Microporous foaming polypropylene fiber and preparation method thereof

A foamed polypropylene and microporous technology, applied in fiber processing, single-component polyolefin artificial filament, filament/thread forming, etc., can solve the problems of low production efficiency, harsh preparation conditions, etc., and achieve production cost Low cost, good economic and social benefits, and excellent operability

Active Publication Date: 2011-09-07
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation conditions of this method are relatively harsh and the production efficiency is low.

Method used

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  • Microporous foaming polypropylene fiber and preparation method thereof
  • Microporous foaming polypropylene fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In this embodiment, polypropylene resin with an MFI of 35g / 10min is used as a raw material, and AC chemical foaming agent accounting for 1.0% by weight of the raw material, silicon dioxide accounting for 0.2% by weight of the raw material, and 1% red color masterbatch are added. , fed into the screw extruder according to the set ratio, the temperature of each area of ​​the screw is 180-200°C, and the pressure is 10Mpa, melted and mixed through the screw extruder, so that the chemical foaming agent is in a critical state about to be decomposed, measured by The pump is metered stably, and it is continuously fed into the spinning assembly with a temperature of 200°C and an assembly pressure of 15Mpa, and it is sprayed out from the spinneret hole; during the rapid pressure drop, the chemical foaming agent decomposes and gasifies, forming a microporous extrusion The microporous extruded material enters a cooling water tank with a temperature of 20°C after passing through an a...

Embodiment 2

[0021] In this embodiment, polypropylene resin with an MFI of 20g / 10min is used as a raw material, and AC chemical blowing agent accounting for 2.0% by weight of the raw material, silicon dioxide accounting for 0.5% by weight of the raw material, and 2% yellow masterbatch are added. , fed into the screw extruder according to the set ratio, the temperature of each area of ​​the screw is 200-230°C, and the pressure is 25Mpa, melted and mixed through the screw extruder, so that the chemical foaming agent is in a critical state about to decompose, measured by The pump is metered stably, and it is continuously fed into the spinning assembly with a temperature of 220°C and an assembly pressure of 15Mpa, and it is sprayed out from the spinneret hole; during the rapid pressure drop, the chemical foaming agent decomposes and gasifies, forming a microporous extrusion The microporous extruded material enters a cooling water tank with a temperature of 30°C after passing through an air laye...

Embodiment 3

[0023] This embodiment adopts the polypropylene resin that MFI is 50g / 10min as raw material, adds the AC chemical foaming agent that accounts for 0.2% by weight percentage of raw material, accounts for 0.05% talcum powder that accounts for raw material weight percentage, 3% green color masterbatch, according to The set ratio is fed into the screw extruder. The temperature of each area of ​​the screw is 160-200°C and the pressure is 5Mpa. Through the screw extruder, it is melted and mixed to make the chemical foaming agent in a critical state about to be decomposed, and stabilized by the metering pump. Metering, continuously feeding into the spinning assembly with a temperature of 180°C and a component pressure of 10Mpa, and spraying it out from the spinneret hole; during the rapid pressure drop process, the chemical foaming agent decomposes and gasifies to form a microporous extrudate. The microporous extruded material passes through an air layer and then enters a cooling water...

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Abstract

The invention discloses a microporous foaming polypropylene fiber and a preparation method thereof. In the method, a polypropylene resin of which the melt index is 20-50g/10min is used as a raw material, and a chemical foaming agent, assistants and master batches are added, wherein the chemical foaming agent, the assistants and the master batches respectively account for 0.2-2wt%, 0.05-0.5wt% and1-5wt% of the raw material, and the decomposition temperature of the chemical foaming agent is 180-250 DEG C. In the invention, spinning and drawing processes are completed in one step, the operatingperformance of the production process is fine, the production cost is low, and better economic and social benefits are achieved. Besides, the fiber has light weight, rebound elasticity, breathabilityand skin adaptability, and still maintains favorable mechanical properties.

Description

technical field [0001] The invention relates to a microporous foamed polypropylene fiber and a preparation method thereof. It belongs to the chemical fiber field. Background technique [0002] As an important variety of the four major synthetic fibers, polypropylene has been greatly developed since industrialization due to its rich source of raw material polypropylene, simple production and spinning process, low comprehensive energy consumption, no pollution and wide application. Used in home textiles, decorations, sanitary products, non-woven fabrics and other fields. [0003] When fabrics made of polypropylene are used for clothing and home textiles, due to the "waxy feeling" of polypropylene, when it comes into contact with human skin, it will cause discomfort. For example, the edge wrapping of pillowcases, bed mats, cushions, floor mats, pillow mats, tatami mats, etc. woven with rush is mostly made of polypropylene webbing, and this type of webbing is not only skin-fri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/46D01D5/247
Inventor 王秀华陈文兴姚玉元
Owner ZHEJIANG SCI-TECH UNIV
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