Method for emulsifying dioctyl sebacate

A dioctyl sebacate, non-ionic technology, applied in the field of polymer compound processing, can solve the problem that dioctyl sebacate cannot be directly added to natural latex, etc., and achieves obvious plasticizing effect and good compatibility. , The effect of product stability

Active Publication Date: 2018-11-02
海南省先进天然橡胶复合材料工程研究中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the deficiencies in the prior art, the present invention proposes a method for emulsifying dioctyl sebacate, which effectively solves the problem that dioctyl sebacate cannot be directly added to natural rubber latex, and adopts sebacic acid of the present invention Dioctyl ester, the plasticizing effect is more obvious

Method used

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  • Method for emulsifying dioctyl sebacate
  • Method for emulsifying dioctyl sebacate
  • Method for emulsifying dioctyl sebacate

Examples

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Embodiment 1

[0019] Sequentially add dioctyl sebacate and non-ionic surfactant into the stirring tank, heat to 75°C, stir for 10 minutes to dissolve, and the rotation speed is 2000r / min. After dissolving, keep the rotation speed constant, add pure water at 30°C while stirring at room temperature, so that the mass fraction of dioctyl sebacate is 25%, and complete the addition within 3-5 minutes. Then continue to stir for 80min to successfully emulsify dioctyl sebacate. Wherein, the mass ratio of dioctyl sebacate and nonionic surfactant is 4:1, and described nonionic surfactant is the mixture of Span 60 and Tween 60, the mixture of Span 60 and Tween 60 The mass ratio is 0.45:0.55.

Embodiment 2

[0021] Sequentially add dioctyl sebacate and non-ionic surfactant into the stirring tank, heat to 80°C, stir for 10 minutes to dissolve, and the rotation speed is 3500r / min. After dissolving, keep the rotation speed constant, add pure water at 35°C while stirring at room temperature, so that the mass fraction of dioctyl sebacate is 40%, and complete the addition within 3-5 minutes. Stirring was then continued for 90 minutes to successfully emulsify dioctyl sebacate. Wherein, the mass ratio of dioctyl sebacate and nonionic surfactant is 3:1, and described nonionic surfactant is the mixture of Span 60 and Tween 60, the mixture of Span 60 and Tween 60 The mass ratio is 0.45:0.55.

Embodiment 3

[0023] Sequentially add dioctyl sebacate and non-ionic surfactant into the stirring tank, heat at 60°C, stir for 5 minutes to dissolve, and the rotation speed is 500r / min. After dissolving, keep the rotation speed constant, add pure water at 25°C while stirring at room temperature, so that the mass fraction of dioctyl sebacate is 20%, and complete the addition within 3 minutes to 5 minutes. Then continue to stir for 60 minutes to successfully emulsify dioctyl sebacate. Wherein the mass ratio of dioctyl sebacate and nonionic surfactant is 5:1, and described nonionic surfactant is the mixture of Span 60 and Tween 60, the quality of Span 60 and Tween 60 The ratio is 0.3:0.7.

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Abstract

The invention discloses a method for emulsifying dioctyl sebacate. The method comprises the following steps: mixing the dioctyl sebacate and a nonionic surfactant, heating, adding water at normal temperature and stirring to successfully emulsify the dioctyl sebacate. By the method, the emulsified dioctyl sebacate product is stable and uniform, and oil floating and layering phenomena are avoided after the mulsified dioctyl sebacate product is placed for 12 months. After the product and natural rubber are mixed and vulcanized to form vulcanized rubber, the physical property is changed certainly,the Shore A hardness is 40 to 43 degrees, the tensile strength is 16.15 to 18.10 MPa, and the elongation at break reaches to 795 to 830 percent; the dioctyl sebacate emulsified by the method has remarkable plasticizing effect; the dioctyl sebacate and the rubber latex have high compatibility; and sweating phenomenon is avoided.

Description

technical field [0001] The invention relates to the technical field of polymer compound processing, in particular to a method for emulsifying dioctyl sebacate. Background technique [0002] Dioctyl sebacate is a colorless or slightly yellow oily liquid, which belongs to the dibasic fatty acid ester plasticizer and is a plasticizer in the plastic industry. It has high plasticizing efficiency, low volatility, and excellent cold resistance. It also has good heat resistance, light resistance and electrical insulation, and has good lubricity when heated, which makes the product look and feel good. It is especially suitable for making cold-resistant wire and cable materials, artificial leather, films and other products. Can be used as lubricating oil and synthetic rubber softener. However, dioctyl sebacate has poor compatibility with natural rubber latex, poor oil resistance, high mobility, easy to be extracted by hydrocarbons, and poor water resistance. Therefore, it is often us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/205C08L7/00C08K5/11
CPCC08J3/2053C08J2307/02C08K5/11
Inventor 冯富强陈垂生李德新唐海龙白先权李振华丁爱武袁意朱德创卓容燕乔坤吴文康
Owner 海南省先进天然橡胶复合材料工程研究中心有限公司
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