Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Modified ultra-high molecular weight polyethylene fiber forming special material, and preparation method and melt spinning fiber forming method thereof

An ultra-high molecular weight, melt-spinning technology, applied in the field of high-strength fiber materials, can solve problems such as extrusion distortion, adhesion-slip flow, etc., achieve good mechanical properties, uniform and dense fiber internal structure, and meet fineness and strength requirements Effect

Active Publication Date: 2018-10-16
BEIJING UNIV OF CHEM TECH
View PDF7 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the melt spinning process, the size of the spinneret flow channel is much smaller than the mold of the pipe, sheet and other forming equipment, and the melt is subject to strong shear, which is easy to produce adhesion-slip flow and cause extrusion distortion. Therefore, it should be obtained from Study on the raw material modification scheme suitable for UHMWPE melt spinning from the perspective of microstructure

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
  • Modified ultra-high molecular weight polyethylene fiber forming special material, and preparation method and melt spinning fiber forming method thereof
  • Modified ultra-high molecular weight polyethylene fiber forming special material, and preparation method and melt spinning fiber forming method thereof
  • Modified ultra-high molecular weight polyethylene fiber forming special material, and preparation method and melt spinning fiber forming method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Modified ultra-high molecular weight polyethylene fiber-forming special material, raw material composition: select ultra-high molecular weight polyethylene with a viscosity average molecular weight of 1.5 million, high-density polyethylene (melt flow rate 5~7g / 10 min), antioxidant, modified Nano-silica (particle size 30nm), the weight ratio is 60%, 37.2%, 1%, 1.8%, respectively, through high-mixer blending and twin-screw extruder mixing, granulation, to prepare melt-spun pellets.

[0036] The specific modification treatment method of the modified nano-silica is as follows: bake the nano-silica at an oven temperature of 80° C. for 20 minutes; disperse the dried nano-silica in absolute ethanol, add other The titanate coupling agent with a mass fraction of 1.5% is ultrasonically dispersed in a water bath at 80°C for 40 minutes, and the ethanol is completely volatilized at an oven temperature of 85°C to obtain a modified nano-silica, which has a good dispersion effect in po...

Embodiment 2

[0039] Modified ultra-high molecular weight polyethylene fiber-forming special material, raw material composition: select ultra-high molecular weight polyethylene with a viscosity average molecular weight of 1.5 million, high-density polyethylene (melt flow rate 5~7g / 10 min), antioxidant, modified Nano-silica (particle size 30nm), modified nano-titanium dioxide (particle size 100nm), the weight ratio is 70%, 26.5%, 1%, 1.5%, 1%, respectively, through high-mixer blending and twin-screw extrusion Exit the machine to knead and granulate to prepare melt spinning pellets.

[0040] The specific modification treatment method of the modified nano-silica or modified nano-titanium dioxide is as follows: bake the nano-silica or modified nano-titanium dioxide at an oven temperature of 80° C. for 20 minutes; Or the modified nano-titanium dioxide is completely dispersed in absolute ethanol, and a silane coupling agent with a mass fraction of 1.5% is added, ultrasonically dispersed in a wate...

Embodiment 3

[0043] Modified ultra-high molecular weight polyethylene fiber-forming special material, raw material composition: select ultra-high molecular weight polyethylene with a viscosity average molecular weight of 1.5 million, high-density polyethylene (melt flow rate 5~7g / 10 min), antioxidant, modified Nano-silica (particle size 30nm), modified nano-titanium dioxide (particle size 100nm), the weight ratio is 76%, 20%, 1%, 1.8%, 1.2%, respectively, through high-mixer blending and twin-screw extrusion Exit the machine to knead and granulate to prepare melt spinning pellets.

[0044] The specific modification treatment method of the modified nano-silica or modified nano-titanium dioxide is as follows: bake the nano-silica or modified nano-titanium dioxide at an oven temperature of 80° C. for 20 minutes; Or the modified nano-titanium dioxide is completely dispersed in absolute ethanol, and a silane coupling agent with a mass fraction of 1.5% is added, ultrasonically dispersed in a wate...

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 rateaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a modified ultra-high molecular weight polyethylene fiber forming special material, and a preparation method and a melt spinning fiber forming method thereof, and belongs to the technical field of high quality fiber materials. The special material is prepared from the following ingredients: ultra-high molecular weight polyethylene, high-density polyethylene, antioxygen andmodified nanometer inorganic filler. The melt spinning fiber forming method for the modified ultra-high molecular weight polyethylene fiber forming special material comprises the following steps: carrying out fusion plasticization on the modified ultra-high molecular weight polyethylene fiber forming special material through a single screw extruder, entering a spinning box body through a meteringpump device, carrying out fusion extrusion by a spinning component, and taking the heating function of a slow cooling device as an auxiliary to prepare a primary filament; S2: carrying out preliminary drawing on the primary filament obtained in S1, entering a four-level hot roller traction system to be subjected to grading drawing and sizing, and rolling through a fiber rolling device, and obtaining a finished product fiber. By use of the melt spinning fiber forming technology, middle and high strength ultra-high molecular weight polyethylene fibers can be produced at low cost, and the application of the middle and high strength ultra-high molecular weight polyethylene fibers in civilian field including labor protection, marine fishery and the like can be widely expanded.

Description

technical field [0001] The invention belongs to the technical field of high-strength fiber materials, and in particular relates to a special fiber-forming material for modified ultra-high molecular weight polyethylene, a preparation method thereof, and a melt-spinning fiber-forming method. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) fiber is a high-strength special fiber, and its products play a pivotal role in safety, protection, aviation, aerospace, national defense equipment, vehicle manufacturing, shipbuilding, sports and other fields. At present, the method of industrialized preparation of UHMWPE fiber in the world is mainly gel spinning method, that is, the UHMWPE raw material is dissolved in a solvent to form a gel solution for spinning. According to the different solvents used, it can be divided into: dry route (using decahydronaphthalene High volatility solvents, represented by DSM / Toyobo) and wet route (using low volatility solve...

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
IPC IPC(8): D01F6/46D01F1/10D01D10/02D01D5/16D01D5/08
CPCD01D5/08D01D5/16D01D10/02D01F1/10D01F6/46
Inventor 薛平刘丽超王非王苏炜付丽
Owner BEIJING UNIV OF CHEM TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com