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Novel melt-blown cloth coated PTFE compounded material and preparation process thereof

A technology of PTFE and preparation process, which is applied in the field of melt-blown cloth-coated PTFE composite new material and its preparation process, which can solve the problems of low filtration resistance, poor stretch resistance, and large specific surface area, so as to increase filtration efficiency and increase material The effect of resistance

Pending Publication Date: 2020-11-10
江苏康隆迪超净科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the enhancement of today's health awareness, people's daily work and air quality requirements for the living environment are also constantly improving. Compared with source control and ventilation dilution, air filtration is one of the effective methods to solve air quality problems. Commonly used PTFE micro As a microporous, high-flux organic film, the porous membrane is often used in the field of air dust removal. However, due to its thin thickness and poor tensile resistance, it must be combined with a support material in practical applications to form a PTFE microporous membrane composite filter material. , non-woven melt-blown materials have the characteristics of small fiber diameter, large specific surface area, and low filtration resistance, and are often used as air filter materials

Method used

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  • Novel melt-blown cloth coated PTFE compounded material and preparation process thereof
  • Novel melt-blown cloth coated PTFE compounded material and preparation process thereof

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Experimental program
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Effect test

Embodiment 1

[0034] A kind of preparation technology of melt-blown cloth coated film PTFE composite new material, comprises the following steps:

[0035] Step S1, sieving raw materials: sieve the PTFE suspension resin through a 10-mesh sieve, add additive oil and mix evenly in a certain proportion to obtain a mixture, which is set aside;

[0036] Step S2, compression molding: the mixture in step S1 is molded by a hydraulic press at 35 MPa to obtain a molded product, which is taken out for later use;

[0037] Step S3, sintering: put the molded product obtained in step S2 into a sintering furnace for heating and sintering, after the sintering is completed, cool down to room temperature to obtain a sintered product, take it out for use;

[0038] Step S4, turning, turning the sintered product obtained in step S3 on a lathe to obtain a turning film;

[0039] Step S5, melt stretching: stretching the lathe film obtained in step S4 after calendering, drying, to obtain a PTFE film;

[0040] In st...

Embodiment 2

[0052] A kind of preparation technology of melt-blown cloth coated film PTFE composite new material, comprises the following steps:

[0053] Step S1, sieving raw materials: sieve the PTFE suspension resin through a 10-mesh sieve, add additive oil and mix evenly in a certain proportion to obtain a mixture, which is set aside;

[0054] Step S2, compression molding: the mixture in step S1 is molded by a hydraulic press at 40 MPa to obtain a molded product, which is taken out for later use;

[0055] Step S3, sintering: put the molded product obtained in step S2 into a sintering furnace for heating and sintering, after the sintering is completed, cool down to room temperature to obtain a sintered product, take it out for use;

[0056] Step S4, turning, turning the sintered product obtained in step S3 on a lathe to obtain a turning film;

[0057] Step S5, melt stretching: stretching the lathe film obtained in step S4 after calendering, drying, to obtain a PTFE film;

[0058] In st...

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Abstract

The invention belongs to the technical field of PTFE (polytetrafluoroethylene) materials, and particularly relates to a novel melt-blown cloth coated PTFE compounded material and a preparation processthereof. The preparation process comprises the steps that PTFE suspension resin is screened into powder through a screen, the powder is evenly mixed with auxiliary oil according to a certain proportion, and PTFE films are obtained after compression molding, sintering, turning and melt stretching; the two sides of a filtering material with high air permeability are coated with the PTFE films through a hot compress machine, and the PTFE films are compounded with melt-blown cloth in a hot rolling mode to form the novel compounded material; and the ratio of the PTFE powder to the auxiliary oil is1: (0.25-0.27), the particle size of the PTFE suspension resin is 20-100 microns, the filtering material is one or more of PET polyester, PBT polyester, carbon fiber and glass fiber, and the auxiliary oil adopts Mobil oil. According to the prepared novel compounded material, the filtering efficiency of the material can be effectively improved, meanwhile, the material resistance is increased to asmall extent, and the filtering requirements of different grades can be met.

Description

technical field [0001] The invention belongs to the technical field of PTFE materials, and in particular relates to a new melt-blown cloth-coated PTFE composite material and a preparation process thereof. Background technique [0002] Polytetrafluoroethylene (Teflon or PTFE), commonly known as the "King of Plastics", is a polymer compound formed by polymerization of tetrafluoroethylene, which has excellent chemical stability, corrosion resistance, sealing, high lubrication and non-stick properties, electrical Insulation and good aging resistance. [0003] With the enhancement of today's health awareness, people's daily work and air quality requirements for the living environment are also constantly improving. Compared with source control and ventilation dilution, air filtration is one of the effective methods to solve air quality problems. Commonly used PTFE micro As a microporous, high-flux organic film, the porous membrane is often used in the field of air dust removal. H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C69/00C08J5/18C08L27/18C08L91/00B29K27/18B29L7/00B29L31/14
CPCB29C69/001C08J5/18B29K2027/18B29L2007/00B29L2031/14C08J2327/18C08J2491/00
Inventor 李士亮
Owner 江苏康隆迪超净科技有限公司