Technology Advisory_第2页_Novista Chemicals - The pioneer of Flame retardant

27 2024-2
Contact Us ---------------------------------------------------------------------------------------------------------------Head office: 17th Floor, #2 Building CBD No.4778 Shengli East Street, Weifang City, Shandong P. R. of China.Tel: +86-536-8206760 E-mail: info@novistagroup.com www.novistagroup.com
27 2024-2
About Us ￭ Impact modifier ￭ CPVC Resin & Compound ￭ Processing aids ￭ Lubricants
11 2023-12
The causes and solutions of abnormal phenomena in PVC pipes processing (Manufacturing process of PVC pipe)The following are the causes and corresponding solutions of abnormal phenomena that are likely to occur during the processing of PVC pipes.
7 2023-12
Processing technology of chlorinated polyvinyl chloride (PVC-C) pipes - 2 When setting the process temperature, the curve should be kept as gentle as possible, which is beneficial to the plasticizing quality of the CPVC resin. The sudden rise and fall of the curve is not conducive to the plasticization of the pipe. Generally, a "U" shaped curve is more appropriate.
7 2023-12
Processing technology of chlorinated polyvinyl chloride (PVC-C) pipes - 1 1. ExtruderExtrusion processing of CPVC pipes usually uses parallel or conical twin-screw extruders.
7 2023-12
Formula composition of chlorinated polyvinyl chloride (PVC-C) pipes - 2 2. LubricantsThe role of lubricants and heat stabilizers are equally important.Adding too little, will cause processing difficulties, and even bring considerable damage to the equipment; adding too much, not only affect the quality of plasticization, but also reduce the Vicat softening temperature of the pipe. Therefore, how to balance the dosage of lubricant is the key, but als…
7 2023-12
Formula composition of chlorinated polyvinyl chloride (PVC-C) pipes - 1 Chlorinated polyvinyl chloride resin (hereinafter referred to as CPVC resin) was successfully developed in 1958 by BFGoodrich from USA, which is the product of chlorination of polyvinyl chloride resin (PVC resin).After chlorination of PVC, the chlorine content can be increased from 57% to 64% - 75%, with the increase in chlorine content, the corresponding temperature resistance,…
9 2023-11
The problems often appeared in PVC profiles and the summaries of causes 1. Surface discoloration yellowing:1.1 The formula is not stable enough, stabilizers and lubricants may not be properly matched,
11 2023-2
Why is Calcium Stearate So Significant in PVC? -3 Why Choose NOVISTA for Calcium Stearate?NOVISTA has been one leading exporter of integrated PVC & different polymer additives. We have a strong manufacturing and deep research base in PVC additives, including PVC impact modifiers, processing aids, Lubricants, stabilizers... And we can offer you customized PVC additives and CPVC compounds in high quantity as and when required by…
11 2023-2
Why is Calcium Stearate So Significant in PVC? -2 Calcium Stearate Uses in PVCThe chief uses of Calcium Stearate in PVC include the following:Calcium Stearate curtails friction between PVC grains during refining when used as an internal lubricant.
11 2023-2
Why is Calcium Stearate So Significant in PVC? -1 Calcium stearate is a white waxy powder referred to as calcium soap. It remains insoluble in most solvents and is biologically safe to use. Unlike wax, it does not get greasy even at increased temperatures because of its comparatively higher softening point.Calcium stearate has numerous uses across several industries. Besides being used as an anti-caking additive in cosmetics an…
12 2022-11
PVC injection molding plastic resin -4 Due to the special properties of the PVC material, special PVC injection molding machines should be selected for production. Please note the following points:
12 2022-11
PVC injection molding plastic resin -3 PVC injection molded productThe backpressure should be kept at about 1Mpa, because excessively high backpressure will produce excessive shear force, which will cause the PVC to decompose. At the same time, the multi-stage backpressure control should be adopted in the melting process. In the beginning when the effective length of the screw is long, the backpressure should be kept…
12 2022-11
PVC injection molding plastic resin -2 1.Pay attention to the following points during product design and mold design:Try to avoid sharp corners or abrupt changes in the product, and the thickness should not change too much, so as to prevent the PVC from degrading.
12 2022-11
PVC injection molding plastic resin -1 PVC plastic is a heat-sensitive material that features a poor injection moldability, for which the reason is that an excessively high melt temperature or an excessively long heating time easily causes PVC decomposition. Therefore, the key to molding the PVC products lies in the control of the melting temperature.PVC injection molding plastic resinThe heat sources for melting the…
29 2022-10
What's the Difference Between PVC and CPVC Pipe? -2 Applications of PVC & CPVC:
29 2022-10
What's the Difference Between PVC and CPVC Pipe? -1 What's the Difference Between PVC and CPVC Pipe?PVC vs CPVC
29 2022-10
How Do You Operate and Maintain Plastic Injection Molds? -2 3. When the mold is being used, a normal temperature should be maintained to help extend the service life of the mold.
29 2022-10
How Do You Operate and Maintain Plastic Injection Molds? -1 How Do You Operate and Maintain Plastic Injection Molds?When compared with other tools, the plastic injection mold is more complicated and precise, with higher requirements for operation and maintenance. As a result, throughout the entire production process, their correct use and meticulous mold maintenance are of great significance to maintain the normal production and improve …
18 2022-10
What causes cracking in plastic injection molded parts? -2 (5) It should be noted that amorphous resins, such as AS, ABS and PMMA, are more prone to residual stress than crystalline resins, such as PE and POM.During product ejection, stress is generated due to the high ejection force caused by the small draft angle, rough mold core / cavity. Sometimes, even ejector marks or cracking occurs around the ejector pin. Just look closely at th…