Polyurethane pouring sealant for water treatment curtain type membrane assembly and preparation method thereof

A curtain membrane and water treatment technology, applied in polyurea/polyurethane adhesives, chemical instruments and methods, membrane technology, etc., can solve the problems of slow flow of ABS potting glue for narrow and long shells, easy cracking when cured and cut, etc., to achieve Convenient construction, good bonding effect, and easy control of conditions

Inactive Publication Date: 2018-01-26
山东奥卓新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Based on the above-mentioned problems in the prior art, the present invention provides a high-hardness polyurethane potting compound suitable for the application of water treatment curtain membrane modules, which solves the problem of slow flow and easy curing and cutting of the potting compound for the ABS narrow and long shell of the curtain type membrane module. cracking problem

Method used

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  • Polyurethane pouring sealant for water treatment curtain type membrane assembly and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This embodiment provides a new type of high-hardness polyurethane potting compound suitable for water treatment curtain membrane modules, and its preparation method specifically includes:

[0044] 1. Prepare component a):

[0045] (1) Add 50.0g of refined castor oil into a dry and clean three-necked flask equipped with a thermometer, a stirring device, and a condenser, and dehydrate under vacuum at 115°C for two hours;

[0046] (2) Lower the temperature below 80°C, then add 950.0g of PAPI, and react at 80°C for 2 hours. The reaction process is protected by nitrogen gas, and the NCO content is determined to be close to the theoretical value to obtain component a);

[0047] 2. Prepare component b):

[0048] (1) Add 50.0g of GEP-330N, 570.0g of refined castor oil, and 300.0g of Desmophen 1150 into a dry and clean three-neck flask equipped with a thermometer, a stirring device, and a condenser, and vacuum dehydrate at 115°C for 2 hours; cool down Add 30g of polymeric MDI ...

Embodiment 2

[0061] The preparation process of this example is basically the same as that of Example 1, the difference being that the raw material composition and weight of component a) and component b) are slightly different. The polyurethane encapsulant and its preparation method specifically include:

[0062] 1. Prepare component a):

[0063] (1) Add 97.0g of refined castor oil to a dry and clean three-necked flask equipped with a thermometer, a stirring device, and a condenser, and dehydrate under vacuum at 115°C for 2 hours;

[0064] (2) Lower the temperature below 80°C, then add 900.0g of PAPI, and react at 80°C for 2 hours. The reaction process is protected by nitrogen gas, and the measured NCO content is close to the theoretical value. Lower the temperature below 50°C and add 3g of IRGANOX 1135 to obtain component a).

[0065] 2. Prepare component b):

[0066] (1) Add 50.0g of GEP-330N, 570.0g of refined castor oil, and 321.0g of Desmophen 1150 into a dry and clean three-neck fl...

Embodiment 3

[0071] The preparation process of this example is basically the same as that of Example 1, the difference being that the raw material composition and weight of component a) and component b) are slightly different. The polyurethane encapsulant and its preparation method specifically include:

[0072] 1. Prepare component a):

[0073] (1) Add 95.0g of TMD-3000 into a dry and clean three-necked flask equipped with a thermometer, a stirring device and a condenser, and dehydrate under vacuum at 115°C for two hours;

[0074] (2) Lower the temperature below 80°C, then add 900.0g of liquefied MDI, and react at 80°C for 2 hours. The reaction process is protected by nitrogen gas, and the measured NCO content is close to the theoretical value. Lower the temperature below 50°C and add 5g of IRGANOX 1135 to obtain component a).

[0075] 2. Prepare component b):

[0076] (1) Add 50.0g of 520.0g of refined castor oil and 414.0g of Desmophen 1150 to a dry and clean three-neck flask equippe...

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Abstract

The invention provides a two-component high-hardness polyurethane pouring sealant suitable for fixing a water treatment curtain type membrane assembly, wherein the pouring sealant is prepared by mixing a component A of hydroxyl compound-modified isocyanate and a component B composed of a polymerized MDI modified hydroxyl compound according to the weight ratio of (50-90):100. The polyurethane pouring sealant has the advantages of high curing hardness, proper mixing viscosity, convenient construction, moderate curing speed, low heat release peak value, no bubbling, good bonding effect, environmental protection, no pollution, and excellent acid and alkali resistance and weather resistance. The process is simple, the condition is easy to control, and automatic production is easy to realize. The polyurethane pouring sealant is fully satisfied with technical requirements of the water treatment curtain type membrane assembly on the application process and product performance of the pouring sealant.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a novel high-hardness polyurethane potting adhesive suitable for water treatment curtain membrane components and a preparation method thereof. Background technique [0002] The membrane filtration method using ultrafiltration membrane with pressure difference as the driving force is ultrafiltration membrane filtration. Ultrafiltration membranes are suitable for the separation and concentration of solutes in solutions, and are also commonly used for the separation of colloidal suspensions that are difficult to complete with other separation techniques. They are widely used in the pharmaceutical industry, food industry, and environmental engineering. Polyvinylidene fluoride (PVDF) is currently the most widely used ultrafiltration membrane material. It has good corrosion resistance and strong anti-fouling ability. It is a kind of difficult-to-stick material. The ultrafiltration me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C08G18/76C08G18/36C08G18/32C08G18/79B01D63/00B01D65/00
Inventor 高明张旭东周思伟汪军钟自勉
Owner 山东奥卓新材料有限公司
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