44results about How to "Improve shrinkability" patented technology

The invention provides a single-layer or multi-layer packaging film or sheet having at least one layer formed of a polyamide resin composition, wherein the layer formed of the polyamide resin composition is a layer (A) formed of a polyamide resin composition comprising a copolymer nylon (c) composed of an aliphatic nylon (co)polymer component (1) and an aromatic nylon (co)polymer component (2) in a proportion of at least 5 wt. %.

It is to provide a block copolymer and its copolymer composition which provides a heat shrinkable (multilayer) film with less spontaneous shrinkage while maintaining favorable low temperature shrinkability, and a heat shrinkable (multilayer) film containing the block copolymer. By using a block copolymer comprising a vinyl aromatic hydrocarbon and a conjugated diene characterized in that the relation of the loss tangent value obtained by dynamic viscoelasticity measurement with the temperature satisfies specific conditions, or a composition containing the copolymer composition as an essential component, a heat shrinkable (multilayer) film with less spontaneous shrinkability and less odor while maintaining favorable low temperature shrinkability can be obtained.

A block copolymer mixture comprising block copolymers (A), (B) and (C) each block comprising vinyl aromatic hydrocarbon and conjugated diene monomer units: wherein block (A) comprises from 75 to 95 mass % of a vinyl aromatic hydrocarbon and from 5 to 25 mass % of a conjugated diene, and which has a block portion composed mainly of a vinyl aromatic hydrocarbon having a number average molecular weight of from 30,000 to less than 150,000: block (B) comprises from 50 to 80 mass % of a vinyl aromatic hydrocarbon and from 20 to 50 mass % of a conjugated diene, and which has a block portion composed mainly of a vinyl aromatic hydrocarbon having a number average molecular weight of from 20,000 to less than 120,000, and block (C) comprises from 60 to 95 mass % of a vinyl aromatic hydrocarbon and from 5 to 40 mass % of a conjugated diene, which has at least one random copolymer block portion comprising, as monomer units, from 55 to 95 mass % of a vinyl aromatic hydrocarbon and from 5 to 45 mass % of a conjugated diene.

A heat-shrinkable polyester film having a heat-shrinkage change per degree Celsius (%/° C.) along the main shrinkage direction of 1.5 to 3.0 in the range of 60° C. to 70° C., 2.5 to 3.5 in the range of 70° C. to 80° C., 1.0 to 2.0 in the range of 80° C. to 90° C., and 0.1 to 1.0 in the range of 90° C. to 100° C., has a good appearance quality after shrinkage and thus suitable for a wrapping material, particularly a label for a bottle.

The invention relates to a ready-mixed plastering mortar for an interior wall. The ready-mixed plastering mortar for the interior wall is characterized by being prepared from the following raw materials: 60-70 parts of artificial sand, 12-13 parts of cement, 10-12 parts of II grade coal ash, 2-3 parts of cellulose ether, 2-3 parts of redispersible powder and 0.1-0.5 part of additives. The ready-mixed plastering mortar for the interior wall has excellent heating retaining property and water retaining property, and the adopted additives are capable of remarkably improving the properties such as anti-permeability, crack resistance and shrinkage reduction property of the mortar.

The invention discloses an impervious concrete shrinkage-reducing, water-reducing and waterproofing compacting agent and a production method thereof, wherein the compacting agent contains the following raw materials in parts by weight: 48-54 parts of a high-performance polycarboxylate superplasticizer containing 40% of solids, 13-21 parts of ferric trichloride, 5-10 parts of sodium gluconate, 3-5 parts of glucose, 10-15 parts of water, and further comprises 0.05-0.5 part of a defoaming agent and 0.1-2.0 parts of an air entraining agent. The compacting agent disclosed by the invention can significantly improve anti-permeability, shrinkage reduction, water-reducing rate, waterproofing performance and compactness; the compacting agent can effectively prevent water molecules from permeating and remarkably enhance strength; anti-permeability level is 12th, so that concrete particles are closer to bind and coverage is formed to prevent permeability, and simultaneously shrinkage is reduced for more than 30%; especially under severe environments, shrinkage is reduced; and the compacting agent is remarkable for effectively controlling a cracking effect.

The invention discloses a concrete contraction-reducing, anti-cracking, water reducing and proofing compacting agent and a preparation method thereof. The concrete contraction-reducing, anti-cracking, water reducing and proofing compacting agent is prepared from the raw materials in parts by weight: 52-55 parts of high-performance polycarboxylic type water reducer with the solid content of 40 percent, 15-20 parts of ferric chloride, 5-10 parts of sodium gluconate, 2-7 parts of sucrose and 10-15 parts of water. With the adoption of the concrete contraction-reducing, anti-cracking, water reducing and proofing compacting agent, the impermeability, the contraction reduction, the crack resistance, the water reducing ratio and the compacting effect can be greatly improved, permeation of water molecules is effectively prevented, the strength is greatly strengthened; and as the anti-permeability level reaches level 12, concrete particles can be adhered together very tightly and also form a coating, so that impermeability is reached, contraction can be reduced by above 30 percent, and especially in the severe environment, the contraction can be reduced, and the effect of effectively controlling cracking is outstanding.

The invention discloses a hafnium oxide-based ferroelectric capacitor and a manufacturing method thereof. The ferroelectric capacitor comprises a first bottom electrode layer (4), a second bottom electrode layer (5), and a hafnium oxide-based ferroelectric film layer (6b), a first top electrode layer (7) and a second top electrode layer (8) which are stacked sequentially from bottom to top, wherein the first bottom electrode layer (4) and the second top electrode layer (8) are conductive layers; and the second bottom electrode layer (5) and the first top electrode layer (7) are electrodes. Theferroelectric capacitor has good miniature and excellent ferroelectric properties.

The invention relates to colored premixed mortar and a production method of the colored premixed mortar. The colored premixed mortar is characterized by comprising the following raw materials in parts by weight: 60-70 parts of artificial sand, 12-13 parts of cement, 10-12 parts of class II pulverized fuel ash, 1-5 parts of an inorganic pigment and 0.1-0.5 part of additives. The colored premixed mortar disclosed by the invention has excellent stain resistance, stability, mechanical performance and anti-aging performance, and can not cause saltpetering and chromatic aberration phenomena; meanwhile, the colored premixed mortar has good tensile adhesive strength, compressive strength, anti-permeability, crack resistance, shrinkage-reducing performance, water-retention rate and other properties, and also has excellent working performance and construction properties such as easiness in pumping, easiness in compacting and the like.

The invention discloses a substation optical cable and belongs to the technical field of optical cables. The substation optical cable comprises an optical cable outer sheath; the inner end of the optical cable outer sheath is connected with an elastic buffering layer; the inner end of the elastic buffering layer is connected with a first flame-retardant layer; the inner end of the first flame-retardant layer is connected with a water-resisting layer; the inner end of the water-resisting layer is connected with a second flame-retardant layer; the inner end of the second flame-retardant layer isconnected with an optical cable inner tube; a plurality of cable cores in an annular array are arranged in the optical cable inner tube; metal phosphated steel wire reinforcing cores are arranged atthe center of the optical cable inner tube; the metal phosphated steel wire reinforcing cores are arranged between the plurality of cable cores; the optical cable inner tube is filled with grease; andthe cable cores are filled with a plurality of optical fibers; the outer end of the optical cable outer sheath is fixedly connected with a plurality of uniformly-distributed fixing sleeves; and therefore, the tensile strength and waterproofness of the optical cable can be improved, a condition that the optical cable is fractured and is subject to water infiltration due to natural environment andother external force factors can be almost avoided, and therefore, the stability and safety of the work of the optic cable can be improved.

The invention discloses a complementary type resistive random access memory based on GeTe and a preparation method thereof, and relates to the fields of novel micro-nano electronic materials and functional devices. The complementary type resistive random access memory disclosed by the invention comprises a bottom conducting electrode, a GeTe film dielectric layer arranged on the upper surface of the bottom conducting electrode and a top conducting electrode arranged on the upper surface of the GeTe film dielectric layer, wherein the bottom conducting electrode, the GeTe film dielectric layer and the top conducting electrode are prepared and obtained through a magnetron sputtering method. Resistance state switching occurs on the GeTe film dielectric layer to realize a complementary type resistive random access function through electric excitation and limiting current. The memory provided by the invention effectively solves the problem of current crosstalk in a cross array of the resistive random access memory, has the characteristics of simple preparation method, low cost, stable performance, high scaling performance and the like, and has excellent development potentials and application values in the aspect of developing nanoscaled nonvolatile memories with high memory density and low power consumption.

The invention provides a preparation method of a three-dimensional ferroelectric random access memory and the three-dimensional ferroelectric random access memory. The preparation method comprises thefollowing steps: while preparing a transistor based on a CMOS process, vertically integrating each ferroelectric storage unit of a three-dimensional ferroelectric capacitor on the transistor in sequence to obtain the three-dimensional ferroelectric random access memory. The ferroelectric storage unit of the three-dimensional ferroelectric capacitor sequentially comprises an interlayer medium (7),a capacitor bottom electrode (9), a ferroelectric film (10) and a capacitor top electrode (11) which are vertically deposited. A ferroelectric capacitor is integrated into a complementary metal oxidesemiconductor (CMOS), and a capacitor structure is converted from a plane to a three-dimensional structure to increase a capacitor area, so that higher storage density is realized, and the size of astorage unit is further reduced on the premise of not reducing storage charges.