Composite sound insulation and shock absorption plate and preparation method and application thereof

Through the design of a three-layer composite structure, the synergistic effect of polyurethane foam board, cement-based fabric and EPP foam board solves the problem that existing materials cannot simultaneously achieve sound insulation, vibration reduction and heat preservation, thus improving the overall performance.

CN122354043APending Publication Date: 2026-07-10HEBEI HONGBO ACOUSTIC TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202610650958.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-12
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing single materials are difficult to simultaneously possess good sound insulation, vibration reduction, and thermal insulation properties, resulting in poor performance in building and industrial noise control.

Method used

The three-layer composite structure includes a polyurethane foam board as the upper sound insulation layer, a cement-based fabric as the middle matrix layer, and an EPP foam board as the lower shock-absorbing layer. These layers are bonded together with adhesives to form a synergistic effect and optimize the thickness and density of each layer.

Benefits of technology

This achieves a comprehensive improvement in the sound insulation, vibration reduction, and thermal insulation performance of the board, significantly enhancing the sound insulation effect while maintaining good thermal insulation performance.

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Abstract

The invention discloses a composite sound insulation and shock absorption plate as well as a preparation method and application thereof, and belongs to the field of building and industrial noise control materials. The plate comprises an upper sound insulation layer, a middle base body layer and a lower shock absorption layer which are sequentially stacked from top to bottom and bonded into a whole through a water-based adhesive. The upper sound insulation layer is a polyurethane foaming plate with the density of 30-60 kg / m < 3 >, the middle base body layer is cement base cloth, fiber cloth, non-woven cloth, a plastic film and an aluminum laminated film, and the lower shock absorption layer is an EPP foaming plate with the density of 15-25 kg / m < 3 >. According to the board, the three layers of materials are compounded, sound insulation and heat preservation of polyurethane, enhanced sound insulation of the middle base body layer and damping and buffering characteristics of EPP are integrated, and the board has good sound insulation, damping and heat preservation performance and is suitable for building and industrial occasions with requirements for comprehensive performance.
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