Fiberglass reinforced waterproof membrane and its preparation method

By introducing a composite process of fiberglass cloth and specific polymer materials into waterproof membranes, the problems of insufficient mechanical properties and aging resistance of polyethylene waterproof membranes have been solved, and the high strength, waterproofness and durability have been improved.

CN119459077BActive Publication Date: 2026-05-26FUANSTE NEW MATERIALS R&D (HANGZHOU) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FUANSTE NEW MATERIALS R&D (HANGZHOU) CO LTD
Filing Date
2024-11-14
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing polyethylene waterproof membranes have poor mechanical properties and aging resistance. They are prone to embrittlement and poor waterproofing performance when exposed to sunlight for a long time.

Method used

A polymer waterproof layer composed of a reinforcing protective layer made of fiberglass cloth, low-density polyethylene, epoxy resin-modified acrylic resin, and fluorinated benzoxazine-modified polyurethane is used to prepare a fiberglass-reinforced waterproof membrane through a composite process, which enhances the mechanical properties and aging resistance of the waterproof membrane.

Benefits of technology

It improves the mechanical properties and aging resistance of waterproof membranes, enhances waterproofing effect, and has good tensile strength, waterproof performance and thermal insulation capacity, while reducing energy consumption.

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Patent Text Reader

Abstract

This invention relates to the field of waterproof materials technology and discloses a fiberglass reinforced waterproof membrane and its preparation method. The invention employs a coating process to coat both sides of a high-density polyethylene (HDPE) foam film with a polymer waterproof layer. Then, a reinforcing protective layer and the HDPE foam film coated with the polymer waterproof layer are laminated together. Finally, the mixture is dried, cured, and cooled to obtain the fiberglass reinforced waterproof membrane. The fiberglass reinforced waterproof membrane consists of, from top to bottom, a reinforcing protective layer, a polymer waterproof layer, an HDPE foam film, and another polymer waterproof layer. The reinforcing protective layer is made of fiberglass cloth coated with polyvinyl fluoride (PVC). The polymer waterproof layer is a blend of low-density polyethylene, epoxy-modified acrylic resin, and fluorinated benzoxazine-modified polyurethane. The fiberglass reinforced waterproof membrane prepared by this invention possesses excellent mechanical properties, aging resistance, and waterproofing effect.
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