Where through physical, chemical or physical and chemical combination of methods to promote the performance of plastic materials to improve, or change, or give the resin material new functions, can be called plastic modification. So the plastic sheet itself can be called modified material. Of course, what we call modified plastic sheet, is to make some of the properties of general-purpose plastic sheet to achieve the indicators of engineering plastics, high performance, multifunctionality and practicality.
1. How to make plastic sheet modified?
Most of the modification of plastic sheet is achieved through the design of the formula. Formulation is based on the plastic matrix resin as the main component, through the selection of additives, matching and dosage adjustment to achieve the coordination of product performance. Plastic formulations must take into account the type of application object, processing mode, product characteristics and component coordination and other factors. By mixing these formulas, heating them for processing and extruding the sheet, this completes our modified plastic sheet.
2. What are the benefits of modification?
(1) Reduce the cost of products, improve economic efficiency
Nowadays, our market-oriented business policy is to ensure the quality of the premise, while taking into account the cost requirements of customers, in order to solve the various technical, specification and quality requirements put forward by the customer on the basis of a reasonable price for the two sides to reach a mutually beneficial win-win situation.
Plastic formulation design can reduce the cost of resin and products under the premise of ensuring performance, which is an effective way to improve economic efficiency. In terms of pvc sheet products, add talc or calcium carbonate filler modification, and with the appropriate amount of other additives, product quality both to meet national standards and reduce costs, two birds with one stone.
Plastic raw material prices are high and low, expensive engineering plastics can be blended with lower-priced general-purpose resins, without affecting the use of requirements while reducing product costs.
Nowadays, our market-oriented business policy is to ensure the quality of the premise, while taking into account the cost requirements of customers, in order to solve the various technical, specification and quality requirements put forward by the customer on the basis of a reasonable price for the two sides to reach a mutually beneficial win-win situation.
Plastic formulation design can reduce the cost of resin and products under the premise of ensuring performance, which is an effective way to improve economic efficiency. In terms of pvc sheet products, add talc or calcium carbonate filler modification, and with the appropriate amount of other additives, product quality both to meet national standards and reduce costs, two birds with one stone.
Plastic raw material prices are high and low, expensive engineering plastics can be blended with lower-priced general-purpose resins, without affecting the use of requirements while reducing product costs.
(2) Functionalisation and high performance of plastics
Plastic sheet through the modification, both to improve the original comprehensive performance, so that the material high performance, such as improving mechanical properties, heat resistance, etc., but also to give the material a new function. Such as in the ordinary resin mixed with flame retardant resin produced plastic sheet, can improve the flame retardancy; in general resin mixed with highly absorbent or conductive polymers, can improve its anti-static properties.
Polystyrene, ABS plastic sheet is easy to burn, and when burning produces a lot of smoke hazardous to people's health. Therefore, the electrical and electronic industry, close to the high temperature parts of the PS, ABS products should be both flame retardant and smoke. The addition of flame retardant and smoke suppressant in the formula can achieve this purpose. Volume resistivity of plastics are very large, so plastic products are easy to generate static electricity in the process of use, often bring a lot of negative impacts, such as static electricity accumulation and electromagnetic wave interference. Adding antistatic agent in plastic modification formula can solve the static phenomenon of products.
Plastic sheet through the modification, both to improve the original comprehensive performance, so that the material high performance, such as improving mechanical properties, heat resistance, etc., but also to give the material a new function. Such as in the ordinary resin mixed with flame retardant resin produced plastic sheet, can improve the flame retardancy; in general resin mixed with highly absorbent or conductive polymers, can improve its anti-static properties.
Polystyrene, ABS plastic sheet is easy to burn, and when burning produces a lot of smoke hazardous to people's health. Therefore, the electrical and electronic industry, close to the high temperature parts of the PS, ABS products should be both flame retardant and smoke. The addition of flame retardant and smoke suppressant in the formula can achieve this purpose. Volume resistivity of plastics are very large, so plastic products are easy to generate static electricity in the process of use, often bring a lot of negative impacts, such as static electricity accumulation and electromagnetic wave interference. Adding antistatic agent in plastic modification formula can solve the static phenomenon of products.
(3) Increase the variety of plastics, integrated performance of the components
The performance of two or more polymer components to complement each other, to eliminate the weakness of the performance of a single polymer component. Choose the best to get rid of the worst, to obtain a more ideal comprehensive performance of the new material, or can adapt to the needs of different applications of the product.
PVC's shortcomings are poor thermal stability, easy to decompose when heated, blended with ABS, can be integrated with the advantages of both, to make up for the shortcomings of the products with high impact strength, good thermal stability, excellent processing performance and a certain degree of flame retardancy and other advantages.
(4) Improve material processing performance
In various types of resins, some resins have very low melt flow rate, resulting in difficult moulding and processing, and need to improve its processing performance with better fluidity of the resin or additives. Such as ABS and PC blending, can improve the processing performance and rheological properties of high viscosity resin.
There are also some thermally unstable plastics that are basically difficult to process without formulation, such as PVC and PLA. The most typical is PVC sheet, most need to add heat stabilizers, plasticizers, in order to smooth processing and shaping, through a certain formulation design, in order to prepare a variety of soft and hard products to adapt to different applications.
The performance of two or more polymer components to complement each other, to eliminate the weakness of the performance of a single polymer component. Choose the best to get rid of the worst, to obtain a more ideal comprehensive performance of the new material, or can adapt to the needs of different applications of the product.
PVC's shortcomings are poor thermal stability, easy to decompose when heated, blended with ABS, can be integrated with the advantages of both, to make up for the shortcomings of the products with high impact strength, good thermal stability, excellent processing performance and a certain degree of flame retardancy and other advantages.
(4) Improve material processing performance
In various types of resins, some resins have very low melt flow rate, resulting in difficult moulding and processing, and need to improve its processing performance with better fluidity of the resin or additives. Such as ABS and PC blending, can improve the processing performance and rheological properties of high viscosity resin.
There are also some thermally unstable plastics that are basically difficult to process without formulation, such as PVC and PLA. The most typical is PVC sheet, most need to add heat stabilizers, plasticizers, in order to smooth processing and shaping, through a certain formulation design, in order to prepare a variety of soft and hard products to adapt to different applications.