7results about How to "High foaming ratio" patented technology

This invention provides a production process for natural latex sponges with high latex content, comprising the following steps: (1) raw material preparation and pre-vulcanization; (2) adding the pre-vulcanized latex, zinc oxide, and curing agent dispersion obtained above together into a foaming device for foaming; (3) vulcanization process; (4) washing, dehydration, and drying of the finished product. This invention's production process for natural latex sponges with high latex content allows sulfur to be evenly dispersed in the natural latex, and then, through ultrasonic waves, the sulfur can fully react with the latex, effectively shortening the latex pre-vulcanization time and increasing the foaming ratio. This not only significantly improves production efficiency and maintains the various properties of latex products, but also reduces the amount of sulfur used, and produces natural latex products with a higher latex content.

The application provides a polyolefin foamed bead and a preparation method and a foamed product thereof, and belongs to the technical field of foamed materials. The preparation method of the polyolefin foamed bead comprises the following steps: mixing polyethylene, an alpha-olefin elastomer and a crosslinking agent, and then adding the mixture into an open mill to perform melt extrusion and granulation, so as to obtain a polyolefin composite; mixing the polyolefin composite with polypropylene, adding a supercritical fluid in a plasticizing stage of a first-order extruder, and adopting a cooling process in a second-order extruder, so as to obtain the polyolefin foamed bead. The polyolefin foamed bead has low forming pressure, high heat resistance and high foaming ratio.

The utility model provides a kind of HNSPS low energy consumption external wall external thermal insulation system, it is related to external wall thermal insulation technical field, including base wall, adhesive layer, thermal insulation layer and protective layer;Base wall includes concrete wall or masonry wall;Adhesive layer includes bonding mortar and anchor bolt, bonding mortar is located base wall outside;Thermal insulation layer is HNSPS insulation board, thermal insulation layer is located between adhesive layer and the protective layer of outermost layer.The utility model has the beneficial effects of: reasonable in design, simple structure, safe and reliable, improve the fire performance of system, reduce the fire occurrence in the use process of the product.

The utility model discloses a pressurizing type foam generator structure which comprises an air pump, an air pipe, an air inlet, a foam liquid storage cavity, a pressurizing cavity and a foam nozzle. The air inlet is formed in and communicated with the bottom of the foam liquid storage cavity; an output port of the air pump is connected to the air inlet through the pipeline; the top of the foam liquid storage cavity is communicated with the pressurizing cavity to form an integral space; and the foam nozzle is connected and communicated with the pressurizing cavity. Under the condition that the same amount of foam is jetted, the consumption of consumed foam liquid consumables is lower, the water content of the jetted foam is lower, the foam expansion is high, and meanwhile, the foam jetting device has the advantages of being simple in overall structure, low in production cost, small and exquisite in size, low in failure rate and the like.

The application relates to the field of high polymer foaming materials, and particularly discloses a preparation method of elastic polypropylene composite foaming beads, the foaming beads and a molded product thereof, and the preparation method of the elastic polypropylene composite foaming beads comprises the following steps: uniformly mixing polypropylene resin, alpha-olefin elastomer and an additive, melt plasticizing, the ratio of the melt mass flow rate of the polypropylene resin to that of the alpha-olefin elastomer being 1:1-3, to obtain a composite; injecting a supercritical fluid, the supercritical fluid accounting for 0.5-3.0 wt% of the total mass of the composite, mixing and melting to obtain a mixed melt; gradiently cooling the mixed melt, then extruding, cutting and drying, then adding a dispersion medium and a foaming agent, impregnating through pressurization and heating, then releasing pressure to foam, washing, drying and curing, to obtain the foaming beads; the molded product is obtained by water vapor heating molding of the foaming beads; and the foaming beads have the advantages of good compatibility and dispersibility, good heat resistance, high expansion ratio, high elasticity and dimensional stability.

The invention relates to a polyphenyl ether / polystyrene foam forming body as well as a preparation method and application thereof, and belongs to the technical field of foaming. The invention provides a preparation method of a polyphenyl ether / polystyrene foam formed body. The preparation method comprises a modification step, a foaming step and a bonding step, in the modification step, polyphenyl ether, a plasticizer and an antioxidant are blended and granulated to obtain modified polyphenyl ether particles; in the foaming step, the modified polyphenyl ether particles are subjected to rapid pressure relief foaming, and polyphenyl ether bead foam is obtained; in the bonding step, polyphenyl ether bead foam, expandable polystyrene foam and water are mixed and then heated, and a polyphenyl ether / polystyrene foam formed body is obtained. According to the preparation method, a first-foaming and second-mixing strategy is adopted, compared with an existing first-mixing and second-foaming strategy, the preparation method does not need to depend on limited molds and water vapor molding, the bonding temperature of the polyphenyl ether bead foam and the expandable polystyrene foam is remarkably reduced, and the requirement of industrial production can be completely met.

The invention discloses a polylactic acid foam material as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The invention provides a polylactic acid foam material. The polylactic acid foam material is prepared from the following components in parts by weight: 80 to 95 parts of polylactic acid, 5 to 15 parts of poly (butylene terephthalate)-adipate, 2 to 6 parts of Expancel microspheres, 0.1 to 0.5 part of organic nucleating agent, 1 to 5 parts of plasticizer, 0.5 to 2 parts of compatilizer and 0.2 to 2 parts of antioxidant, wherein the polylactic acid is a mixture of poly (L-lactic acid) and poly (D-lactic acid), and the weight ratio of the poly (L-lactic acid) to the poly (D-lactic acid) is (90-96): (4-10); the foaming temperature of the Expancel microspheres is 115 DEG C to 140 DEG C, and the maximum foaming temperature of the Expancel microspheres is 170 DEG C to 205 DEG C. Through synergism of the components, the problems of low crystallinity and low heat-resistant temperature of the poly (L-lactic acid) are solved. Meanwhile, the system compatibility is good.