PPS/PA66/graphene composite material and preparation method thereof

A composite material and graphene technology, applied in the field of polymer materials, can solve problems such as low melt strength, melt viscosity affecting the stability of injection molding extrusion molding process, and unstable melt viscosity

Active Publication Date: 2019-06-07
CHANGZHOU VOCATIONAL INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PPS with high crystallinity melts into a viscous flow state, with low melt strength, high melt index (MI), and unstable melt viscosity.
The unstable melt viscosity and high melt mass flow rate of PPS will affect the stability of injection molding and extrusion molding processes, and limit its processing range
For example, the MI of injection molding grade PPS reaches 61g / 10min under the condition of 290°C and 5kg load; after heat treatment, the MI of PPS containing thermal oxygen crosslinking structure reaches 45g / 10min under the condition of 316°C and 5Kg load, but it is easy to Partial oxidative crosslinking occurs, affecting process stability

Method used

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  • PPS/PA66/graphene composite material and preparation method thereof
  • PPS/PA66/graphene composite material and preparation method thereof
  • PPS/PA66/graphene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-10

[0047] Shown in Table 1 is the mass ratio of each component used in Examples 1-10.

[0048] The preparation method steps of described PPS / PA66 / graphene are as follows:

[0049] (1) Mix graphene and distilled water, put them into XR-LU08 ultrasonic cleaning machine of Changzhou Xinren Ultrasonic Equipment Co., Ltd. and ultrasonically mix for 1.5-2h,

[0050] (2) in the graphene mixed solution after the ultrasonic mixing of gained in (1), further add coupling agent and emulsifier according to the mass ratio shown in table 1, and ultrasonic mixing 5-15min;

[0051] (3) According to the mass ratio shown in Table 1, PA powder is blended with graphene aqueous solution, and the mixed solution is put into a grinding dish and ground for 2-3 hours. °C, and then put the resultant into a vacuum drying oven to dry at 80±5 °C to obtain a graphene pre-dispersion;

[0052] (4) Weigh EMG particles, PPS, PA66, and antioxidant 1010 according to the mass ratio shown in Table 1; dry the PPS in a...

Embodiment 11-15

[0070] In Examples 11-15, graphene is dispersed by blending and masticating EMG and graphene to enhance the dispersion of graphene, and utilize the synergistic effect of EMG and graphene to adjust the melt index of the composite material , to enhance the processing performance of composite materials. Its specific operation is as follows:

[0071] According to the formula shown in Table 4,

[0072] (1) Mix the weighed EMG on the XK-160 mill roller of Changzhou First Rubber and Plastic Equipment Co., Ltd.,

[0073] (2) add Graphene to the EMG of refining, continue refining and disperse on roller, obtain EMG / Graphene blend;

[0074] (3) Standby after pulverizing the EMG / graphene blend;

[0075] (4) Dry the polyphenylene sulfide in a vacuum oven at 90°C for 2-4 hours in advance; dry the polyamide in a vacuum oven at 90°C for 10 hours in advance, then weigh the polyphenylene sulfide and polyamide, Mix with graphene pre-dispersion and antioxidant, add Coperion (Nanjing) Machiner...

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Abstract

The invention discloses a PPS / PA66 / graphene composite material and a preparation method thereof, and belongs to the field of polymer materials. The PPS / PA66 / graphene composite material comprises the following components, in parts by mass: 65-80 parts of polyphenylene sulfide (PPS), 20-35 parts of polyamide (PA66), 2.5 parts of polyamide micro-nano powder (PA powder), 0.04-0.16 part of graphene, 5parts of an ethylene-maleic anhydride-glycidyl methacrylate terpolymer (EMG), 0-0.05 part of a silane coupling agent, 0-0.05 part of an emulsifying agent, and 0.4 part of an antioxidant; or the composite comprises the following components, in parts by mass: 70 parts of polyphenylene sulfide (PPS), 30 parts of polyamide (PA66), 0.08 part of graphene, 2.5-7.5 parts of an ethylene-maleic anhydride-glycidyl methacrylate terpolymer (EMG) and 0.4 part of an antioxidant. According to the composite material and method provided by the invention, through the synergistic action of the graphene and the EMG, the melt fluidity of the PPS / PA66 composite material is changed, and the processing properties of the composite material are improved.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a PPS / PA66 / graphene composite material and a preparation method thereof. Background technique [0002] The molecular chain of polyphenylene sulfide (PPS) is composed of benzene rings and sulfur atoms arranged alternately. The benzene rings give it rigidity, which makes PPS have good heat resistance, and the thioether bonds give it flexibility, making it easy to crystallize. . Therefore, as a high crystallinity polymer, PPS has a lower glass transition temperature (Tg) of 85-100°C and a higher melting temperature (Tm) of 280-290°C, and has excellent heat resistance. It can be used in the range of ~220℃. [0003] The mechanical properties of PPS are hard and brittle, low elongation at break, especially poor toughness, and low notched impact strength. In the prior art, carbon materials such as carbon nanotubes (CNT) and graphene microplates (GNP) are selected as filli...

Claims

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Application Information

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IPC IPC(8): C08L81/02C08L77/06C08L23/08C08K9/12C08K3/04
Inventor 徐亮成高炜斌陈晓松熊煦陈允猛孔飞宋爽
Owner CHANGZHOU VOCATIONAL INST OF ENG
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