Wood anti-cracking oil and preparation method thereof, solid wood furniture
An anti-cracking, wood-based technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve problems such as poor sealing of oil and tannic acid, penetration out of the paint film surface, poor coating adhesion, etc. Excellent durability and high elongation effect
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[0062] Correspondingly, the embodiment of the present invention also provides a kind of preparation method of wood anti-cracking oil, comprising the following steps:
[0063] S10. Obtain the aromatic diisocyanate adduct, diphenylmethane diisocyanate prepolymer, polyether polyol, antioxidant, defoamer, dehydrating agent and solvent in the formula quantity;
[0064] S20. After mixing the aromatic diisocyanate adduct, the diphenylmethane diisocyanate prepolymer, the polyether polyol, the antioxidant and the first part of the solvent, heat treatment, Obtain the first mixed slurry;
[0065] S30. Mixing the defoamer, the dehydrating agent, the second part of the solvent and the first mixed slurry to obtain wood anti-cracking oil.
[0066]The preparation method of the wood anti-cracking oil provided by the embodiment of the present invention, firstly, the described aromatic diisocyanate adduct, the described diphenylmethane diisocyanate prepolymer, the described polyether polyol, th...
Embodiment 1
[0074] A kind of anti-cracking oil for wood, its components and parts by weight are shown in Table 1:
[0075] Table 1
[0076] components parts by weight Aromatic diisocyanate (TDI) adducts 45 Diphenylmethane diisocyanate (MDI) prepolymer 10 Polyether polyol 10 Ethyl acetate 15 Butyl acetate 8 Propylene glycol methyl ether acetate 5 Defoamer 0.2 antioxidant 0.3 Dehydrating agent 0.5
[0077] In the above table 1, specifically, the aromatic diisocyanate (TDI) adduct is selected from the adduct produced by Covestro, Germany, and the model is Desmodur L 75; the diphenylmethane diisocyanate (MDI) prepolymer is selected from Italy The prepolymer produced by Sabis Company, the model is MD-70AE, the polyether polyol is polyether produced by Covestro, Germany, the model is N210; the defoamer is the defoamer produced by Huaxia Auxiliary Company, the model is It is HX-2300; the antioxidant is selected from the antiox...
Embodiment 2
[0084] A kind of anti-cracking oil for wood, its components and parts by weight are shown in Table 1:
[0085] Table 2
[0086] Aromatic diisocyanate (TDI) adducts 50 Diphenylmethane diisocyanate (MDI) prepolymer 8 Polyether polyol 16 Ethyl acetate 20 Butyl acetate 5 Propylene glycol methyl ether acetate 5 Defoamer 0.3 antioxidant 0.2 Dehydrating agent 0.4
[0087] In the above table 2, the aromatic diisocyanate (TDI) adduct is selected from the adduct produced by Yantai Wanhua Chemical Company, and the model is TL-75E; the polyether polyol is selected from the polyether produced by Dow Chemical Company of the United States, and the model is It is 2110TB; the defoamer is the defoamer produced by Huaxia Auxiliary Company, the model is HX-2300; the dehydrating agent is the dehydrating agent produced by Covestro, Germany, the model is TI. The rest of the place and its preparation process are the same as in Example 1,...
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