444 results about "Total volatile" patented technology

The invention belongs to a polypropylene (PP) composite material with a low volatile organic compound (VOC) and high performance specially used for automotive upholsteries and a preparation method thereof, relating to the automobile field. The special material is prepared from the following components by mass percent: 60-80% of polypropylene (PP), 10-25% of reinforcing filler, 10-15% of flexibilizer, 0.2-0.5% of antioxidant and 0.1-0.5% of light stabilizer. The total volatile organic compound (TVOC) of the polypropylene composite material obtained in the invention is less than 40 mu gC/g; the notch impact strength of a cantilever beam under 23 DEG C is 15-40kJ/m2; the flexural modulus is 1500-2300MPa; the melt index is more than 10g/10min at a temperature of 230 DEG C and at a weight of 2.16kg; and the composite material has favorable light and heat stability, low VOC, few components, low cost, good performance, easy preparation and can be widely used in the production of automotive upholsteries.

Provided is an in-car air quality monitoring and purification regulating system. A storage battery and three devices respectively powered by the storage battery are installed in a car. The three devices are a ventilating device, an adsorption and filtering device and a heating device. A temperature and humidity sensor, a formaldehyde sensor, a carbon monoxide sensor, a total volatile organic compound sensor and an inhalable particle sensor which are installed in the car are respectively connected with a system control module, and the system control module comprises a sensor signal processing circuit and a power supply on-off control circuit for the three devices. The system can monitor indexes such as in-car air quality and temperature and humidity in real time and start the three devices according to the index overproof conditions; the indexes can also be uploaded through the wireless network to a mobile by the system control module to be displayed in real time; the mobile phone can send instructions to the system control module according to users' requirements to start or shut down the three devices in real time, and purification adjustment of in-car air is achieved.

The application of four-needle zinc oxide whisker in photocatalysis to degrade indoor organic pollutant is to use four-needle zinc oxide whisker as photocatalytic material to degrade indoor formaldehyde, acetaldehyde, benzene and its homolog, and total volatile organic compound under the irradiation of ultraviolet ray. The four-needle zinc oxide whisker may be used alone, or through mixing with other material, such as ZrO2, SiO2, Al2O3, TiO2, CaO, MgO, CaCO3, mica, zeolite, active carbon, etc. or as additive added into plastic, ceramic, fiber, timer, rubber, etc to form different photocatalytic product. The present invention has excellent degradation effect.

The invention discloses a fresh air machine with a temperature compensation function and relates to the field of air purification. The fresh air machine comprises an outdoor unit and an indoor unit, the outdoor unit is a heat exchange system comprising a compressor, and the indoor unit is an air purification adjustment portion and comprises an air quality testing portion, an air purification portion and a temperature adjustment portion; the air quality testing portion comprises a PM (particulate matter) 2.5 sensor, a TVOC (total volatile organic compound) sensor, a CO2 sensor, a temperature and humidity sensor and the like; the air purification portion comprises an initial effect filter, an electrostatic dust collector, an activated carbon filter, an efficient filter and a light catalyst component; the temperature adjustment portion refers to heat exchange fins connected with the outdoor unit. Indoor air can be purified manually or according to indoor air quality testing values, the indoor air temperature can also be regulated, air is purified, and meanwhile, comfortable temperature is provided.

The invention discloses a device and a method for purifying total volatile organic compounds (TVOCs). The device comprises a gas inlet, an active carbon adsorption apparatus, an supersonic desorption emitter, a cold combustion chamber, a gas supply port, a desorption fan and a gas discharge port, wherein the gas inlet collects a TVOC exhaust gas and inputs the TVOC exhaust gas to the active carbon adsorption apparatus, the active carbon adsorption apparatus adsorbs the TVOC exhaust gas, and a gas reaching a discharge standard is directly discharged through the gas discharge port; the supersonic desorption emitter is started after a certain degree of the adsorption to desorb the TVOCs, and inputs the TVOCs to the cold combustion chamber; and the desorbed TVOCs are conveyed to the cold combustion chamber together with supplied oxygen, the TVOCs are decomposed by the vacuum ultraviolet (VUV) rays of the cold combustion chamber and reacts with ozone and oxygen to generate H2O and CO2, and the TVOCs are discharged into the gas discharge port through the desorption fan after the VUV cold combustion to generate H2O and CO2 to discharge a purified gas.

The invention discloses a nanometer oxide ceramic purification and adsorption material with decomposition and bactericidal performance, which is extensively applied in air purification and water purification, the nanometer oxide ceramic purification and adsorption material can adsorb such harmful gases in the air as formaldehyde, benzene, ammonia, TVOC (total volatile organic compound), sulfides and the like through the van der waals force and chemical bonding force between molecules by means of such auxiliary force functions as blower, and the like, and meanwhile, the material releases anions to assist air purification, and decomposing and purifying agents are added to decompose the harmful gases in the air to carbon dioxide and water vapor under normal temperature so as to prolong the service life of the material; a non-oxidative germicide is added to kill bacteria and viruses in the air and inhibit the regeneration of the bacteria and viruses. The nanometer oxide ceramic purification and adsorption material has the advantages of low cost, high purification efficiency, good sterilization effect and long service life and overcomes the single adsorption defect of traditional adsorption materials, the easy saturation shortcomings of carbon adsorption materials and the purification defect of being harmful to human body of high-concentration ozone.

The invention discloses a mine crystal formaldehyde remover used for decoration. The mine crystal formaldehyde remover used for the decoration comprises the following constituents: by weight, 10-15 parts of attapulgite, 10-15 parts of bentonite, 10-15 parts of sepiolite, 2-4 parts of kieselguhr, 10-15 parts of zeolite, 10-15 parts of zirconium phosphate and 10-15 parts of nanometer titania. The mine crystal formaldehyde remover used for the decoration is strong in air purification effect, has better absorption effects of benzene, ammonia and total volatile organic compounds (TVOC) and other chemical pollution in the air than traditional air purification materials such as activated carbon, and particularly has strong formaldehyde removing effects.

The invention relates to an electrodeless UV (Ultraviolet) source air cleaning and sterilizing method and device. The electrodeless UV source air cleaning and sterilizing method comprises the following steps: introducing the air to be sterilized from an air intake, filtering physical impurities in the air by virtue of a filter screen at the air intake, and then, enabling the filtered air to enter into an excitation chamber; meanwhile exciting a magnetron by a microwave controller to send out microwaves, and enabling the microwaves to enter into the excitation chamber through an exciter; and sending out UV light with the wavelength of 254-280nm by molecules in an electrodeless luminophor in the excitation chamber under the action of the microwaves, generating ozone under the combined action of the UV light and the ozone in the air, inactivating bacteria and virus in the air of the excitation chamber, and exhausting the processed air through the filter screen at the air intake. The electrodeless UV-light source air cleaning and sterilizing device comprises an air inlet fan, an air inlet filter net, the excitation chamber, the microwave controller, the exciter, the electrodeless luminophor, and the air outlet filter net. The electrodeless UV source air cleaning and sterilizing device can be used for inactivating the bacteria in the air and eliminating gaseous pollutants including formaldehyde, a TVOC (total volatile organic compound) and benzene, and has the advantages of high air purification rate, short processing time and the like.

The invention provides a comprehensive treatment pneumatic caisson method for indoor environment pollution, and is used for solving the problem that concentrations of indoor formaldehyde, indoor benzene, indoor ammonia and indoor TVOC (total volatile organic compound) exceed the national standard. The comprehensive treatment pneumatic caisson method comprises the step of: applying the following six treatment solutions in an occasion that the concentrations of the indoor formaldehyde, the indoor benzene, the indoor ammonia and the indoor TVOC (total volatile organic compound) exceed the national standard: a nanocomposite catalyst solution, 1%-50% of acetum, a formaldehyde treatment solution containing active amido, a VOC (volatile organic compound) stabilizing solution, a negative oxygen ion generator and a deodorant. According to the application of the comprehensive treatment pneumatic caisson method for the indoor environment pollution, provided by the invention, the concentrations of pollutants after treatment are obviously reduced; and various effects are obtained for reducing the concentrations of the pollutants including the indoor formaldehyde, the indoor benzene, the indoor TVOC, the indoor ammonia and the like caused by furniture, floor, doors and window, carpets, wallpaper, fabrics, paint, coatings, dyes, building materials and the like.

The invention discloses a low smell, low emission, halogen-free and flame retardant PA6/PP alloy and a preparation method thereof. The alloy comprises the following raw materials in parts by weight: 10 to 75 parts by weight of nylon 6, 10 to 75 parts of polypropylene, 10 to 30 parts of flame retardant, 1 to 5 parts of flexibilizer, 0.5 to 5 parts of hydrophobic smell adsorbing master batch, 0.1 to 1.0 part of antioxidant, and 0.2 to 1.0 part of lubricant. The preparation method comprises the following steps: weighing raw materials according to the ratio mentioned above, adding raw materials into a high speed mixing machine, mixing the raw materials for 2 to 10 minutes, adding the obtained mixture into a co-rotating parallel twin-screw extruder, and carrying out extrusion granulation. The total volatile organic compounds (TVOC) of the prepared PA6/PP alloy are prominently reduced, and the product is not only a black product. The alloy has the characteristic of low smell, at the same time, all physical and mechanical properties of the alloy are not influenced, the alloy also has a low water absorbing rate, and the moulding and processing performance is not affected either.

The invention relates to seafood preservative and preparation and application thereof and belongs to the field of food preservation and fresh-keeping. The seafood preservative is prepared from carrageenan oligosaccharides and water, and the concentration of carrageenan oligosaccharides is 10-25 g/L. A preparation method includes the steps that firstly, the carrageenan oligosaccharides are prepared from carrageenan through an enzyme hydrolysis method, then the carrageenan oligosaccharides are used for preparing the preservation, specifically, the carrageenan oligosaccharides are dissolved in water, and the concentration of the carrageenan oligosaccharides in a solution is 10-25 g/L. The seafood preservative has the advantages that seafood can be effectively prevented from decaying, the total number of bacterial colonies of shrimps, the total volatile basic nitrogen (TVB-N), the Ph value, the activity of polyphenol oxidase, sensory indexes and other physiological and biochemical indexes are effectively improved, the shelf life of seafood is prolonged, and the preservative is in the food level and is safe and free of toxin.

Disclosed is a model for predicting shelf life of salmon. The model is characterized in that quality index of salmon preserved at different temperature is researched, time based change rules of color difference (brightness L and red chromaticity a*), total volatile basic nitrogen (TVB-N), freshness index K-value, thiobarbituric acid (TBA), microorganism quality and sensory quality of salmon are measured to determine a salmon quality change dynamic model, and a salmon shelf life prediction module is built according to salmon quality indexes of TVB-N, the freshness index K-value, the TBA and the total number of bacterial colony reflecting microorganism changes. By the model, the rest shelf life of salmon preserved at the temperature within the range from 0 DEG C to 20 DEG C can be predicted quickly and effectively, so that directions are provided for storage, transportation and selling processes, working staff can make corresponding handling on salmon with different freshness degree in time, and cost is saved.

The invention relates to air purification adsorbent capable of effectively removing formaldehyde and deodorizing as well as a preparation method. The air purification adsorbent is prepared from the following raw materials in percentage by weight: 20 to 40 percent of activated carbon, 20 to 40 percent of diatomite, 5 to 10 percent of attapulgite, 5 to 10 percent of bentonite, 5 to 10 percent of tourmaline, 5 to 10 percent of meerschaum, 2 to 10 percent of catalysts, and 2 to 10 percent of additives. The air purification adsorbent is mainly used for eliminating harmful substances such as free formaldehyde, benzene, toluene, and TVOC (total volatile organic compounds) in the air, so that air pollution in rooms and vehicles can be solved to fulfill the aim of air purification.

The invention relates to colored regenerated polyester staple fibers and a preparation method thereof. The preparation method comprises the following steps: firstly, carrying out reactive melting and blending on reclaimed polyester and a polyester oligomer melt to obtain a primary depolymerized melt; then carrying out alcoholysis reaction on the primary depolymerized melt and ethylene glycol to obtain a deep depolymerized melt; then carrying out TVOC (Total Volatile Organic Compound) removal and cracking functional group repairing on the deep depolymerized melt to obtain a low-TVOC-content polyester oligomer melt; then carrying out condensation polymerization on the low-TVOC-content polyester oligomer melt to obtain a low-TVOC-content regenerated polyester melt; finally, controlling color matching of the low-TVOC-content regenerated polyester melt by a computer color matching system to obtain a colored regenerated polyester melt; enabling the colored regenerated polyester melt to enter a melt direct spinning system to prepare the colored regenerated polyester staple fibers. The finally prepared colored regenerated polyester staple fibers provided by the invention have relatively small color aberration; the content of TVOC is 30ppm to 300ppm and the content of nonylphenol and isomers thereof is 80ppm to 200ppm.

The invention relates to a method for predicting the quality variation of chilled meat, which comprises researching the total number of bacterial colony, the total volatile basic nitrogen (TVBN) and the color difference and the sense variation of chilled meat under different storage temperatures, and establishing a dynamic model of the quality variation of chilled meat according to each index. The method is beneficial for rapidly and accurately doing dynamic analysis for the quality of chilled meat.

The invention discloses an environment-friendly building material formed by shell powder and a preparation method. The building material comprises the following components by weight: 20 to 50 parts of the shell powder, 20 to 50 parts of diatomite, 10 to 20 parts of kaolin, 1 to 5 parts of nanoscale titanium dioxide, 5 to 20 parts of quartz powder, 5 to 10 parts of talcum powder, 1 to 5 parts of cellulose, 10 to 15 parts of sepiolite powder, 10 to 20 parts of bentonite powder, 10 to 15 parts of vermiculite fine powder, 5 to 10 parts of calcined gypsum powder, 1 to 5 parts of negative ion powder, 10 to 20 parts of a photocatalyst, 10 to 20 parts of ground calcium carbonate powder and 10 to 30 parts of white carbon black. The building material provided by the invention does not use any harmful matter, is insusceptible to emitting harmful gases like formaldehyde, benzene, ammonia gas and total volatile organic compounds (TVOC), has functions of adsorbing and decomposing the harmful gases and a certain breathing humidity-adjusting function, and can effectively kill a variety of bacteria.

The invention discloses an ultralow-emission glass-fiber-reinforced polypropylene composite material and a preparation method thereof. The material comprises the following components in percentage by weight: 51.2-93.2% of polypropylene, 5.0-40.0% of glass fiber, 1.0-5.0% of compatilizer, 0.5-2.0% of volatilization assistant, 0.1-0.5% of antioxidant, 0.1-0.3% of photostabilizer and 0.1-1.0% of lubricant. The preparation method comprises the following steps: mixing the components in a high-speed mixer, and carrying out extrusion granulation under dual vacuum conditions by using a double screw extruder to obtain the ultralow-emission glass-fiber-reinforced polypropylene composite material. The ultralow-emission glass-fiber-reinforced polypropylene composite material has extremely low smell, and completely satisfies the requirements of the automobile host plant for smell; the TVOC (total volatile organic compound) content is much lower than the host plant standard; and the composite material has the same properties as the existing material, and thus, can be completely substituted for the existing material.

The invention provides a modified atmosphere packaging low-temperature beef refreshing method. The modified atmosphere configuration sets the mixing ratio of oxygen, carbon dioxide and nitrogen to be in the range of 40%-65% of O2, 25%-45% of CO2 and 10%-25% of N2; and the optimal modified atmosphere ratio is set as 50% of O2, 25% of CO2, 25% of N2 and 55% of O2, 35% of CO2, 10% of N2. The method of the invention comprises the following steps: firstly, cooling fresh beef at 0-4 DEG C, removing acid for 24h, boning, splitting, cutting flesh lump as about 300g, putting into a modified atmosphere packaging box, and carrying out gas flush packaging of the beef by means of coordination of a modified atmosphere packaging machine, thereby achieving the refreshing effect of 24d. The inflation time of modified atmosphere packaging is 3S, the pressure is 0.5Pa, and the packaged beef is put into a refrigerator or refrigerated cabinet with the temperature of 4+/-1 DEG C for storage. Both the aerobic bacterial count and the coliform group of the beef when the package is adopted are in the specified range of the national standard; and the physicochemical indexes of the sensory property, color, flexibility, smell and freshness of the beef and the total volatile basic nitrogen conform to the indexes of fresh meat.

The invention relates to an environmental-friendly PU (Polyurethane) resin, which comprises oilgomer polyols, diisocyanate, dimethyl sulfoxide and dimethyl carbonate. The invention also relates to environmental-friendly PU leather using the environmental-friendly PU resin as a raw material. The environmental-friendly PU leather comprises a surface layer, a middle layer and a bottom layer, and each layer comprises the following raw materials in percentage by mass: 40-60% of PU resin, 2-10% of toner and 30-50% of solvent. The invention also relates to a method for preparing the environmental-friendly PU leather. The method comprises the steps of: coating a raw material composition of the surface layer on a piece of release paper, drying and cooling; coating a raw material composition of themiddle layer on the surface layer, drying and cooling; coating a raw material composition of the bottom layer on the middle layer, binding the middle layer with bottom cloth, drying and cooling; and stripping the release paper, and drying again. The invention solves the technical problems of high toxicity of organic solvents in the PU resin, residue of toxic organic solvent in a finished PU leather product, and overhigh TVOC (Total Volatile Organic Compound) content in the prior art. The method is particularly suitable for producing the environmental-friendly PU resin and the environmental-friendly PU leather.