48results about How to "Improve cold and heat resistance" patented technology

The invention discloses a nano-ceramic imitation coating. The raw materials for its preparation are composed of the following components by weight percentage: 35-39 parts of nano-titanium dioxide, 33-48 parts of nano-calcium oxide powder, 25-35 parts of acrylic adhesive, and 5-35 parts of citric acid. 8 parts, 9~12 parts of dioctyl phthalate, 1~2 parts of nano-aluminum silicate powder, 2~5 parts of lignin, 0.1~0.2 parts of ethylenediamine, 0.2~0.5 parts of polyaluminum chloride, Foam agent 0.2~0.4 parts, water 50~80 parts. Compared with the prior art, the nano-ceramic imitation paint provided by the invention is greatly enhanced in cold and heat resistance, salt spray resistance, water resistance and human aging.

The invention provides a transmission belt that can suppress lowering in transmission efficiency and has improved durability. A rubber layer adhered to core wires is formed to have a durometer hardness (shore A) of not less than 72 and not more than 85, or have a tensile stress of not less than 0.5 MPa and not more than 1.7 MPa when stretched 10% in the belt longitudinal direction at 25° C., and the rubber layer is formed to have a weight increase of 90% or less after immersed in light oil for 48 hours at 25° C. or have a weight increase of 80% or less after immersed in toluene for 48 hours at 25° C. Alternatively, the rubber layer adhered to the core wires is formed to have a storage modulus of not less than 10 MPa and not more than 50 MPa and a tan δ of not more than 0.15 as measured by dynamic viscoelasticity measurement under conditions at a static load of 3 kgf / cm2, a dynamic strain of 0.4%, a frequency of 10 Hz and a temperature of 25° C. in a tensile mode in a belt longitudinal direction.

The invention provides a concrete decorating plate and a preparation method thereof. The concrete decorating plate comprises a concrete structure layer, an interface layer and a decorating layer. Raw materials of the concrete structure layer comprise ultrahigh strength concrete and phase change and energy storage particles, and the mass ratio of the phase change and energy storage particles to the ultrahigh strength concrete is 2%-10%; the interface layer is of a net-shaped structure and is arranged on the concrete structure layer; the decorating layer is arranged on the interface layer and the concrete structure layer, and raw materials of the decorating layer comprise, by weight, 300-550 parts of cement, 700-950 parts of 20-40-mesh quartz sand, 240-310 parts of 40-70-mesh quartz sand, 15-22 parts of a water reducing agent, 0.1-0.7 part of cellulose ether and 190-240 parts of water. According to the concrete decorating plate, the concrete structure, the interface layer and the decorating layer matched with the concrete structure layer and the interface layer are adopted, the strength of the concrete decorating plate is improved, and then the thickness of the concrete decorating plate is decreased; the phase change and energy storage particles are added into concrete, phase change heat absorption or heat release is generated by the phase change and energy storage particles, the cold and heat resistance of the concrete decorating plate is improved, an environment temperature adjusting effect is achieved, and then the durability of the concrete decorating plate is improved.

The purpose of the present invention is to provide a novel compound which is useful as a plasticizer that has improved heat resistance and cold resistance, while having good inherent plasticization performance as a plasticizer, or which is useful as a stabilizer for chlorine-containing resins. The inventors have found that a novel epoxycyclohexane dicarboxylic acid diester having a specific structure, which has an epoxy group in the molecular structure and has improved cold resistance and heat resistance, enables the achievement of the above-described purpose, and have been able to achieve a novel compound that is useful as a plasticizer and as a stabilizer.