Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Method for producing polyurethane toughness-reinforcing cast form nylon composite material

A technology for casting nylon and composite materials, which is applied in the field of preparation of polyurethane toughened casting nylon composite materials, can solve problems such as easy brittle cracking, large brittleness, and application field limitations, and achieve high mechanical strength, improved mechanical strength, friction The effect of improving the chemical properties and antistatic properties

Inactive Publication Date: 2009-08-12
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its high crystallinity makes the material more brittle, especially under low temperature conditions, which limits its application field to a certain extent.

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
  • Method for producing polyurethane toughness-reinforcing cast form nylon composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Preparation of isocyanate-terminated polyurethane prepolymer:

[0017] A) Weigh 100 parts of polytetrahydrofuran ether (abbreviated as PTMG) in parts by mass (hereinafter all in parts by mass), and dehydrate at 100°C-150°C and 0.01-0.1Pa pressure for 30-60min. Get the processed polyether, standby;

[0018] B) 16 parts of toluene diisocyanate (abbreviated as TDI) are weighed for subsequent use;

[0019] C) Heating the treated PTMG to 70° C., adding metered TDI to carry out polymerization reaction, and reacting for 120-240 minutes to obtain an isocyanate-terminated polyurethane prepolymer with a free isocyanate content of 3%. spare;

[0020] (2) Weigh 200 parts of caprolactam monomer, divide one-half into a container and heat to about 120°C to melt the material, vacuumize and dehydrate until no water flows out, and the vacuum degree is 10 -1 ~10 -3 Pa. spare;

[0021] (3) Mix 100 parts of (2) dehydrated caprolactam liquid with 10 parts of polyurethane prepolymer...

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
diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of polyurethane plasticizing monomer casting nylon compound material. The material is made through pouring the raw material of polyurethane prepolymer, and caprolactam, etc. The main performance of the material is characterized in that the mechanical strength is improved, the tensile fracture elongation rate is increased along with increasing of the use amount of the polyurethane prepolymer, the impact strength is enhanced along with the increasing of the use amount of the polyurethane prepolymer, and the tribology performance and the antistatic performance are improved remarkably.

Description

technical field [0001] The invention relates to a preparation method of polyurethane toughened cast nylon composite material. Background technique [0002] Cast nylon (that is, MC nylon) is to use the molten caprolactam monomer as a catalyst under normal pressure, together with activators and other additives, directly inject it into the mold preheated to a certain temperature. The polymerization reaction is carried out very quickly in the mold, and it condenses into a tough solid piece. Cast nylon has a high degree of polymerization, high molecular weight and crystallinity, and has better performance than other engineering plastics. It is widely used to manufacture wear-resistant and anti-friction parts, especially for large-scale products that cannot be solved by injection molding and compression molding. In many fields, it is gradually replacing copper, aluminum, steel and other metal materials. However, its high crystallinity makes the material more brittle, especially ...

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): C08L77/02C08L75/04C08G18/10C08G69/16
Inventor 简令奇潘炳力王宏刚杨生荣
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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
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