” >Paint is a material that is often seen in life. When using it, we often use paint curing agent for bonding, but many people don’t knowThe role of paint hardener, and I don’t know what paint hardener is. TodayShanghai Kaiyin Chemicalsmall The editor will introduce the details to you, hoping to help you.
” >What is paint curing agent
” >Paint curing agent is a material specially used in paint, which can speed up the drying of paint and promote the drying speed of paint.
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” >Types of paint curing agents
” >Curing agentsAccording to their uses, they can be divided into room temperature curing agents and heating curing agents.
” >Epoxy resin generally has excellent performance when cured at high temperatures. However, coatings and adhesives used in civil construction need to be cured at room temperature due to difficulty in heating. Therefore, fatty amines, cycloaliphatic agents, polyamides, etc. are mostly used. Especially coatings and adhesives used in winter have to be used together with polyisocyanates, or polymercaptans with a foul smell are used.
” >Medium temperature curing agent and high temperature curing agent are based on the heat resistance of the substrate and the heat resistance, adhesion and chemical resistance of the cured product. Choose as a basis. The selection focuses on polyamines and acid anhydrides. Since the acid anhydride cured product has excellent electrical properties, it is widely used in electronics and electrical appliances.
” >Aliphatic polyamine cured products have excellent adhesiveness, alkali resistance, and water resistance. Aromatic polyamines are also excellent in chemical resistance.
” >What are the functions of paint curing agent
” >1. Physical drying effect: The molecules inside the paint directly react with oxygen in the air to achieve the purpose of drying.
” >2. Chemical curing: Curing agent reacts with the main paint to increase the hardness, brightness and adhesion of the paint film. Improve the chemical stability and anti-corrosion capabilities of paint. It can make the paint film full and delicate, smooth and elastic, wear-resistant and not easy to scratch.
” >3. Curing agent can also speed up the painting of primer and panel.
” >4. Accelerate the curing time of the primer, if The slow curing time of primer also delays the time of topcoat. If time is not urgent, some primers do not add a curing agent, and you need to wait until the primer is completely dry before you can top coat. So it’s also a waste of time.
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