Solvent-free unfoamed polyurethane structured adhesive and preparation method thereof

[0032] The A component consists of the following raw materials in parts by mass:

[0033] Castor oil: 20 parts;

[0034] AC-006: 25 copies;

[0035] Silica powder: 47 parts;

[0036] Molecular sieve: 6 parts;

[0037] Bis(2-ethylhexyl) phthalate: 2 parts;

[0038] Described B component is made up of the raw material of following mass parts:

[0039] Polymethylene polyphenylisocyanate PM200: 100 parts;

[0040] A method for preparing the polyurethane structural adhesive described in this embodiment comprises the following steps:

[0041] ①Preparation of component A: Take 20 parts of castor oil, 25 parts of AC-006, 47 parts of silicon micropowder, and 2 parts of bis(2-ethylhexyl) phthalate, and slowly pour them into a three-roll mill to grind and disperse evenly. Transfer the uniformly ground mixture into a mixing reactor, add 6 parts of molecular sieves into the mixing reactor, and vacuumize and stir for 60 minutes under a vacuum degree >0.9MPa to obtain component A;

[004

[0046] The A component consists of the following raw materials in parts by mass:

[0047] T400: 20 copies;

[0048] Castor Oil: 10

[0049] Calcium powder: 50 parts;

[0050] Molecular sieve: 6 parts;

[0051] Oxazolidine water remover: 2 parts;

[0052] Bis(2-ethylhexyl)phthalate: 4 parts;

[0053] Xylene formaldehyde resin: 3 parts;

[0054] Hydrophobic fumed silicon R8200: 4 parts;

[0055] 4,4-bis(sec-butylamino)-diphenylmethane: 1 part;

[0056] Described B component is made up of the raw material of following mass parts:

[0057] Polymethylene polyphenylisocyanate VK10L: 100 parts;

[0058] A method for preparing the polyurethane structural adhesive described in this embodiment comprises the following steps:

[0059] ①Preparation of component A: Take 10 parts of castor oil, 20 parts of T400, 50 parts of calcium powder, 4 parts of bis(2-ethylhexyl) phthalate and 3 parts of xylene formaldehyde resin and slowly pour them into a three-roll mill Grind and disperse even

[0064] The A component consists of the following raw materials in parts by mass:

[0065] AC-006: 20 copies;

[0066] SOVERMOL860: 20 servings;

[0067] Silica powder: 47 parts;

[0068] Molecular sieve: 5 parts;

[0069] Oxazolidine water remover: 1 part;

[0070] Bis(2-ethylhexyl)phthalate: 3 parts;

[0071] Xylene formaldehyde resin: 3 parts;

[0072] Hydrophobic fumed silicon R202: 1 part;

[0073] Described B component is made up of the raw material of following mass parts:

[0074] Polymethylene polyphenylisocyanate Rubinate9016: 100 parts;

[0075] A method for preparing the polyurethane structural adhesive described in this embodiment comprises the following steps:

[0076] ①Preparation of component A: Take 20 parts of AC-006, 20 parts of SOVERMOL860, 47 parts of silicon micropowder, 3 parts of bis(2-ethylhexyl) phthalate and 3 parts of xylene formaldehyde resin and slowly pour into three-roll grinding Grind and disperse evenly in the machine, transfer the evenly g