The Feasibility Study And Preparation Of Hyperfine Fiber Polyurethane Synthetic Leather

Hyperfine fiber polyurethane synthetic leather is composed by polyamide hyperfine fiber and polyurethane. The crosslinked polyamide hyperfine fiber forms a network skeleton, to support the leather structure effectively, which is similar to the collagen fibers of dermis, while polyurethane distributes around the polyamide fiber, let the synthetic leather are similar to natural leather at some content. Compared to natural leather, the synthetic leather has good moisture permeability as well, and better chemical resistance, waterproof, and anti-mildew, so it is widely applied in car interior, cases, bags, furniture, and many other fields. In this study, we developed a kind of hyperfine fiber polyurethane synthetic leather, while the performance reaches the domestic leading level. A Mean while, we studied the feasibility of hyperfine fiber polyurethane synthetic leather project in state Changshou economic and technological development area. The results showed that:(1) We test out the preparation of a kind of hyperfine fiber polyurethane synthetic leather by wet process, while its air permeability reaches 240L/(m2·s),and moisture permeability reaches 3.3mg/cm2·h, and water absorptivity reaches 17%, and breaking strength reaches 476N/cm,and longitude directional tear strength reaches 75 N, which are superior to trade standard and mainstream product,so that the overall performance reaches the domestic leading performance. However, the uniformity of the leather needs to be further improved.(2) Based on the general market demand in Chongqing and the industrial and utility advantage of Changshou economic and technological development area, which is the largest integrated chemical industrial park in chongqing, we studied the feasibility of hyperfine fiber polyurethane synthetic leather project with 5 million square meters capacity.(3) The project plans to invest 70 million yuan, with the construction capital of 65 million yuan and circulating funds of 5 million yuan. The project may construct in 12 months, and provides 40 million yuan profit when fully run, which has good economic benefits, so the project is feasible.