Microporous polyurethane elastomer shock absorption element for high-speed railway and preparation method thereof

[0027] (1) The mixture (I) includes the following raw materials:

[0028] Polytetrahydrofuran ether polyol 23 parts,

[0029] 4.5 parts of ethylene glycol,

[0030] 2.8 parts of 3,3'-dichloro-4,4'-diaminodiphenylmethane,

[0031] 0.3 parts of water,

[0032] 0.3 parts of silicone oil,

[0033] Triethylenediamine / stannous octoate 0.15 / 0.05 parts;

[0034] (2) The semi-prepolymer (II) includes the following raw materials:

[0035] 2.5 parts of organic nano kaolin,

[0036] Polytetrahydrofuran ether glycol (dehydrated) 26.4 parts,

[0037] 40 parts of diphenylmethane diisocyanate.

[0038] (3) The specific preparation method is as follows:

[0039] (1) Mixture (I): 23 parts of polytetrahydrofuran ether polyols (functionality is 3, average molecular weight is 3000, without dehydration treatment), 4.5 parts of ethylene glycol, 2.8 parts of 3,3'-dichloro-4, 4'-diaminodiphenylmethane, 0.3 part of water, 0.3 part of silicone oil, 0.15 part of 33% triethylenediamine solution an

[0043] (1) The mixture (I) includes the following raw materials:

[0044] 30 parts of polypropylene glycol-glycerol ether,

[0045] 5 parts of propylene glycol,

[0046] 2 parts of dimethylthiotoluenediamine,

[0047] 0.2 parts of water,

[0048] 0.2 parts of silicone oil,

[0049] Triethylenediamine / dibutyltin dilaurate 0.17 / 0.08 parts;

[0050] (2) The semi-prepolymer (II) includes the following raw materials:

[0051] 3.5 parts of nano kaolin,

[0052] 24 parts of polypropylene glycol (dehydrated),

[0053] 35 parts of diphenylmethane diisocyanate.

[0054] (3) The specific preparation method is as follows:

[0055] (1) Mixture (I): 30 parts of polypropylene glycol-glycerol ether (functionality is 3, average molecular weight is 4000, without dehydration treatment), 5 parts of propylene glycol, 2 parts of dimethylthiotoluenediamine, 0.2 parts of water, 0.2 parts of silicone oil, 0.17 parts of 33% triethylenediamine solution and 0.08 parts of dibutyltin dilaurate an

[0059] (1) The mixture (I) includes the following raw materials:

[0060] 40 parts of polytetrahydrofuran ether polyols,

[0061] 3.5 parts of 1,4-butanediol,

[0062] Dimethylthiochlorophenylenediamine 1.5 parts,

[0063] 0.4 parts of water,

[0064] 0.35 parts of silicone oil,

[0065] Triethylenediamine / dibutyltin dilaurate 0.23 / 0.07 parts;

[0066] (2) The semi-prepolymer (II) includes the following raw materials:

[0067] 6 parts of organic nano kaolin,

[0068] 17.95 parts of polytetrahydrofuran ether glycol (dehydrated),

[0069] 30 parts of liquefied diphenylmethane diisocyanate.

[0070] (3) The specific preparation method is the same as in Example 2.