CN103773215A - Waterproof PU (Poly Urethane) resin coating and production process thereof - Google Patents

Abstract

The invention discloses a waterproof PU (Poly Urethane) resin coating and a production process thereof. The waterproof coating is composed of the following components by weight percent, 20% of PU resin, 20% of polyether 2000, 5% of polyether 3050, 7% of MDI, 5% of iron oxide red, 9% of solvent oil, 2.5% of curing agent (T-108), 0.5% of catalyst, 15% of kaolin, 10% of calcium carbonate, 5% of talcum powder and 1.0% of organic tin. The production process of the waterproof coating comprises the steps of mixing and reacting, cutting, stirring, inspecting finished product, packaging, warehousing and the like; due to the adoption of the technical scheme, the waterproof PU resin coating is nontoxic, and good in waterproofness, flexibility and extensibility. Besides, the production process of the waterproof PU resin coating is few in production process steps, convenient to produce, and clean and environmentally friendly because no impurities or pollutants are generated in the production process.

Description

A kind of PU resin waterproof paint and manufacture craft thereof

Technical field

The present invention relates to a kind of field of waterproof materials, specifically, relate to a kind of PU resin waterproof paint and manufacture craft thereof.

Background technology

Waterproof paint refers to that the film of coating formation can prevent a kind of coating of rainwater or ground water seepage.Polyurethane water-proof paint is a kind of single component environment-friendly type waterproof paint of liquid construction, is take imported polyurethane performed polymer as fundamental component, without the additive such as tar and pitch.It is airborne moisture contact after fixing, forms firm tough and tensile without seam integral waterproofing film of one deck in substrate surface.

Waterproof paint is generally divided into polyurethanes waterproof paint and polymer cement-base waterproof coating, one polyurethanes waterproof paint is to be generally made up as starting material of Polyurethane and coal tar, the tar gas toxicity that it volatilizees is large, and be not easy to remove, therefore be prohibited from using in China in 2000, still at the polyurethane waterproofing coating of selling, be to replace coal tar as raw material with pitch.But in the time using this coating, general employing contains the organic solvent such as toluene, dimethylbenzene dilutes, thereby also containing toxic; Another kind of is polymer cement-base waterproof coating, the emulsion that it is synthesized by multiple waterborne polymeric forms with the high grade cement that is mixed with various additives, the flexibility of polymkeric substance (resin) and the rigidity of cement became one, make its performance aspect impervious and stability excellent, but its shortcoming is that flexibility and extensibility are poor.

Summary of the invention

The technical problem to be solved in the present invention is to overcome above-mentioned defect, provide a kind of nontoxic, water resistance good, the PU resin waterproof paint of flexibility and good-extensibility, and the table technique of this waterproof paint, it is simple that this technique has operation, the feature that make efficiency is high.。

For addressing the above problem, the technical solution adopted in the present invention is:

A kind of PU resin waterproof paint, is characterized in that: waterproof paint is made up of by weight percentage following component:

PU resin 20%, polyethers 200020%, polyethers 30505%, MDI7%, red iron oxide 5%, solvent oil 9%, solidifying agent (T-108) 2.5%, catalyzer 0.5%, kaolin 15%, fine particle calcium carbonate 10%, talcum powder 5%, organotin 1.0%.

As a kind of prioritization scheme:

A manufacture craft for PU resin waterproof paint, is characterized in that: the technical process of described manufacture craft is:

A, PU resin, polyethers 2000, polyethers 3050, MDI, red iron oxide, solvent oil, solidifying agent (T-108), catalyzer, kaolin, fine particle calcium carbonate, talcum powder, organotin are joined in reactor to fully reaction by weight percentage;

B, utilize shears cutting;

C, add after fully stirring, lower the temperature in cooling and stirring tank and get product;

D, finished product chemical examination, packing, warehouse-in

PU is Polyurethane, for polyurethane (Polyurethane, PU) be the product by the synthetic gained of vulcabond (Diisocyanate), polyglycol (Polyol) and short-chain diol, owing to thering is excellent mechanical property and resistance to solvent, oil-proofness, the industry such as be widely used in coating, automobile, synthetic skin, furniture, fiber, building and follow.

PU resin is owing to having soft section of incompatible (Soft Segment, by polyglycol) and hard section (Hard Segment, by vulcabond and chain extension agent), generation is separated, cause hard section in PU film, to present the crystallization phases on similar island, make PU at room temperature have the phenomenon of physical crosslinking (being false crosslinked), though therefore PU molecular weight only has tens thousand of, but due to the produced physical crosslinking that is separated, make its mechanical properties very excellent.

Owing to having adopted technique scheme, that the present invention in use has advantages of is nontoxic, water resistance good, flexibility and good-extensibility.In addition, complete processing operation of the present invention is few, easy to process, does not produce impurity or pollutent, clean environmental protection in production process.

Embodiment

Embodiment 1: a kind of PU resin waterproof paint, is made up of by weight percentage following component:

PU resin 20%, polyethers 200020%, polyethers 30505%, MDI7%, red iron oxide 5%, solvent oil 9%, solidifying agent (T-108) 2.5%, catalyzer 0.5%, kaolin 15%, fine particle calcium carbonate 10%, talcum powder 5%, organotin 1.0%, that the waterproof paint processing by this component and weight percent has advantages of is nontoxic, water resistance good, flexibility and good-extensibility.

Embodiment 2: a kind of manufacture craft of PU resin waterproof paint, technical process is:

A, PU resin, polyethers 2000, polyethers 3050, MDI, red iron oxide, solvent oil, solidifying agent (T-108), catalyzer, kaolin, fine particle calcium carbonate, talcum powder, organotin are joined in reactor to fully reaction by weight percentage;

B, utilize shears cutting;

C, add after fully stirring, lower the temperature in cooling and stirring tank and get product;

D, finished product chemical examination, packing, warehouse-in.

Reactor, shears and stirred pot in this embodiment are prior art, are commercially available prod.

Claims (2)

1. a PU resin waterproof paint, is characterized in that: waterproof paint is made up of by weight percentage following component:

PU resin 20%, polyethers 200020%, polyethers 30505%, MDI7%, red iron oxide 5%, solvent oil 9%, solidifying agent (T-108) 2.5%, catalyzer 0.5%, kaolin 15%, fine particle calcium carbonate 10%, talcum powder 5%, organotin 1.0%.

2. a manufacture craft for PU resin waterproof paint, is characterized in that: the technical process of described manufacture craft is:

A, PU resin, polyethers 2000, polyethers 3050, MDI, red iron oxide, solvent oil, solidifying agent (T-108), catalyzer, kaolin, fine particle calcium carbonate, talcum powder, organotin are joined in reactor to fully reaction by weight percentage;

B, utilize shears cutting;

C, add after fully stirring, lower the temperature in cooling and stirring tank and get product;

D, finished product chemical examination, packing, warehouse-in.