China's total export value ranked second in the world in the six decades
The terminal amino group of Nylon 6 slice refers to the content of -NH3 group in the macromolecular chain. The number-average molecular weight of the slice can be calculated by the content of the terminal amino group, and the method of blocking the terminal group of the polymer, the antioxidant capacity and the speed of dyeing can be speculated.
The amino-terminal content of nylon 6 slices should be determined according to the requirements of customers. Only a few companies such as Haiyang Technology are able to provide customized services in the market. More importantly, the amino-terminal content of Haiyang Qiuxue nylon 6 slices The content is stable, which is critical for the uniformity of spinning and dyeing of silk sources.
Bright Nylon 6 Chips,Virgin R.V2.45 Nylon 6 Pellets,Bright R.V2.45 Nylon 6 Pellets,Polyamide6 Pellets Exporter HAIYANG TECHNOLOGY CO.,LTD , https://www.hypa6.com
In the early years after the founding of the People's Republic of China, more than 80% of China's export commodities were primary products, while imports were mainly production equipment such as machinery and equipment. After the reform and opening up, the structure of import and export commodities has undergone fundamental changes. The proportion of industrial finished goods exports has gradually reached more than 90%, and fundamentally reversed the large number of primary products for export in exchange for passive imports of industrial products. Throughout the 1980s, the share of exports and imports of industrial manufactured goods increased significantly. In the 1990s, electromechanical products became the main commodity for import and export. Since the accession to the WTO in 2001, the composition of import and export products has further changed, and the export and import of high-tech products with the IT industry as its core have grown at a rapid rate.
The amino group content of Nylon 6 Chips is generally controlled at about 40. The higher the content, the higher the dyeing rate of the spun Nylon 6 Yarn, the faster the dyeing, and the deeper the dyeing color. The amino acid content of the nylon 6 slices used for spinning should be controlled at a high level, but too high is not good for the uniformity of dyeing. It is more beneficial to control the low content of terminal amino groups in shallow colors.
