Door made of polyurethane and method for manufacturing the same
OwnerZhongping Wanginventor
Life of this patent
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Abstract
A door made of polyurethane, including a door body, the door body including a plurality of integrated plates stacked on one another for supporting. A method for preparing the door includes providing a mold, and spraying a parting agent inside the mold; heating the mold to a temperature of 30-70° C., spraying the parting agent, and placing a plurality of plates or a metal skeleton in the mold; mixing raw materials to obtain a mixture; injecting the mixture into the mold to cover the stacked plates, and curing for 30-90 min; demolding, transferring a product from the mold to a thermostatic chamber for shaping at a constant temperature; trimming uneven edges and surfaces of the product; and spraying a paint on the product.
Claims5
A door comprising a door body (1) comprising polyurethane;
- wherein the door body (1) comprises a plurality of integrated plates (3) stacked on one another for support;
- wherein the door body (1) is made from the following raw materials by weight:
- a)
- a polyether polyol having a molecular weight of
- 5-15;
- 300-350 and a functionality of 4-6
- b)
- a polyether polyol having a molecular weight of
- 30-50;
- 600-700 and a functionality of 4-6
- c)
- a polyether polyol having the molecular weight of
- 20-40;
- 800-900 and the functionality of 4-6
- d)
- a catalyst of 1,8-
- 0.05-0.15;
- Diazabicyclo[5.4.0]undec-7-ene (DBU)
- e)
- pentamethyl diethylenetriamine
- 0.05-0.15;
- f)
- tetramethylethylenediamine
- 0.5-1.5;
- g)
- a triphosphate
- 5-15;
- h)
- melamine
- 5-10;
- i)
- a microencapsulated red phosphorus flame
- 5-10;
- retardant
- j)
- silicone oil
- 1-2;
- k)
- water
- 0-0.5;
- and
- l)
- a polyphenyl methane polyisocyanate
- 110-130.
Dependencies are inferred from the claim text.