摘要:
This present invention discloses a modified thermoplastic polyurethane (TPU) rolling film and relates to a preparation method thereof. The modified thermoplastic polyurethane (TPU) rolling film comprises: 100 parts by weight of TPU resin, 3 to 8 parts by weight of Thermoplastic polyolefin (TPO) resin, 5 to 10 parts by weight of Thermoplastic Silicone Vulcanizate (TPSiV) resin, 5 to 15 parts by weight of TPU color masterbatch, 0.5 to 1.5 parts by weight of antioxidant, 0.5 to 1.5 parts by weight of light stabilizer, 10 to 15 parts by weight of flame retardant, and 0.03 to 0.1 parts by weight of compound lubricant. This kind of rolling film has a uniform thickness and high surface gloss, and is yellowing resistant, abrasion resistant, flame retardant, and low-temperature resistant.
摘要:
A utility glove comprising a three dimensional molded portion formed of an elastomeric material molded onto a fabric material, wherein the molded portion has a thickness of from about 0.8 to about 10.8 mm with the elastomeric material including two or more areas of differing thicknesses within the range of from about 0.4 to about 10.0 mm. The molded portion of the utility glove has a concave palm, with the middle of the palm being set in from the edges to form a concave configuration.The utility glove is manufactured by placing a glove blank comprising a fabric material over a first mold part in the form of at least a portion of a hand and bringing at least one second mold part into molding engagement with the first mold part to create a cavity with the glove blank on the first mold part. The elastomeric material is then injected into the cavity to form a molded portion, wherein the elastomeric material is injected on the side of the fabric material opposite the first mold part.
摘要:
The present invention relates to a polyimide precursor comprising a repeating unit represented by the following chemical formula (1): wherein A is a tetravalent group having at least one aliphatic six membered ring and no aromatic ring in the chemical structure, and B is a divalent group having at least one amide bond and an aromatic ring in the chemical structure; or A is an aliphatic tetravalent group and B is a divalent group having at least one chemical structure represented by the following chemical formula (2) in the chemical structure: and X1 and X2 are each independently hydrogen, a C1-6 alkyl group or a C3-9 alkylsilyl group.
摘要:
A process for forming shaped three-dimensional products is described made from a composition containing at least one filler and an aromatic liquid crystal polymer. In one embodiment, the process includes forming a substrate such as a film, a sheet or a tube, through an extrusion process. Once the substrate is formed, the substrate is then heated and fed to a shaping process. The shaping process may comprise a thermal forming process or a blow molding process. In order to form the three-dimensional products, the aromatic liquid crystal polymer has a high heat of crystallization, a high melt temperature and/or a high melt viscosity.
摘要:
The invention relates to compositions comprising polyethylene terephthalate (PET), poly(1,4-cyclohexanedimethanol terephthalate) (PCT) and titanium dioxide, to the use of these compositions for production of products resistant to heat distortion for short periods, and to a process for producing polyester-based products resistant to heat distortion for short periods, preferably electric or electronic polyester-based products, especially polyester-based optoelectronic products.
摘要:
Provided is a friction material composition comprising: a binder; a fibrous base material; an abrasive material; an inorganic filler; and an organic filler, wherein the friction material composition further comprises: at least one selected from the group consisting of zinc, a cellulose fiber as the fibrous base materials and a flame retardant fiber as the fibrous base materials; an iron-based fiber as the fibrous base material in an specified amount; and an inorganic abrasive material having a Mohs hardness of 8 or higher and a particle size of 1 μm or larger as the abrasive material in an amount of 1 wt % or less. The present invention can provide a friction material composition which is less destructive to facing materials compared to conventional products, which has a high friction coefficient upon braking when used in repeated braking during high-speed traveling, and which is capable of suppressing pad wear and uneven pad wear, in the case that the friction material composition is formed into a brake pad for passenger cars. The present invention can also provide a friction material and a friction member using this friction material composition.
摘要:
A xylylenediamine-based polyamide resin/fiber composite material and molding are provided that do not exhibit a decline in properties under high temperatures and high humidities, and that exhibit a high elastic modulus and present little warping, and exhibit better recycle characteristics, a better moldability, and a better productivity than for thermosetting resins. The polyamide resin-type composite material comprises a fibrous material (B) impregnated with a polyamide resin (A) wherein at least 50 mole % of diamine structural units derived from xylylenediamine, and having a number-average molecular weight (Mn) of 6,000 to 30,000, and containing a component of a molecular weight of not more than 1,000 at 0.5 to 5 mass %.
摘要:
Provided is a friction material composition comprising: a binder; a fibrous base material; an abrasive material; an inorganic filler; and an organic filler, wherein the friction material composition further comprises: at least one selected from the group consisting of zinc, a cellulose fiber as the fibrous base materials and a flame retardant fiber as the fibrous base materials; an iron-based fiber as the fibrous base material in an specified amount; and an inorganic abrasive material having a Mohs hardness of 8 or higher and a particle size of 1 μm or larger as the abrasive material in an amount of 1 wt % or less. The present invention can provide a friction material composition which is less destructive to facing materials compared to conventional products, which has a high friction coefficient upon braking when used in repeated braking during high-speed traveling, and which is capable of suppressing pad wear and uneven pad wear, in the case that the friction material composition is formed into a brake pad for passenger cars. The present invention can also provide a friction material and a friction member using this friction material composition.
摘要:
A polyolefin separator having an heat-resistant ultrafine fibrous layer and a secondary battery using the same, in which the separator has a shutdown function, low thermal contraction characteristics, thermal endurance, excellent ionic conductivity, excellent cycling characteristics at the time of battery construction, and excellent adhesion with an electrode. The present invention adopts a very simple and easy process to form an ultrafine fibrous layer through an electrospinning process, and at the same time, to remove solvent and to form pores. Accordingly, the separator of the present invention is useful particularly for electrochemical devices used in a hybrid electric automobile, an electric automobile, and a fuel cell automobile, requiring high thermal endurance and thermal stability.
摘要:
A fire resistant enclosure comprising an enclosure base including a base cap and a bucket-style base body is provided. The base body includes a bottom wall with a side wall extending upwardly therefrom defining a base cavity. The side wall includes an upper peripheral edge that defines an opening in the base cavity. A data storage device positioned within the base cavity. Fire resistant insulation material is positioned within the base cavity to encapsulate the data storage device, wherein the insulation material fills the base cavity to a level below the upper peripheral edge, wherein the base cap is configured to be coupled with the base body to enclose the data storage device within the enclosure base. In another aspect, an enclosure base and an enclosure lid may be provided, wherein each include bucket-style bodies. The enclosure base and lid define a storage compartment for the data storage device.