85results about How to "Improve thermal storage stability" patented technology

The invention discloses an SBS (styrene-butadiene-styrene) modified asphalt with stable thermal storage, which has significantly improved thermal storage stability and has good high-temperature and low-temperature road performance. The SBS modified asphalt is prepared by the step of adding a styrene-butadiene-styrene block copolymer, a stabilizer, a solubilizer and polyphosphate into base asphalt, wherein the weight of the styrene-butadiene-styrene block copolymer is 2-6% of the weight of the base asphalt, the weight of the stabilizer is 0.1-0.2% of the weight of the base asphalt, the weight of the solubilizer is 1-5% of the weight of the base asphalt, and the weight of polyphosphate is 0.1-1% of the weight of the base asphalt. The preparation process of the SBS modified asphalt comprises the following steps: (1) collecting base asphalt, and heating to 175-185 DEG C; (2) adding aromatic oil, and stirring for 40-80 seconds; (3) adding styrene-butadiene-styrene block copolymer, and shearing for 8-12 minutes; (4) adding sulfur powder, and shearing for 8-12 minutes; and (5) adding polyphosphate, and developing under stirring for 100-140 minutes to obtain the SBS modified asphalt with stable thermal storage.

The invention relates to composite high-viscosity modified asphalt and a preparation method thereof. The raw material comprises the following components by weight percent: 84-88% of heavy duty bitumen and 12-16% of modified compounds. The method comprises the following steps: mixing SBS, desulfurized colloidal particles and a compatilizer containing an epoxy group to prepare a modified compound; preparing modified particles after mechanically pelletizing; adding the modified particles to asphalt at 170-190 DEG C; melting and refining compound particles after shearing at a high speed for 30-60 minutes on a high-speed mixing emulsifier; transferring the sheared asphalt to a high-speed disperser, and agitating to obtain the composite high-viscosity modified asphalt. The composite high-viscosity modified asphalt prepared by using the method has the characteristics of stable heat storage, and excellent high and low temperature properties, has good economic benefits and environmental effects because of use of waste rubber, and is free of sulphur as a stabilizer, the construction viscosity can be reduced, the construction environment can be improved, and the problem that incompatible asphalt is difficult to stabilize is solved.

The invention discloses a hyperbranched resin pigment dispersant. The hyperbranched resin pigment dispersant possesses a hyperbranched structure, and following functional groups: a, hydroxyl; b, oxethyl (-OC2H4-), and c, hydrophobic carbon chains containing 5 to 18 carbon atoms. The hyperbranched resin pigment dispersant is capable of separating and dispersing pigments, strong anchoring effect with pigment can be achieved, compatibility of pigment with main resin is improved, color paste paint forming stability is improved, chromatic aberration is reduced, and the hyperbranched resin pigment dispersant can be applied to aqueous systems.

The invention discloses an SBR (styrene-butadiene rubber) modified asphalt and a preparation method thereof, and belong to the technical field of asphalt modification. Raw materials of the SBR modified asphalt comprise, by mass, 80-84.5% of matrix asphalt, 12-15% of aromatic oil and 3.5-5% of an SBR asphalt modifier, wherein raw materials of the SBR asphalt modifier comprise, by weight, 100 partsof a modified SBR emulsion (by dry rubber), 0.1-1 part of an antioxidant, 5-10 parts of an isolating agent, 3-6 parts of a dicyandiamide-formaldehyde condensate and 2-6 parts of potassium aluminum sulfate. The preparation method comprises the following steps: heating the matrix asphalt until melting, adding the aromatic oil and the SBR asphalt modifier, and shearing and swelling the obtained mixture to obtain the SBR modified asphalt. The SBR modified asphalt has good low temperature performances, ductility and bonding property, and has greatly improved viscosity, high temperature performancesand anti-aging property.

The invention provides an odor-free high-viscosity asphalt composition for a water permeable pavement. The asphalt composition is prepared from the following components in parts by weight: 80-88 partsof asphalt, 12-15 parts of a high-viscosity modifier, 0.2-2 parts of an odor inhibitor, 0.2-1 part of an interface activating agent and 0.2-0.5 part of a stabilizing agent. According to the odor-freehigh-viscosity asphalt composition provided by the invention, the generation and volatilization of the asphalt gas such as H2S, SO2, NOx and the like in asphalt production and construction processescan be reduced through the action of the odor inhibitor and the interface activating agent, so that a remarkable odor removal effect is achieved, the asphalt performance does not change obviously, andthe environmental protection and health of personnel are facilitated. The invention also provides a preparation method of the odor-free high-viscosity asphalt composition.

The invention discloses chemically-modified asphalt cement which is prepared from the following raw materials in parts by weight: 100 parts of matrix asphalt, 0.8-1.8 parts of an RET asphalt modifier and 0.2-0.4 part of polyphosphoric acid. In addition, the invention further discloses a preparation method of the chemically-modified asphalt cement. The method comprises the following steps: heating the matrix asphalt to 175-185 DEG C, then adding the RET asphalt modifier into the matrix asphalt, uniformly stirring, finally adding the polyphosphoric acid, and continuously stirring uniformly so as to obtain the chemically-modified asphalt cement. The chemically-modified asphalt cement disclosed by the invention is simple in production process, relatively low in production cost and good in thermal storage stability.

The invention discloses a terminal carboxyl group SBS, which has an epoxy ring opening flexible bond, an ester bond and a terminal carboxyl group and other structures. The preparation method of the terminal carboxyl group SBS is also disclosed, and active anionic SBS block polymer is prepared by using an anionic polymerization method; ring opening reaction is carried out on the anionic SBS block polymer and an epoxy hydrocarbon compound to obtain active oxygen anion SBS block polymer; terminal capping reaction is carried out on the active oxygen anion SBS block polymer and an acid anhydride compound; after the terminal capping reaction is finished, the terminal carboxyl group SBS is obtained after termination and post-treatment. Besides, the invention also discloses the application of theterminal carboxyl group SBS to asphalt modification. The terminal carboxyl group SBS can obviously improve the comprehensive performance of the asphalt and reduce a segregation value, thereby improving the transportation storage stability of modified asphalt. Besides, the preparation method of the terminal carboxyl group SBS is simple and is easy in industrialized implementation.

The present invention discloses an amine modified hyper-branched hydroxyl polymer, and applications of the amine modified hyper-branched hydroxyl polymer in a coating material rapid drying and pigment dispersion system. According to the present invention, the amine modified hyper-branched hydroxyl polymer resin is introduced into the coating material composition, such that the paint film drying time can be shortened, the cross-linking density of the coating can be improved, and the hardness, the scrub resistance and the chemical corrosion resistance of the paint film can be increased; with the application of the amine modified hyper-branched resin in the pigment paste system, the pigment can be effectively infiltrated and dispersed, and the fineness requirement can be met after grinding for a short time; and with the application of the pigment paste system containing the amine modified hyper-branched resin in the finished product paint, the hardness is high, the thermal storage stability and the room temperature storage stability are good, and the precipitation and the flooding of the finished product paint can be effectively slowed.

The invention discloses an SBS-modified asphalt stabilizing agent.The SBS-modified asphalt stabilizing agent is prepared from, by weight, 20-30 parts of a vulcanization accelerator TMTD, 10-15 parts of stearic acid 1801, 10-20 parts of an antioxidant 2246, 20-30 parts of sulphur, 10-15 parts of a heat stabilizer and 10-15 parts of a light stabilizer.After SBS and asphalt are mixed and milled under the action of a shear colloid mill, the SBS-modified asphalt stabilizing agent is added, and stirring is performed for 1.5-2 hours at the temperature of 175 DEG C-185 DEG C.The SBS-modified asphalt stabilizing agent can promote compatibility of the SBS and the asphalt substrate and decrease the adding dosage of the SBS, can improve the heat storage stability of the SBS-modified asphalt to prevent separation from occurring and can increase the content of aromatic ingredients and increase the compatibility rate of the asphalt substrate and the SBS.

The invention discloses high weatherability composite modified asphalt for a high-speed railway asphalt concrete waterproof sealing layer. The high weatherability composite modified asphalt is prepared from the following components in percentage by weight: 70% to 79.8% of matrix asphalt, 15% to 20% of a modified composite, 5% to 10% of a component modifier, and 0.2 to 0.4% of a crosslinking agent,wherein the modified composite comprises a styrene-butadiene-styrol copolymer, that is, SBS copolymer, regenerated colloidal particles, and a mixture of an anti-aging agent and an interface enhancingagent. According to the high weatherability composite modified asphalt for the high-speed railway asphalt concrete waterproof sealing layer, (1) the composite modifier prepared by using the SBS copolymer, the regenerated colloidal particles, the anti-aging agent, and the interface enhancing agent can comprehensively improve stability, aging, and weatherability of the matrix asphalt, waste tires are fully utilized, and the cost is lowered, so that a modified asphalt cementing agent is more suitable for the high-speed railway waterproof sealing layer; and (2) according to the method, the composite modifiers are firstly prepared and then granulated, the interface enhancing agent is beneficial to the association between a modifier and the matrix asphalt, micro-nano dispersion of modifier molecules can be realized, the use amount of rubber is increased, and tire pollution is reduced.

The invention provides an odorless high-viscosity asphalt modifier. The odorless high-viscosity asphalt modifier is prepared from the following components in parts by weight: 4-7 parts of thermoplastic elastomer, 4-8 parts of rubber polymer, 5-8 parts of thermoplastic resin, 0.05-0.2 part of odor inhibitor and 0.1-0.5 part of surfactant. The invention also provides an asphalt mixture of the odorless high-viscosity asphalt modifier. According to the odorless high-viscosity asphalt modifier disclosed by the invention, the odorless high-viscosity asphalt modifier is prepared under the action of the odor inhibitor and the interfacial agent; the high-viscosity asphalt mixture is directly prepared, so that the odor in the production process of the high-viscosity asphalt mixture can be eliminated, the generation and volatilization of asphalt flue gas such as H2S, SO2 and NOX in the production and construction processes of asphalt are remarkably reduced, a remarkable odor eliminating effect isachieved, the performance of the asphalt mixture is not obviously changed, and the environmental protection and the body health of personnel are facilitated.

The invention provides an anti-aging agent and anti-aging asphalt. The anti-aging agent comprises the following components in parts by weight: 10-20 parts of nano carbon black, 40-60 parts of p-phenylenediamine, 5-15 parts of p-cresol, 0-10 parts of a petroleum resin and 30-40 parts of high-aromatic hydrocarbon oil. The anti-aging asphalt provided by the invention comprises asphalt and the anti-aging agent, and the content of the anti-aging agent is 0.5-1.0 wt%. By adopting the anti-aging agent provided by the invention, thermal oxidation aging of asphalt can be effectively inhibited, so thatthe thermal aging resistance of the asphalt is improved, and the storage stability of the asphalt can be improved.

The invention provides a RS2000 anti-rutting modified asphalt processing technic which belongs to the road and bridge engineering technique field, relates to a road asphalt processing technique. The technique uses a technical scheme as follows: the RS2000 anti-rutting modified asphalt is prepared by adding RS2000 modifying agent to basic asphalt which has characteristics that: adding 8% modifying agent into the basic asphalt evenly, heating to 160-170 DEG. C, and stirring 30 minutes with a stirring speed 350 revolutions per minute. The technique also can use a technical scheme as follows: adding RS2000 modifying agent into the basic asphalt which has characteristics of: adding 8% RS2000 modifying agent into the basic asphalt with 150-160 DEG. C, stirring 10 minutes, then rubbing the mixed material twice by a colloid mill. Compared with the prior modified asphalt, the modified asphalt provided by the invention has excellent performance and low cost.

The invention discloses modified asphalt with heat storage stability and a preparation method thereof. An organic reagent containing long-chain alkyls and a proper process are used for performing organizing on rectorite; then, the prepared organic rectorite is used for modifying the asphalt; in order to realize the more uniform and stable dispersion of the organic rectorite in the asphalt, composite additives are added; benzene ring groups of the organic agent have higher rigidity, the active points combined with the asphalt molecular chains are provided, the long-chain alkyls enable the rectorite to form a peeling type structure, so that the rectorite has larger specific area in an asphalt base body; the inhibition effect on the asphalt molecular chain motion is more obvious; meanwhile, through the benzyls and the long-chain alkyls, the rectorite has higher lipophilicity; the dispersion in the asphalt is easier, so that the obtained modified asphalt system has better excellent heat temperature stability, anti-aging performance and heat storage stability than the SBS modified asphalt; the heat storage stability is greatly improved.

The invention discloses an asphalt road, and belongs to the field of roads. The asphalt road comprises a roadbed, a subgrade and a road surface. The subgrade is arranged in the roadbed and is provided with a horizontal layered structure. The subgrade is provided with a first mixed slag layer, a rubble layer, a second mixed slag layer and a concrete layer from bottom to top, and a geogrid and low-voltage shielded wires are arranged in the second mixed slag layer. A plurality of solar photovoltaic modules are arranged in the middle of the road surface in the road extension direction, and the solar photovoltaic modules are connected with a photovoltaic inverter through the low-voltage shielded wires. The asphalt road has the characteristics of being high in flatness, capable of avoiding the circumstances of insufficient partial compaction degrees, serious temperature segregation and the like, good in road surface temperature sensing property, good in elasticity and ageing-resistant performance, not prone to melting or flowing at high temperatures, good in toughness and not likely to be cracked at low temperatures, capable of meeting the using requirements of high-grade roads, and capable of fully utilizing high temperatures of the road surface to conduct solar power generation.

Disclosed herein are stability-enhanced formulations that comprise a therapeutic protein and a stability-improving amount of a stabilizing excipient, wherein the stabilized-enhanced formulation is characterized by an improved stability parameter in comparison to a control formulation otherwise identical to the stability-enhanced formulation but lacking the stabilizing excipient. Further disclosed herein are methods of improving stability of therapeutic formulations or improving parameters of protein-related processes.

The invention relates to the technical field of petroleum chemical engineering products, and concretely relates to a protection anti-sloughing agent for well drilling. The protection anti-sloughing agent for well drilling comprises, by weight, 40-60 parts of petroleum asphalt, 2-3 parts of anhydrous aluminum trichloride, 4-8 parts of sodium hydroxide, 4-6 parts of potassium carbonate, 4-8 parts of ammonia water and 4-6 parts of dimethyl diallyl ammonium chloride. The purpose of the invention is to provide the protection anti-sloughing agent for well drilling, with ideal performances.

The invention discloses a stabilizer and an application thereof, and SBS modified asphalt and a preparation method thereof. The stabilizer is prepared by a method comprising the following steps: carrying out an esterification reaction on a styrene-maleic anhydride copolymer and long-chain alcohol under the action of acid catalysis to obtain the stabilizer. The stabilizer disclosed by the inventioncan stably adsorb and act on polystyrene chains and asphaltene macromolecules of SBS; by utilizing the long-chain alkyl, the agglomeration of SBS and the aggregation and sedimentation of asphaltene in the heat storage process can be prevented, and the dispersion effect of light components in the asphalt on the SBS and the asphaltene can be enhanced, so that the SBS modified asphalt has long-termheat storage stability.

The invention relates to the field of titanium dioxide slurry and titanium dioxide preparation, in particular to a titanium dioxide composite material and a preparation method thereof. The titanium dioxide composite material is mainly prepared from a phosphine carboxylic acid compound and a titanium dioxide material with a coating layer, the phosphine carboxylic acid compound has a structure as shown in a general formula (I) or (II). The titanium dioxide composite material has excellent dispersing performance and can be quickly dispersed in water without the aid of external force; in addition, the titanium dioxide composite material also has relatively excellent heat storage stability and application performances such as hue, covering power and glossiness.

Belonging to the technical field of preparation of pavement hot-pouring crack pouring glues, the invention discloses a pavement hot-pouring crack pouring glue with storage stability and a preparationmethod thereof, and solves the problems that segregation can occur among the components of existing crack pouring glues in the storage process, and the segregation among the components can seriously affect the pavement service performance of crack pouring glues. The crack pouring glue comprises: 60%-70% of matrix asphalt, 3%-6% of SBS, 12%-20% of rubber powder, 0.02%-0.04% of a stabilizer and 6%-20% of a plasticizer. The preparation method of the crack pouring glue includes the steps of: firstly, conducting low speed stirring and swelling on the matrix asphalt and SBS, then performing high speed shearing, then adding the stabilizer, and further conducting shearing; mixing the rubber powder with the plasticizer, conducting low speed stirring and swelling, then adding the swelled mixture ofthe rubber powder and the plasticizer into the mixed system of the asphalt and SBS, and performing high-speed shearing; and finally conducting constant-temperature development so as to obtain the hot-pouring crack pouring glue with storage stability. The method provided by the invention can be applied to preparation of the pavement hot-pouring crack pouring glue with storage stability.