| 摘要 |
<p>PURPOSE: A thermocurable epoxy resin is provided to have excellent repair property, impact resistance, and thermal impact by using a specific polythiol hardener with a high molecular weight. CONSTITUTION: A thermocurable epoxy resin comprises an epoxy resin with two or more epoxy groups per molecule; an epoxy resin hardener; and a hardening accelerator. The epoxy resin hardener comprises a high molecular weight polythiol compound indicated in chemical formula 1, or a mixture thereof; and a polythiol compound indicated in chemical formula 3 or a mixture thereof. In chemical formula 1, R is hydrogen, a methyl group, or ethyl group; each of x, y, and z is an integer of 0 or more; and the sum of x, y, and z is 7-25. In chemical formula 3, m is 0-2; n is an integer from 2-4; and the sum of m and n is 4.</p> |
