Preparation method of polythionocarbamate adhesive
A polythiourethane and adhesive technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive additives, etc., can solve the problems of non-reusability, low bonding strength, solvent volatilization, etc., and achieve excellent mechanical properties. Performance, high bond strength, mild response effect
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Embodiment 1
[0050] According to the materials and proportions in Table 1, put the selected thiol polymerizable monomers and isocyanate monomers into a beaker, add magnets, and stir on a magnetic stirrer for 30 minutes to prepare transparent and viscous Prepolymer;
[0051]According to the materials and proportions in Table 1, add an accelerator to the prepolymer and stir evenly to obtain a polythiourethane adhesive.
[0052] Table 1. Ratio table of materials used in example 1
[0053]
[0054] The polythiourethane adhesive prepared in embodiment 1 is carried out following bonding strength test:
[0055] test 1
[0056] First, evenly smear the polythiourethane adhesive obtained in Example 1 on the test iron sheet, and the thickness of the smearing is controlled at 100 by a spacer. 5 , the smearing area of the test piece is controlled to be 10mm 10mm, and the quality control is 0.02g. After the iron sheet is smeared and overlapped, it is placed at room temperature and cured for...
Embodiment 2
[0064] According to the materials and proportions in Table 2, put the selected thiol polymerizable monomers and isocyanate monomers into a beaker, add magnets, and stir on a magnetic stirrer for 30 minutes to prepare transparent and viscous Prepolymer;
[0065] According to the materials and proportions in Table 2, add an accelerator to the prepolymer and stir evenly to obtain a polythiourethane adhesive.
[0066] The proportioning table of materials used in table 2. example 2
[0067]
[0068] This embodiment 2 includes the preparation of polythiourethane adhesive six times, and each time the content of the reinforcing group is different, that is, one of A1-A6 is selected in turn, and each time the thiol polymerizable monomer, isocyanate The materials and parts of monomers and accelerators remained unchanged, and finally six different polythiourethane adhesives A1-A6 were prepared.
[0069] Six different polythiourethane adhesives A1-A6 were made into thermal conductivit...
Embodiment 3
[0073] According to the materials and proportions in Table 4, put the selected thiol polymerizable monomers and isocyanate monomers into a beaker, add magnets, and stir on a magnetic stirrer for 30 minutes to prepare transparent and viscous Prepolymer;
[0074] According to the materials and proportions in Table 4, add an accelerator to the prepolymer and stir evenly to obtain a polythiourethane adhesive.
[0075] The proportioning table of materials used in table 4. example 4
[0076]
[0077] Similarly, this embodiment 3 includes the preparation of six polythiourethane adhesives, and one of the reinforcing groups B1-B6 is selected in turn, and the thiol polymerizable monomer, isocyanate monomer and accelerator included each time The materials and the number of parts remained unchanged, and finally six different polythiourethane adhesives B1-B6 were prepared.
[0078] The polythiourethane adhesives B1-B6 were respectively cured to obtain the scanning electron microscope ...
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