It is well known that for most PVC products, a certain amount of calcium carbonate is added. As an inexpensive filler, calcium carbonate can be added in small amounts to reduce costs on the one hand, and to improve the modulus, heat resistance and dimensional stability of the product on the other hand, and even some active nano calcium can play an enhancing role. However, with the increase of calcium powder content, the quality of PVC products tends to decrease and the density also increases.The effect of calcium powder content on the density of PVC productsCalcium powder content (KG) …
more >>PVC, whose main ingredient is polyvinyl chloride, is a material made of PVC resin as the main raw material, adding appropriate amount of anti-aging agent, stabilizer, calcium carbonate, CPE, dyeing agent, epoxy soybean oil, modifier, etc., by mixing, calendering, etc. It can be divided into soft material PVC and hard material PVC. PVC edgebanding can be divided into plain PVC edgebanding and woodgrain PVC edgebanding according to its color. Plain color, refers to the red, yellow, blue, green, etc., can be called plain color, that is, the meaning of a single color. The upper layer is PVC materi…
more >>In the process, the particle structure of rigid PVC will change greatly, at lower processing temperatures, due to the role of heat and shear, the particles decompose into primary particles; as the temperature increases, the primary particles are partially crushed; when processing higher, the primary particles can be completely crushed, the crystal melts, the boundary disappears, forming a two-dimensional network, this process is called melting or gelation, generally known as plasticization.The degree of plasticization is a reflection of the degree of crystallization of the product and the degre…
more >>Damage is inevitable in plastic pipes that are used for long periods of time. The type of damage can be divided into brittle damage and ductile damage. Brittle damage is the absence of significant large plastic deformation near or in the broken section of the pipe. The deformation of the pipe before fracture is uniform, resulting in the pipe fracture quickly through the plane perpendicular to the direction of stress, the strain is not large, and the energy required to fracture is not large. In contrast, ductile failure has irreversible plastic deformation accompanied by much larger deformation.…
more >>Abstract:PVC injection molding products such as electronic equipment, electronic components and other fields are developing very rapidly. Usually PVC injection molded parts appearance and physical properties are closely related to its processing, PVC processing aids can improve the processing properties of PVC a class of additives, mainly core-shell acrylate compounds (ACR). , preventing molten PVC from adhering to the equipment. This paper focuses on the advantages and functions of ACR-type processing aids in the field of hard PVC injection molding, and states the key points of processing aid …
more >>