
amount of curing agent of the fluororubber compounds should not be too large，3 phr of 2，5-dimethyl-2，
5-bis- （tert-butylperoxy ） hexane was appropriate，and its crosslinking efficiency was higher than that
of the amount of curing agent DCP with the equivalent initiation efficiency. Compared with magnesium
oxide/calcium hydroxide absorption system，zinc oxide was preferred for the acid absorption system of
the fluororubber compounds. The temperature TR10 at which fluororubber compounds retracted by 10%
was basically not affected by the reinforcing system，curing system and acid absorption system，which was
determined by the glass transition temperature of the fluororubber matrix. |
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