PVC (Polyvinyl Chloride) corrosion-resistant sound-absorbing silencing plate

The invention discloses a PVC (Polyvinyl Chloride) corrosion-resistant sound-absorbing silencing plate. The plate comprises a framework (1), an upper layer plate (2), a lower layer plate (3) and a sound absorbing material (4), wherein the framework (1) is a C-shaped framework which is formed by welding or hot bending PVC; the C-shaped framework comprises an upper wing plate (11), a lower wing plate (12) and a web plate (13); the web plate (13) is perpendicular to the upper wing plate (11) and the lower wing plate (12) respectively; the upper wing plate (11), the lower wing plate (12) and the web plate (13) form a C-shaped edge; the C-shaped edge defines a square or oblong; the C-shaped framework is integrally square or oblong; N small squares or oblongs are arranged in the C-shaped framework, and N is an integer which is greater than zero. The plate is light in weight, is suitable for the fields with requirements on weight of the equipment such as aviation and ships, has high corrosion resistance capacity, is suitable for easily corroded environments such as warm and wet areas, and is low in production and mounting cost.