A kind of preparation method, device and application of modified PVC material with NTC effect

A technology of PVC material and preparation device, which is applied in the field of modified PVC material preparation, can solve the problems of inability to quickly replace the die head of the extruder, inconvenient operation, etc., and achieve the effects of preventing raw material overflow, convenient cleaning, and increasing airtightness

Active Publication Date: 2022-06-24
惠州市大义塑胶新材料有限公司
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  • Claims
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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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  • A kind of preparation method, device and application of modified PVC material with NTC effect
  • A kind of preparation method, device and application of modified PVC material with NTC effect
  • A kind of preparation method, device and application of modified PVC material with NTC effect

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Embodiment Construction

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

[0044] In the specific implementation process, such as Figure 4 and Figure 13 As shown, a method for preparing a modified PVC material with NTC effect comprises the following steps:

[0045] In step (1), the raw materials are weighed according to the mass percentage components of the corresponding components; 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 trimetyl 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 of antimony trioxide part of the polymer amide complex, 4-7 parts of the silicon-based complex.

[0046] In step (2), the raw materials are placed in a vertical stirring cylinder, and the raw materials are mixed and stirred by th...

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Abstract

The invention provides a preparation method, device and application of a modified PVC material with NTC effect. The raw materials are placed in a vertical mixing tank, and the raw materials are mixed and stirred by the vertical mixing tank until they are plasticized to obtain a semi-finished product; step (3), the semi-finished product is put into an extruder, and the extruder is used to Extrusion granulation is carried out to obtain a modified PVC material with NTC effect. The invention is convenient for people to quickly replace different die heads, so as to switch to produce plastic particles of different sizes, and after changing the die head, the die head and the connecting channel are pressed tightly, thereby increasing the sealing performance, preventing the raw material from overflowing, and improving the stability Higher and easier to clean.

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 the thermistor phenomenon and material whose resistance decreases exponentially with increasing temperature and has a negative temperature coefficient. The material is a semiconductor ceramic made of two or more metal oxides, such as manganese, copper, silicon, cobalt, iron, nickel, zinc, etc., which are fully mixed, formed, and sintered. It can be made into a negative temperature coefficient. (NTC) thermistor. Its resistivity and material constant vary with the proportion of material composition, sintering atmosphere, sintering temperature and structural state. Now there are non-oxide NTC thermistor materials represented by silicon carbide, tin selenide, tantalum nitride, etc.; [0003] PVC is polyvinyl chloride, which is a poly...

Claims

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Application Information

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Patent Type & Authority Patents(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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