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

Micro-foaming polyamide magnetic plastic based on organic fluorine modification and preparation method of micro-foaming polyamide magnetic plastic

A fluorine-modified and micro-foaming technology, which is applied in the field of micro-foamed polyamide magnetic plastics and its preparation, can solve the problems of large size changes, poor surface quality, and reduced mechanical properties.

Pending Publication Date: 2021-05-28
GUIZHOU MATERIAL IND TECH INSTITUE
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems that the existing PA materials described in the above prior art have large dimensional changes, reduced mechanical properties, and poor surface quality due to their strong water absorption. The present invention provides a Micro-foamed polyamide magnetic plastics based on organic fluorine modification and preparation method thereof, by adding pro-CO in the formula 2 Additives and phenolic hydroxyl resins are used to regulate and improve the foaming effect and water absorption of PA composite materials. The preparation method adopts chemical foaming method and injection molding process, which is easy to operate and environmentally friendly.

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
  • Micro-foaming polyamide magnetic plastic based on organic fluorine modification and preparation method of micro-foaming polyamide magnetic plastic
  • Micro-foaming polyamide magnetic plastic based on organic fluorine modification and preparation method of micro-foaming polyamide magnetic plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A micro-foamed polyamide magnetic plastic based on organic fluorine modification. The magnetic plastic is made of basic raw materials and added raw materials. The basic raw materials are composed of the following raw material components in mass percentages: PA resin 70%, pro-CO 2 10% additives, 10% phenolic hydroxyl resin, 10% fillers, the added raw materials include the following components: compatibilizer, nucleating agent, foaming agent and other additives, the mass percentage of each added raw material component and the basic raw material The proportions are: compatibilizer 0.05%, nucleating agent 0.01%, foaming agent 0.05%, and other additives 0.02%.

[0030] Among them, the PA resin is PA6; pro-CO 2 The additive is tetrafluoroethylene-hexafluoropropylene copolymer; the phenolic hydroxyl resin is general-purpose phenolic resin; the filler is ferrite magnetic powder; the compatibilizer is maleic anhydride graft compatibilizer; the nucleating agent is silicon oxide; ...

Embodiment 2

[0038] A micro-foamed polyamide magnetic plastic based on organic fluorine modification. The magnetic plastic is made of basic raw materials and added raw materials. The basic raw materials are composed of the following raw material components in mass percentages: PA resin 80%, pro-CO 2 3% additives, 5% phenolic hydroxyl resin, 12% fillers, the added raw materials include the following components: compatibilizer, nucleating agent, foaming agent and other additives, the mass percentage of each added raw material component and the basic raw material The proportions are: compatibilizer 5%, nucleating agent 2%, blowing agent 4%, other additives 2%.

[0039] Among them, the PA resin is PA66; pro-CO 2 The additive is ethylene-chlorotrifluoroethylene copolymer; the phenolic hydroxyl resin is lignin resin; the filler is rare earth permanent magnetic powder; the compatibilizer is maleic anhydride graft compatibilizer; the nucleating agent is sorbitol nucleating agent; The foaming agen...

Embodiment 3

[0047] A micro-foamed polyamide magnetic plastic based on organic fluorine modification. The magnetic plastic is made of basic raw materials and added raw materials. The basic raw materials are composed of the following raw material components in mass percentages: PA resin 60%, pro-CO 2 20% additives, 10% phenolic hydroxyl resin, 10% fillers, the added raw materials include the following components: compatibilizer, nucleating agent, foaming agent and other additives, the mass percentage of each added raw material component and the basic raw material The proportions are: compatibilizer 1.5%, nucleating agent 0.08%, foaming agent 1%, and other additives 1.5%.

[0048] Among them, PA resin is branched PA; pro-CO 2 The additive is polyvinylidene fluoride; the phenolic hydroxyl resin is bisphenol A type boron phenolic resin; the filler is metal oxide; the compatibilizer is maleic anhydride graft compatibilizer; the nucleating agent is rosin nucleating agent; Foaming agent is carbo...

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

No PUM Login to View More

Abstract

The invention discloses a micro-foaming polyamide magnetic plastic based on organic fluorine modification and a preparation method, wherein the magnetic plastic is prepared from a basic raw material and an additive raw material, the basic raw material is composed of the following raw material components: PA resin, a CO2-philic additive, phenolic hydroxyl group-containing resin and a filler; the added raw materials comprise the following components: a compatilizer, a nucleating agent, a foaming agent and other auxiliaries, and the CO2-philic additive is added to regulate and control dissolution and diffusion of CO2 in a PA resin matrix, reduce gas escape, improve the utilization rate of the foaming agent and save the material cost; the phenolic hydroxyl-containing resin is added to reduce the water absorption of the PA resin, so that the defects of poor product size stability, poor surface quality, poor foaming effect, reduced mechanical property and the like caused by high water absorption of the PA composite material are overcome; due to the addition of the magnetic powder, the PA plastic is endowed with magnetic performance, so that the PA plastic becomes a novel polymer functional material, and the application range of the micro-foaming PA composite material in the fields of automobiles, electronics, electrics and the like is further expanded.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a micro-foamed polyamide magnetic plastic modified by organic fluorine and a preparation method thereof. Background technique [0002] Polyamide is commonly known as nylon, the English name Polyamide, or PA for short, is the general term for thermoplastic resins containing repeated amide groups “—[NHCO]—” on the main molecular chain. The micro-foaming injection molding process is an innovative precision injection molding technology. The micro-foaming injection molding process breaks through many limitations of traditional injection molding, which can significantly reduce the weight of the part, shorten the molding cycle, and greatly improve the quality of the part. Warpage deformation and dimensional stability, the micro-foaming injection molding process has great advantages in the production of high-quality precision products. [0003] Micro-foamed PA mate...

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 Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08L27/18C08L61/06C08L23/08C08L97/00C08L77/00C08L27/16C08L61/14C08L27/12C08K3/22C08K3/00C08J9/10C08J9/08
CPCC08J9/102C08J9/0066C08J9/0061C08J9/107C08J9/08C08J2377/02C08J2427/18C08J2461/06C08K2003/2265C08K2201/01C08J2203/04C08J2377/06C08J2423/08C08J2497/00C08K3/00C08J2377/00C08J2427/16C08J2461/14C08J2427/12C08J2203/02
Inventor 李胜男蒋团辉朱能贵曾祥补沈超何力龚维张纯
Owner GUIZHOU MATERIAL IND TECH INSTITUE
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