69results about How to "The production process is simple and controllable" patented technology

The invention relates to a method of machining a special passivated stainless steel surface. The method includes a first step of cold rolling raw materials, rolling by adopting roller with 2.0 micrometers to 3.0 micrometers of roughness Ra, controlling cold rolling reduction rate within 5% to 10%, controlling rolling lubrication oil amount within 2000 liters per minute to 4000 liters per minute, a second step of passivating cold rolled materials, conducting annealing and pickling on cold rolled surfaces, controlling furnace temperature of an annealing furnace within 350 DEG C to 550 DEG C, controlling ratio of acid liquid in an acid groove to be 10 grams per liter to 25 grams per liter of hydrofluoric acid (HF) to 80 grams per liter to 200 gram per liter of hydrogen nitrate (HNO3), controlling pickling passivation temperature within 40 DEG C to 60 DEG C, and controlling running speed within 25 meters per minute to 40 meters per minute. Due to the facts that machining is conducted with the help of devices in a stainless steel enterprise and similar products are produced without need of additionally configuring a surface coating production line, production cost is greatly saved. Due to the fact that production technology process is relatively simple and controllable, production efficiency is high. Due to the fact that corrosion resistance of the surfaces which are pickled and passivated is greatly improved, stability is good.

A flame-retardant extrusion-grade PC / ABS composite material, which consists of the following components calculated in parts by weight: 42-74 parts of PC resin, 10-32 parts of ABS resin, 5-8 parts of compatible toughening agent, 5-8 parts of filler, 6-10 parts of flame retardant, 0.1-0.3 parts of anti-dripping agent. Wherein, the PC resin is synthesized by bisphenol A and diphenyl carbonate through transesterification and polycondensation; the ABS is a resin produced by bulk polymerization; the compatibilizer toughening agent is maleic anhydride grafted with organic Silicon methacrylate; the flame retardant is liquid phosphoric acid ester or solid phosphoric acid ester; the anti-dripping agent is polytetrafluoroethylene (PTFE) with large molecular weight and the filler is kaolin. The invention is mainly used in extruded sheet materials for automobiles.

The present invention provides a water-soluble whitening composition formulation, which includes four whitening active ingredients 4-(1-phenylethyl)-1,3-benzenediol, white truffle extract, mulberry root extract and ferulic acid As well as water, poloxamers, polyethylene glycols (PEGs), humectants, skin feel modifiers and preservative systems. The formula can not only make the above four whitening active ingredients, especially the insoluble whitening active ingredient 4-(1-phenylethyl)-1,3-benzenediol, be stably dissolved in the water phase, so as to obtain stable Solubilized compound whitening formula; and it can also play a synergistic effect of the four whitening active ingredients, which can reduce the irritation of the whitening active ingredients in the formula to the skin while whitening the skin. In addition, the present invention also relates to the preparation method and application of the above whitening formula.