Temperature-resistant laminated steel pre-coating film adhesive and preparation method thereof

• Main Authors: ZHENG TAO, HE CHANGSHENG
• Format: Patent
• Language: Chinese; English
• Published: 15.03.2017
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DYES; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS AS ADHESIVES

The invention discloses a temperature-resistant laminated steel pre-coating film adhesive and a preparation method thereof. The adhesive is formed by mixing a main agent and a curing agent in a mass ratio of (40-60) to1, wherein the main agent is an ethyl acetate solution containing polyester resin, epoxy resin, amino resin and a silane coupling agent; the rotary viscosity of the main agent at the temperature of 25 DEG C is 200-400mPa s, and the solid content is 25-35%; the hydroxyl value of the polyester resin contained in the main agent is 6-11mg KOH/g, and the softening point is 90-110 DEG C; the curing agent is an ethyl acetate solution containing an isocyanate prepolymer, the rotary viscosity of the curing agent at the temperature of 25 DEG C is 1000-3000mPa s, and the solid content is 73-77%. The wound pre-coating film avoids after-tack, a laminated steel product adopting the pre-coating film achieves the effect of no edge warping in case of cup drawing for 9mm, does not delaminate after 10J impact, res