36results about How to "Reduce processing viscosity" patented technology

The invention relates to a hyperbranched poly (ether ketone), a preparation method thereof and application of the material in viscosity modifiers. The hyperbranched poly(ether ketone) is prepared wit BB2-type monomers 2, 4, 6 trifluoro phenyl ketone and A2-type monomers hydroquinone, resorcin, bisphenol A, and hexafluoro-bisphenol A or biphenyl diphenol as reactants, potassium carbonate or sodiumcarbonate or the mixture of the potassium carbonate and the sodium carbonate as a salification agent, and sulfolane or N, N-dimethyl ketopyrrolidine as a solvent through mixing, salification, polycondensation reaction and after treatment. The solid content is 20 to 30 percent; the dosage of the salification agent is 1 to 1.1 time of the dosage of the A2 monomers. Fluorine terminated hyperbranchedpolyaryletherketone and hydroxy terminated superbranched polyaryletherketone are got respectively by adjusting the ratio of the dosages of the BB2-type and A2-type monomers. The hyperbranched poly (ether ketone) is characterized in that by adding the superbranched polyaryletherketone, the mechanical property and the thermostability of linear polyaryletherketone are not reduced while the melt viscosity of the linear polyaryletherketone is reduced.

The invention relates to the technical field of protective films, in particular to a PET protective film with good wear resistance and strong impact resistance and its manufacturing process. The PET protective film includes a PET film layer and an adhesive layer. The PET film layer consists of an outer layer, The middle layer and the inner layer are composed of three co-extruded and bonded films. The adhesive layer is coated on the inner layer of the PET film layer. The PET film layer adopts a three-layer structure. The inner layer of the PET film layer maintains good The wettability of the PET film layer increases the cohesive force between the inner layer of the PET film layer and the adhesive layer, and prevents the PET film layer from falling off during use; the middle layer of the PET film layer plays a role in maintaining the strength of the present invention; the PET film layer The outer layer maintains good surface smoothness and wear resistance in terms of raw material selection. A PET protective film with good wear resistance and strong impact resistance of the present invention has low production process cost and simple process, and corona treatment increases the wettability of the inner layer of the PET film layer and increases the Adhesion to the adhesive layer.

The invention discloses a high-thermal-conductivity nylon-graphite-low-melting-point metal composite and a preparation method thereof. The high-thermal-conductivity nylon-graphite-low-melting-point metal composite is prepared from, by weight, 20%-50% of nylon resin, 30%-60% of graphite, 5%-20% of low-melting-point metal, 0.1%-1% of antioxidant and 0.1%-1% of lubricant. The low-melting-point metal has the low melting point, the high thermal conductivity, and the low viscosity in a molten state, dispersion of filler in a matrix can be promoted through addition of the low-melting-point metal, the thermal conducting property is improved, and processing viscosity is reduced. The composite has the advantages of being high in thermal conductivity, low in density, good in mechanical and processing property, uniform in filler dispersion and the like.

The invention discloses a method for preparing a hyperbranched polymer-modified boron nitride heat-conducting and insulating composite material. The preparation method comprises the following steps: (1) adding hyperbranched polymers, boron nitride fillers and organic solvents into a container , centrifuged and dried to obtain hyperbranched polymer modified boron nitride after ultrasonic treatment; (2) the hyperbranched polymer modified boron nitride prepared in step (1) and matrix resin, curing agent, curing agent accelerator mixing and curing to obtain the thermally conductive and insulating composite material. The invention reduces the processing viscosity of the composite material, improves the processing performance of the composite material, improves the dispersion of boron nitride and its interface compatibility with the resin matrix, and prepares a composite material with high thermal conductivity and excellent mechanical properties. composite material.

The invention relates to a manufacturing method of a modified bamboo powder-based PC / ABS (Poly carbonate / Acrylonitrile Butadiene Styrene) alloy in the field of high polymer materials. The manufacturing method comprises the following steps: carrying out blending and internal mixing on bamboo powder, ABS-g-MAH (Maleic Anhydride), a fiber pre-dispersing agent and a coupling agent to obtain an ABS-g-MAH-g-bamboo powder composite; blending the ABS-g-MAH-g-bamboo powder composite, PC-g-EVA (Ethylene Vinyl Acetate) and PEW (polyethylene wax)-g-MAH at high speed and carrying out melt blending to obtain the modified bamboo powder-based PC / ABS alloy. The alloy material manufactured by the method disclosed by the invention not only has superhigh normal-temperature impact tenacity and low-temperature impact tenacity, but also has low viscosity property, is easy for molding processing of larger products, and has relatively high tensile strength, relatively low cost and an environment-friendly effect as well as a wide market value.

The invention discloses a rubber composition for an engineering tire tread, comprising the following components: 100 parts by weight of a diene-based rubber component, 5-100 parts by weight of carbon black, 1-50 parts by weight of silicon dioxide, 1 -30 parts by weight of modified bisphenol phenolic resin, 1-10 parts by weight of fatty acid amine salt compound, as engineering tire tread compound, its aging resistance, tear resistance and wear resistance have been improved, In addition, it maintains good mechanical properties and processing properties.

The invention discloses an epoxy resin and a preparation method and application thereof. By introducing diphenyl ether and meta-position structure in the epoxy resin, when the viscosity of the epoxy resin is above the melting point of 65 DEG C, the epoxy resin can be abruptly reduced to below 0.1Pa.s; and the epoxy resin can be applied in the fields of encapsulation materials of integrated circuits, carbon fiber reinforced composite materials, adhesive, laminated boards and the like. The epoxy resin provided by the invention has the advantages of low processing viscosity, excellent heat resistance and the like, also has the advantages of low water absorption, low dielectric constant and low dielectric loss when being used for the encapsulation materials of the integrated circuits, and has important application value.

The invention provides a tire tread rubber composition which has good processing performance, packing dispersibility and wearing resistance and has no hysteresis loss increase. The rubber composition is prepared from the following components in parts by weight: 100 parts of rubber, 40-120 parts of silicon dioxide, 0.1-20 parts of amine salt and 1-20 parts of silane coupling agent in 100 parts of silicon dioxide. The invention also relates to an inflatable tire using the rubber composition for preparing the tire tread.

The invention discloses a polyphosphate compound containing a phenolphthalein derivative and a high polymer material applying the same. The polyphosphate compound containing the phenolphthalein derivative has high thermal stability and can serve as a viscosity reducer and a fire retardant; and when the polyphosphate compound containing the phenolphthalein derivative is applied to the high polymer material, processing viscosity of engineering plastic can be greatly reduced, thermal properties of the macromolecular material are also better reserved, and a good fire retardant effect is also realized.