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Key Technology of Modification of Engineering Plastics

Time : 2023-07-13 Hits : 8

In industrial manufacturing, engineering plastics play a crucial role. Engineering plastics do, however, have a number of drawbacks that prevent further advancement in the field of applications. Relevant firms must adjust engineering plastics to conform to the shifting trends of the current market if engineering plastics are to keep their competitive advantages in an increasingly competitive market. The development of new engineering plastic goods that satisfy consumers' genuine demands benefits from thorough study on the major technological concerns surrounding engineering plastic modification.

Methods for polymer modification 

The state of industrial manufacturing modifications to engineering plastics Engineering plastics, such as polybutylene terephthalate (PBT), polyamide (PA), polycarbonate (PC), polyoxymethylene (POM), polyphenylene oxide (PPO), etc., are primarily defined as plastics that may be employed as structural materials.

Engineering plastics are frequently utilized in industrial manufacturing and have many great qualities. Acids, alkalis, and organic solvents do not easily damage engineering plastics due to their high chemical stability. Engineering plastics have evident shock- and sound-absorbing properties that can, to some extent, lessen the noise produced by high-speed rotating machinery and improve the working environment for concerned personnel. In actual industrial manufacturing, the development of an engineering plastic is rather constrained in terms of applicability.

Engineering plastics must be altered in order to change this situation. Engineering modification primarily refers to the loading of suitable modifiers into the changed engineering plastics in accordance with actual demands by way of a specific method, in order to generate new engineering plastic products with new structural properties. The major method for creating new engineering plastic goods is to modify existing engineering plastics, a topic that academic researchers are focusing on more and more.From a present perspective, the market demand for engineering plastic goods has been rising year after year, indicating that consumers are now fully aware of the engineering plastics modification technology. Engineering plastics modification technology is developing in a way that not only encourages the thorough development of its application fields but also expands those sectors.

Important technical issues with engineering plastics alteration

Putting Surface Treatment Issues to Rest The primary fillers for plastics are inorganic powder ingredients. The inorganic powder material's surface particles are typically activated first during the filling process, changing their initial hydrophilicity to lipophilicity and therefore converting them to organic particles. Scientific experts have discovered that surface treatment technology and the treatment impact of filler particles have a specific reference value for the modification of engineering plastics via ongoing study.

recycling composite plastics that have seen better days The amount of garbage and outdated composite plastics imported into my nation is rising quickly each year along with the social economy's rapid development, which in some ways aids in the expansion of the plastics sector. We should keep researching and actively developing innovative procedures to enable the direct utilization of waste composite plastics without separation in order to achieve the recycling of waste composite plastics.

Quality problems Mineral fillers are included into engineering plastic materials of the same grade, although their volume is much smaller than that of engineering plastics. It is clear that the filler material particles will have some influence on the production of engineering plastic goods. If the production of engineering plastic goods is decreased, certain unneeded negative impacts will surface while business economic advantages increase.

In order to determine the influence of both good and negative impacts, relevant firms should measure them prior to employing filler materials.

Technique for designing plastics modification

Blend adjustment

Engineering plastics are modified primarily by mixing different engineering plastics, which significantly alters the characteristics of the combined engineering plastics and ultimately results in the formation of a new polymer system. According to Table 1, the five basic blending modification methods for engineering plastics are block copolymerization, mechanical blending, graft copolymerization , reactive blending, and compatibilization technology.

Blend modification

The most common method for creating polymer alloys is mechanical mixing. To combine different technical polymers, twin-screw extruders are primarily used. This system has unfixable shortcomings while being straightforward and practical. The mechanical blending method is improved by the compatibilization technology, and the polymer alloy created by mixing maintains the original performance.

Polymers actually don't get along with one another. Therefore, engineering plastics processing businesses should add the proper amount of compatibilizers to engineering plastics in order to successfully block the separation of blended components while making polymer alloys. plastics' ability to coexist. The manufacturing toughness requirements for the reactive mixing process are greater.

Under the conditions of a chemical reaction, the original polymers in engineering plastics will generate graft copolymers or block copolymers, and cross-linking reactions will also take place. These two processes—block copolymerization and graft copolymerization—can accurately represent the mechanical characteristics of the alloy and are the most widely used procedures for producing chemical alloys.

Block copolymerization and graft copolymerization, on the other hand, have very high costs and are not generally accepted by society, which makes progress extremely sluggish.

Maleic Anhydride Modified Polypropylene

Filling alterations

Engineering plastics are modified to add the right amount of filling materials, which is the major purpose of the filling modification. By using this technique, engineered plastic goods perform better and raw material costs are decreased. According to current thinking, there are two categories of filling modification techniques for engineering plastics:

The one-step approach is first. Engineering plastics processing businesses should combine the filler and resin materials in a specific ratio and stir them until they are thoroughly combined. Then, they should rationally apply the corresponding processing technology to the molding processing equipment, skipping the intermediary steps and completing the material mixing immediately.

the two-step approach, second. Engineering processing businesses should combine resin and filler components in a certain proportion, knead engineering plastics using processing technology, and then turn the kneaded ingredients into engineering plastic products using molding processing equipment (see Table 2).

Filling modification

The mechanical and physical qualities of engineering plastic goods may be efficiently improved by filling alteration, and to some extent, the added value can also be raised. Processing businesses can select sheet or fiber filler materials to fill and change the resin in order to enhance the pertinent mechanical characteristics, such as elongation, impact, elastic modulus, etc.

Processing businesses might select powdered filler components to increase the engineering plastics' toughness and stiffness. Filling and altering engineering plastics can lower manufacturing costs for businesses, which benefits their sustainable growth. This is predicated on the idea that doing so won't harm the performance of engineering plastics. Its cost is far cheaper than that of synthetic resins, whether it be an organic filler or an inorganic filler. Fillers can thus be used in place of synthetic resins to save money.


The filling surface treatment, recycling of used composite polymers, and quality issues are the modification's main technological challenges. To satisfy people's actual demands for the performance of engineering plastic materials, blending and filling modifications are made to engineering plastics.


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