摘要:
This disclosure relates to polyarylene sulfide that may exhibit and maintain excellent properties and a method for preparing the same, wherein the polyarylene sulfide is in the form of pellet of 2 to 10 mm size immediately after melt polymerization, and has residual solvent content of 300 ppm or less, based on the total weight of resin.The polyarylene sulfide may exhibit and maintain excellent properties, particularly it does not generate foam in the product or stain on the surface, has excellent mechanical properties such as tensile strength, and the like, and thus, it may be usefully applied in the industrial field of preparing polyarylene sulfide and manufacturing a molded product using the same.
摘要:
This disclosure relates to polyarylene sulfide that may exhibit and maintain excellent properties and a method for preparing the same, wherein the polyarylene sulfide is in the form of pellet of 2 to 10 mm size immediately after melt polymerization, and has residual solvent content of 300 ppm or less, based on the total weight of resin.The polyarylene sulfide may exhibit and maintain excellent properties, particularly it does not generate foam in the product or stain on the surface, has excellent mechanical properties such as tensile strength, and the like, and thus, it may be usefully applied in the industrial field of preparing polyarylene sulfide and manufacturing a molded product using the same.
摘要:
A flat display including a display main body to receive a display panel to display an image and a receiving member which is formed with receiving holes disposed at opposite lateral sides of the display main body.
摘要:
An image forming apparatus, a developing device and a developer cartridge are disclosed. The developer cartridge includes a cartridge housing and a developer delivery unit to deliver a developer received in the cartridge housing. The developer delivery unit includes a delivery member and a contact portion to come into contact with the delivery member. The contact between the contact portion and the delivery member form a length longer than a straight line connecting one end of the contact portion to the other end.
摘要:
A developing cartridge includes an agitator including a pair of ribs to effectively force a toner to a center of a flexible agitator film. In the developing cartridge of an electrophotographic image forming apparatus including a housing containing the toner, a developing roller disposed such that a portion thereof is exposed to the housing, and the agitator which is provided in the housing and feeds the toner to the developing roller, the agitator includes a body, the flexible agitating film including a coupling groove and attached to the body, a hook provided on the body and inserted into the coupling groove, and the pair of ribs provided on the body.
摘要:
Provided are a projection optical system, a projection television, and a method of manufacturing a lens included in the projection optical system. The projection optical system includes lenses for projecting color beams onto a screen. A color filter layer, absorbing at least one of the color beams, is coated on the surface of at least one of the lenses.
摘要:
A display apparatus has a monitor body. The display apparatus includes a supporting part disposed in the monitor body; a stand having an mounting part mutually coupled to the supporting part; and an elastic member interposed between the supporting part and the mounting part. Here, the display apparatus in which the monitor body is easily coupled to the stand thereof is provided.
摘要:
An image forming apparatus and method are disclosed. The image forming apparatus comprises a photosensitive medium being formed an electrostatic latent image thereon; a developing roller developing a developer to the photosensitive drum being formed an electrostatic latent image; and a remnant developer sensing device sensing an electrical value between the developing roller and the photosensitive medium and determining the remaining amount of the developer of the developing device.
摘要:
The present invention relates to polyarylene sulfide, in which a ratio of a peak area of a polymer chain of a second polyarylene sulfide having a lower molecular weight than the maximum peak molecular weight to a peak area of a polymer chain of a first polyarylene sulfide having a higher molecular weight than the maximum peak molecular weight is 1.3 or less in the molecular weight distribution of the polyarylene sulfide, as measured by gel permeation chromatography using polystyrene as a standard, and a preparation method thereof. This polyarylene sulfide exhibits excellent processability and generates no burrs (flashes) or the like, and can satisfactorily mold a product requiring high molding precision.
摘要:
The present invention relates to a method for preparing polyarylene sulfide, in which the polyarylene sulfide is prepared by a polymerization reaction of reactants including a diiodo aromatic compound and a sulfur compound, the method including: further adding 0.01 to 10.0 wt. % of diphenyl disulfide with respect to the weight of the polyarylene sulfide to the reactants to form the polyarylene sulfide having a melting point of 265 to 320° C.The diphenyl disulfide included in the reactants according to the present invention costs far less than other conventional polymerization inhibitors to dramatically lower the production cost, and the polyarylene sulfide prepared using the diphenyl disulfide exhibits low iodine content and very excellence in thermal stability.