7results 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 invention provides 301TK stainless steel and application thereof. The 301TK stainless steel comprises the following components in percentage by weight: 0.08%-0.11% of C; 0.5%-0.7% of Si; 1.7% to 1.9% of Mn; p is less than or equal to 0.035%; s < = 0.004%; cr: 17.2% to 17.8%; 6.5%-6.9% of Ni; 0.6% to 0.9% of Cu; 0.03%-0.06% of N, and the balance Fe and other inevitable impurity elements. MD30: 5 to 20 DEG C. The invention further provides a production method and application of the 301TK stainless steel. The 301TK stainless steel has high extensibility and high corrosion resistance, can generate high strength after stamping deformation, and meets the technical performance requirements of high-end water tanks.

The present invention belongs to the technical field of light alloys and relates to a process for producing high-extension hose foil from 8011 aluminum alloy billets, comprising: annealing the 8011 aluminum alloy billets at 120-150°C for 18-20 hours before rolling, and naturally cooling them to room temperature; allocating the amount of pressing per pass according to the billet thickness, using 80# mineral oil as the rolling base oil, which contains 65% saturated C 12 Alkanes, 35% C 13 ‑C 14 A saturated alkane mixture is added with methyl laurate and lauryl alcohol and 0.15±0.02% lauric acid in a mass percentage of 7-10%; it is cut by a circular knife, and the moving knife cutting speed is 6-8% of the cutting and coiling speed; the annealing process uses a high temperature short-time performance and a segmented degreasing process, and the degreasing sections are arranged on both sides of the high temperature performance section. The present invention first performs annealing pretreatment on the blank to improve the initial tensile strength and elongation of the blank; the slitting process uses a disc knife combined with a moving knife cutting technology to avoid cracking and breaking of the product, and the high temperature short-time performance and segmented degreasing process in the annealing process improve the high elongation performance of the product.

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 provides a composite membrane, a self-adhesive polymer modified asphalt waterproof coiled material and a preparation method, and relates to the technical field of membrane materials, the composite membrane comprises a first membrane layer, a second membrane layer and a third membrane layer; the first film layer comprises a polyolefin film, a polyester film, a modified polyolefin film or a modified polyester film; the second membrane layer comprises a fiber membrane impregnated with impregnation liquid; the third film layer comprises a modified polyolefin film or a modified polyester film; the impregnation liquid comprises asphalt and silica gel. The coiled material prepared by adopting the composite film has the advantages that the self-adhesive asphalt layer is flat, the overlapping edge is dense and free of water channeling, and the coiled material has the characteristics of tear resistance, excellent dimensional stability, softness and good construction fitness. And the requirements of waterproof engineering of maintenance and newly-built roofs can be met.

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.