41results about How to "Improve heat aging" patented technology

To improve the handlability and safety of a perchlorate solution used as a stabilizer for chlorine-containing resins. This invention provides a perchlorate solution of improved handlablity and safety and a method for heat-stabilizing chlorine-containing resin compositions by adding (a) 0.004 to 10 parts by weight of a perchlorate solution containing 1 to 60 % by weight of perchlorate, 5 to 50 % by weight of water-soluble organic solvent and 20 to 94 % by weight of water, and (b) 0.001 to 10 parts by weight of at least one silicate compound represented by the general formula (I) to 100 parts by weight of a chlorine-containing resin: M(O)a nSiO2mH2O (I) in which M is at least one metal selected from alkaline earth metals and aluminum, a is 1 when M is an alkaline earth metal and 3 / 2 where M is aluminum, n is from 1 to 5, and m is any positive integer.

The present invention relates to filled, impact-modified polycarbonate compositions containingA) aromatic polycarbonate and / or aromatic polyester carbonate,B) a first graft polymer ofB.1 from 0.1 to 30 wt. % of at least one vinyl monomer onB.2 from 99.9 to 70 wt. % of one or more graft bases having glass transition temperatures <10° C., the graft base consisting of at least 50 wt. % of a silicone rubber,C) a second graft polymer, which is different from component B, ofC.1 from 5 to 95 wt. % of at least one vinyl monomer onC.2 from 95 to 5 wt. % of one or more graft bases having glass transition temperatures <10° C., the graft base consisting of at least 50 wt. % of an EPDM rubber,D) rubber-free vinyl (co)polymer and / or polyalkylene terephthalate, andE) polymer additives,wherein components B and C are present in a ratio (B:C) in the range from 20:80 to 80:20 andwherein the composition containsfrom 10 to 92 parts by weight of component A,from 8 to 90 parts by weight of the sum of components B and C,from 0 to 35 parts by weight of component D, andfrom 0 to 30 parts by weight of component E,which have good stability to ageing and which are distinguished by high low-temperature strength and by low gloss, to a process for their production and to their use in the production of molded bodies.

The invention discloses a manufacturing method for a sample for researching an inter-turn insulation aging process of a dry-type air-core reactor and a flake sample, and relates to a flake material sample and the manufacturing method. The method comprises the following steps: manufacturing flake polyester films; wiping the surfaces of the flake polyester films with alcohol, and performing drying treatment; forming a square opening and an outflow opening, and adhering two flake polyester films tightly without air bubbles; adding epoxy resin into the square opening dropwise; adhering the flake polyester films to the upper surface of the square opening; performing pressurizing and heating treatment on a composite insulating material sample; manufacturing a round sample. According to the sample, three square flake polyester films are adhered tightly; the square opening is formed in the central position of the second square flake polyester film, and the overflow opening is formed in the side of the second square flake polyester film, and an epoxy resin filling structure body is arranged in the square opening. The sample is applicable to various aging tests of thermal aging, electric aging, moisturizing, and mechanical vibration; space charge test and infrared spectral measurement can be performed on the sample.