Epoxy-based pouring sealant for end capping of PVDF ultrafiltration membrane assembly and preparation method of epoxy-based pouring sealant
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An ultrafiltration membrane, epoxy-based technology, applied in the direction of epoxy resin glue, adhesive, adhesive type, etc., can solve the problems of high exothermic temperature, cracking and shelling, discoloration of epoxy glue burning film, etc. The effect of heat of reaction, good flexibility protection, excellent chemical resistance
Active Publication Date: 2017-05-31
康达新材料(集团)股份有限公司
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Problems solved by technology
[0007] One of the technical problems to be solved by the present invention is to provide an epoxy-based potting glue for sealing the end of PVDF ultrafiltration membrane module, which can solve the problem of high exothermic temperature under the premise of satisfying a series of excellent performances of the membrane module after the potting glue is cured. The problem of cracking and shelling caused by it, at the same time solve the problem of discoloration of epoxy adhesive film, and overcome the contradiction between bonding positioning hardness and flexibility, mixed viscosity and climbing wire height
Method used
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Embodiment 1
[0050] Epoxy resin component A raw material parts by weight:
[0051]
[0052] Denatured aromatic aliphatic amine raw material parts by weight:
[0053]
[0054] Curing agent component B raw material parts by weight:
[0055]
[0056] Preparation:
[0057] Preparation of epoxy resin component A:
[0058] According to the weight percentage of raw materials, first add epoxy resin, active toughening agent, active diluent, and functional additives into the reactor in sequence, keep stirring and mixing in the temperature range of 25°C-75°C for 3-6h, turn off the stirring and let it stand , to prepare epoxy resin component A, and put the discharged material into a sealable container for room temperature storage.
[0059] Preparation of denatured aromatic aliphatic amines:
[0060] According to the weight percentage of raw materials, add m-xylylenediamine and catalyst into reactor I in advance, stir and mix for 0.5-1.5h and raise the temperature to 45°C-50°C for later us...
Embodiment 2
[0067] Epoxy resin component A raw material parts by weight:
[0068]
[0069] Denatured aromatic aliphatic amine raw material parts by weight:
[0070]
[0071] Curing agent component B raw material parts by weight:
[0072]
[0073]
[0074] The mixing weight ratio of epoxy resin component A and curing agent component B is 100:45.
Embodiment 3
[0076] Epoxy resin component A raw material parts by weight:
[0077]
[0078] Denatured aromatic aliphatic amine raw material parts by weight:
[0079]
[0080] Curing agent component B raw material parts by weight:
[0081]
[0082] The mixing weight ratio of epoxy resin component A and curing agent component B is 100:50.
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Abstract
The invention discloses an epoxy-based pouring sealant for end capping of a PVDF ultrafiltration membrane assembly and a preparation method of the epoxy-based pouring sealant. The epoxy-based pouring sealant comprises a component A and a component B. The component A is prepared from epoxy resin, an active flexibilizer, an active diluent and a functional assistant. The component B is prepared from degenerative aromatic fatty amine, a flexible amine curing agent, special phenolic aldehyde amine and an accelerant. Degenerative aromatic fatty amine is degenerated based on m-xylylenediamine. Epoxy glue has high toughness, certain flexibility is achieved for the root of membrane silk of the ultrafiltration membrane assembly, and therefore the silk breakage problem is relieved; corrosion of the epoxy glue to the PVDF membrane silk is eliminated, the reddish brown blackening phenomenon of the membrane silk of the ultrafiltration membrane assembly is eliminated, and the membrane silk is kept intact. The requirements of the end capping process of ultrafiltration membrane assemblies of multiple types can be met, adhesion is excellent after end-capping curing is completed, chemical medium resistance is good, the durable ultrafiltration membrane assembly can be prepared, and the ultrafiltration membrane assembly is suitable for being applied to the field of industrial sewage treatment of wide occasions.
Description
technical field [0001] The invention relates to the technical fields of chemical industry and environmental protection, in particular to an assembly material used for water treatment and environmental protection equipment, in particular to an epoxy-based potting glue for sealing the end of a PVDF ultrafiltration membrane module used in a sewage ultrafiltration processor and its preparation method. Background technique [0002] People in the world today continue to face the dilemma of shortage of fresh water resources and serious water pollution. Traditional water treatment methods have long been unable to meet the refined requirements of various complex wastewater or high-saline saline water. Membrane technology is a modern water treatment technology that was truly developed in the middle and late part of the last century. It is now developing vigorously. It is estimated that the output value of functional membranes will exceed 250 billion by 2020, with an average annual gro...
Claims
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Application Information
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