UV-cured soft coating paint composition and preparation method thereof
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A composition and coating technology, used in coatings, polyurea/polyurethane coatings, etc., can solve the problems of lack of coating film performance and optimized performance, and achieve the effect of fast curing speed and excellent film-forming performance
Active Publication Date: 2016-10-26
瑞通高分子科技(浙江)有限公司
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[0033] The synthesis of oligomers was carried out according to the data listed in the table
[0034] Table 1 Oligomer synthesis formula
[0035]
[0036] Pump the above components 1, 3, and 4 into the reactor, add 2 components dropwise, control the temperature at 80-82°C for 4 hours, then add 5 components, react at 82-85°C for 8 hours, and detect NCO <0.2% can be discharged for later use.
[0037] The PAU1 related indicators: viscosity 20000mpa.s / 45°C; NCO: 0.15%.
[0039] The synthesis of oligomers was carried out according to the data listed in the table
[0040] Table 2 Oligomer Synthetic Formula
[0041]
[0042]
[0043]Pump the above components 1, 3, and 4 into the reactor, add 2 components dropwise, control the temperature at 80-82°C for 4 hours, then add 5 components, react at 82-85°C for 8 hours, and detect NCO <0.2% can be discharged for later use.
[0044] The PAU2 related indicators: viscosity 18500mpa.s / 45°C; NCO: 0.10%.
[0046] The coating is prepared according to the formula in Table 3.
[0047]
[0048] The above components are formulated into paint, and the relevant indicators measured are: viscosity 2500mpa.s / 25°C; fineness: <10um;
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Abstract
The invention relates to UV-cured soft coating paint and a preparation method thereof, and provides an ultraviolet light cured optical fiber internal coating composition. The composition is prepared from low polymer, diluted monomer, catalyst, initiator and co-initiator, wherein the catalyst specially points to organotin catalyst with usage amount of 1-2%; the co-initiator has to be active amine with usage amount of 1-3%; the low polymer is a reaction product of the following materials: hydroxyl-containing acrylate, aliphatic isocyanate, poly(epsilon-caprolactone glycol), polymerization inhibitor and catalyst, wherein the number average molecular weight of the low polymer is about 2000g/mol, and the molecular weight of the poly(epsilon-caprolactone glycol) is about 1000. A cured membrane of the composition has glass transition temperature of about 5DEG C-10DEG C, modulus of 8MPa-10MPa and close bend of greater than 100 times.
Description
technical field [0001] The invention belongs to the field of preparation of UV (ultraviolet light curing) coatings, and particularly relates to a preparation method of an ultraviolet light curing soft coating. Background technique [0002] Soft coating is a popular coating product in recent years, especially applied to leather, fabric, photoelectric coating, furniture and building materials, which are soft decoration materials. Applying a coating on it cannot change the softness of the material, and the coating must have soft properties, which cannot change the relative practicability of the material. Traditional soft coatings are all solvent-based, which does not meet current environmental protection requirements. So it is very important to develop an environmentally friendly functional soft coating. [0003] UV curing is the most advanced film-forming technology in the current period. Ultraviolet curing is a process in which ultraviolet (UV) is used to irradiate liquid ...
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