2249 results about "Melt blending" patented technology

Shaped microporous articles are produced from polyvinylidene fluoride (PVDF) and nucleating agents using thermally induced phase separation (TIPS) processes. The shaped microporous article is oriented in at least one direction at a stretch ratio of at least approximately 1.1 to 1.0. The shaped article may also comprise a diluent, glyceryl triacetate. The shaped microporous article may also have the micropores filled with a sufficient quantity of ion conducting electrolyte to allow the membrane to function as an ion conductive membrane. The method of making a microporous article comprises the steps of melt blending polyvinylidene fluoride, nucleating agent and glyceryl triacetate; forming a shaped article of the mixture; cooling the shaped article to cause crystallization of the polyvinylidene fluoride and phase separation of the polyvinylidene fluoride and glyceryl triacetate; and stretching the shaped article in at least one direction at a stretch ratio of at least approximately 1.1 to 1.0.

One embodiment of an intumescent composition comprises a halogenated polymer, antimony oxide, and intercalated graphite, while one embodiment of an intumescent additive mixture comprises antimony oxide and intercalated graphite.One embodiment of the method of making an intumescent composition comprises melt blending a halogenated polymer with antimony oxide, and intercalated graphite.

A poly(arylene ether)-polyolefin composition is prepared by melt-blending a poly (arylene ether), a poly(alkenyl aromatic) resin, a hydrogenated block copolymer of an alkenyl aromatic compound and a conjugated diene, and an unhydrogenated block copolymer of an alkenyl aromatic compound and a conjugated diene to form a first blend, and melt-blending the first blend and a polyolefin to form a second blend. Reinforcing fillers may, optionally, be added during formation of the second blend or in an additional step. Multiple mixing elements, low throughput, and high extruder rotations per minute may be used to achieve high energy mixing of the first and second blends. Compositions prepared by the method exhibit an improved balance of impact strength, stiffness, and heat resistance, as well as reduced variability of physical properties.

The invention provides a straw 3D printing consumable and a preparation method thereof. The formula includes the following raw materials in mass percentage: 40 to 69 percent of polylactic acid, 30 to 59 percent of straw powder, 0 to 5 percent of a compatilizer, and 0.2 to 3 percent of other additives. Straws, a crop byproduct, are fully utilized by the straw 3D printing consumable for surface modification, and the degradable material polylactic acid is added for melt blending. Compared with the prior art, the 3D printing material provided by the invention has stable performances, can replace common 3D plastic consumables in 3D printing, is non-toxic, low-carbon and environment-friendly, and has superior comprehensive performances, thereby achieving considerable economic value and broad market prospects.

A melt-processed protein composition formed from a protein, plasticizer, and an electrophilic reagent is provided. The electrophilic reagent, for instance, may be selected to undergo a nucleophilic addition reaction with free sulfhydryl and / or thiyl radicals to help minimize the formation of disulfide crosslinking bonds that could otherwise lead to protein aggregation during melt processing. To enhance the degree to which the electrophilic reagent can limit crosslinking, a plasticizer is also employed that helps to mediate the adsorption of the electrophilic reagent into the internal structure of the protein, where it can be more stably retained. Furthermore, the temperature and shear rate employed during melt blending may also be selected to be relatively low to help limit polypeptide dissociation, thereby minimizing the impact of aggregation and embrittlement.

A polymer alloy fiber that has an islands-in-sea structure of two or more kinds of organic polymers of different levels of solubility, wherein the island component is made of a low solubility polymer and the sea component is made of a high solubility polymer, while the diameter of the island domains by number average is in a range from 1 to 150 nm, 60% or more of the island domains in area ratio have sizes in a range from 1 to 150 nm in diameter, and the island components are dispersed in a linear configuration. A method for manufacturing the polymer alloy fiber includes melt spinning of a polymer alloy that is made by melt blending of a low solubility polymer and a high solubility polymer.

The invention relates to a wood plastic composite, in particular to a high-intensity wood plastic composite board and a fabrication method thereof. The method for fabricating the high-intensity wood plastic composite board comprises the following steps: treating nano titanium dioxide with silane coupling agent to obtain modified nano titanium dioxide; mechanically stirring the modified nano titanium dioxide, plastic particles, maleic anhydride grafted plastic particles, calcium stearate and the like, and extruding and pelleting all the materials to obtain modified plastic particles; mechanically stirring the modified plastic particles, wood flour, terpene resin, chopped glass fiber, white oil, antioxidant and the like, and extruding, melt-blending and pelleting all the materials to obtain high-intensity wood plastic composite particles; and finally extruding the high-intensity wood plastic composite particles with a machine to mold the high-intensity wood plastic composite board. The high-intensity wood plastic composite board has extremely wide application range, and is applied to the fields such as transportation, construction, decoration, ornament, municipal works, garden and park, packaging and the like. The high-intensity wood plastic composite board has the advantages of reproducibility, low cost and higher mechanical properties such as static bending strength and the like, thereby being an ideal material for replacing wood. Compared with traditional wood plastic composites, the high-intensity wood plastic composite board has longer service life, and is a novel upgrade product of the present wood plastic composites.