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A kind of PA/PPO alloy suitable for electrostatic spraying and preparation method thereof

An electrostatic spraying and alloying technology, which is applied in the field of electrostatic spraying of PA/PPO alloy and its preparation, can solve the problems of high dosage, preparation of conductive masterbatch, and high price of conductive carbon black, so as to reduce usage and material cost. , The effect of simple and easy operation in the processing link

Active Publication Date: 2021-07-20
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to achieve better electrostatic spraying effect, the surface resistivity of the material should be stabilized at 10 11 Below Ω, this permanent antistatic effect is usually achieved by adding conductive carbon black with high temperature resistance. Dispersion, the need to prepare conductive masterbatches and other issues (such as patent 201310007354.4)
Graphite has functions such as high temperature resistance, electrical conductivity, thermal conductivity, lubricity, and chemical stability. Modification of graphite can improve the electrochemical performance of graphite. Among them, expanded graphite can instantly increase its volume by 150 to 300 times when exposed to high temperatures. It not only maintains graphite Conductivity, high temperature resistance and corrosion resistance and other properties, while overcoming the shortcomings of natural graphite brittleness, increasing its softness and plasticity, thereby improving its dispersion in the resin matrix, but simply using expanded graphite to improve the conductivity of the material , there is a problem that the number of added copies is high and it is difficult to add

Method used

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  • A kind of PA/PPO alloy suitable for electrostatic spraying and preparation method thereof
  • A kind of PA/PPO alloy suitable for electrostatic spraying and preparation method thereof
  • A kind of PA/PPO alloy suitable for electrostatic spraying and preparation method thereof

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Embodiment 1

[0036] This embodiment provides a PA / PPO alloy suitable for electrostatic spraying and a preparation method thereof, the specific steps are as follows:

[0037] (1) take each component according to the weight ratio in table 2;

[0038] (2) Mix the weighed components in a high-speed mixer for 2 to 15 minutes to obtain a mixture;

[0039] The above-mentioned mixed mixture is fed into the main feed of the twin-screw extruder, and the sample is obtained through melt extrusion, cooling, drying, and pelletizing; wherein, the twin-screw extruder is a co-rotating twin-screw extruder. Extruder, the length-to-diameter ratio of the screw is 25-40, and the screw barrel is equipped with a vacuum exhaust device and a temperature control device; the temperature of the feed section of the twin-screw extruder is 250-270°C, and the temperature of the plasticizing section is 260-260°C. 280°C, the temperature of the homogenization section is 265-280°C; the screw speed is 200-700rpm.

Embodiment 2

[0041] This embodiment provides a PA / PPO alloy suitable for electrostatic spraying and its preparation method. The weight ratio of raw materials is shown in Table 2, and the preparation method is the same as that of Embodiment 1.

Embodiment 3

[0043] This embodiment provides a PA / PPO alloy suitable for electrostatic spraying and its preparation method. The weight ratio of raw materials is shown in Table 2, and the preparation method is the same as that of Embodiment 1.

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Abstract

The invention discloses a PA / PPO alloy suitable for electrostatic spraying and a preparation method thereof; the PA / PPO alloy comprises the following components and parts by weight: 15-40 parts of PPO resin, 45-70 parts of nylon (PA), 3-15 parts of toughening agent, 0.2-3 parts of compatibilizer, 1-5 parts of conductive carbon black (CCB), 2-10 parts of expanded graphite (EG), and 0.2-2 parts of other additives. The PA / PPO alloy of the present invention has excellent antistatic properties and dimensional stability, has a smooth surface feel and is easy to operate, does not need to prepare conductive masterbatches, and can be applied to fields of electrostatic spraying such as automobiles and home appliances.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a PA / PPO alloy suitable for electrostatic spraying and a preparation method thereof. Background technique [0002] PA / PPO alloy, with PA as the continuous phase, and PPO dispersed in the matrix, this alloy has both the good processability, chemical corrosion resistance and impact resistance of PA, and the high temperature resistance and dimensional stability of PPO. The toughened and modified PA / PPO alloy is especially suitable for applications such as automobiles and home appliances. [0003] Conductive PA / PPO combines the excellent performance and electrical conductivity of the alloy, and the application potential of PA / PPO is more prominent in the field of electrostatic spraying. In order to achieve better electrostatic spraying effect, the surface resistivity of the material should be stabilized at 10 11 Below Ω, this permanent antistatic effect is usually achieved by addin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08L71/12C08L23/16C08L51/00C08L51/06C08K3/04C08K7/24
CPCC08K2201/001C08L77/06C08L2205/035C08L71/12C08L23/16C08L51/006C08L51/06C08K3/04C08K7/24
Inventor 于云安周霆辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS