Solid degradation agent for producing polypropylene fiber with high fusion index, and preparation method thereof

A technology of melt index and degrading agent, applied in the direction of fiber chemical characteristics, single-component polyolefin rayon, rayon manufacturing, etc., can solve the problems affecting the quality of continuous products, unstable melt index, poor uniformity, etc. Achieve the effect of improving operational safety, high effective equivalent, and improving uniformity

Active Publication Date: 2013-06-12
DALIAN XINGHUI CHEM
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since peroxides are easy to release oxygen when heated, and release a lot of heat, there is a danger of burning and explosion if there is a slight improper transportation and storage
Although very few solid peroxides are relatively safe, they are expensive
[0010] In addition, when the liquid peroxide is directly added to the polymer for viscosity reduction, the amount added is usually very small, so it is difficult to disperse the degradation agent evenly in the polymer.
If the dispersion is not uniform, it may cause the melt index of the product to be unstable and poor in uniformity, which will affect the continuity of downstream processing operations and the product quality of related products

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Solid degradation agent for producing polypropylene fiber with high fusion index, and preparation method thereof
  • Solid degradation agent for producing polypropylene fiber with high fusion index, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A kind of solid degradation agent is made up of following components by weight percentage:

[0042] Polypropylene T30S powder 87kg

[0043] 2,5-Dimethyl-2,5-bis(tert-butylperoxy)hexane 5kg

[0044] Polyethylene wax PE520 5kg

[0045] FX5911 3kg

[0046] Among them, the melt index of polypropylene T30S powder is 3-5g / 10min (230°C, 2.16kg).

[0047] Put the above raw materials into the mixer according to the ratio and mix them for 4 minutes, then send the mixture into the twin-screw extruder, melt extrusion and granulation at 120°C, and the extruded product is melted and granulated to obtain a solid degradation agent.

Embodiment 2

[0049] A kind of solid degradation agent is made up of following components by weight percentage:

[0050] Polypropylene T30S powder 83kg

[0051] 2,5-Dimethyl-2,5-bis(tert-butylperoxy)hexane 10kg

[0052] Polyethylene wax PE520 5kg

[0053] FX5911 2kg

[0054] Among them, the melt index of polypropylene T30S powder is 3-5g / 10min (230°C, 2.16kg).

[0055] Put the above raw materials into the mixer according to the ratio and mix them for 4 minutes, then send the mixture into the twin-screw extruder, melt extrusion and granulation at 120°C, and the extruded product is melted and granulated to obtain a solid degradation agent.

Embodiment 3

[0057] A kind of solid degradation agent is made up of following components by weight percentage:

[0058] Polypropylene T30S powder 78kg

[0059] 2,5-Dimethyl-2,5-bis(tert-butylperoxy)hexane 15kg

[0060] Polyethylene wax PE520 5kg

[0061] FX5911 2kg

[0062] Among them, the melt index of polypropylene T30S powder is 3-5g / 10min (230°C, 2.16kg).

[0063] Put the above raw materials into the mixer according to the ratio and mix them for 4 minutes, then send the mixture into the twin-screw extruder, melt extrusion and granulation at 120°C, and the extruded product is melted and granulated to obtain a solid degradation agent.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
melt flow indexaaaaaaaaaa
melt flow indexaaaaaaaaaa
densityaaaaaaaaaa
Login to view more

Abstract

The invention relates to a solid degradation agent for producing polypropylene fiber with high fusion index, and a preparation method thereof. The solid degradation agent comprises the following components, by weight, 74-87% of polypropylene, 5-20% of a peroxide, 4-5% of polyethylene wax PE520 and 2-3% of a PPA additive. The preparation method comprises: adding the raw materials to a mixer according to the ratio, and carrying out mixing for 4 minutes; adding the resulting mixture to a twin screw extruder; carrying out melting, extruding and pelletizing at a temperature of 120 DEG C to obtain the solid degradation agent. The solid degradation agent of the present invention completely retains the effect of the peroxide degradation agent to the PP product, the operation safeties during the transport and the use are improved, and the effective equivalent weight is high.

Description

technical field [0001] The invention relates to a solid degradation agent, in particular to a solid degradation agent for producing high melt index polypropylene products with narrow molecular weight distribution and a preparation method thereof. Background technique [0002] At present, the demand for polypropylene fibers with high melt index in the domestic market continues to increase. High-quality polypropylene fiber requires stable melt index and narrow molecular weight distribution of polypropylene products. To produce polypropylene products that meet this requirement, a degradation method is required, that is, by adding a degradation agent during the extrusion and granulation of polypropylene products with a wide molecular weight and low melt index to achieve the production of polypropylene with a narrow molecular weight distribution and a high melt index. Polypropylene products. [0003] In the process of synthesizing polypropylene, the traditional synthesis proces...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/06C08K5/14B29B9/06D01F6/46D01F1/10
Inventor 任国辉任春江
Owner DALIAN XINGHUI CHEM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap