49results about How to "Elongation at break" patented technology

The present invention provides a rubber composition with superior properties with respect to processability, low fuel consumption, complex modulus, and durability, and tires prepared by using the rubber composition. The rubber composition of the present invention comprises: 2 to 2.9 parts by weight of (B) sulfur, 0.6 to 10 parts by weight of (C) at least one compound selected from the group consisting of a cresol resin, a resorcin condensate, and a modified resorcin condensate, and 10 to 55 parts by weight of (D) a carbon black and / or silica, based on 100 parts by weight of (A) a rubber component comprising a natural rubber and / or isoprene rubber and at least two kinds of synthetic rubbers selected from the group consisting of butadiene rubber, modified butadiene rubber, styrene-butadiene rubber, and modified styrene-butadiene rubber. The tire of the present invention is prepared by using the rubber composition.

A novel terminally modified imide oligomer having excellent solubility in organic solvents, excellent solution storage stability, and excellent molding properties such as low melt viscosity. Also, a varnish obtained by dissolving the terminally modified imide oligomer in an organic solvent; a cure product obtained by using the terminally modified imide oligomer and having excellent thermal and mechanical characteristics such as heat resistance, elastic modulus, tensile strength at break and tensile elongation at break; a prepreg; and a fiber-reinforced laminate. The soluble terminally modified imide oligomer is represented by general formula (1). In the formula, R1 and R2 each represents a divalent aromatic diamine residue; R3 and R4 each represents a tetravalent aromatic tetracarboxylic acid residue; R5 and R6 each represents a hydrogen atom or a phenyl group, with R5 or R6 being a phenyl group; m and n satisfy the following relations: m≧1, n≧0, 1≦m+n≦20 and 0.05≦m / (m+n)≦1; and the repeating units may be arranged in blocks or randomly.

The present invention has its object to provide a transparent curable composition which may be prepared as a one package formulation, and which is excellent in strength, elongation at break, weather resistance, and adhesiveness of the resultant cured product.In addition, the present invention provides a curable composition which comprises 100 parts by weight of a vinyl polymer (I) the main chain of which is the product of living radical polymerization and which contains a crosslinkable silyl group, and 1 to 200 parts by weight of a micronized hydrophobic silica (II). Furthermore, the present invention also provides a curable composition which comprises 100 parts by weight of a vinyl polymer (I) the main chain of which is the product of living radical polymerization and which contains at least one crosslinkable silyl group, and 1 to 200 parts by weight of a graft copolymer (III) obtained by graft polymerization of a crosslinkable rubber-like acrylic ester polymer and a vinyl monomer.

The present technology provides a rubber composition containing a diene rubber including a styrene-butadiene copolymer component including at least one type of styrene-butadiene copolymer and a reinforcing filler. The bonded styrene content is from 5 to 50 wt. %. The total amount of styrene of an ozone decomposed component S1 including one styrene-derived unit and an ozone decomposed component S1V1 including one styrene-derived unit and one 1,2-bonded butadiene-derived unit is less than 80 wt. % of the amount of bonded styrene. The total amount of styrene of the decomposed component S1V1 is less than 10 wt. % of the amount of bonded styrene. The integrated intensity of an ozone decomposed component S1V2 including one styrene-derived unit and two 1,2-bonded butadiene-derived units is less than 15% of the integrated intensity of all decomposed components including styrene-derived units. The vinyl content of a butadiene portion is not less than 50%.

The invention relates to a preparation method of a natural eucommia wood-plastic composite material, which relates to a preparation method of the composite material. The protein contained in the eucommia wood of the present invention is similar to most foods, and various amino acids and mineral elements necessary for the human body have been detected. At the same time, eucommia wood itself contains a lot of lignin, and the composite material made by filling pure polypropylene and other thermoplastic resins with natural eucommia wood powder and adding additives has certain hardness, tensile strength, Vicat softening temperature and density, and Has a certain elongation at break. Compared with traditional materials, wood-plastic materials have unique advantages: they can release some beneficial elements to the human body, have no defects of wood products (knots, oblique grains, decay, etc.), have a wood-like appearance, and are harder than plastics. Molding and weather resistance, etc. This wood-plastic product has a wide range of applications, such as wall panel decoration, floor, fence, indoor tables and chairs, automotive interior parts, etc.

The invention relates to a combined fast blocking device based on an arched roadway, which includes a temperature-sensitive airbag, a combined bracket and an automatic inflation system, the combined bracket is arranged inside the temperature-sensitive airbag to support and fix the temperature-sensitive airbag, the temperature-sensitive airbag and the automatic inflation system connection. The temperature-sensing airbag is an airbag with an arched top, and its material can sense the surrounding temperature, and present different colors according to different surrounding ambient temperatures to achieve multi-stage color change. The automatic inflation system includes a temperature sensor, a pressure sensor, a computer, an inflation device, an inflation solenoid valve, and an exhaust solenoid valve. The invention has a simple structure, can realize fast assembly and disassembly, and can realize automatic inflation and deflation according to the set temperature and pressure.