Reinforced polyurethane rigid foam material and preparation method therefor

A reinforced polyurethane rigid foam material, comprising following raw materials in parts by weight:

• 5-10 parts of glass fiber yarn, 40-60 parts of aromatic polyether polyol, 30-50 parts of aromatic polyester polyol, 30-50 parts of toluene diisocyanate, 40-60 parts of polymethylene polyphenyl polyisocyanate, 5-10 parts of a flame retardant, 5-15 parts of a foaming agent, 1-5 parts of a catalyst, and 1-5 parts of a surfactant,
• wherein the aromatic polyether polyol has a molecular weight of 400-600, a hydroxyl value of 400-600 mg KOH/g, and a viscosity of 5000-9000 mPa·S;
• the aromatic polyester polyol has a molecular weight of 400-600, a hydroxyl value of 300-500 mg KOH/g, and a viscosity of 4000-6000 mPa·S;
• the aromatic polyether polyol is at least one selected from the group consisting of toluene diamine polyether, bisphenol A polyether, and aniline-formaldehyde polyether;
• and the aromatic polyester polyol is at least one selected from the group consisting of phthalic anhydride polyester polyol and trimellitic anhydride polyester polyol;
• the catalyst is a mixture of a small-molecule amine catalyst and an organotin catalyst;
• the small-molecule amine catalyst is any one or a mixture of two selected from the group consisting of triethylenediamine, tetramethylhexanediamine, and triethylamine;
• and the organotin catalyst is any one or a mixture of two selected from the group consisting of stannous octoate and dibutyltin diacetate;
• the flame retardant is any one or a mixture of two selected from the group consisting of tris(2-chloroethyl)phosphate, tris(2-chloropropyl)phosphate, and tris(dichloropropyl)phosphate, and the foaming agent is any one or a mixture of two selected from the group consisting of pentafluoropropane and trans-1-chloro-3,3,3-trifluoropropylene;
• and
• the surfactant is a polysiloxane polymer with a viscosity of 200-600 mPa's and a moisture content of less than 0.05%, and the surfactant is any one or a mixture of two selected from the group consisting of polysiloxane-ethylene oxide AB type linear block copolymer and polysiloxane-propylene oxide ABA type linear block copolymer.