135 results about "Polymethylmethacrylate resin" patented technology

It is an object of the present invention to provide an improved orthopedic implant system with satisfied biological, mechanical and morphological compatibilities. Solid metal femoral stem (entirely or partially) and solid metal acetabular head (entirely or partially) are covered with diffusion-bonded foamed-shaped sheet made of commercially pure titanium or titanium alloy(s). The open-cells in said foamed metal sheet are impregnated with biocompatible polymethyl methacrylate resin cement, which is reinforced with selected oxides (e.g., alumina, magnesia, zirconia, or a combination of these oxides) along with an application of a small amount of a metal primer agent.

Disclosed herein is a flame retardant thermoplastic resin composition that has superior scratch resistance and mechanical properties, satisfying requirements for the appearance of housing materials resulting from a recent increase in volume of electrical and electronic products, and that contains a phosphorus-based flame-retarding agent, satisfying requirements for fire safety and prevention of environmental problems. The resin composition with scratch resistance comprises a base resin comprising (A) about 30 to about 90 parts by weight of a polycarbonate resin, (B) about 15 to about 50 parts by weight of a polymethylmethacrylate resin and (C) about 5 to about 50 parts by weight of a polyethylene terephthalate-based resin, and (D) about 5 to about 30 parts by weight of a phosphorus-based flame-retarding agent based on 100 parts by weight of the base resin. The composition may further comprise about 1 to about 30 parts by weight of an impact modifier based on 100 parts by weight of the base resin.

The invention provides a high-stability microcapsule used for asphalt self-repair. The microcapsule is characterized in that the microcapsule adopts polymers as wall materials and commercially available asphalt regenerant liquid as a core material; the mass ratio of the wall materials to the core material is (3:1)-(1:3); the polymers used as wall materials are melamine resin, methyl modified melamine resin, phenolic resin, epoxy resin, unsaturated polyester resin and polymethyl methacrylate resin; the core material is an asphalt regenerant, is oily liquid capable of dissolving aged asphalt and has the function of regenerating aged asphalt; after the microcapsule is mixed with molten asphalt at 200 DEG C for one hour, 95% of microcapsule is in a complete state and does not crack; the microcapsule is mixed with asphalt to generate microcracks in the asphalt aging process to crack the microcapsule and the asphalt regenerant is released to self-repair aged asphalt, thus greatly prolonging the service life of asphalt.

A PMMA resin containing an impact modifier capsulated therein, said impact modifier comprising a core of a glass polymer, an intermediate layer of a rubber copolymer grafted to the core and an outer layer of a glass polymer grafted to the intermediate layer, the impact modified PMMA resin having a granular shape, the amount of the core being 5 to 20 weight %, the amount of the intermediate layer being 10 to 70 weight % and the amount of the outer layer being 25 to 85 weight %, the intermediate of the rubber copolymer being a copolymer of at least one monomer selected from the group consisting of butylacrylate and butadiene and a monomer of styrene, the outer layer of a glass polymer containing a chain transfer agent.

An easy adhesion film for a transparent conductive thin film comprises a transparent polymer film and an easy adhesion layer formed on the transparent polymer film, wherein the easy adhesion layer comprises at least an ionizing radiation curable resin binder, a (meth)acrylate copolymer binder and polymethyl methacrylate resin particles. The easy adhesion film has high durability, transparency and anti-Newton ring property when provided with a transparent conductive thin film.

The invention relates to a preparation method of phosphorus-containing flame-retardant polymethyl methacrylate resin. A formula for preparing the phosphorus-containing flame-retardant polymethyl methacrylate resin comprises the following components by weight percent: 17.92 to 22.65 percent of tri((6-oxo-6H-dibenz [c,e][1,2] oxaphosphorin-6-yl)methyl) phosphate, 78.16 to 82.39 percent of methyl methacrylate and 0.16 to 0.76 percent of benzoperoxide. The preparation method comprises the following steps: adding a formula amount of methyl methacrylate, tri((6-oxo-6H-dibenz [c,e][1,2] oxaphosphorin-6-yl)methyl) phosphate and initiator benzoperoxide into a reaction container, stirring about 52 min at 85.2 DEG C, allowing the system to be viscous, then pouring a prepolymer into a mold, cooling to about 40 DEG C, performing the heat insulation for 6h, then heating to 80 DEG C, and performing the heat insulation for 12h to obtain the flame-retardant polymethyl methacrylate resin.

The invention relates to a preparation method and a self-repair method of a self-repairable polymethylmethacrylate resin film. The preparation method solves the problem that polymethylmethacrylate produces cracks and is damaged easily in use. The preparation method comprises the following steps of 1, preparing a polymethylmethacrylate resin solution, 2, preparing a nano-particle/polymethylmethacrylate mixed solution, and 3, preparing the self-repairable polymethylmethacrylate resin film. The self-repair method has a wide repairable-resin selection scope and has stronger popularization. The preparation method can be used for preparation of a self-repairable polymethylmethacrylate resin film and the self-repair method is suitable for self-repair of a damaged polymethylmethacrylate resin film.

The invention provides a preparation method for polymethyl methacrylate resin with high heat resistance, and belongs to the field of high polymer material preparation methods. The preparation method is used for solving the problems that an existing preparation method for the polymethyl methacrylate resin is complex in post-treatment process, the solvent is toxic and the product performances are poor. According to the preparation method disclosed by the invention, continuous solution polymerization is adopted, alcohol is taken as a solvent, monomer with reactive hydrogen and methyl methacrylate are polymerized into binary copolymer at a high temperature, and a purpose of improving the heat resistance of the polymethyl methacrylate resin is improved by controlling a ratio of charge and a polymerization temperature of the polymethyl methacrylate monomer and the acrylamide monomer. According to the experimental results, the glass transition temperature Tg of the polymethyl methacrylate resin prepared by the preparation method can reach 173 DEG C, the thermal degradation initial temperature is over 301 DEG C, the obvious thermal degradation temperature is up to 401 DEG C and the molecular weight distribution is about 1.5.

The invention provides an infrared ray-penetrable polymethyl methacrylate composition. The infrared ray-penetrable polymethyl methacrylate composition comprises polymethyl methacrylate, an infrared ray penetration promoter and a surface hardness modifier. The infrared ray-penetrable polymethyl methacrylate composition has high penetration rates of infrared rays having different wavelengths, has the infrared ray penetration rates more than 80% and a visible light penetration rate less than 1%, retains excellent mechanical properties, thermal properties and environmental suitability of polymethyl methacrylate, and has a low manufacturing cost.

The invention discloses a PMMA/ASA alloy material with high heat resistance and high black brightness and a preparation method and application thereof. The PMMA/ASA alloy material is prepared from thefollowing components in parts by weight: polymethyl methacrylate (PMMA) resin, acrylonitrile-styrene-acrylate copolymer (ASA rubber powder), a heat-resisting agent, an antioxidant, a light stabilizer, an anti-scraping agent and a coloring agent. According to the PMMA/ASA alloy material prepared through the method, HDT can reach 95 DEG C or above and is improved by 20 DEG C or above compared withmature materials on the market, the surface gloss is basically not reduced, the blackness L value is 22.5, and the effect of piano black can be achieved. Meanwhile, the scratch resistance is also obviously improved, and a five-finger scratch test and a surface wear resistance test can be passed.

The invention provides an anti-skid colored paving material for roads, and a preparation method and a construction process of the paving materials. The anti-skid colored paving material for roads comprises the following components in parts by weight: 40-50 parts of polymethyl methacrylate resin, 10-20 parts of calcium carbonate, 1-5 parts of nano silicon dioxide, 2-5 parts of inorganic pigment, 5-15 parts of bauxite and 5-8 parts of quartz sand. The anti-skid colored paving material for roads provided by the invention has a shortened hardening time, and the bauxite with excellent acid resistance, alkali resistance and chemical resistance is used as the main material, so that an original working procedure of additional removal of anti-skid aggregates can be omitted, and the problems that the aggregate easily peels off from the paving material and uniform spreading is difficult due to uneven aggregate shape existed in the additional removal of the aggregates can be solved. Pre-mixing iscarried out for coating the aggregate with the quartz sand, the aggregate does not fall off easily, the drying time is faster, the traffic condition can be reached only in one hour, and the traffic pressure is greatly reduced.

The invention provides a transparent rubber modified polymethyl methacrylate resin composition, and belongs to the technical field of high polymer materials. The composition comprises 12-23.14 parts of rubber copolymer and 48-36.86 parts of PMMA matrix resin according to weight parts, wherein the rubber copolymer comprises 20-80 parts of nuclear copolymer and 80-20 parts of shell polymer according to weight parts; the nuclear copolymer comprises 60-75 parts of a butyl acrylate monomer, 20-40 parts of a butadiene monomer and 0-10 parts of a styrene monomer according to weight parts; the shell polymer is polymethyl methacrylate. The invention further provides a preparation method for the transparent rubber modified polymethyl methacrylate resin. The transparent resin is obtained through adjustment of biphase refraction index, so that the resin has better transparency and toughness.

Provided are: a polycarbonate resin composition, including, with respect to 100 parts by mass of a glass fiber-containing resin component formed of 60 to 90 mass % of (A) an aromatic polycarbonate resin, 5 to 20 mass % of (B) such glass fibers that a difference in refractive index between the aromatic polycarbonate resin and each of the fibers is 0.02 or less, and 5 to 25 mass % of (C) a polymethyl methacrylate resin, (D) 0.005 to 1.5 parts by mass of (D-1) glossy particles having an average particle diameter of 10 μm or more and less than 60 μm, and 0.005 to 5 parts by mass of (D-2) glossy particles having an average particle diameter of 60 to 300 μm, and 0.05 to 0.4 part by mass of (E) titanium oxide having an average particle diameter of 0.05 to 3 μm; a resin molded article obtained by molding the resin composition; and a method of producing the resin molded article. The polycarbonate resin composition is capable of providing a molded article having reduced visibility of a weld line fusion portion, no visible difference in luminosity between the left and right sides of a weld line, and a good metallic or galactic appearance, the composition being excellent in heat resistance and mechanical properties.

The invention discloses a wear-bionic nano-ceramic composite artificial tooth, which comprises 12 to 15 layers of nano-ceramic/resin composite material layers covering on lap ridge parts of the artificial tooth made from polymethyl methacrylate resin, wherein the content of the nano-ceramic material in the innermost first composite material layer is 10 percent, the content of the nano-ceramic material in the composite material layers from the inside to the outside increases gradually, and the content of the nano-ceramic material in the outermost layer is 30 percent; and the thickness of each layer of the composite material layers at an occlusal surface is between 180 and 220 mu m. The artificial tooth is well combined with a base tray, has similar wear resistance to a natural tooth, and not only has the characteristics of beautiful appearance and wear resistance of a ceramic tooth, but also has small wear to the natural tooth like a resin tooth. The clinical service life of the artificial tooth of the invention is long.

The invention discloses a rubber particle discontinuous phase and transparent rubber modified styrene resin compound, which is characterized by the following: forming rubber particle discontinuous phase with rubber copolymer; comprising 10-50 rubber particle discontinuous phase and 90-50 wt base blending copolymer; setting the rubber particle discontinuous phase as 20-80 wt core layer copolymer and 80-20 wt shell layer copolymer; setting the core layer copolymer as 5-50 wt styrene monomer and 95-50 wt diene monomer; setting the shell layer copolymer as 10-70 wt styrene monomer and 90-30 wt (metyl group) acrylic ester monomer; setting the base blending copolymer as 20-80 wt polymethyl methacryate resin and 80-20 wt styrene-acrylonitrile copolymer resin; setting the grain diameter of the core layer copolymer at 100-1000nm. This product possesses good transparency, shockproof property and chemical medicine resistance property.

The invention relates to a preparation method of crosslinked polymethyl methacrylate resin microspheres with narrow particle size distribution. The technical scheme is as follows: thoroughly mixing methyl methacrylate monomer, crosslinking agent, pore-forming agent and initiator, adding the mixture into a dispersant-surfactant water solution, heating while stirring to react, pouring out the supernatant to obtain a mixed solution containing the polymethyl methacrylate resin microspheres, washing with water, and eluting with ethyl acetate to obtain the polymethyl methacrylate resin microspheres. The particle sizes of the methyl-methacrylate resin microspheres prepared by the method are adjustable within the range of 20-350 micrometers; the sphericity is higher than 95%; and the preparation method can effectively enhance the yield of the methyl-methacrylate resin microspheres by heating once, is simple to operate, uses economical dispersant, surfactant, solvent and the like, and can easily implement industrialized mass production.

The invention relates to a polycarbonate composition and a preparation method thereof. The polycarbonate composition is prepared from, by weight, 52-72 parts of polycarbonate resin (PC), 20-30 parts of polymethyl methacrylate resin (PMMA), 8-18 parts of a methyl methacrylate-phenyl methacrylate copolymer (PMPA), 2-8 parts of a styrene-acrylonitrile-glycidyl methacrylate copolymer (SAG), 2-8 partsof a toughening agent, 0.5-4 parts of an anti-scratch agent, 0.1-1 part of an antioxidant and 0.1-1 part of a lubricant. The prepared polycarbonate composition has the advantages of high toughness, high gloss and excellent scratch resistance, and achieves a good application effect and prospect in the fields of automobiles, electronic appliances, instruments and meters, packaging and the like.

The invention discloses a solderable low-temperature curing type functional silver paste and a preparation method thereof. The composition mass percent of the solderable low-temperature curing type functional silver paste is: 85-95wt% of silver powder and 5-15wt% of organic carrier, wherein the organic carrier comprises 75-90wt% of modified polymethyl methacrylate PMMA resin, 0-15wt% of organic solvent, 5-20wt% of cross-linking agent and 5-15wt% of auxiliary agent. A functional silver paste is prepared from silver powder, modified polymethyl methacrylate PMMA resin, organic solvent, cross-linking agent and auxiliary agent, and the prepared functional silver paste can meet the solderability requirements of wave soldering, reflow soldering, gold soldering and indium soldering after being cured at low temperature. The invention provides a solderable low-temperature curing functional silver paste and a preparation method thereof for assembling high-density and high-reliability electronic products in the field of information electronics, and has wide application prospect and market value.

The invention discloses a high-solid low-viscosity laser alumite imaging layer coating and a preparation method thereof. The high-solid low-viscosity laser alumite imaging layer coating is prepared from the following raw materials in parts by weight: 10-30 parts of polymethyl methacrylate resin, 5-10 parts of styrene-maleic anhydride resin, 1-5 parts of cellulose acetate butyrate, 5-10 parts of isobornyl methacrylate, 1-5 parts of fluorine-containing polyacrylate, 50-70 parts of butanone, 1-8 parts of n-propyl acetate and 1-5 parts of propylene glycol ether. Polymer monomers contained in the formula of the imaging layer coating are of special structures or functional groups, and meanwhile comprehensive performance of polymer is taken into consideration; under the condition that the performance, such as heat resistance, of the polymer coating is not influenced, the viscosity of polymer solution can be obviously reduced, the using amount of an organic solvent is reduced, the leveling property of a coating film in the coating process is improved, and the coating film also has relatively low surface energy, so that acting force between a laser operating plate and a polymer coating layer in a high-temperature mold pressing process is reduced to achieve an effect of preventing plate adhesion.

The invention discloses an ABS (acrylonitrile-butadiene-styrene) composite material, which is prepared from 50-80 parts by weight of acrylonitrile-butadiene-styrene (ABS) resin, 25-65 parts by weight of polymethyl methacrylate (PMMA) and 0.1-10 parts by weight of an ethylene-methacrylate (EMA) copolymer. The invention also discloses a preparation method of the ABS composite material. The ABS composite material prepared by the invention has good glossiness, interfacial compatibility and toughness. The adding of EMA makes the ABS and PMMA systems uniformly distributed. Meanwhile, the EMA is spherically dispersed in the ABS composite system, plays a stress concentration role, and endows the ABS composite material with good toughness. Thus, the ABS composite material can be widely used in various molding products, especially in products with glossiness and scratch resistance requirements in the instrument and meter industry.