Multi-layer barrier high-strength composite film and preparation method thereof

• Main Authors: YANG RUIHONG, YONG DAMING, QIAN CHEN, CHENG LONGYU
• Format: Patent
• Language: Chinese; English
• Published: 02.08.2024
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DYES; GENERAL PROCESSES OF COMPOUNDING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PERFORMING OPERATIONS; POLISHES; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS AS ADHESIVES; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

The invention discloses a multi-layer barrier high-strength composite film and a preparation method thereof, belongs to the technical field of composite films, and aims to solve the technical problems that in the prior art, a composite film is relatively weak in barrier property to water vapor and oxygen, and the mechanical property and the chemical corrosion resistance of the composite film are poor. The multi-layer barrier high-strength composite film comprises a supporting layer on the outer layer, a bonding layer on the middle layer and a barrier film layer on the inner layer. The supporting layer is composed of linear ultra-low density polyethylene, linear low density polyethylene, a modified silane coupling agent and the like, and the mechanical performance of the supporting layer is improved through a compound base material and a modifying agent. The bonding layer adopts an epoxy resin adhesive, so that the chemical corrosion resistance is improved. The raw materials of the barrier film are prepared by