4results about How to "High extension" patented technology

This tape (10) has a substrate layer (12) and a pressure-sensitive adhesive layer (11) on one surface of the substrate layer (12), and has an elongation at break of 100% or more and an elastic modulus of 2 GPa or less. The tape (10) has, after having heated at 230°C for 80 seconds, an elongation at break of 100% or more and the elastic modulus of 2 GPa or less.

The application discloses a 1300MPa or above grade cold-rolled steel plate with high elongation and high hole expanding performance, which contains Fe and inevitable impurity elements, and also contains the following chemical elements with mass percentage as follows: C: 0.15%-0.30%, Si: 0.3%-0.5%, Mn: 1.8%-2.5%, Al: 0.01%-0.03%, B: 0.001-0.003%, Ti: 0-0.05%, and the mass percentage of C and Mn satisfies C+Mn / 6>=0.52; wherein the microstructure of the cold-rolled steel plate has nano precipitates with an average diameter less than 30nm. In addition, the application also discloses a manufacturing method of the above-mentioned 1300MPa or above grade cold-rolled steel plate, which comprises the following steps: (1) smelting and casting; (2) hot rolling; (3) hot coil heat preservation cover annealing; (4) cold rolling; (5) annealing; (6) isothermal heat preservation treatment; (7) cooling; (8) flattening.

The invention discloses 1180MPa-grade super bainite steel for an automobile and a preparation method of the 1180MPa-grade super bainite steel, and belongs to the technical field of cold-rolled strip production. The super bainite steel comprises the following chemical components in percentage by mass: 0.17%-0.20% of C, 1.0%-1.5% of Si, 1.80%-2.30% of Mn, less than or equal to 0.008% of P, less than or equal to 0.005% of S, 0.01%-0.07% of Als, 0.15%-0.30% of Cr, 0.04%-0.08% of V, 0.04%-0.08% of Ti, less than or equal to 0.0045% of N and the balance of Fe and impurities, and Ceq = C + Si / 30 + Mn / 20 + 2P + 4S < = 0.41. The preparation method comprises the steps of smelting, continuous casting, hot rolling, pickling cold rolling and continuous annealing. Through alloy component design and process collaborative optimization, the prepared super bainite steel has high strength, high plasticity and high reaming performance.

The invention discloses a polyolefin base material paint surface invisible car cover which comprises a release layer, a pressure-sensitive adhesive layer, a first polyolefin modified layer, a thermoplastic plastic layer, a second polyolefin modified layer, a bottom coating, a self-repairing layer and a PET film for protection which are sequentially arranged from inside to outside. The release layer is any one of a PET release film and release paper; the thermoplastic plastic layer is any one of metallocene low-density polyethylene, polypropylene random copolymer and blends blended with other polyolefin. The coating has the characteristics of low price, durability, low use cost, high strength, high transparency, high extensibility, high weather resistance and good film pasting and self-repairing performance, and can be well applied to the use environment of the paint surface protective film.