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67results about How to "Cohesive" patented technology

Hot-melt pressure sensitive adhesive for adhesive tapes, and preparation method thereof

The invention relates to a hot-melt pressure sensitive adhesive, and concretely relates to a hot-melt pressure sensitive adhesive for adhesive tapes, and a preparation method thereof. The hot-melt pressure sensitive adhesive comprises a styrenic thermoplastic elastomer SIS, a styrenic thermoplastic elastomer SBS, petroleum resin, rosin glyceride, a primary antioxidant, an auxiliary antioxidant anda softener, wherein the styrenic thermoplastic elastomer SIS is a linear structure, the styrene content is 20-28%, and the diblock content is 20-28%; and the styrenic thermoplastic elastomer SBS is astar structure, the styrene content is 28-32%, and the diblock content is 12-18%. The purpose of the invention is to solve the problem of poor use performance of the adhesive tapes, caused by failedcombination of the initial adhesion, the permanent adhesion and the aging resistance of existing hot-melt pressure sensitive adhesives for adhesive tapes. The initial adhesion (the initial adhesion includes ring initial adhesion and 180 DEG peel strength) of the hot-melt pressure sensitive adhesive of the invention meets use requirements, and has a high adhesion and a good aging resistance. The present invention also provides the preparation method of the hot-melt pressure sensitive adhesive for adhesive tapes.
Owner:ZIBO LUHUA HONGJIN NEW MATERIAL CO LTD

Agitation pile water stopping curtain for reclamation deep and thick block stone area and construction method thereof

The inventio provides an agitation pile water stopping curtain for a reclamation deep and thick block stone area and a construction method thereof. The construction method of the agitation pile waterstopping curtain for the reclamation deep and thick block stone area includes following steps: (1) performing agitation pile reinforcement on a soil layer above a block stone layer in a block stone containing area in the axial direction of a foundation pit support; (2) using a rotary drilling rig for performing drilling hole leading construction on the block stone layer after completing the reinforcement; (3) performing clay backfilling on the hole leading construction area of the rotary drilling rig; and (4) performing construction of the agitation pile water stopping curtain on the block stone area after being completely treated. The agitation pile water stopping curtain for the reclamation deep and thick block stone area and the construction method thereof can complete the groove segment division drilling hole leading construction by reinforcing the soil layer above the block stone area, can backfill drill holes with clayey soil or sandy soil, and then perform the routine construction of the agitation pile water stopping curtain, and solve the problem that the agitation pile water stopping curtain cannot be constructed on the soil layer containing block stone.
Owner:WUHAN SURVEYING GEOTECHN RES INST OF MCC

Concrete water-permeable road surface as well as paving method thereof and maintenance and restoration method thereof

The invention discloses a concrete water-permeable road surface as well as a paving method thereof and a maintenance and restoration method thereof, relates to the field of road construction, and particularly relates to a road surface with a water-permeable requirement, which is applicable to an urban municipal-administration footway, a garden-landscape pathway, a non-heavy-load road-surface plaza and the like, a paving method thereof and a maintenance and restoration method thereof. The invention provides a concrete water-permeable road surface which is good in water permeability, is stable and firm to pave and mount, and can be repeatedly restored, a paving method thereof and a maintenance and restoration method thereof. A road-surface brick comprises a rectangular brick body; four corners of the brick body are provided with circular-arc grooves respectively, so that the four circular-arc grooves form a circular hole used for placing a water-permeable filling body when four brick bodies are spliced. Two side surfaces of the brick body are both provided with convex blocks and grooves; the two side surfaces each are provided with two grooves. Three side surfaces of the brick body are all provided with convex blocks and grooves; one side surface is provided with two grooves. By using the concrete water-permeable road surface as well as the paving method thereof and the maintenance and restoration method thereof, the key problems of a water-permeable concrete road-surface brick in technical and application aspects are solved; the application of the water-permeable concrete road-surface brick to the road construction in China is promoted.
Owner:江苏德智重工有限公司

Chrome-free passivating agent for hot galvanizing structural part and preparation method thereof

The invention relates to a chrome-free passivating agent for a hot galvanizing structural part. The chrome-free passivating agent for the hot galvanizing structural part is prepared from the followingraw materials in parts by weight: 10 to 20 parts of molybdate, 10 to 15 parts of phytic acid, 8 to 12 parts of glutinous rice flour, 2 to 4 parts of a cross-linking agent, 5 to 10 parts of water dispersible nano-silica, 2 to 4 parts of a dispersing agent and 46 to 63 parts of water, wherein the pH of the chrome-free passivating agent is 4.5 to 5.5; a preparation method of the chrome-free passivating agent for the hot galvanizing structural part comprises the following steps: after the glutinous rice flour is enabled to pass through a 200-mesh sieve, weighing various raw materials by weight, adding the phytic acid, the molybdate and the cross-linking agent into the water first, stirring uniformly, adding the glutinous rice flour, heating to 60 to 70 DEG C, stirring until the glutinous riceflour is dissolved, adding the dispersing agent and the water dispersible nano-silica, then, stirring and dispersing uniformly at 60 to 70 DEG C, then regulating the pH to be 5.0, and cooling to obtain the chrome-free passivating agent for the hot galvanizing structural part. The chrome-free passivating agent for the hot galvanizing structural part is environment-friendly and chrome-free, and hashigh corrosion resistance.
Owner:WUXI EPIC TECH

Bone tissue repair material as well as preparation method and application thereof

The invention discloses a bone tissue repair material and a preparation method and application thereof. The preparation method comprises the steps that in a liquid phase system with the pH value of 10-12, soluble calcium salt and soluble phosphate or phosphoric acid with the molar ratio of Ca to P being 5: 3 are subjected to an in-situ co-precipitation reaction on a natural polymer A, and hydroxyapatite natural polymer A nano-composite particles are formed after precipitate is dried and ground; and hydroxyapatite natural polymer A nano-composite particles are mixed uniformly with a natural polymer B solution, a mixture is put into a mold, vacuum freeze drying is carried out, soaking is carried out with absolute ethyl alcohol, and drying is carried out to obtain the bone tissue repair material. The bone tissue repair material is loose and porous, hydroxyapatite is not prone to leaking from the bone tissue repair material, and the bone tissue repair material is good in water absorption,soft after absorbing water and good in elasticity and can be used for common bone defect repair in the oral implant department, the oral repair department, the orthopedics department and other surgerydepartments. The preparation method is simple and convenient to operate, easy to automate, clean in reagent and low in cost.
Owner:HUBEI SAILUO BIOLOGICAL MATERIAL CO LTD

Hot melt adhesive for siphon plate and preparation method of hot melt adhesive

The invention discloses a hot melt adhesive for a siphon plate and a preparation method of the hot melt adhesive. The hot melt adhesive is prepared from the following raw materials: first EVA (Ethylene Vinyl Acetate) resin, second EVA resin, tackifying resin, Fischer-Tropsch wax and an antioxidant, wherein the content of VA in the first EVA resin is 25-30 wt%, and the content of VA in the second EVA resin is 15-20 wt%; the tackifying resin comprises a first tackifying resin with a softening point of 98-110 DEG C and a second tackifying resin with a softening point of 130-150 DEG C. The hot melt adhesive can improve the cohesiveness of the siphon plate, and has good chemical stability, aging resistance and ozone resistance. The preparation method of the hot melt adhesive comprises the following steps: mixing the Fischer-Tropsch wax and the oxidizing agent, adding the second tackifying resin and the first EVA resin, adding the first tackifying resin and the second EVA resin, heating and stirring to completely melt the raw materials, filtering, and granulating to obtain the hot melt adhesive for the siphon plate, so that environment-friendly, non-toxic, safe and efficient production is realized.
Owner:FOSHAN XINTAO NEW MATERIAL TECH
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