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

High-temperature-resistant and heat-conductive nylon composite material and preparation method thereof

A technology of nylon composite materials and composite materials, which is applied in the field of high temperature resistant and thermally conductive nylon composite materials and its preparation, can solve the problems of high processing requirements, stress cracking, and high brittleness, and achieve improved mechanical properties, enhanced bridging ability, and improved toughness Effect

Active Publication Date: 2016-11-23
上海日之升科技有限公司
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN2013104674047 discloses a heat-conducting and high-temperature-resistant nylon composite material and its preparation method. The composite material is made of the following components by weight: 100 parts by weight of high-temperature nylon, 5-30 parts by weight of carbon fiber, and 20-50 parts by weight of thermally conductive filler. parts by weight, 0.2-1 parts by weight of coupling agent, 0.3-0.8 parts by weight of antioxidant, 0.5-1.5 parts by weight of lubricant, and 0.1-0.8 parts of crystallization nucleating agent; it uses high melting point PA as the matrix resin, and adds carbon fiber and inorganic The filler is used to prepare heat-conducting and high-temperature-resistant nylon composite materials. This type of material has high processing requirements and is prone to stress cracking due to its high brittleness.
Chinese patent 2016102122801 discloses a heat-conducting and high-temperature resistant nylon composite material, which is made of the following components by weight: 100 parts of high-temperature nylon, 5-15 parts of expanded graphite, 1-5 parts of finely ground graphite powder, and 0.2- 1 part, 0.3-0.8 parts of antioxidant, 0.5-1.5 parts of lubricant; the material is added with inorganic fillers to prepare heat-conducting and high-temperature-resistant nylon composite materials, which require high processing requirements and are prone to stress cracking problems due to high brittleness

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
  • High-temperature-resistant and heat-conductive nylon composite material and preparation method thereof
  • High-temperature-resistant and heat-conductive nylon composite material and preparation method thereof
  • High-temperature-resistant and heat-conductive nylon composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 Preparation of High Temperature Resistance and Thermally Conductive Nylon Composite Material (1)

[0033] (1) Dry the nylon at 110°C for 4 hours.

[0034] (2) Weigh raw materials: 100 parts of PA66, 40 parts of PA9T, 10 parts of PA1212 elastomer, 20 parts of alumina, 0.2 part of reactive flow modifier, 0.3 part of antioxidant and 0.3 part of lubricant, premixed evenly; The PA66 is a homopolymerized PA66 with a relative molecular weight of 15,000-20,000; the reactive flow modifier is Sanhe Sanstab 2303; the antioxidant is a hindered phenolic antioxidant; and the lubricant is silicone powder.

[0035] (3) Add the mixture from the first barrel of the twin-screw extruder, add 10 parts of carbon fiber through the glass fiber feeding port, control the rotation speed at 1100r / min, and the temperature at 260-270°C to carry out extrusion granulation, After the material is extruded, it is pelletized with supercooled water; the diameter of the carbon fiber is 7-20 μm. ...

Embodiment 2

[0037] Example 2 Preparation of High Temperature Resistance and Thermally Conductive Nylon Composite Material (2)

[0038] (1) Dry the nylon at 110°C for 4 hours.

[0039] (2) Weigh 100 parts of PA66, 80 parts of PA12T, 50 parts of PA1212 elastomer, 50 parts of aluminum nitride, 1.5 parts of reactive flow modifier, 1.2 parts of antioxidant and 2.0 parts of lubricant and pre-mix evenly; the PA66 It is homopolymerized PA66 with a relative molecular weight of 15000-20000; the reactive flow modifier is Sanhe Sanstab 2303; the antioxidant is a phosphite antioxidant; and the lubricant is montan wax.

[0040](3) Add the mixture from the first barrel of the twin-screw extruder, add 30 parts of carbon fiber through the glass fiber feeding port, control the rotation speed at 1100r / min, and the temperature at 260-270°C to carry out extrusion granulation, After the material is extruded, it is pelletized with supercooled water; the diameter of the carbon fiber is 7-20 μm.

[0041] (4) Dr...

Embodiment 3

[0042] Example 3 Preparation of High Temperature Resistance and Thermally Conductive Nylon Composite Material (3)

[0043] (1) Dry the nylon at 110°C for 4 hours.

[0044] (2) Weigh 100 parts of PA66, 60 parts of PA10T, 30 parts of PA1212 elastomer, 30 parts of boron nitride, 1.0 part of reactive flow modifier, 0.8 part of antioxidant and 1.2 parts of lubricant and pre-mix evenly; the PA66 It is homopolymerized PA66 with a relative molecular weight of 15000-20000; the reactive flow modifier is Sanhe Sanstab 2303; the antioxidant is a sulfur-containing antioxidant; the lubricant is polyester wax.

[0045] (3) Add the mixture from the first barrel of the twin-screw extruder, add 20 parts of glass fiber from the fourth barrel, control the speed at 1100r / min, and the temperature at 260-270°C for extrusion granulation , the material is extruded and pelletized by supercooled water; the diameter of the carbon fiber is 7-20 μm.

[0046] (4) Dry the cut particles, injection molding a...

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 high-temperature-resistant and heat-conductive nylon composite material and a preparation method thereof. The high-temperature-resistant and heat-conductive nylon composite comprises the following components in parts by weight: 100 parts of PA66, 40-80 parts of high temperature-resistant nylon, 10-50 parts of a nylon elastomer, 10-30 parts of carbon fibers, 20-50 parts of a heat-conductive filler, 0.2-1.5 parts of a reactive flow modifier, 0.3-1.2 parts of an antioxidant and 0.3-2 parts of a lubricating agent. The preparation method comprises the following steps: uniformly pre-mixing the PA66, the high-temperature-resistant nylon, the nylon elastomer, the heat-conductive filler, the reactive flow modifier, the antioxidant and the lubricating agent, adding from a main feeding port of a double-screw extruder, adding the carbon fibers from a glass fiber mouth, controlling the rotating speed to be 800-1200 revolutions / min and the temperature to be 250-285 DEG C and performing extrusion granulation to obtain the high-temperature-resistant and heat-conductive nylon composite material. The material has excellent high temperature resistance and heat conduction and simultaneously has the characteristics of being good in mechanical property and easy to process.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-temperature-resistant, heat-conducting nylon composite material and a preparation method thereof. Background technique [0002] LED lighting technology meets people's needs for energy saving and emission reduction, so it has been widely used in the global lighting industry in recent years. However, the existing LED products often have the problem of higher operating temperature and shorter product life, which puts forward high requirements on the overall heat dissipation capacity of the part. It is particularly important to choose a thermal interface material with good thermal conductivity and high temperature resistance. Nylon is one of the five major engineering plastics. It has excellent mechanical properties, wear resistance, thermal stability and fatigue resistance, and is widely used in automobiles, electrical appliances, mechanical parts and other fields....

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): C08L77/06C08K13/04C08K7/06C08K3/22C08K3/28C08K3/38
CPCC08L77/06C08L2201/08C08L2205/025C08L2205/035C08K7/06C08K2003/2227C08K2003/282C08K2003/385
Inventor 周军杰张强陈光伟王锡军孟成铭杨涛陈晓东
Owner 上海日之升科技有限公司
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