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Oil-containing casting type nylon/rare earth/graphene oxide composite material

A technology of cast nylon and composite materials, which is applied in the field of co-modified cast nylon composite materials with inorganic nanomaterials and lubricants, can solve the problems that the material modulus and elongation at break have not been improved, and achieve improved friction performance, Improved wear resistance and improved elongation at break

Active Publication Date: 2017-03-15
HEBEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN105623243A discloses an oil-containing MC nylon with carbon nanotubes added, and Chinese patent CN102942694 A discloses a cast nylon mixed with liquid paraffin and graphene. The addition of nanoparticles improves the mechanical strength of the material to a certain extent , but the modulus and elongation at break of the material were not improved

Method used

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  • Oil-containing casting type nylon/rare earth/graphene oxide composite material
  • Oil-containing casting type nylon/rare earth/graphene oxide composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Weigh 50 g of caprolactam monomer and heat and melt at 80° C., add 0.01 g of graphene oxide into the caprolactam melt, maintain the temperature and ultrasonically disperse for 0.5 hours to obtain a caprolactam suspension with well-dispersed graphene oxide.

[0028] (2) Weigh 50g of caprolactam monomer and heat and melt at 80°C, and 0.007gLaCl 3 Add it into the caprolactam melt, heat and ultrasonically disperse at 80°C for 0.5 hours to obtain LaCl 3 Well dispersed caprolactam suspension.

[0029] (3) the graphene oxide caprolactam suspension obtained in step (1) and the LaCl obtained in step (2) 3 The caprolactam suspension was added into the reaction vessel at a mass ratio of 1:1. Start heating, heat to 100°C and separate under reduced pressure for 4 minutes (vacuum degree 0.9 to 0.95 MPa) to remove water in the system, then add 0.50 g of sodium hydroxide when heated to 120°C, and continue to separate under reduced pressure for 4 minutes to remove water in the sys...

Embodiment 2

[0034] Basically with embodiment 1, only the LaCl in the step (1) 3 change to La 2 o 3 .

Embodiment 3

[0036] Basically the same as embodiment 1, only change the base oil in the step (4) into white special lubricating grease.

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Abstract

The invention discloses an oil-containing casting type nylon / rare earth / graphene oxide composite material. The composite material is prepared by mixing a caprolactam suspension containing nanoparticles A and nanoparticles B according to a mass ratio of 1:1; at temperature of 120-130 DEG C, adding a catalyst, and at 120-130 DEG C, depressurizing for 4-8min; at 130-140 DEG C, adding, by mass, 3.0-5.0 parts of lubricating oil or lubricating grease, adding an activator, mixing, pouring into a mould, and maintaining 30-60min at temperature of 150-180 DEG C to obtain the composite material. The oil-containing casting type nylon / rare earth / graphene oxide composite material has excellent comprehensive performance and is especially suitable for requirements of parts of large machinery such as gears, sliders and bearings.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular adopts inorganic nanometer materials and lubricants (lubricating oil, grease) to jointly modify cast nylon composite materials. [0002] technical background [0003] Cast nylon, also known as monomer casting nylon (MC nylon), is to directly cast the molten caprolactam monomer into the preheated In the mould, the melted caprolactam monomer rapidly undergoes anionic in-situ polymerization in the mould, and cast nylon products are obtained. Cast nylon has the advantages of simple manufacturing process, high molecular weight, good mechanical strength and wide application. However, cast nylon also has disadvantages such as poor low temperature toughness, low impact strength, poor wear resistance, poor self-lubricating performance, and high wear rate, which affects the application of MC nylon to a certain extent. [0004] It is an effective method to add oil to M...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08L91/00C08K3/04C08K3/16C08K3/22C08G69/16C08G69/14
CPCC08G69/14C08G69/16C08K3/04C08K3/16C08K3/22C08K2201/011C08L77/02C08L91/00C08K2003/221
Inventor 王月欣赵燕文张倩孟清
Owner HEBEI UNIV OF TECH
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