Graphene/phenolic resin composite material and purpose thereof

A phenolic resin and composite material technology, applied in the field of new materials, can solve the problem that the mechanical properties and wear resistance of graphite oxide/phenolic resin in-situ composites are not suitable for industrial production, and the mechanical properties and wear resistance of graphite oxide/phenolic resin in-situ composites have not been greatly improved, and the scope of application is limited. problem, to achieve the effect of simple and feasible modification method, good dispersion stability and uniformity, and expansion of the scope of use

Inactive Publication Date: 2018-10-09
BEIHUA UNIV
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this preparation method is not suitable for industrial production, and the mechanical properties and wear resistance

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
  • Graphene/phenolic resin composite material and purpose thereof
  • Graphene/phenolic resin composite material and purpose thereof
  • Graphene/phenolic resin composite material and purpose thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1:

[0022]A preparation method of a graphene / phenolic resin composite material. The graphene and phenolic resin with a weight ratio of 0.02:100 are melt blended, and the melt blending extrusion temperature is 140 ° C. After adding fillers and mixing uniformly, the open plastic Mixing on the mill, crushing the material after mixing, molding at a temperature of 165°C and a pressure of 6MPa to prepare a composite material, and then following the curing procedure: 118°C for 2.5h, 138°C for 2.5h, 158°C for 2.5h , and cured at 178°C for 2.5 hours to obtain a surface-modified graphene oxide composite material. Due to the dehydration condensation of KH550 and the hydroxyl groups on GO, the modified GO has reduced hydrophilic groups and enhanced lipophilicity, which can effectively improve the interface interaction between GO and PF matrix, and improve the dispersion of GO in PF, so that The mechanical properties of the PF composite are improved, which can effectively ...

Example Embodiment

[0028] Example 2:

[0029] A preparation method of a graphene / phenolic resin composite material, melt blending graphene and phenolic resin with a weight ratio of 0.5:100, the melt blending extrusion temperature is 135 ° C, adding fillers and mixing evenly, in an open plastic Mixing on the mill, crushing the material after mixing, molding at a temperature of 168°C and a pressure of 5MPa to prepare a composite material, and then following the curing procedure: 120°C for 2h, 140°C for 2h, 160°C for 2h, and 180°C After 2 hours of solidification, the surface-modified graphene oxide composite material is obtained.

[0030] The addition amount of the curing accelerator is 0.68% of the weight of the phenolic resin, and the molar ratio of propylene carbonate, diisocyanate and octadecanoic acid in the curing accelerator is 1:1.45:0.025.

[0031] Graphene is surface-modified graphene oxide, and the modification method of graphene is: add graphene oxide into KH550 solution with a concent...

Example Embodiment

[0039] Example 3:

[0040] Composite Mechanical Properties Test

[0041] Impact performance test: The sample size is 80mm×10mm×4mm, and the test is carried out according to GB / T 1043.1-2008.

[0042] Bending performance test: test speed 2mm / min, span 64mm, test according to GB / T 9341-2008.

[0043] Friction and wear properties: Tested according to GB 5763-2008, the sample size is 25mm×25mm×5mm, the friction of the sample at 100, 150, 200, 250, 300°C is measured at a speed of 480r / min and a compression force of 0.98MPa Coefficient and wear mass loss. Among them, volumetric wear rate ∆V=1.73×[∆WId·μ F ],10 -7 cm 3 / (N m); Decay rate F=[(μ F100℃ -μ F250℃ ) / μ F100℃ ]×100%, recovery rate R=(μ R100℃ / μ F100℃ )×100%.

[0044] Morphology of the worn surface: After spraying gold on the worn surface of the sample, the worn surface was analyzed with a scanning electron microscope.

[0045] Creep performance: sample size 30mm×10mm×3mm, temperature 180°C, practice for 120min. ...

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 graphene/phenolic resin composite material and a purpose thereof. The composite material is prepared by the following preparation method including the steps of performing melt blending on graphene and phenolic resin; after adding filling material and uniform mixing, performing mixing on an open type plasticator, crushing the materials after the mixing; performing moldingpressing shaping to prepare a composite material; then, performing curing; thus obtaining a surface modified graphene oxide composite material. The composite material has the beneficial effects that the mechanical property of the composite material is good; the friction coefficient is high; the abrasion rate is low; the used graphene has the advantages of low hydrophily, high dispersion stabilityand uniformity in polymers, and strong thermal stability. The invention also discloses the purpose of the composite material in preparation of wiping materials for automobile braking lining sheets, automobile braking sheets and clutch sheets.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a graphene / phenolic resin composite material and its application. Background technique [0002] Phenolic resin is widely used in many fields due to its low price, good thermal performance after curing, high mechanical strength, good electrical insulation, good flame retardancy and low smoke performance, excellent high temperature creep resistance, and stable performance. However, phenolic resin has the disadvantages of high curing temperature, high brittleness, high shrinkage rate, chemical corrosion and alkali resistance, and poor mechanical properties, easy moisture absorption, and poor electrical properties, which make the application of pure phenolic resin popular. However, it cannot meet the requirements of many high-end fields, so various graphene / phenolic resin composite materials are getting more and more attention. The research on the modification of phenolic resi...

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): C08L61/06C08L77/10C08K13/04C08K3/04C08K9/06C08K9/04C08K7/06C08K7/10C08K3/22C08K3/30
CPCC08K2003/2227C08K2003/3045C08L61/06C08L2201/08C08L2205/16C08L77/10C08K13/04C08K3/042C08K9/06C08K9/04C08K7/06C08K7/10C08K3/22C08K3/30
Inventor 战瑞瑞刘畅姜松李红丽刘欣孟凡影
Owner BEIHUA UNIV
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
Try Eureka
PatSnap group products