Device and method for preparing ultra-long aging-resistant melt-blown level polypropylene material and obtained material thereof

A polypropylene material and polypropylene technology, applied in the field of polymer material preparation and processing, can solve the problems of short service life and poor aging resistance of melt-blown polypropylene, so as to solve the problem of poor aging resistance, eliminate side reactions, improve The effect of degradation efficiency

Active Publication Date: 2020-06-19
道恩高材(北京)科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of equipment and method for preparing melt-blown grade polypropylene and the obtained ultra-long aging-resistant melt-blown grade polypropylene material, so as to solve the problem of poor aging resistance of melt-blown grade polypropylene produced in the prior art. The problem of short life, the preparation of ultra-long aging-resistant melt-blown polypropylene

Method used

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  • Device and method for preparing ultra-long aging-resistant melt-blown level polypropylene material and obtained material thereof
  • Device and method for preparing ultra-long aging-resistant melt-blown level polypropylene material and obtained material thereof
  • Device and method for preparing ultra-long aging-resistant melt-blown level polypropylene material and obtained material thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Example 1: Preparation of ultra-long aging-resistant meltblown grade polypropylene with a melt flow rate of 150

[0064] The mass fraction of the degradation agent needs to be finally determined through multiple tests according to the requirements of the melt flow rate of the material. Other raw materials and mass fractions are shown in Table 1 below:

[0065] Table 1 Example 1 Raw materials and mass fraction

[0066] raw material Polypropylene 1 Polypropylene 2 Antioxidant 1010 Antioxidant 168 Degradant 101 parts by mass 100 2 0.2 0.2 Obtained by experiment

specific Embodiment approach

[0067] Specific embodiment: the process route is as attached figure 2 As shown, polypropylene 1 is placed in the first online feeding bin 2, and is added to a reactive twin-screw extruder with an aspect ratio of 56 through a feed hopper 5 at a uniform rate of 100 kg / h through a first loss-in-weight scale 3. In 7, the screw speed of the reactive twin-screw extruder is 250 rpm, and the degradation agent 101 in the liquid storage tank 18 passes through the liquid loss-in-weight scale 17 at the output of 0.1 kg / h through the reactive twin-screw extruder No. 1. The liquid injection port 6 of the third zone is injected into the reaction-type twin-screw extruder 7 at a constant speed, and the antioxidant 1010 and the antioxidant 168 are added to the mixer 1 at the mass ratio (1:1) shown in Table 1. Mixing at 100 rpm in the machine for 5min, then the antioxidant mixture was added to the pre-dispersed twin-screw extruder 10 with an aspect ratio of 32 at a uniform speed through the sec...

Embodiment 2～5

[0081] Examples 2 to 5: The mass fraction of the degrading agent needs to be finally determined through multiple tests according to the requirements of the melt index. The specific implementation method is the same as that of Example 1, and the raw materials and proportions are shown in Tables 5-8.

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Abstract

The invention discloses a device and method for preparing an ultra-long aging-resistant melt-blown level polypropylene material and the obtained material thereof. The device for preparing the ultra-long aging-resistant melt-blown level polypropylene material comprises a reactive twin-screw extruder, wherein a first polypropylene feeding device is arranged above a main feeding port of the reactivetwin-screw extruder; a pre-dispersed twin-screw extruder is connected to a lateral feeding port of the reactive twin-screw extruder; and an anti-aging auxiliary agent feeding device and a second polypropylene feeding device are arranged above a feeding port of the pre-dispersed twin-screw extruder separately. Through brand-new design of a process route and the device, an anti-aging auxiliary agentis added online after polypropylene degradation reaction is completed, so that side reaction that the anti-aging auxiliary agent captures free radicals generated by peroxide is eliminated, the degradation efficiency of the peroxide is improved, meanwhile, the loss of the anti-aging auxiliary agent is greatly reduced, a long-term anti-aging effect of the material is obviously improved, and the problems of poor anti-aging performance and short service life of melt-blown polypropylene prepared in the prior art are solved.

Description

technical field [0001] The invention relates to the field of preparation and processing of polymer materials, in particular to a device and method for preparing ultra-long aging-resistant melt-blown polypropylene materials and the obtained materials. Background technique [0002] Since the 1960s, after ExxonMobil developed melt-blown polypropylene and applied it in nonwovens, melt-blown polypropylene has grown rapidly around the world, maintaining an annual growth rate of 12% to 18%. Meltblown polypropylene nonwovens have excellent performance in filtration, antibacterial, adsorption, warmth retention, and waterproofing, which are unmatched by other nonwovens. Especially the laminated composite material of melt-blown polypropylene non-woven fabric and spun-laid non-woven fabric, namely SMS composite fabric, is widely used in masks, protective clothing, surgical gowns, sanitary napkins and diaper fabrics and filter materials. [0003] Existing technology for preparing meltbl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B9/06B29C48/285C08L23/12
CPCB29B9/06B29C48/286B29C48/297C08L23/12C08L2205/025B29B7/46B29B7/487B29B7/488B29B7/603B29B7/748B29B7/7485B29B7/94B29B9/16
Inventor 陈文泉卢咏来田洪池张世甲王媛徐雪梅韩吉斌张立群
Owner 道恩高材(北京)科技有限公司
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