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Method for preparing heat-resisting elastic insulating pipe

An insulating tube and elastic technology, applied in the field of preparation of heat-resistant pipes, can solve problems such as low product expansion rate and unenvironmental production process, and achieve the effects of reducing accident rate, improving installation efficiency and tight protection.

Active Publication Date: 2013-04-24
浙江博菲电气股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The working temperature is from -60°C to 200°C, the expansion rate of the product is low, the radial expansion rate is about 10%, and the production process is not environmentally friendly

Method used

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  • Method for preparing heat-resisting elastic insulating pipe
  • Method for preparing heat-resisting elastic insulating pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] 1) Combine 3 strands of 34TEX alkali-free glass fiber into a bundle and wind it on the spindle, and use an 80-spindle braiding machine to produce a blank tube with a stretching ratio of 1:2.

[0026] 2) Preparation of cladding materials:

[0027] A component: 300 grams of nano silicon dioxide; B component: 9252 Dow Corning Silicone 32 kg Component C: 92523 Dow Corning silicone component B 3.3 kg; D component: 330 grams of methyl vinyl siloxane.

[0028] In container 1, mix components A and B according to the ratio shown in item 3 above, then stir at a constant speed for about 30 minutes at a speed of about 200 rpm.

[0029] In container 2, mix an appropriate amount of components C and D according to the ratio shown in item 3 above, and stir at a constant speed for about 5 minutes at a speed of about 100 rpm.

[0030] Mix the mixture in container 1 and container 2 according to the recipe ratio, and stir at a speed of about 50 rpm for 5 minutes.

[0031] 3) Coat the...

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Abstract

The invention relates to a method for preparing a heat-resisting elastic insulating pipe. The method concretely comprises the following steps of: weaving a glass fiber pipe in a magnification ratio of 1:2 with alkali-free glass fiber by using a weaving machine through a weaving pipe; preparing a coating material; uniformly painting the coating material on the surface of the prepared glass fiber pipe, heating for 1min at 140 DEG C, then raising the temperature to 200 DEG C, and then reheating for 1min to ensure that the coating material is solidified to prepare the heat-resisting elastic insulating pipe. By adopting the insulating pipe prepared by the invention, the safe operations of transportation equipment, wind-driving generator and track traction motors are ensured under the conditions of higher temperature of 260 DEG C and higher voltage of 10kV, the accident rate is reduced, the installation efficiency is improved, and the wiring harness is better protected because the flexibility of the insulating pipe is improved.

Description

technical field [0001] The invention relates to a preparation method of a heat-resistant pipe, in particular to a preparation method of a heat-resistant elastic insulating pipe. Background technique [0002] The insulation material industry divides products into five grades: A, B, F, H and C according to the high temperature resistance of the material. Among them, the continuous working temperature of grade A is 90°C, the continuous working temperature of grade B is 120°C, the continuous working temperature of grade F is 150°C, the continuous working temperature of grade H is 180°C, and the continuous working temperature of grade C is 200°C. Among them, insulating tubes made of glass fiber braided tubes as the base material and coated with polymers are widely used in motor winding leads and transportation equipment wiring harnesses. As the equipment structure design becomes more and more compact, the system transmits more and more signals. , the use of casing is also gradu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L11/02F16L57/04
Inventor 胡道雄
Owner 浙江博菲电气股份有限公司
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