Dope Dyed PBT DTY Yarn Modification Technology
Dope Dyed PBT DTY Yarn modification technology
1) Dope Dyed PBT DTY Yarn fiber reinforced. Long fiber reinforced thermoplastics (UCRT) is a new type of lightweight high-strength engineering structural materials, because of its light weight, low cost, easy recycling and recycling, the rapid development of applications in the car. With natural fibers such as linen, sisal reinforced plastic manufacturing body parts, in the automotive industry has been recognized. On the one hand is due to natural fiber is environmentally friendly materials, on the other hand plant fiber 40% lighter than glass, reduce vehicle weight can reduce fuel consumption. With flax reinforced PP production of the body floor, the tensile strength of materials than steel to high, not less than the glass fiber reinforced materials, parts easier to recover. British GKN technology company with fiber reinforced plastic manufacturing shaft, weight reduction 50% -60%, torsional than steel 1.0 times larger, 1.5 times the bending stiffness. Plastic springs can significantly reduce weight. The leaf spring made of carbon fiber reinforced plastic (CFRP) is 14kg, reducing the weight by 76%. In the United States, Japan, Europe have been using leaf spring, cylindrical spiral spring to achieve a fiber reinforced plastic, in addition to a significant anti-vibration and noise reduction effect, but also to achieve the purpose of lightweight.
(2) Dope Dyed PBT DTY Yarn toughening technology. The stiffness (including strength) and toughness of the polymer material are the two most important performance indicators that are mutually constrained. Therefore, the enhancement of stiffness while strengthening toughening research has been a difficult problem in polymer materials. Institute of Chemistry, Chinese Academy of Sciences Institute of Chemistry, polymer blending filling toughening a new way, the results in the solution of polymer materials to enhance the toughening of the scientific problems to obtain an important breakthrough in the country for the first time successfully prepared ultra-high toughness polyolefin engineering plastics, Large varieties of general plastic upgrade for engineering plastics and engineering plastics to further improve the performance of a new way. Ministry of Education of high gravity engineering technology research center successfully developed the national "863" project - "nano CaCO3 plastic toughening masterbatch and its preparation technology." This kind of masterbatch can make PVC toughening modification, mainly used in PVC doors and windows profile production, can also be used in PVC pipe, sheet and other hard products production. From the development trend, PVC plastic doors and windows have a comprehensive replacement of steel windows and wooden doors and windows of the trend. At present, domestic PVC doors and windows profile annual production capacity of 100 million t, and was rising trend. The use of nano-CaCO3 plastic toughening masterbatch production PVC doors and windows profile, not only can improve product performance, and the cost per ton of profiles can be reduced by more than 100 yuan. At the same time, its application areas will also PP, ABS and other plastic materials in the expansion. The use of nano-CaCO3 on the toughening of PVC is developed in recent years, non-elastomer toughened plastic technology (inorganic rigid particles toughened plastic technology), the domestic is still in the research stage. Direct addition of nano-CaCO3 will have two major problems: First, nanoparticles will coalescence in the plastic matrix, so that uneven dispersion, affecting the toughening effect; the second is due to nano-CaCO3 particles tiny, easy to produce dust, affecting the environment. The successful development of nano-CaCO3 plastic toughening masterbatch and its preparation technology has effectively solved the two problems in the same research field at home and abroad.
(3) Dope Dyed PBT DTY Yarn filled with modified (powder filled). Plastic filling has been put into the market since the early 1980s, because of its low price, excellent product performance and improved some physical properties of plastic products, can replace synthetic resin, and the production process is simple, less investment, with Significant economic and social benefits. The surface-modified inorganic powder material surface modifier has received a certain effect from stearic acid to coupling agent, and the coupling agent is silane, titanate, aluminate, borate, phosphate, etc. Varieties have emerged. Talc is often used to fill polypropylene. Talc has a flaky structure of sheet structure, so the finer granular talc can be used as a reinforcing filler for polypropylene. In the polypropylene modified system, adding ultrafine talc powder masterbatch not only can significantly improve the rigidity of the polypropylene products, surface hardness, heat creep resistance, electrical insulation, dimensional stability, but also can improve the polypropylene The impact strength. The addition of a small amount of talc in polypropylene can also play the role of nucleating agent to improve the crystallinity of polypropylene, so that the mechanical properties of polypropylene can be improved, due to improve the crystallinity of polypropylene, , Also increased the transparency of polypropylene. The polypropylene composites filled with 20% and 40% ultrafine talc can significantly improve the rigidity of polypropylene and the creep resistance at high temperatures, both at room temperature and at elevated temperatures. For polyethylene blown film, filled with ultrafine talc powder masterbatch than other fillers, easy to shape, good process.