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Epoxy resin adhesive for potting PVDF hollow fiber membrane and preparation method of epoxy resin adhesive

A technology of epoxy resin glue and epoxy resin, which is applied in the direction of epoxy resin glue, adhesive, adhesive type, etc., can solve the problems of increasing the cost of potting collagen materials, not being able to use it alone, and reducing production efficiency, etc., to achieve good Advantages of industrialization, high continuous production efficiency, and easy operation

Inactive Publication Date: 2015-02-25
HUNAN OVAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of polyurethane potting glue is higher than that of epoxy resin glue, and it cannot be used alone because of its weak bonding strength.
The introduction of secondary casting not only increases the raw material cost of the potting compound, but also increases the operating procedures and reduces the production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Preparation of component A: Put 45g of bisphenol A diglycidyl ether, 30g of lauryl glycidyl ether, and 15g of 2-butyl octanol into the reaction kettle, heat to 85°C, and stir at a stirring speed of 80rpm to make the solid raw materials completely Dissolve, add 5g of defoamer prepared by organic phosphonic acid, fatty alcohol and hydrophobic silica in equal mass proportions and 10g of low molecular weight polyurethane polymer, stir fully to make it transparent and clear liquid, cool to room temperature after vacuum defoaming, and obtain A Component. Preparation of component B: add phenol to phenylenediamine, stir at 25°C with a stirring speed of 100rpm, then vacuum defoam, and finally obtain component B.

[0019] Store components A and B in dry, airtight plastic containers, and mix them thoroughly at a weight ratio of 100:25 to obtain epoxy resin glue for PVDF hollow fiber membrane potting, which is used for casting membrane components. After curing for 24 hours, a PVDF...

Embodiment 2

[0021] Preparation of component A: Put 50g of bisphenol A diglycidyl ether, 45g of lauryl glycidyl ether, and 20g of 2-butyl octanol into the reaction kettle, heat to 85°C, and stir at a stirring speed of 80rpm until the solid raw materials are completely Dissolve, add 7g defoamer and 12g low-molecular polyurethane mixture prepared by the mass ratio of organic phosphonic acid, fatty acid ester and hydrophobic silicon dioxide, stir fully to make it a transparent and clear liquid, vacuum defoam for 15 minutes and cool to At room temperature, get A component.

[0022] Preparation of component B: Add resorcinol to a mixture of m-xylylenediamine and tetraethylenepentamine in equal mass proportions, stir at 25°C at a stirring speed of 100rpm, then vacuum defoam, and finally obtain component B .

[0023] Store components A and B in dry, airtight plastic containers, and mix them thoroughly at a weight ratio of 100:15 to obtain epoxy resin glue for PVDF hollow fiber membrane potting, ...

Embodiment 3

[0025] Preparation of component A: Put 40g of bisphenol A diglycidyl ether, 25g of lauryl glycidyl ether, and 15g of 2-butyl octanol into the reaction kettle, heat to 85°C, and stir at a stirring speed of 80rpm until the solid raw materials are completely Dissolve, add 3g of defoamer and 7g of polyol glycidyl ether prepared by the mass ratio of polysiloxane, fatty alcohol and hydrophobic silicon dioxide, stir fully to make it a transparent and clear liquid, vacuum defoaming for 15 minutes and then cool to At room temperature, get A component.

[0026] Preparation of component B: Add salicylic acid to a mixture of equal mass ratios of phenylenediamine and ethylenediamine, stir at 25°C at a stirring speed of 100rpm, then vacuum defoam, and finally obtain component B.

[0027] Store components A and B in dry, airtight plastic containers, and mix them thoroughly at a weight ratio of 100:35 to obtain epoxy resin glue for PVDF hollow fiber membrane potting, which is used for casting...

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PUM

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Abstract

The invention provides an epoxy resin adhesive for potting a PVDF hollow fiber membrane. The epoxy resin adhesive comprises a component A and a component B at a mass ratio of 100 to (15-35), wherein the component A comprises 50-70 parts of epoxy resin, 5-15 parts of a toughening agent and 1-5 parts of a defoaming agent, the component B comprise an amine curing agent, the epoxy resin comprises bisphenol A diglycidyl ether; the toughening agent is a low-molecular polyurethane or polyol glycidyl ether; and the defoaming agent is one or more selected from organic phosphonic acid, polysiloxane, fatty alcohol, fatty acid ester and hydrophobic silicon oxide. The epoxy resin adhesive provided by the invention has the advantages of excellent mechanical property, aging resistance, heat resistance, corrosion resistance, good flexibility and the like, especially, the flexibility is enhanced and the problems of breakage and soaking of a membrane fiber during the potting of the epoxy resin adhesive are solved.

Description

technical field [0001] The invention relates to an epoxy resin glue for encapsulating a polyvinylidene fluoride (PVDF) hollow fiber membrane, a preparation method and an application method thereof. Background technique [0002] Hollow fiber membrane is a kind of polymer microporous membrane, which has a wide range of applications. Compared with other forms of membranes, hollow fiber membranes have the following outstanding advantages: 1) The filling density of membrane filaments is high, and the working area of ​​membrane modules is large; 2) The membrane material is self-supporting, no other support is required, and the preparation process is simple; 3) The cost of the membrane material per unit of water production is low, and the value of application and promotion is great. The material used to prepare hollow fiber membranes can be organic polymers, such as polyvinylidene fluoride, polysulfone, polyethersulfone, polyacrylonitrile, polyethylene, polypropylene, polychloride...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/02C09J11/08C09J11/06C09J11/04
Inventor 路宏伟刘鹏君刘旦陈超彭博叶明明黄涛王纯清
Owner HUNAN OVAY TECH CO LTD
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