30 results about "Polybutadiene acrylonitrile" patented technology

The invention discloses a polyurethane modified epoxy resin adhesive and a preparation method thereof. The adhesive is prepared from the following components of 30-80 parts polyurethane modified epoxy resin, 20-60 parts of fluorene-based epoxy resin, 10-40 parts of carboxyl-polybutadiene acrylonitrile liquid rubber, 10-60 parts of curing agent, 1-8 parts of thixotropic agent, 0.5-3 parts of compound accelerator and 2-6 parts of coupling agent. The preparation method comprises the steps of weighing each component according to the ratio, evenly mixing the polyurethane modified epoxy resin, the fluorene-based epoxy resin and the carboxyl-polybutadiene acrylonitrile liquid rubber under agitation at 50-70 DEG C; adding the curing agent, the thixotropic agent and the coupling agent and heating to 70-90 DEG C; evenly agitating, and cooling to room temperature after vacuum defoaming; and adding the compound accelerator under agitation at 40-50 DEG C until evenly mixing. The polyurethane modified epoxy resin adhesive disclosed by the invention is good in adhesion and simple in process, and can be used for materials such as buildings, metal, glass, plastic ceramic, and the like.

The invention relates to a high multi-axis impact polycarbonate composition and a preparation method of the high multi-axis impact polycarbonate composition. The composition comprises the following components in parts by weight: 50-70 parts of polycarbonate resin PC, 25-50 parts of polybutadiene-acrylonitrile-styrene copolymer resin ABS, 2-10 parts of toughening agent, 0.1-1 part of an antioxidant and 0.1-1 part of a lubricant. The preparation method of the high multi-axis impact polycarbonate composition comprises the following steps of: dividing raw material into parts A and B, wherein the part A comprises the PC, the antioxidant and the lubricant while the part B comprises the ABS and the toughening agent; and respectively premixing the parts A and B in a high-speed mixer, subsequently adding the premixed materials into a double-screw extruder, feeding the part A from a primary feeding opening and feeding the part B from a secondary feeding opening, fusing and extruding at 200-280 DEG C with the rotation speed of the screw extruder at 200-600rpm and the pressure at 2-3MPa, then fusing, extruding and pelleting to obtain the product. Compared with the prior art, through the special toughening agent, PC and processing technologies, the multi-axis impact performance of the polycarbonate composition provided by the invention is improved.

The invention discloses an asphalt polyurethane waterproof coating and a preparation method thereof. The asphalt polyurethane waterproof coating comprises the following main raw materials by weight: 15-25 parts of polyether polyol; 2-10 parts of polyolefin polyol; 2- 6 parts of diisocyanate; and 5 -20 parts of asphalt. According to the invention, hydroxyl-terminated polybutadiene acrylonitrile is used for partially replacing traditional polyether polyol and is reacted with isocyanate, and two chain segments of non-polar butadiene and strong-polar acrylonitrile are introduced into the synthesized polyurethane prepolymer, so that the compatibility of the polyurethane prepolymer and asphalt is greatly enhanced, and the prepared asphalt polyurethane coating has relatively good compatibility and adhesion with an asphalt coiled material.

The invention discloses a preparation method of a hydroxy-functionalized carboxyl-terminated polybutadiene-acrylonitrile copolymer/carbon nanotube conducting composite film. The method comprises the following steps: carrying out in-situ coupling reaction on a hydroxy-functionalized carboxyl-terminated polybutadiene-acrylonitrile copolymer and uniform hydroxy multiwall carbon nanotubes subjected to ultrasonic dispersion to form a polyurethane compound by using hexamethylene diisocyanate, coating a film, and drying at room temperature to obtain the hydroxy-functionalized carboxyl-terminated polybutadiene-acrylonitrile copolymer/carbon nanotube conducting composite film. The method is simple to operate and easy for film formation, and has the advantages of low energy consumption, short operation time and favorable dispersibility of the carbon nanotubes; the obtained conducting composite film can implement detection on benzene and methylbenzene solvent vapor, has the advantages of short response time, high sensitivity and high selectivity, can not cause permanent damage to the conducting film, can implement the ppm-level detection on the benzene vapor, and can implement repeated use.

The invention relates to high-fluidity and high-wear-resistance thermoplastic polyurethane and a preparation method thereof. The thermoplastic polyurethane comprises a component A and a component B, the component A is prepared from the following raw materials in parts by weight: 20 to 40 parts of diisocyanate, 50 to 60 parts of polycaprolactone polyol, 10 to 15 parts of hydroxyl-terminated polybutadiene acrylonitrile, 5 to 10 parts of amine chain extender and 0.01 to 0.05 part of catalyst; the component B is prepared from the following raw materials in parts by weight: 3 to 5 parts of nano silicon dioxide, 4 to 8 parts of carboxymethyl cellulose, 3 to 5 parts of hydroxyl-terminated polysiloxane and 5 to 10 parts of auxiliaries. The thermoplastic polyurethane disclosed by the invention not only has good flowability and wear resistance, but also has relatively high hardness, relatively high elongation at break and excellent comprehensive performance, and the tensile strength is in a relatively high range.

The invention provides polyurethane resin as well as a preparation method and application thereof. The polyurethane resin is prepared from the following raw materials: a combination of polyester polyol, polybutadiene diol (HTPB), polybutadiene acrylonitrile diol (HTBN), a chain extender and aliphatic diisocyanate. Low-polarity HTPB and HTBN are introduced into the preparation raw materials, polyester polyol and aliphatic isocyanate are matched, the overall polarity of the finally obtained polyurethane resin is greatly reduced, the compatibility of the polyurethane resin and a TPR material is promoted, the polyurethane resin and the TPR material can have high binding strength in the injection molding process without adding a binding agent, and the polyurethane resin has important research significance.

The invention discloses electrically conductive die bond adhesive applied to packaging large-size chips, a method for preparing the electrically conductive die bond adhesive and application thereof. The electrically conductive die bond adhesive is made from hydroxyl terminated polybutadiene acrylonitrile, thermoplastic resin, liquid phenolic resin, blocked isocyanate latent curing agents, couplingagents, electric conductivity accelerators and electrically conductive materials. The electrically conductive die bond adhesive, the method and the application have the advantages that electrically conductive adhesive films prepared from the electrically conductive die bond adhesive are excellent in toughness and flexibility, and the electrically conductive die bond adhesive can be applied to packaging the large chips (with the chip sizes larger than or equal to 10*10 mm) and packaging chips with high electric conductivity (the volume resistivity lower than or equal to 0.002 ohm-cm).

The invention discloses a vibrating diaphragm of a sound production device, and the sound production device. The vibrating diaphragm of the sound production device comprises at least one modified ethylene propylene rubber membrane layer, the modified ethylene propylene rubber membrane layer is made of modified ethylene propylene rubber, and the modified ethylene propylene rubber is formed by a cross-linking reaction of base rubber and a reactant, wherein the base rubber is ethylene propylene diene monomer and/or ethylene propylene diene monomer, and the reactant is one or more of polyacrylate, polyethylene-acrylate, polyethylene-vinyl acetate and hydrogenated polybutadiene-acrylonitrile. According to the vibrating diaphragm, the modified ethylene propylene rubber formed by adding the reactant into the ethylene propylene diene monomer and/or the ethylene propylene diene monomer to carry out the crosslinking reaction is adopted as the raw material to prepare the vibrating diaphragm, so that the good rebound resilience and adhesion of the vibrating diaphragm can be ensured, the damping performance of the vibrating diaphragm can be improved, and the acoustic performance of the sound production device is effectively ensured.

A brightness enhancement film suitable for television backlight comprises a brightness enhancement film body, a front coating coated on a front side of the brightness enhancement film body, and a backcoating coated on a back side of the brightness enhancement film body. The brightness enhancement film body comprises, by weight, 2-6 parts of polyamide, 4-5 parts of polybutadiene-acrylonitrile, 2-4parts of polybutyl acrylate, 5-8 parts of ethylene-ethyl acrylate copolymers, 20-25 parts of polyphthalamide, 10-20 parts of polyethylene oxide, 30-40 parts of polyethylene, and 12-18 parts of polyarylester. The brightness enhancement film is specially designed for the television backlight. Appropriate materials are selected for the brightness enhancement film, and the front coating and the backcoating are coated on the front side and the back side respectively so that a brightness enhancement effect of the brightness enhancement film is 5%-10% higher than the effect of a common brightness enhancement film. Simultaneously, the materials are cheap and are easy to get, and cost is saved.

The invention provides a desulfuration method of environmental-friendly liquefied petroleum gas. In the invention, after alcohol amine elution is carried out on the liquefied petroleum gas to remove the sulfureted hydrogen, the membrane separation technique is adopted for desulfuration in the complete absence of alkali, desulfurating agent or catalyst; The membrane separator adopts a plate-and-frame membrane separator and/or a spiral-wound membrane separator, the membrane material is the composite membrane composed of polyvinylidene fluoride basal membrane and telechelic hydroxyl polybutadiene-acrylonitrile membrane. The invention is characterized by high efficiency, environmental protection, easy operation and low operating cost and the like.

The invention discloses copolymerized polycarbonate and a preparation method thereof. The copolymerized polycarbonate comprises a polycarbonate chain segment, a polybutadiene acrylonitrile chain segment, a polysiloxane chain segment, a branched group obtained by reacting with a branching agent, and a cyanophenyl end-capping group obtained by reacting with an end-capping agent. The copolymerized polycarbonate is excellent in intrinsic flame retardant and has good chemical resistance and low-temperature impact resistance.

Urea-terminated polybutadiene polymers and polybutadiene acrylonitrile copolymers useful as both accelerators and tougheners are disclosed for use in epoxy formulations cured with dicyandiamide. The inventive urea-terminated polymers achieve comparable toughness in cured epoxy formulations when compared to that achieved with traditional polymeric or rubber tougheners with little to no change in glass transition temperature. Viscosity improvement and stability over time are also an advantage. A method of preparation emphasizing aspects of reaction stoichiometry is also disclosed.

The invention relates to a floor connecting structural adhesive, which is prepared from the following raw materials: MDI, N330, polyether glycol and hydroxyl polybutadiene acrylonitrile, and the floor connecting structural adhesive also contains inorganic filler, a thixotropic agent, a coupling agent, a mildew preventive and an accelerant. According to the floor connecting structural adhesive and the preparation method thereof, the mildew preventive is added into the structural adhesive in the process of preparing the structural adhesive, so that the finished structural adhesive is higher in mildew resistance and is not easily influenced by a humid environment, and the structure of the structural adhesive is not damaged by mildew due to the fact that the mildew does not breed; the waterproof performance and the structural strength of the structural adhesive can be kept stable after the structural adhesive is used for a long time. By adding hydroxyl polybutadiene acrylonitrile and MDI in the preparation process, the toughness of the structural adhesive can be improved, so that the structural adhesive is prevented from being damaged by thermal expansion and cold contraction at the ground joint. Through the synergistic effect of the polyether glycol and the thixotropic agent, the structural strength and toughness can be further improved.