Resource-saving high-efficient green plant-based catalytic functional material
A resource-saving, plant-based technology, applied in the field of new materials, can solve problems such as only primer and middle coating, difficult topcoat, environmental protection loss and so on
Active Publication Date: 2017-11-21
CHANGZHOU JIEMEIXIN POLYMER TECH
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Problems solved by technology
In the actual painting and finishing construction, two problems are often encountered: 1) the color of the cardanol epoxy curing agent is not light enough, it can only be used for primer and middle coat, and it is difficult to be used for top coat; 2) The viscosity of the cardanol epoxy curing agent is not low enough, so that the wet paint film leveling during coating and finishing is poor. If it is diluted with an organic solvent for construction, the environmental protection will be reduced.
Method used
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Embodiment Construction
[0007] On a 1000ml four-port glass reaction kettle, equipped with an electric stirrer, reflux condenser, direct current condenser, thermometer, nitrogen inlet, and feed port, at a stirring speed of 500 rpm, add catechin from the feed port Catalyst, the amount is 0.2-0.5% of the total amount of materials, then add natural plant cardanol, tetraethylenepentamine, paraformaldehyde, the molar ratio is 1.0-1.2: 0.8-1.0: 0.7-1.0, the cardanol purity ≥ 99% , the purity of tetraethylenepentamine is ≥90%, the purity of paraformaldehyde is ≥95%, nitrogen is passed through the kettle to remove oxygen, the reflux condenser is cooled by ice water circulation, and the reaction kettle is heated by an oil bath to raise the temperature inside the kettle to 50±1°C. Keep warm for about 1 hour, the paraformaldehyde solid powder in the kettle completely disappears, and the liquid is turbid, indicating that the three-way polycondensation reaction is complete. Then, implement vacuum dehydration, close...
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Abstract
The invention discloses a resource-saving high-efficient green plant-based catalytic functional material catechin, and belongs to the field of new materials. Catechin is taken as a catalyst for ternary condensation polymerization of natural-plant cardanol, an aldehyde and an amine, and heat preservation at a temperature of 50+ / -1 DEG C for 1 hour is needed only, whereas in the prior art, heat preservation at a temperature of 145 DEG C for 3 hours is needed for completing a reaction, so that energy consumption and manpower consumption are greatly decreased. An obtained synthetic product is a new variety of cardanol epoxy curing agents, which is mixed and used with epoxy resin according to equivalent calculation. Anti-corrosion coating and painting are performed on surfaces of steel, metals and other base materials for formation of cured paint films, which have good mechanical properties, heavy-duty anti-corrosion properties and low-temperature curing properties.
Description
technical field [0001] The invention belongs to the field of new materials, relates to a resource-saving, high-efficiency and green plant-based catalytic functional material, and relates to a new discipline of natural plant polymers. Catalytic functional materials are widely used in epoxy coatings, epoxy inks, and epoxy adhesive industries for anti-corrosion coating and finishing of various engineering construction products. Specifically, they are widely used in power, energy, Anti-corrosion coating and finishing of products in the fields of transportation, ships, aerospace, chemicals, automobiles, electronics, construction, etc. Background technique [0002] Epoxy resin is an important industrial raw material. It is a linear structure with reactive epoxy groups. It must be mixed with an epoxy curing agent to open the epoxy group on the epoxy resin and cure the epoxy. The amino groups on the agent cross-link to form a three-dimensional network-shaped polymer cured product (...
Claims
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IPC IPC(8): C08G59/62C07C213/02C07C215/50
CPCC07C213/02C08G59/62C07C215/50
Inventor 魏亚杰谭正
Owner CHANGZHOU JIEMEIXIN POLYMER TECH