Unlock instant, AI-driven research and patent intelligence for your innovation.

Single-layer or multi-layer filter material and its manufacturing method

A filter material, multi-layer filtration technology, applied in the direction of filtration separation, separation methods, chemical instruments and methods, etc., can solve problems such as difficult punching and folding, curing at room temperature within a few hours

Inactive Publication Date: 2011-12-28
NEENAH GESSNER GMBH
View PDF1 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But an epoxy impregnation process with only cold-crosslinking hardeners can react so quickly that the filter material is already fully cured after drying or within a few hours at room temperature.
The filter material is therefore brittle and can only be processed further under very difficult conditions
Can only be punched and folded with great difficulty

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] on inclined screen paper machine The mass per unit area of ​​manufacturing is 100g / m 2 and air permeability of 860 l / m 2 s, impregnated on a laboratory soft silk cloth (-foulard) and dried at 80° C. in a ventilated drying oven for 15 minutes. The impregnation is carried out with a mixture of the following substances:

[0033] 10g Huntsman's epoxy resin Araldit GY 250

[0034] 2g S.I.Q curing agent 1 SIQ Amin 2030

[0035] 2g Alzchem's curing agent 2 dicyandiamide

[0036] Accelerator 2-methylimidazole of 0.5g BASF company

[0037] 100g methanol

[0038] The content of the impregnating agent was 19% by weight relative to the mass by area of ​​the impregnating medium. Bursting strength, air permeability, mass by area, longitudinal bending stiffness in wet condition, longitudinal bending stiffness in dry condition, quick-drying (Rücktrocknung-) performance, hot oil resistance, post-oxidation ( Nachverzunderungs-) performance as well as phenol and formaldehyde emis...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a single or multi-layer filter material, comprising at least one layer made of cellulose, glass fiber, synthetic fiber, or a mixture thereof, and saturated with a binding agent made of an epoxy resin and a curing agent. The hardening agent comprises a first hardener cross-linking at a lower temperature, and a second hardener cross-linking at a higher temperature, so that the epoxy resin can be hardened stepwise depending on the temperature.

Description

field of invention [0001] The invention relates to an impregnated filter material which, during processing and use, does not release phenol or formaldehyde into the environment, to a filter element produced thereby and to a method for producing said filter material. Background technique [0002] Filter materials for the automotive sector and industrial applications generally consist of cellulose and / or synthetic fibers. They are mainly used to filter fuel, oil, gas, water and their mixtures. Here, high demands are placed on the burst strength and rigidity in the wet and dry state. In addition, they should be resistant to aggressive environmental conditions and high temperatures. [0003] A porous web made of cellulose, glass fibers, synthetic fibers or mixtures thereof is used as the base material of the filter. Since the selection of a suitable fiber type is primarily a function of the requirements imposed on the porosity, air permeability and density of the filter mater...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/16
CPCB01D39/163Y10T156/1043B01D67/00B01D39/16
Inventor W·赫尔J·宁蒂特U·卡尔
Owner NEENAH GESSNER GMBH