Preparation method of soft-shell hard-core adhesive and application of soft-shell hard-core adhesive in preparation of aerogel thermal insulation material

• Main Authors: DING KAI, FAN YAN, XU YINGFEI
• Format: Patent
• Language: Chinese; English
• Published: 10.05.2024
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; DYES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; PAINTS; POLISHES; USE OF MATERIALS AS ADHESIVES

The invention relates to the field of thermal insulation materials, and discloses a preparation method of a soft-shell hard-core adhesive and application of the soft-shell hard-core adhesive in preparation of an aerogel thermal insulation material. The preparation method of the soft-shell hard-core adhesive comprises the following steps: (1) preparing NaOH-loaded silicon dioxide aerogel particles; and (2) dispersing in a methanol solution of polyvinyl acetate, and carrying out alcoholysis reaction to obtain the soft-shell hard-core adhesive. The soft-shell hard-core adhesive with the silicon dioxide aerogel particles as the hard core and the polyvinyl alcohol coating layer as the soft shell can be prepared by the method disclosed by the invention. After the soft-shell hard-core adhesive and common aerogel particles are mixed and hot-pressed, the adhesive does not wrap the surfaces of the common aerogel particles in a large area, a large number of gaps are still reserved between the soft-shell hard-core adhesi