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Preparation method and device and application of modified PVC (polyvinyl chloride) material with NTC (negative temperature coefficient) effect

The technology of a PVC material and a preparation device is applied in the field of modified PVC material preparation, which can solve the problems of inconvenient operation and inability to quickly replace the die head of an extruder, and achieve the effects of convenient cleaning, prevention of raw material overflow and high stability

Active Publication Date: 2021-09-17
惠州市大义塑胶新材料有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] However, when the existing extruders used to produce PVC materials are in use, when plastic particles of different particle sizes need to be produced, the die heads of the extruder cannot be replaced quickly, which is inconvenient for people to operate.

Method used

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  • Preparation method and device and application of modified PVC (polyvinyl chloride) material with NTC (negative temperature coefficient) effect
  • Preparation method and device and application of modified PVC (polyvinyl chloride) material with NTC (negative temperature coefficient) effect
  • Preparation method and device and application of modified PVC (polyvinyl chloride) material with NTC (negative temperature coefficient) effect

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0044] In the specific implementation process, such as Figure 4 and Figure 13 Shown, a kind of modified PVC material preparation method with NTC effect comprises the following steps:

[0045] Step (1), weigh the raw materials according to the mass percentage components and take out the corresponding raw materials; the raw materials include the following components in mass fractions: 50-55 parts of polyvinyl chloride resin, 8-11 parts of calcium carbonate, 10 -13 parts of partial phenyl ester plasticizer, 11-15 parts of polyester plasticizer, 2-4 parts of zinc stearate / calcium stearate compound, 1-3 parts of antimony trioxide, 4-7 parts 1 part of polymer amide compound, 4-7 parts of silicon-based compound.

[0046] Step (2), placing the raw materials into a vertical mixing tank, and mixing and stirring the raw materials until plasticized by the vert...

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Abstract

The invention provides a preparation method and device and application of a modified PVC (polyvinyl chloride) material with an NTC (negative temperature coefficient) effect and application. The preparation method comprises the following steps: (1), weighing corresponding raw materials in percent by mass; (2) putting the raw materials into a vertical stirring cylinder, and mixing and stirring the raw materials by the vertical stirring cylinder until the raw materials are plasticized to obtain a semi-finished product; and (3) putting the semi-finished product into an extruder, and extruding and granulating by using the extruder to obtain the modified PVC material with the NTC effect. According to the preparation method and device, people can conveniently and rapidly replace different die heads, so that plastic particles of different sizes are produced in a switched mode, after the die heads are replaced, the die heads and connecting channels are pressed, the sealing performance is improved, the raw materials are prevented from overflowing, the stability is high, and cleaning is convenient.

Description

technical field [0001] The invention relates to the technical field of PVC material preparation, in particular to a preparation method, device and application of a modified PVC material with NTC effect. Background technique [0002] NTC refers to a thermistor phenomenon and material that decreases exponentially with increasing temperature and has a negative temperature coefficient. The material is a semiconductor ceramic made by fully mixing, molding, and sintering two or more metal oxides such as manganese, copper, silicon, cobalt, iron, nickel, and zinc. It can be made into a material with a negative temperature coefficient. (NTC) thermistor. Its resistivity and material constants vary with material composition ratio, sintering atmosphere, sintering temperature and structural state. Now there are also non-oxide NTC thermistor materials represented by silicon carbide, tin selenide, and tantalum nitride; [0003] PVC is polyvinyl chloride, which is a polymer material obta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B9/06B29C33/30B29C48/25
CPCB29B9/06B29C48/2562B29C33/30
Inventor 林伟胜
Owner 惠州市大义塑胶新材料有限公司
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