Polyurethane for TV background wall and preparation method thereof
A background wall and polyurethane technology, which is applied in the field of building decoration engineering, can solve the problems of increasing the cost of the TV background wall, easily producing volatile gas, and high price of modified MDI, and achieves low product prices, non-toxic production process, and reduced raw materials. cost effect
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Embodiment 1
[0020] A kind of polyurethane for TV background wall, made of the following components A and B by weight:
[0021] A component:
[0022] Polyether polyol (DEP-330N produced by Dexin Federal, hydroxyl value: 34mgKOH / g, main polyether) 60 parts
[0023] Polymer polyol (POP3628 produced by Dexin Federal, to control product hardness) 40 parts
[0024] 3.5 parts of deionized water
[0025] Foam stabilizer polydimethylsiloxane (AK7733) 1 part
[0026] Cell opener (Dexin Federal DEP-505S) 2 parts
[0027] Catalyst stannous octoate (T9) 0.05 part
[0028] Propylene glycol solution (A33) of catalyst triethylenediamine 0.8 parts
[0029] 1.5 parts of cross-linking agent diethanolamine
[0030] B component:
[0031] Polymethylene polyphenyl polyisocyanate (PAPI) 40 parts
[0032] Wherein, in the propylene glycol solution of the catalyst triethylenediamine in component A, the mass fraction of triethylenediamine is 33%, and the weight part is the weight part of the solution.
[00...
Embodiment 2
[0035] A kind of polyurethane for TV background wall, made of A component and B component according to the following parts by weight:
[0036] A component:
[0037] Polyether polyol (DEP-330N produced by Dexin Federal, hydroxyl value: 34mgKOH / g, main polyether) 70 parts
[0038] Polymer polyol (POP3628 produced by Dexin Federal, to control product hardness) 30 parts
[0039] Deionized water (chemical blowing agent) 2.5 parts
[0040] Foam stabilizer AK7733 0.8 parts
[0041] Cell opening agent (polyether polyol DEP-505S produced by Dexin Federal) 2 parts
[0042] Catalyst T9 0.05 part
[0043] Catalyst A33 0.8 parts
[0044] 1.5 parts of cross-linking agent diethanolamine
[0045] B component:
[0046] Polymethylene polyphenyl polyisocyanate (PAPI) 38 parts
[0047] Wherein, in the propylene glycol solution of the catalyst triethylenediamine in component A, the mass fraction of triethylenediamine is 33%, and the weight part is the weight part of the solution.
[0048]...
Embodiment 3
[0050] A kind of polyurethane for TV background wall, made of A component and B component according to the following parts by weight:
[0051] A component:
[0052] Polyether polyol (DEP-330N produced by Dexin Federal, hydroxyl value: 34mgKOH / g, main polyether) 80 parts
[0053] Polymer polyol (POP3628 produced by Dexin Federal, to control product hardness) 20 parts
[0054] Chemical foaming agent deionized water 1.5 parts
[0055] Foam stabilizer AK7733 0.5 parts
[0056] Cell opening agent (polyether polyol DEP-505S produced by Dexin Federal) 2 parts
[0057] Catalyst T9 0.05 part
[0058] Catalyst A33 0.8 parts
[0059] 1.5 parts of cross-linking agent diethanolamine
[0060] B component:
[0061] Polymethylene polyphenyl polyisocyanate (PAPI) 35 parts
[0062] Wherein, in the propylene glycol solution of the catalyst triethylenediamine in component A, the mass fraction of triethylenediamine is 33%, and the weight part is the weight part of the solution.
[0063] M...
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