Price of Baoshan PVC foam board
Paint process:
Scope of application: It is applicable to the surface spraying paint treatment of PVC foam board products; Such as PVC bathroom cabinet painting process, PVC bathroom cabinet painting process, etc.
Main ingredients: cellulose resin, Wushu polymer, etc.
Environmental protection standards: meet phthalate EN71-3：1994+AL2000+AC2002、REACH。
PVC foam board paint: white, red, varnish, green, sky blue, pearlescent paint black, yellow, silver glitter paint, etc.
Characteristics: PVC foam board paint series, which is easy to construct for PVC large boards, has strong adhesion, high hardness, good sun resistance, and has no serrated cracks in cutting and drilling of PVC plates after painting. Its performance is easy to spray, low cost, and single component conforms to ROHS environmental protection. It has a good decorative and protective function for the surface of paint coated PVC bathroom cabinets and PVC bathroom cabinets.
Definition of foam material: foam plastic, also known as foam plastic, is a composite material with plastic as the basic component and a large number of bubbles, which can be said to be filled with gas.
Classification of foam sheets: according to different foaming ratios, they can be divided into high foaming and low foaming, and according to the hardness of the foam body texture, they can be divided into hard, semi hard and soft foam plastics. According to the cell structure, it can be divided into closed cell foams and open cell foams. The common PVC foam sheet belongs to rigid closed cell low foam sheet.
Key factors for evaluating the quality of foamed sheets: For foamed materials, the size and uniformity of foam cells are the key factors affecting the quality of sheets. For low power foamed sheet, the foam cell is small and uniform, and the foamed sheet has good toughness, high strength and good surface quality. In terms of reducing the density of foamed sheet, it is possible to further reduce the density only when the bubbles are small and uniform, and it is difficult to further reduce the density when the bubbles are large and dispersed.
The role of processing aids in PVC foam sheets: ACR processing aids can promote the melting of PVC, improve the surface finish, improve the elasticity of the melt, and enhance the elongation and strength of the melt. It is conducive to covering bubbles and preventing bubble collapse. The molecular weight and amount of foaming regulator have a great impact on the density of the foam sheet: with the increase of molecular weight, the strength of PVC melt increases, and the density of the foam sheet can be lower, which has the same effect as the increase of the amount of regulator. However, this effect does not have a linear relationship. Continuing to increase the molecular weight or increase the dosage will not significantly reduce the density, and the density will tend to be constant.
Common problems: problems encountered during the extrusion of PVC foam sheets can be basically classified into four categories: first, stability problems; The second is the melt strength; The third is lubrication; Fourth, decentralization. These four types of problems, especially these types of problems, will restrict each other and cross affect each other. Sometimes it is difficult to distinguish them immediately from the superficial phenomenon. Only by observing and analyzing them, can we find the root cause of the problem and fundamentally solve it.
