Preparation method of ultralong thin-walled pressure- and heat-resistant polytetrafluoroethylene dispersion resin heat exchange tube

A technology of polytetrafluoroethylene and dispersed resin, which is applied in the field of fluoroplastics manufacturing, can solve the problems of affecting the diameter of the pipe and lack of strict control, etc., and achieve the effect of good temperature and pressure resistance

Inactive Publication Date: 2012-12-19
天津市天塑科技集团有限公司技术中心
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Problems solved by technology

In fact, in the production of polytetrafluoroethylene dispersed resin (PTFE) temperature-resistant and pressure-resistant thin-walled heat exchange tubes, the diameter and thickness of the pipe are affected, and the ultra-long polytetrafluoroethylene dispersed re

Method used

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  • Preparation method of ultralong thin-walled pressure- and heat-resistant polytetrafluoroethylene dispersion resin heat exchange tube
  • Preparation method of ultralong thin-walled pressure- and heat-resistant polytetrafluoroethylene dispersion resin heat exchange tube

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Embodiment Construction

[0022] In view of the polytetrafluoroethylene (PTFE) that can be used has multiple grades, and the polytetrafluoroethylene (PTFE) of different grades has different molecular weight distributions and characteristics, the present invention selects and uses molecular weight in 2.3 million-5 million, particle Dispersion resin with a diameter of 0.2-0.4 microns, together with suitable auxiliary components, constitutes a two-member mixed component, and different process formulations and corresponding process conditions are determined for different purposes. The main process includes: 1. Mixing of raw materials, 2. Aging and infiltration, 3. Pre-pressing, 4. Pushing, 5. Drying and deoiling, 6. High temperature sintering, 7. Quenching treatment, 8. Finished product winding. The following process is implemented to manufacture ultra-long polytetrafluoroethylene dispersed resin (PTFE) temperature-resistant and pressure-resistant thin-walled heat exchange tubes.

[0023] 1. Mixing of raw ...

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Abstract

The invention relates to fluoroplastic manufacturing technology, in particular to an ultralong thin-walled pressure and heat-resistant polytetrafluoroethylene (PTFE) dispersion resin heat exchange tube. The ultralong thin-walled pressure and heat-resistant polytetrafluoroethylene (PTFE) dispersion resin heat exchange tube is prepared from polytetrafluoroethylene (PTFE) dispersion resin by means of material mixing, aging and infiltrating, pre-press forming, extruding forming, drying to remove oil, high temperature sintering, quenching treatment and finished product reeling. According to the invention, the material formula and the production technology of the ultralong thin-walled pressure and heat-resistant polytetrafluoroethylene (PTFE) dispersion resin heat exchange tube are improved, so that a continuous, uniform and stable method for producing the ultralong thin-walled pressure and heat-resistant polytetrafluoroethylene (PTFE) dispersion resin heat exchange tube is provided.

Description

technical field [0001] The invention relates to the manufacturing technology of fluoroplastics, which is an ultra-long polytetrafluoroethylene dispersion resin (PTFE) temperature-resistant and pressure-resistant thin-walled heat exchange tube. Background technique [0002] Fluoroplastics are alkane polymers in which part or all of the hydrogen is replaced by fluorine, which has the advantages of good chemical stability, good insulation and corrosion resistance. Polytetrafluoroethylene (PTFE), as a member of the fluoroplastic family, is responsible for the mission of functional new materials. It has the best electrical insulation, chemical stability, and corrosion resistance among fluoroplastics, and is the most corrosion-resistant in the world today. One of the best materials. The pipe made of polytetrafluoroethylene dispersion resin (PTFE) can be pure resin material or modified material, and its application range is very wide, and can be used for chemical anticorrosion, el...

Claims

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Application Information

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IPC IPC(8): B29C69/00B29L23/00B29K27/18
Inventor 谢学民尹陆生段连群赵咏梅王润增李栋刘国庆吴震董红霞戴靖陆雅晶马力王劼齐丽红孙乐
Owner 天津市天塑科技集团有限公司技术中心
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