39results about How to "Reduce thermal aging" patented technology

A new process for producing a fiber-reinforced thermoplastic resin molded product with a high mechanical strength and no heat substantial deterioration of the resin, by an efficient heating without applying shear stress to the fiber-reinforced thermoplastic resin base material and a molded product, for example, a tiptoe core for a safety shoe produced by said process are provided. The fiber-reinforced thermoplastic resin base material P1 in a string form or a tape form is scattered and accumulated in a vessel such as tube 11, and a heating gas passed to the accumulated base material to melt heat, and preferably press by a plunger 15, the base material P1, whereby a molten mass P2 is formed, and then the molten mass P2 is dislocated to a mold to be press-mold. Said base material preferably satisfies the following formula: {fraction (1 / 100<=RHO1 / rho0<= 1 / 2 , wherein rho0 means a density where said base material is scattered and accumulated and rho0 means a true density of said base material.

The invention discloses an environment-friendly lubricating grease with high lubricating performance, comprising the following raw materials in parts by weight: 85 parts of base oil, 20 parts of 12-hydroxystearic acid, 8 parts of lithium hydroxide powder, and 1 part of composite heat stabilizer , 0.4 part of auxiliary heat stabilizer, 0.5 part of carboxymethyl cellulose, 1 part of sodium dodecyl sulfate, 1 part of sodium dodecyl benzene sulfonate, 0.3 part of antioxidant, 0.3 part of graphite and 0.3 part of glycerin; Among them, the base oil is made by mixing epoxidized soybean oil and chlorinated paraffin with a mass ratio of 7:3, the composite heat stabilizer includes peanut oil and tea tree oil with a mass ratio of 2:1, and the auxiliary heat stabilizer includes a mass ratio of 3 :2:2 calcium silicate, zinc oxide and aluminum oxide. At the same time, a preparation method of an environment-friendly lubricating grease with high lubricating performance is provided. The lubricity provided by the invention has high lubricating performance, good biodegradability and little environmental pollution.

The invention discloses a warm mixing hard asphalt mixture and a preparation method thereof. The warm mixing hard asphalt mixture comprises the following components in parts by weight: 4.0-6.0 parts of warm mixing hard asphalt, 1.0-3.0 parts of mineral powder and 91.0-95.0 parts of aggregates. The warm mixing hard asphalt comprises the following components in parts by weight: 0.5-7 parts of a warm mixing agent and 93-99.5 parts of matrix asphalt. The preparation method of the warm mixing agent comprises the following steps: under the effect of a catalyst, reacting macromolecular alkane with halogen simple substances to obtain a midbody; evenly mixing aromatic oil with a complex to obtain an aromatic complex component; and reacting the aromatic complex component and the midbody at a certain temperature to obtain the warm mixing agent used in the invention. The warm mixing hard asphalt used in the warm mixing hard asphalt mixture contains the warm mixing agent, the warm mixing effect can be achieved, the high-temperature performance and low-temperature performance of the asphalt are considered, the generation amount of harmful gas is reduced, the caking property of the asphalt is improved, the heat stability of the asphalt can be improved, and the anti-ageing performance is also improved.

The invention provides warm-mixed colorful synthetic asphalt and a preparation method thereof. The warm-mixed colorful synthetic asphalt is prepared from the following components in parts by mass: 1-7parts of warm mixing agent, 88-97 parts of synthetic asphalt and 2-5 parts of a coloring agent. A preparation method of the warm mixing agent comprises the following steps: firstly, enabling high molecular alkane to react with a halogen element in presence of a first catalyst to obtain an intermediate; evenly mixing first aromatic hydrocarbon oil with a complex to obtain an aromatic hydrocarbon complex component; then, mixing the aromatic hydrocarbon complex component with the intermediate for carrying out a reaction to obtain the warm mixing agent. The warm0mixed colorful synthetic asphalt is not only low in use temperature, but also can improve the heat stability and heat aging resistance of the asphalt, so that colorful asphalt pavement is bright in colorful, and the service life of the colorful asphalt pavement is prolonged.

The invention discloses a warm mix hard asphalt mixture and a preparation method thereof, wherein the warm mix hard asphalt mixture comprises 4.0-6.0 parts of a warm mix hard asphalt, 1.0-3.0 parts of ore powder, and 91.0-95.0 parts of an aggregate, and the warm mix hard asphalt comprises 0.5-7 parts of a warm mix agent and 93-99.5 parts of matrix asphalt. The warm mix agent preparation method comprises: under the effect of a catalyst, carrying out a reaction on a macromolecule alkane and an elemental halogen to obtain an intermediate; carrying out a reaction on an aromatic hydrocarbon oil and a complexing compound under the effect of a catalyst to obtain an aromatic hydrocarbon complexing component; and carrying out a reaction on the aromatic hydrocarbon complexing component and the intermediate at a certain temperature, and aging to obtain the warm mix agent. According to the present invention, the warm mix hard asphalt used in the warm mix hard asphalt mixture contains the warm mix agent, such that the warm mix effect can be provided, the high temperature performance and the low temperature performance of the asphalt are considered, the harmful gas generation is reduced, the adhesion of the asphalt is improved, the thermal stability of the asphalt is improved, and the aging resistance is improved.

The invention provides warm-mixed polymer modified asphalt and a preparation method thereof. The asphalt is prepared from components in parts by mass as follows: 1-7 parts of a warm-mixing agent, 2-5 parts of a polymer, 88-97 parts of substrate asphalt as well as sulfur accounting for 0.01%-0.07% of the total mass of the three components. The warm-mixing agent is prepared with the following method: under the action of a catalyst, high polymer alkane firstly reacts with elementary halogen at a certain temperature and under certain pressure to produce an intermediate; aromatic oil and a complex are uniformly mixed to form an aromatic complex component; then the aromatic complex component reacts with the intermediate at a certain temperature to produce the warm-mixing agent. The warm-mixing agent used in the warm-mixed polymer modified asphalt can have a warm-mixing effect on asphalt, considers high / low-temperature performance of asphalt and can improve the thermal stability of asphalt, improve aging resistance, reduce thermal ageing of asphalt and decrease harmful gas production.

The invention discloses sulfur emulsified asphalt and a preparation method thereof. The sulfur emulsified asphalt is in a water-in-oil type and comprises the following components by weight: 30-97% of matrix asphalt, 0.9-34% of water, 1-6% of emulsifier and 1-30% of sulfur. The preparation method comprises the following steps: the emulsifier is added into the matrix asphalt in a melted state and is uniformly mixed, a certain amount of water is slowly dripped into the matrix asphalt containing the emulsifier and is uniformly mixed, water is dispersed in the asphalt containing the emulsifier in a fine micro-ball state, and then water-in-oil emulsified asphalt is formed; then sulfur is added into the water-in-oil emulsified asphalt and mixed uniformly and has a full reaction with the asphalt to obtain the sulfur emulsified asphalt. The high-temperature stability of the sulfur emulsified asphalt is good, the preparation temperature of the sulfur emulsified asphalt and the mix temperature of an asphalt mixture are low, the anti-track performance of the mixture is good, volatilization of harmful gas and a thermal aging phenomenon of asphalt are reduced, and the sulfur emulsified asphalt and the preparation method are environment-friendly and save energy.