37results about How to "Good adhesion between layers" patented technology

A bilayer porous low dielectric constant (low-k) interconnect structure and methods of fabricating the same are presented. A preferred embodiment having an effective dielectric constant of about 2.2 comprises a bottom deposited dielectric layer and a top deposited dielectric layer in direct contact with the former. The bottom layer and the top layer have same atomic compositions, but a higher dielectric constant value k. The bottom dielectric layer serves as an etch stop layer for the top dielectric layer, and the top dielectric layer can act as CMP stop layer. One embodiment of making the structure includes forming a bottom dielectric layer having a first porogen content and a top dielectric layer having a higher porogen content. A curing process leaves lower pore density in the bottom dielectric layer than that left in the top dielectric layer, which leads to higher dielectric value k in the bottom dielectric layer.

A bilayer porous low dielectric constant (low-k) interconnect structure and methods of fabricating the same are presented. A preferred embodiment having an effective dielectric constant of about 2.2 comprises a bottom deposited dielectric layer and a top deposited dielectric layer in direct contact with the former. The bottom layer and the top layer have same atomic compositions, but a higher dielectric constant value k. The bottom dielectric layer serves as an etch stop layer for the top dielectric layer, and the top dielectric layer can act as CMP stop layer. One embodiment of making the structure includes forming a bottom dielectric layer having a first porogen content and a top dielectric layer having a higher porogen content. A curing process leaves lower pore density in the bottom dielectric layer than that left in the top dielectric layer, which leads to higher dielectric value k in the bottom dielectric layer.

The present invention provides a thermoplastic resin laminate including: a thermoplastic transparent resin (A) layer; a thermoplastic resin (B) layer formed of a methyl methacrylate-styrene copolymer and / or an acrylonitrile-styrene copolymer; and a thermoplastic resin (C) layer formed of a polycarbonate-based resin, the (B) layer being laminated on one surface, or each of both surfaces, of the (C) layer, and the (A) layer being laminated on the surface of the (B) layer, in which the thermoplastic transparent resin (A) includes a vinyl copolymer resin containing a (meth)acrylate constituent unit (a) and an aliphatic vinyl constituent unit (b) each having a specific structure at a molar ratio between the (meth)acrylate constituent unit (a) and the aliphatic vinyl constituent unit (b) of 15:85 to 85:15. The thermoplastic resin laminate has such characteristics as to be excellent in, for example, weather resistance against high-temperature, high-humidity environments, abrasion resistance, and interlayer adhesion, and is used, as a transparent substrate material or a transparent protective material, for an optical product, and in particular, portable display devices such as portable phone terminals, portable electronic game devices, and PDA's.

A method for producing a multilayer system on a substrate, wherein a first and a second layer are applied on the substrate, in each case by means of a vacuum coating process, provides adherence of the layers on each other, even if at least one of the layers of the multilayer system is porous. The layer applied first is, after its application and prior to the application of the other layer, partly removed again through an ion etching operation.

The invention relates to a frequency selecting metalized radome which can be widely used for various fields such as radar, communication and electronic countermeasures for realizing specific electromagnetic compatibility, reducing a radar scattering section area of the equipment, reducing interception probability and improving stealth performance. The radome is substantially a spatial domain filter which has advantages of low in-band insertion loss, high out-band suppression degree, wide passband, wide stopband and large incidence angle operation. The radome is composed of two frequency selecting surface layers and a plurality of dielectric layers. The cross section of the cover wall is provided with a fluorine carbon paint layer, an outer sheath, a periodical metal paster layer and a medium substrate thereof, a rubber film, a core layer, a periodical metal paster layer and a substrate thereof, and an inner sheath layer. The radome has advantages of excellent telecommunication performance, excellent structure and environment adaptability, and relatively high engineering practicability.

The invention discloses organic silicon composite polyurethane synthetic leather. The synthetic leather is composed of an organic silicon surface layer and a polyurethane base layer in sequence from top to bottom, the organic silicon surface layer is prepared from the following raw materials in parts by weight: 100 parts of vinyl polysiloxane, 1 to 40 parts of phenyl silicone resin, 1 to 15 partsof hydrogen-containing polysiloxane, 1 to 50 parts of a filler and 0.1 to 10 parts of a platinum catalyst. The synthetic leather compounded by the organic silicon and the polyurethane is good in interlayer adhesion, soft and plump in hand feeling, outstanding in hydrolysis resistance, salt mist resistance and flame retardance, low in VOCs emission and extremely small in pinhole and the like. Meanwhile, the invention further discloses a preparation method of the organic silicon composite polyurethane synthetic leather.

A multilayer composite containing the following layers: I. a first layer (layer I) of a moulding compound containing at least 40 wt. % of the following components: 1) 60 to 99 parts by wt. of a copolyamide based on hexamethylenediamine, terephthalic acid and an aliphatic dicarboxylic acid having 8 to 19 carbon atoms and 2) 40 to 1 parts by wt. of an olefinic copolymer as impact modifier, wherein the parts by wt. of 1) and 2) sum to 100; and II. a second layer (layer II) of a moulding compound containing at least 60 wt. % of fluoropolymer, has a high heat distortion temperature, a very good impact resistance, a high elongation at break and good layer adhesion.

A multilayer composite containing the following layers: 1. a first layer (layer I) of a moulding compound containing at least 40 wt. % of the following components: 1) 60 to 99 parts by wt. of a copolyamide based on hexamethylenediamine, terephthalic acid and an aliphatic dicarboxylic acid having 8 to 19 carbon atoms and 2) 40 to 1 parts by wt. of an olefinic copolymer as impact modifier, wherein the parts by wt. of 1) and 2) sum to 100; and II. a second layer (layer II) of a moulding compound containing at least 60 wt. % of a mixture of the following components: 1) 75 to 100 parts by wt. of a partly aromatic copolyamide and 2) 25 to 0 parts by wt. of an olefinic copolymer as impact modifier with the proviso that in the moulding compound of layer II the mixture of components 1) and 2) comprises at least 5 fewer parts by wt, of olefinic copolymer than in the moulding compound of layer I, has a high heat distortion temperature, a very good impact resistance, a high elongation at break and good layer adhesion.

A multilayer composite containing the following layers: I. a first layer (layer I) of a molding compound containing at least 40 wt. % of the following components: 1) 60 to 99 parts by wt. of a copolyamide based on hexamethylenediamine, terephthalic acid and an aliphatic dicarboxylic acid having 8 to 19 carbon atoms and 2) 40 to 1 parts by wt. of an olefinic copolymer as impact modifier, wherein the parts by wt. of 1) and 2) sum to 100; and II. a second layer (layer II) of a molding compound containing at least 60 wt. % of thermoplastic polyester, has a high heat distortion temperature, a very good impact resistance, a high elongation at break and good layer adhesion.

A multilayer composite containing the following layers: I. a first layer (layer I) of a molding compound containing at least 40 wt. % of the following components: 1) 60 to 99 parts by wt. of a copolyamide based on hexamethylenediamine, terephthalic acid and an aliphatic dicarboxylic acid having 8 to 19 carbon atoms and 2) 40 to 1 parts by wt. of an olefinic copolymer as impact modifier, wherein the parts by wt. of 1) and 2) sum to 100; II. a second layer (layer II) of a molding compound containing at least 60 wt. % of EVOH; III. a third layer of a polyamide molding compound, has a high heat distortion temperature, a very good impact resistance, a high elongation at break and good layer adhesion.

A method for producing a multilayer system on a substrate, wherein a first and a second layer are applied on the substrate, in each case by means of a vacuum coating process, provides adherence of the layers on each other, even if at least one of the layers of the multilayer system is porous. The layer applied first is, after its application and prior to the application of the other layer, partly removed again through an ion etching operation.

The invention discloses a synthetic leather of organosilicon composite polyurethane, which is composed of two layers of materials, which are an organosilicon surface layer and a polyurethane base from top to bottom; the organosilicon surface layer contains the following raw materials in parts by weight: ethylene 100 parts of base polysiloxane, 1-40 parts of phenyl silicone resin, 1-15 parts of hydrogen-containing polysiloxane, 1-50 parts of filler, 0.1-10 parts of platinum catalyst. The silicone composite polyurethane synthetic leather of this application has good interlayer bonding, and has soft and plump hand feeling, outstanding hydrolysis resistance, salt spray resistance, flame retardancy, low VOCs emission and extremely small pinholes and other properties. At the same time, the invention also discloses a method for preparing the synthetic leather of the organosilicon composite polyurethane.

The invention relates to a method and device for manufacturing a carbon fiber reinforced resin matrix composite material current heating LOM, wherein a prepreg tape of the carbon fiber reinforced resin-based composite material is conveyed to the upper part of a working platform, the working platform is moved upward to fit the prepreg tape, a pressing plate mechanism moves downwards to press the prepreg tape on the working platform, at the same time, the electrodes at both ends of the pressing plate are powered on the prepreg tape of a pressing area, the pressing plate mechanism is moved upwardaway from the prepreg tape after the prepreg tape is heated and solidified, a laser emitter cuts the prepreg tape along the cross-section of the three-dimensional model, the outer part of the cross-section is cut into fine pieces, and after the cutting is finished, the working platform descends off the prepreg tape, and then the whole prepreg tape is conveyed to the upper part of the working platform, the residual prepreg tape is retracted by a winding drum after being cut, that is, the single-layer forming and solidifying is completed, a process is recycled until the forming and solidifyingof the whole three-dimensional solid component is completed, that is, the required three-dimensional solid component is obtained; the forming mode is rapid and unsupported; the solidifying technologyis low in consumption and energy-saving.

A PVDC emulsion, made of the following components by weight: 23-50 parts of vinylidene chloride monomer, 7-23 parts of modified monomer, 0.2-0.5 part of initiator, 1-2 parts of emulsifier, Dispersant 33.8-67.5, PH regulator 0.001-0.02 parts. The present invention improves the heat resistance and adhesiveness of PVDC by selecting comonomers with specific functional groups, so that PVDC can be used as the barrier layer of the coating-type back sheet, which can not only improve the water vapor barrier property of the back sheet, but also add fluorine to the barrier layer. The carbon coating guarantees the weather resistance of the solar cell backsheet.

A housing element of a product includes a foil having a decorated side, where this decorated side of the foil is covered by a grip layer for realizing a grip effect. The other side of the foil is covered by a supportive layer. The grip layer may have a rib structure. Each of the supportive layer and the grip layer is applied to the foil in an injection molding process. A processing temperature of the material of the grip layer is significantly lower than an activation temperature of printing ink of a decorative covering of the foil, so that washout of the printing ink is prevented. Further, material of an adhesive layer of the foil is configured to establish adhesion to the material of the grip layer at this relatively low temperature.

The invention discloses a method for preparing a high-performance nickel-based alloy composite strip, which comprises the following steps: (1) preparation of a composite billet; (2) cold rolling of the billet; (3) recrystallization of the cold-rolled strip Annealing, finally get high-performance nickel-based alloy composite strip. The preparation method of a high-performance nickel-based alloy composite strip of the present invention obtains a nickel-tungsten composite strip with a high tungsten content by adopting a continuous extrusion method, and the interface bonding force between layers is good. Uniform and fine, a favorable deformation texture is formed during the cold rolling process, which is beneficial to the subsequent recrystallization annealing to obtain a nickel-based alloy composite strip with a strong cubic texture.