Natural raw lacquer-based tannin-enriched waterborne primer and preparation method thereof
A water-based primer and preparation method technology, applied in natural resin coatings, coatings, etc., can solve problems such as poor adhesion and storage resistance, peeling, and long film-forming time, improve viscosity and fluidity, and increase hydroxyl groups. Cell structure, the effect of improving adhesion
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Embodiment 1
[0032] 1. In the present embodiment, natural raw lacquer (Raw laequer) is the product obtained by engraving the phloem of sumac (Rhus verniciflua Stokes), derived from Chinese sumac (Toxicodendron uerniciflua) and Vietnam sumac (Toxicodendron succedance) and other sumac (Toxicodendron succedance) and engraving its phloem to obtain The lacquer tree sap is preferably Hubei Maoba lacquer and Shaanxi Pingli lacquer with a urushiol content greater than 70%, and Vietnamese lacquer with an urushiol content greater than 60%.
[0033] 2. Pretreatment of natural lacquer: take 1 kg of Hubei Maoba lacquer with urushiol content greater than 70%, Shaanxi Pingli lacquer and Vietnamese lacquer with urushiol content greater than 60% or their mixed lacquer, and put it into a jacketed In the reactor, the heating temperature in the water bath is 45°C, and the mixture is stirred at a low speed of 120r / min for 30min, and filtered with an 80-mesh filter cloth to obtain the pretreated natural lacquer;...
Embodiment 2
[0043] 1. In the present embodiment, natural raw lacquer (Raw laequer) is the product obtained by engraving the phloem of sumac (Rhus verniciflua Stokes), derived from Chinese sumac (Toxicodendron uerniciflua) and Vietnam sumac (Toxicodendron succedance) and other sumac (Toxicodendron succedance) and engraving its phloem to obtain The lacquer tree sap is preferably Hubei Maoba lacquer with a urushiol content greater than 70% and Vietnamese raw lacquer with an urushiol content greater than 60%.
[0044] 2. Pretreatment of natural lacquer: take Hubei Maoba lacquer with urushiol content greater than 70% and Vietnamese lacquer with urushiol content greater than 60% or their mixed lacquer 1kg, put it into a jacketed reactor, and put it in a water bath Heating temperature 45°C, 120r / min low-speed stirring for 30min, filter with 80 mesh filter cloth to get the pretreated natural lacquer;
[0045] 3. Preparation of plant extracts rich in tannins: select the roots, stems, leaves, flowe...
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