Novel polyurethane waterproof coating and preparation method thereof
A new type of polyurethane waterproof technology, applied in the field of coatings, can solve the problems of environmental protection, unfavorable human health, and high process requirements, and achieves the effects of low curing shrinkage, suitable for promotion and application, and high solid content.
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Embodiment 1
[0026] This embodiment provides a novel polyurethane waterproof coating, consisting of A component and B component,
[0027] The A component is composed of the following raw materials in parts by weight: 250 parts of polyether N-240, 450 parts of polyether N-3050, 350 parts of diphenylmethane diisocyanate;
[0028] The B component is composed of the following raw materials in parts by weight: 350 parts of polyether N-330, 550 parts of heavy calcium, 2 parts of antioxidant (B225), ultraviolet absorber (2-hydroxy-4-n-octyloxydi Benzophenone) 2 parts, 15 parts of toner, 50 parts of p-di-o-chloroaniline methane, 3 parts of organic zinc catalyst (zinc isooctanoate).
[0029] The weight ratio of the A component and the B component is 1:2.
[0030] Further, a method for preparing the novel polyurethane waterproof coating is provided, comprising the steps of:
[0031] (1) Preparation of component A: Add polyether N-240 and polyether N-3050 to the reactor, heat to 100°C, stir at a sp...
Embodiment 2
[0035] This embodiment provides a novel polyurethane waterproof coating, consisting of A component and B component,
[0036] The A component is composed of the following raw materials in parts by weight: 200 parts of polyether N-240, 400 parts of polyether N-3050, 300 parts of diphenylmethane diisocyanate;
[0037] The B component consists of the following raw materials in parts by weight: 300 parts of polyether N-330, 500 parts of heavy calcium, 1 part of antioxidant (B225), ultraviolet absorber (2-hydroxy-4-methoxydiphenyl ketone) 1 part, toner 10 parts, p-di-o-chloroaniline methane 40 parts, organic bismuth catalyst (DY-20) 1 part;
[0038] The weight ratio of the A component and the B component is 1:1.
[0039] Further, a method for preparing the novel polyurethane waterproof coating is provided, comprising the steps of:
[0040] (1) Preparation of component A: Add polyether N-240 and polyether N-3050 to the reactor, heat to 100°C, stir at a speed of 1000r / min for 1h, an...
Embodiment 3
[0044] This embodiment provides a novel polyurethane waterproof coating, consisting of A component and B component,
[0045] The A component is composed of the following raw materials in parts by weight: 300 parts of polyether N-240, 500 parts of polyether N-3050, 400 parts of diphenylmethane diisocyanate;
[0046]The B component is composed of the following raw materials in parts by weight: 400 parts of polyether N-330, 600 parts of heavy calcium, 3 parts of antioxidant (B215), 3 parts of ultraviolet absorber (resorcinol monobenzoate) , 20 parts of toner, 60 parts of p-di-o-chloroaniline methane, 5 parts of organozinc catalyst (KRZN1);
[0047] The weight ratio of the A component and the B component is 1:3.
[0048] Further, a method for preparing the novel polyurethane waterproof coating is provided, comprising the steps of:
[0049] (1) Preparation of component A: Add polyether N-240 and polyether N-3050 to the reactor, heat to 110°C, stir at a speed of 2000r / min for 2 ho...
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