Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing composite phenolic resin/phyllosilicate nano material

A nanocomposite material and layered silicate technology, which is applied in the field of preparation of phenolic resin/layered silicate clay nanocomposite materials, can solve the problems of high viscosity of phenolic resin, high energy consumption for melting and mixing, affecting product quality, etc. , to achieve the effect of increased thermal decomposition temperature, improved heat resistance, and wide adaptability

Inactive Publication Date: 2004-03-31
WUHAN UNIV OF TECH
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problems of this method are: the viscosity of the phenolic resin in the molten state is very high, it is difficult to disperse evenly with the layered silicate clay, the production process is not easy to control, and there are high requirements for the production equipment; high temperature melt blending is easy to cause phenolic resin The self-crosslinking of the resin affects the quality of the product; the energy consumption of melt mixing is relatively high. According to some studies, more than 90% of the energy loss in the melt blending process is to maintain the movement of the melt, and only less than 10% of the energy is used for mixing Dispersion (Pahl M, Mischen von Ineinander Nichtloeslichen Fluessigkeiten. In: Reihe Kunststofftechnik. Duesseldorf. VDI-Verlag, 1986)

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 preparing composite phenolic resin/phyllosilicate nano material
  • Method for preparing composite phenolic resin/phyllosilicate nano material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 100 parts of thermoplastic phenolic resin (particle size 240 mesh), organically modified montmorillonite (total cation exchange capacity (CEC) 95meq / 100g, clay particle size 240 mesh, sheet thickness 0.9nm, interlayer distance 1.9nm ) 7 parts, physical mixing and high-speed stirring for 15 minutes to form a uniform mixing system. Place the mixed material in a mold, heat to 120°C, pressurize at a constant temperature of 50MPa, and hold the pressure for 10min. Cool to room temperature and grind to 240 mesh to obtain phenolic resin / organic montmorillonite nanocomposite material.

[0027] Depend on figure 1 It can be seen that the characteristic peak at 4.9 ° of the organic montmorillonite silicate sheet in the XRD analysis figure of the phenolic resin / organic montmorillonite nanocomposite material obtained through the preparation process of the examples has disappeared, which can explain that the montmorillonite silicate sheet has disappeared. The desoiled sheets have be...

Embodiment 2

[0029] 100 parts of 2123 type thermoplastic phenolic resin (particle size 240 mesh), expanded vermiculite (particle size 280 mesh, total cation exchange capacity (CEC) 98meq / 100g, sheet thickness 1.0nm, interlayer distance 2.4nm) 12 parts , Physical mixing and high-speed stirring for 20 minutes to form a uniform mixing system. Put the mixed material in the mold, pressurize at room temperature to 35MPa, hold the pressure for 15min, remove it, and keep the temperature at 130°C for 60min. After cooling to room temperature, the phenolic resin / expanded vermiculite nanocomposite material was obtained by crushing to 240 mesh.

Embodiment 3

[0031] Cashew nut shell oil modified phenolic resin (particle size 240 mesh) 100 parts, organically modified vermiculite (particle size 280 mesh, total cation exchange capacity (CEC) 98meq / 100g, sheet thickness 1.0nm, interlayer distance 2.9 nm) 1.5 parts, physical mixing and high-speed stirring for 15 minutes to form a uniform mixing system. Put the mixed material in the mold, pressurize at room temperature to 70MPa, hold the pressure for 15min, remove it, and keep the temperature at 130°C for 100min. After cooling to room temperature, the phenolic resin / organic vermiculite nanocomposite material was obtained by crushing to 240 mesh.

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
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Sheet thicknessaaaaaaaaaa
Login to View More

Abstract

A method of preparing a nanometer-grade composite material of phenolic resin / stratified silicate clay, comprises the following steps: 1) at the mass ratio of 100í†0.5í½20, mixing phenolic resin and stratified silicate clay and stirring at a high speed for 3í½30minú”2) putting the mixture into a mold and pressurizing to 12í½80Mpa, maintaining the pressure for 15í½100minú¼when pressurizing, the mixture is at the constant temperature of 80í½ 150degree C, or after pressurizing, the mixture is at the constant temperature of 80í½ 150degree C, keeping the temperature for 20í½120minú”3) pulverizing the resultant material into particles of 200í½400 meshes, that is the nanometer-grade composite material of phenolic resin / stratified silicate clay.

Description

technical field [0001] The invention relates to a preparation method of a phenolic resin / layered silicate clay nanocomposite material. Background technique [0002] Because of its main chain structure containing a large number of benzene rings, phenolic resin has the advantages of high strength, stable performance, hard wear resistance, resistance to most chemical reagents, easy availability of raw materials, and low cost after curing, and has been applied in many fields. However, phenolic resin also has disadvantages such as high brittleness and insufficient heat resistance in some application fields, which limit its wider application. In order to improve the performance of phenolic resin and further expand its application range, it is necessary to modify the phenolic resin. Commonly used modification methods are: organic polymerization modification, such as organic boron modified phenolic resin, tung oil modified phenolic resin; polymer blending modification, such as nitr...

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): C08K3/34C08L61/06
Inventor 余剑英魏连启曹献坤
Owner WUHAN UNIV OF TECH