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特种橡胶的种类及特点中英文

2024/09/19 22:30:17

  抄摘自:橡胶技术网

  特种型橡胶指具有某些特殊性能的橡胶。主要有:

  ①氟橡胶。分子结构中含有氟原子的合成橡胶。通常以共聚物中含氟单元的氟原子数目来表示,如氟橡胶23,是偏二氟乙烯同三氟的共聚物。氟橡胶耐高温、耐油、耐化学腐蚀。

  ②丁腈橡胶。简称NBR,由丁二烯和共聚制得。耐油、耐老化性能好,可在120℃的空气中或在150℃的油中长期使用。此外,还具有耐水性、气密性及优良的粘结性能。

  ③硅橡胶。主链由硅氧原子交替组成,在硅原子上带有有机基团。耐高低温,耐臭氧,电绝缘性好。

  ④氯丁橡胶。简称CR,由氯丁二烯聚合制得。具有良好的综合性能,耐油、耐燃、耐氧化和耐臭氧。但其密度较大,常温下易结晶变硬,贮存性不好,耐寒性差。

  ⑤聚硫橡胶。由二卤代烷与碱金属或碱土金属的多硫化物缩聚而成。有优异的耐油和耐溶剂性,但强度不高,耐老化性、加工性不好,有臭味,多与丁腈橡胶并用。此外,还有聚氨酯橡胶、氯醇橡胶、丙烯酸酯橡胶等。

  Special type rubber that has some special properties ofthe rubber. Are:

  ① fluorinerubber. Containing fluorine atoms in the molecular structure of syntheticrubber. Usually fluorinated copolymer unit, said the number of fluorine atoms,such as fluorine rubber, 23, is a vinylidene fluoride copolymers withchlorotrifluoroethylene. Viton high temperature, oil resistance, chemicalcorrosion.

  ② nitrilerubber. Referred to as the NBR, the butadiene and acrylonitrile copolymerobtained. Oil, anti-aging properties, and can be at 120 ℃ 150 ℃ in air oroil in the long-term use. In addition, it also has water resistance, airtightness and excellent bonding properties.

  ③ siliconerubber. Main chain composed of alternating silicon and oxygen atoms in thesilicon atoms with organic groups. High temperature resistance, ozoneresistance, electrical insulation.

  ④ neoprene.Short CR, obtained by the polymerization of chloroprene. Has a good overallperformance, oil, fire, resist oxidation and ozone. But its high density, easyto crystallize at room temperature hardening, storage is bad, bad cold.

  ⑤polysulfide rubber. By two alkyl halide with alkali l or alkaline earthl polysulfides from condensation. Has excellent oil and solvent resistance,but the intensity is not high, anti-aging, processing is bad, smell, and usedmore with nitrile rubber. In addition, polyurethane rubber, epichlorohydrinrubber, acrylic rubber.

  橡胶加工基本过程包括塑炼、混炼、压延或挤出、成型和硫化等基本工序,每个工序针对制品有不同的要求,分别配合以若干辅助操作。为了能将各种所需的配合剂加入橡胶中,生胶首先需经过塑炼提高其塑性;然后通过混炼将炭黑及各种橡胶助剂与橡胶均匀混合成胶料;胶料经过压出制成一定形状坯料;再使其与经过压延挂胶或涂胶的纺织材料(或与金属材料)组合在一起成型为半成品;经过硫化又将具有塑性的半成品制成高弹性的最终产品。

  The basic process of rubber processing, including plasticrefining, mixing, rolling or extrusion, molding and curing, and other basicprocesses, each process has different requirements for the products were inline with the number of auxiliary operations. To be able to add all thenecessary ingredients in rubber, raw rubber first need to improve theirplasticity after plasticating; then mixing the carbon black and rubberchemicals and synthetic rubber materials rubber evenly mixed; plastic materialthrough pressure A blank made of a certain shape; then linked it with glue oradhesive through the calendar of textile material (or l) togetherforming the semi-finished products; the final after the semi-sulfide in turnhas made of flexible plastic end-products .

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