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Polypropylene mixture, and preparation method and application thereof

A mixture and polypropylene technology, applied in the direction of single-component polyolefin rayon, textiles, papermaking, non-woven fabrics, etc., can solve the problems of low melt index, low grammage, impact, etc., and achieve high-speed hydrostatic pressure Effect

Active Publication Date: 2012-09-19
BEIJING EXPERT IN THE DEV OF NEW MATERIALCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the melt index of traditional homopolypropylene used in the production of melt-blown non-woven fabrics is low, generally in the range of 50-200g / 10min, which makes large-scale non-woven fabric production equipment produce low-weight, high-hydrostatic-pressure melt-blown Non-woven products have been affected to a certain extent

Method used

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  • Polypropylene mixture, and preparation method and application thereof
  • Polypropylene mixture, and preparation method and application thereof
  • Polypropylene mixture, and preparation method and application thereof

Examples

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Embodiment approach

[0020] According to another preferred embodiment of the present invention, the method also includes adding dibenzylidene sorbitol and thiodipropionic acid di(octacyl) before, during and after the contact reaction in one or more time periods. ) ester, thereby improving the heat aging resistance of the final prepared polypropylene compound. In the method provided by the present invention, the heat aging resistance of the polypropylene mixture can be synergistically improved by adding dibenzylidene sorbitol and di(octadecyl)thiodipropionate. When only dibenzylidene sorbitol or di(octadecyl)thiodipropionate is added, the heat aging resistance of the polypropylene mixture prepared in this way will be obviously reduced. In the present invention, the addition amount of dibenzylidene sorbitol and di(octadecyl)thiodipropionate is not particularly limited. However, in order to further improve the heat aging resistance of the polypropylene mixture prepared finally, the addition of diben...

Embodiment 1

[0031] This example is used to illustrate the polypropylene compound provided by the present invention and its preparation method.

[0032] Such as figure 1As shown, 100 parts by weight of homopolypropylene (melt index is 10g / 10min, purchased from polypropylene powder 040 of Sinopec Cangzhou Branch), 0.5 parts by weight of dibenzylidene sorbitol (purchased from Beijing Daxing County Xingyu Chemical Factory), 0.5 parts by weight of di(octadecyl)thiodipropionate (purchased from Tianjin Lisheng Chemical Co., Ltd.), 0.05 parts by weight of calcium stearate (purchased from Xingyu, Daxing County, Beijing Chemical plant), 0.03 parts by weight of antioxidant 1010 (purchased from Xingyu Chemical Factory, Daxing County, Beijing, the main component is tetrakis [methyl-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester) and 0.07 parts by weight of antioxidant 168 (purchased from Xingyu Chemical Factory, Daxing County, Beijing, the main component is three (2,4-di-t...

Embodiment 2

[0038] This example is used to illustrate the polypropylene compound provided by the present invention and its preparation method.

[0039] The polypropylene mixture was prepared according to the method of Example 1, except that no dibenzylidene sorbitol was added, thereby preparing the polypropylene mixture A2.

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Abstract

The invention discloses a preparation method of a polypropylene mixture. The method comprises the step of subjecting homo polypropylene and di-tert-butyl peroxide to contact reaction. The invention also provides the polypropylene mixture prepared by the method and application of the polypropylene mixture during preparation of melt blown nonwoven fabric. According to the method, the melt index of the homo polypropylene can be increased remarkably, so that the polypropylene mixture prepared by the method is suitable for preparation of the melt blown nonwoven fabric, besides, melt blown nonwoven fabric having low gram weight / unit area and high hydrostatic pressure can be produced rapidly by usage of the polypropylene mixture.

Description

technical field [0001] The invention relates to a method for preparing a polypropylene compound, the polypropylene compound prepared by the method, and the application of the polypropylene compound in the preparation of melt-blown non-woven fabrics. Background technique [0002] Melt-blown non-woven fabrics are resistant to tensile deformation, and have high breaking strength and elongation at break. They are widely used in medical protection, clothing, home decoration, industrial fabrics, construction, civil engineering and agriculture. and other fields. [0003] Usually, the raw materials for the production of melt-blown non-woven fabrics mainly include homopolypropylene. The reason is that homopolypropylene is relatively cheap, has excellent rigidity, moisture resistance, heat resistance and good formability. [0004] However, the melt index of traditional homopolypropylene used in the production of melt-blown non-woven fabrics is low, generally in the range of 50-200g / 1...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K5/14D04H5/06D01F6/46
Inventor 孙海
Owner BEIJING EXPERT IN THE DEV OF NEW MATERIALCO
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