High-gloss polypropylene has become a research hotspot at home and abroad, and domestic product development has achieved good results.

Glossiness is a physical quantity used to evaluate the ability of a material surface to reflect light. Gloss is the surface characteristic of an object. Factors that affect the gloss of polypropylene include spherulite size, dispersed phase, processing conditions, additive formula, etc. At present, domestic research on high-gloss polypropylene mainly focuses on the development of homopolymerization and random copolymerization grades of high-gloss PP. , as well as the optimization of related additive formulas and processing conditions.

Amorphous polymers have high gloss, such as polystyrene (PS), polymethylmethacrylate (PMMA), polycarbonate (PC), etc. Polypropylene (PP) is a semi-crystalline polymer. Due to the uneven crystallization of the polymer, the coexistence of amorphous and crystalline phases easily scatters incident visible light, resulting in a decrease in gloss. In recent years, with the upgrade of market demand and the improvement of modified polypropylene technology, the research and development of high-gloss polypropylene has accelerated.

Polypropylene is one of the most widely consumed types of plastics. It has the advantages of low density, excellent heat resistance, non-toxicity, light weight, and corrosion resistance. It is widely used in automobiles, home appliance casings, electronics, packaging, building materials, furniture and other fields. Wide range of applications. With the development of automobile aesthetics, safety, and lightweight, the market’s requirements for optical properties such as gloss and transparency of polypropylene continue to increase, and the market demand for high-gloss polypropylene is subsequently released.

According to the “2022-2026 Global High-Gloss Polypropylene Industry In-depth Market Research and Key Area Research Report released by the Industrial Research Center , high-gloss polypropylene is a high-end polypropylene product. Currently, relevant domestic research companies include Sinopec Shanghai Refining and Chemical Branch, Sinopec Shanghai Petrochemical, Beijing Research Institute of Chemical Industry, etc. As research continues to deepen, my country’s development of high-gloss polypropylene has achieved good results.

Homopolymerization and random copolymerization of polypropylene are homogeneous systems with high gloss but poor impact properties. In order to meet multi-faceted market demands, high-gloss impact-resistant PP with both impact resistance and high-gloss properties has become the main development direction. , the high-gloss impact PP grades that have been developed include QCG10N of Qilu Petrochemical, M10RG of Zhenhai Refining and Chemical, MG22 and MG15 of Maoming Petrochemical, EP548G of Tianjin Zhongsha, etc.

In terms of modification additives, the commonly used gloss-enhancing nucleating agents for high-gloss polypropylene mainly include α-crystal nucleating agents and β-crystal nucleating agents. Subdivided products include dibenzylidene sorbitol nucleating agents and organic phosphoric acid. Salts, aromatic carboxylic acid metal compounds, aliphatic carboxylic acid metal compounds, etc.

Industry analysts said that polypropylene is a semi-crystalline polymer with low gloss. In recent years, with the upgrading of downstream market demand, , high-gloss polypropylene has become a research hotspot at home and abroad. High-gloss polypropylene has good application prospects in automotive accessories, home appliance casings, packaging, building materials and other fields. As research continues to deepen, more brands of high-gloss polypropylene will enter the market, and the industry has great potential for future development.