33results about How to "Stable Peel Strength" patented technology

The invention provides a PE powder thermally sprayed anticorrosion coating for a petroleum and natural gas pipe, which is a blended interface anticorrosion coating formed on the inner or outer wall of the petroleum and natural gas pipe by thermally spraying low-temperature setting epoxy powder (PBE), holt melt polymer gel (AD) and modified polyethylene (PE)/ propenepolymer (PP) powder on the inner or outer wall of the petroleum and natural gas pipe in turn. The anticorrosion coating has an ultrahigh stripping strength for the petroleum and natural gas pipe, overcomes the AD/PE intra-layer separation of the conventional 3PE anticorrosion technology, and improves the anticorrosion performance of the pipe; and the anticorrosion layer eliminates a cathode shielding area, improves cathode protection resistance, reduces drawbacks of 'edge turning' at a weld joint part and effectively reduces coating cost due to a one-time spraying process.

The invention discloses the technical field of chip cutting protection films, and particularly relates to an antistatic semiconductor chip cutting protection film. The protection film comprises an antistatic release coating, a PVC blue film, a blue film protection base coating and an antistatic acrylic adhesive layer, and has the advantages of good flexibility, high temperature resistance, easiness in wafer expansion and wafer cutting, and capability of eliminating static electricity generated by friction in wafer expansion and cutting; the arrangement of the blue film protection prime coat can prevent a plasticizer in the PVC blue film from being separated out and permeating into the adhesive layer to a certain extent, the high temperature resistance and solvent resistance of the PVC blue film are improved, the PVC blue film is not prone to shrinkage, and the antistatic acrylic adhesive layer is stable in peel strength, resistant to high temperature of 180 DEG C and antistatic. And the PVC blue film can be used for striking and effectively identifying the protective film, so the use is convenient. The total thickness of the protective film is 80 +/-2 [mu]m, the peel strength is 100 +/-20 gf/inch, no adhesive is left, the antistatic resistance value is 106-109 omega, and the release force is 20 gf/inch.

The invention discloses release paper taking stearate as a release agent. The release paper includes base paper, an anti-permeation primer layer and a release layer which are sequentially composited,and the release layer takes the stearate as the release agent and takes polyvinyl alcohol resistant to high temperature as a resin. The release layer comprises, by weight parts, 100-300 parts of polyvinyl alcohol solution, 0-20 parts of alkyd resin, 2-30 parts of stearate release agent, 2-36 parts of matting agent, 1-10 parts of coating aid and 30-200 parts of water. The release paper is characterized by resisting high temperature, can be applied to a process of production of PU, PVC and PU/PVC composite artificial leather at the same time, the coating amount is low, the release paper is not curled, and the peeling strength can be adjusted for different artificial leather resins.

The invention discloses a stably and cleanly stripped glued medical instrument packaging material comprising a gloss paint protective layer, an ink-printed paper sheet layer, a barrier layer and a glue layer arranged from top to bottom; a resin layer is extruded and compounded from each of two sides of the barrier layer; and main resin of the glue layer is a water-based adhesive. The invention further discloses a preparation method of the stably and cleanly stripped glued medical instrument packaging material; the stably and cleanly stripped glued medical instrument packaging material is suitable for a pressure steam and ethylene oxide sterilization way, the storage period of a sterilized product is long, and the product quality and clinic application safety are guaranteed; the stably andcleanly stripped glued medical instrument packaging material is excellent in barrier property and capable of reducing the occurrence rate of loss such as rustiness of metal goods and prolonging the service life of the goods; and the stably and cleanly stripped glued medical instrument packaging material has stable and easy stripping and sealing effects after being sterilized, so that the labor intensity of nursing staffs is relieved.

The invention discloses cover strip structure. The cover strip structure comprises two substrate film layers; the two substrate film layers are connected as a whole through a first adhesive layer; a second adhesive layer is arranged on the surface, without the first adhesive layer, of the first substrate film layer; two symmetric incisions are arranged on the second adhesive layer in the length direction; and the depths of the incisions extend from the second adhesive layer into the substrate film layer connected with the second adhesive layer. The cover strip structure achieves stable and uniform stripping strength.

Disclosed is a cover tape which comprises at least a base layer (A), an intermediate layer (B), a peeling layer (C), the primary component of which is a thermoplastic resin, and a heat seal layer (D), the primary component of which is a thermoplastic resin that can be heat sealed to a carrier tape. The tensile storage modulus (c) of the thermoplastic resin that constitutes the peeling layer (C) is within the range of 1×10⁶ Pa to 1×10⁸ Pa. The tensile storage modulus (d) of the thermoplastic resin that constitutes the heat seal layer (D) is within the range of 1×10⁸ Pa to 1×10¹⁰ Pa. The ratio of (c) and (d) satisfies 1×10⁴≧(d)/(c)≧1×10. This kind of cover tape has the appropriate peel strength and sufficiently low fluctuation in peel strength when heat sealed to a thermoplastic resin carrier tape. Therefore, the tape will not tear even under shock caused by high-speed peeling, and sticking of electronic parts does not occur even when set aside for a long period of time of 24 to 72 hours in a high-temperature environment of 60 to 80° C.

The invention relates to an adhesive for woodworking flat pasting. The adhesive is prepared from the following components in parts by weight: 30 to 40 parts of amorphous polyester polyol; 25 to 35 parts of liquid polyester polyol; 20 to 30 parts of crystalline polyester polyol; 5-10 parts of a polyurethane elastomer; MDI which is added according to the isocyanate number molar ratio that NCO/OH isequal to 1.6-2.0; 0.1 to 0.3 part of an antioxidant; 0.1 to 0.5 part of a catalyst; and 0.5 to 3 parts of a silane coupling agent. The adhesive disclosed by the invention has the advantages of higherviscosity, easiness in woodworking flat sticking, zero solvent discharge in the curing process, high curing speed, no edge shrinkage phenomenon, high and stable peel strength after curing and good heat resistance.

The invention provides a preparation method of CCK release paper. The method comprises the following process steps: respectively subjecting coniferous wood chemical pulp and broadleaf wood chemical pulp to pulping, pulp mixing, auxiliary material adding, wet paper making with pulp, pre-drying, coating in a machine, post-drying, calendaring, finishing and the like so as to obtain the CCK release paper. According to the invention, the raw paper is subjected to in-machine coating treatment, so that the waterproof and oil-proof performance and the high-temperature resistance of the CCK release paper are effectively improved, and the tensile strength, the surface smoothness, the covering property and the heat insulation property of the paper are further improved after the coating. The product prepared by the method provided by the invention has the characteristics of good barrier property, high smoothness, high internal binding force, stable peel strength, environmental friendliness and the like, is directly coated with silicon and does not need to be coated in release processing, has the characteristics of cost reduction and environmental protection, and is a typical product replacing plastic. The invention also provides the CCK release paper.

The invention discloses an epoxy adhesive and an application thereof. The purpose of the invention is to solve the problems of high energy consumption, long cycle, high etching liquid processing costand incompatibility with the environmental protection requirement in the production process of existing FPC lamp strips. The epoxy adhesive includes a polyurethane, a polyphenylene ether, an epoxy resin, a curing agent, a flame retardant, a filler and a solvent. A technology for preparing a PET cover film from the epoxy adhesive concretely comprises the following steps: uniformly coating one sideof an electric insulating film with the epoxy adhesive, allowing the electric insulating film coated with the adhesive to go through a drying oven in order to remove a solvent and dry the electric insulating film, performing rolling re-laminating the electric insulating film with a semi-cured adhesive layer to a release material, and finally aging the obtained product to obtain the PET cover film.The epoxy adhesive prepared in the invention and the PET cover film using the adhesive have a low release force and a stable peeling strength, can be used for preparing non-etched LED circuit boards,have a low production cost, and are green and environmentally friendly.

The invention discloses a multi-layer YBCO (Yttrium Barium Copper Oxide) superconducting tape stripping device and a stripping method thereof, and relates to the field of high-current-carrying superconducting tape preparation. Superconducting tapes which are welded together in a face-to-face manner are continuously stripped through the stripping device, and a superconducting long tape with multiple layers of YBCO is prepared; the problem that the manual stripping radius is difficult to control is solved; the force is difficult to control in the manual stripping process; and the manual stripping speed is unstable. According to the invention, the defects of manual stripping of the multi-layer YBCO superconducting layer are ingeniously avoided, an innovative stripping device is adopted, the operation steps are simplified, the stripping is more stable, the steps are concise, and the method has important significance for preparing the multi-layer YBCO superconducting long belt.

The invention discloses a composite armoring structure and an optical fiber cable, and the structure comprises a steel base band, and one surface of the steel base band is provided with a composite structure. The composite structure comprises a first film layer, a second film layer and a third film layer, and the first film layer and the steel base band are bonded through electromagnetic compounding; the second-layer film is made of polyethylene; the third-layer film is made of modified polypropylene; the steel base band is made of low-carbon steel, and the thickness of the steel base band ranges from 0.1 mm to 0.3 mm; the outer surface of the steel base band is provided with a chromium-plated textured layer; the first layer of film is made of a propylene copolymer. The stripping strength of the second layer film and the third layer film is relatively stable, stripping is convenient, the third layer film and the outer sheath layer of the optical cable can be firmly bonded, and the optical cable can be used for stripping the outer sheath layer and an armored structure (without the third layer film) during installation or maintenance, so that the installation and use efficiency is improved; and the head of the optical cable can be conveniently used, and separation and connection (or installation) are facilitated.