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Synthesis method of novel self-lubricating polyamide-imide insulating resin

A polyamide-imide and insulating resin technology is applied in the field of enameled wire enamel manufacturing to achieve the effects of improving winding performance and winding performance, improving production efficiency, good self-lubricating performance and flexibility.

Pending Publication Date: 2022-04-29
NANTONG BAICHUAN NEW MATERIAL CO LTD +1
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  • Abstract
  • Description
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Problems solved by technology

[0005] The purpose of the present invention is to solve the above-mentioned problems existing in the use process of existing polyamide-imide wire enamel, and propose a new synthesis method of self-lubricating polyamide-imide insulating resin

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  • Synthesis method of novel self-lubricating polyamide-imide insulating resin

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Embodiment Construction

[0028] The technical solution of the present invention will be further described below according to the embodiments. In the description of this specification, the content of an embodiment means that the specific technical features described in conjunction with it are included in at least one embodiment of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific technical features may be combined in any one or more implementations or examples in a proper manner.

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Abstract

The invention provides a novel synthesis method of self-lubricating polyamideimide insulating resin, which comprises the following steps: adding N-ethyl pyrrolidone, polyethylene wax and trimellitic anhydride into a reaction kettle at normal temperature, heating, adding molten MDI-100, carrying out heat preservation, sampling, measuring the viscosity, stopping heating after the resin is qualified, and cooling to room temperature to obtain the self-lubricating polyamideimide insulating resin. And adding N-ethyl pyrrolidone and xylene, and stirring to obtain a finished product of the self-lubricating polyamide-imide insulating resin. The polyethylene wax with good lubricity is introduced into the polyamide-imide enameled wire, so that the maximum static friction coefficient of the enameled wire is reduced, and the prepared enameled wire is good in lubricating effect, has high temperature resistance and also has good self-lubricating performance and flexibility; the preparation process is simple, coating of a lubricating coating is omitted, the production efficiency, winding performance and winding performance of the enameled wire are greatly improved, and the enameled wire can be widely applied to motors, electric appliances, transformers, especially magnet ring coils as winding wires.

Description

technical field [0001] The invention relates to a method for synthesizing a novel self-lubricating polyamide-imide insulating resin, and belongs to the technical field of enameled wire enamel manufacture. Background technique [0002] Polyamide-imide, referred to as PAI, is a class of polymers in which imide rings and amide bonds are regularly arranged alternately. The strength of polyamide-imide is unmatched by any industrial unreinforced plastic in the world today. Its tensile strength exceeds 172MPa, and its heat distortion temperature is 274°C under a load of 1.8MPa. Polyamide-imide may also undergo solid-state polymerization after manufacture, increasing the molecular weight through post-curing to provide better performance. Post-curing occurs at 260°C. The time and temperature required for curing mainly depend on the thickness and shape of the part. Polyamide-imide can be used for a long time at 220°C, does not lose weight at 300°C, and begins to decompose at around 4...

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Application Information

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IPC IPC(8): C08G73/10C08G73/14G01N5/04G01N11/14
CPCC08G73/14C08G73/1035G01N11/14G01N5/04
Inventor 孙百亚赵跃刘丰震骏周国君万鹏梁国成袁庆庆
Owner NANTONG BAICHUAN NEW MATERIAL CO LTD
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