34results about How to "TVOC reduction" patented technology

The invention belongs to the technical field of polypropylene materials, and discloses environment-friendly flame retardant low-odor modified polypropylene and a preparation method and application of modified polypropylene in inner decoration of a school bus. The environment-friendly flame retardant low-odor modified polypropylene comprises the following components by weight percent: 40-90% of polypropylene, 4-30% of a flame retardant, 2-20% of an antismoke agent, 2-5% of an odor adsorbent, 1-5% of a TVOC (Total Volatile Organic Compound) remover and 0.3-1.2% of a stabilizer. According to polypropylene provided by the invention, the effect of excellent mechanical property, good flame retardant effect and low smoke density is realized by selecting a special low-odor nitrogen and phosphorus halogen-free flame retardant and metal hydroxide as the antismoke agent. The odor adsorbent and the TVOC remover are added to effectively remove TVOC and other small molecular matters, so that the modified polypropylene which satisfies the demand on excellent mechanical property, good flame retardant effect, low smoke density, low odor and low TVOC is prepared, and the modified polypropylene can be suitable for inner decoration of the school bus.

A process for production of wood-base materials from lignocellulosic comminution product is disclosed. The wood-base materials are treated with at least one additive in the course of their production to reduce or diminish the emission of volatile organic compounds (VOCs) and, optionally, very volatile organic compounds (VVOCs), in particular terpenes and acids. The treatment is effected with one additive, being a porous carbon, like activated carbon. In another aspect, the present application is directed to the use of porous carbon, in particular, activated carbon, to reduce or diminish the emission of VOC, and optionally, VVOC, to reduce or diminish the emission of terpene and acids and aldehydes. Also, wood-base materials which are obtainable with the process or wood-based materials produced by using the additives mentioned above and which have reduced emission of VOCs, in particular terpenes and acids but also aldehydes are disclosed.

The invention discloses a low-odor, low-VOC and scratch-resistant polypropylene interior material for vehicles and a preparation method of the polypropylene interior material. The low-odor low-VOC scratch-resistant polypropylene interior material for the vehicle comprises the following components: 63 to 66% of polypropylene, 18 to 22% of talcum powder, 8 to 12% of a flexibilizer, 0.3 to 0.5% of an antioxidant, 0.3 to 0.5% of a lubricant, 0.1 to 0.3% of a light stabilizer, 1 to 3% of a deodorant and 1 to 3% of a scratch-resistant agent. The pore diameter of the deodorant is 10 [mu] m and 50 [mu] m; and the scratch-resistant agent is formed by compounding silicone and erucyl amide according to a weight ratio of 1: 2-2: 1. By adopting the deodorant containing the microporous water-containing structure, the odor grade and VOC content of the material can be effectively reduced, so that the odor grade standard of automotive trim materials of various main engine plants is less than or equal to 3.0, and the VOC content standard is met.

The invention relates to a low-TVOC (total volatile organic compound) long glass fiber reinforced polypropylene material for an automotive trim and a preparation method of the material. The material comprises, by weight, 30-50 parts of glass fiber yarns, 100 parts of polypropylene resin, 2-8 parts of antioxidants, 1-3 parts of light stabilizers, 0-5 parts of flexibilizers, 0.5-5 parts of crosslinking agents and 0.5-5 parts of adsorbents. The long glass fiber reinforced polypropylene material has the characteristic of low TVOC, is simple in process and meets the requirements of practical production. The requirements of broad consumers for continuous improvement of in-car air quality are further met, and development of green environment-friendly materials in automobile industries in China ismore effectively pushed.

The invention belongs to the technical field of polypropylene materials, and discloses environment-friendly flame retardant low-odor modified polypropylene and a preparation method and application of modified polypropylene in inner decoration of a school bus. The environment-friendly flame retardant low-odor modified polypropylene comprises the following components by weight percent: 40-90% of polypropylene, 4-30% of a flame retardant, 2-20% of an antismoke agent, 2-5% of an odor adsorbent, 1-5% of a TVOC (Total Volatile Organic Compound) remover and 0.3-1.2% of a stabilizer. According to polypropylene provided by the invention, the effect of excellent mechanical property, good flame retardant effect and low smoke density is realized by selecting a special low-odor nitrogen and phosphorus halogen-free flame retardant and metal hydroxide as the antismoke agent. The odor adsorbent and the TVOC remover are added to effectively remove TVOC and other small molecular matters, so that the modified polypropylene which satisfies the demand on excellent mechanical property, good flame retardant effect, low smoke density, low odor and low TVOC is prepared, and the modified polypropylene can be suitable for inner decoration of the school bus.

There are provided a polyester resin for toner which has a sufficiently low TVOC, can be produced with high productivity, and can produce toner having excellent durability; and toner containing the polyester resin for toner. The polyester resin for toner has a TVOC of 380 ppm or less and includes a component derived from ethylene glycol, a hydrocarbon group having 12 carbon atoms or more, and a titanium element.

The invention discloses a foamed polypropylene composite sheet and a preparation method thereof. The sheet sequentially comprises from the outside to the inside: a toughening layer, including a cross-linked foamed polypropylene composited with a thermoplastic elastomer or polyvinyl chloride on the surface. Propylene; reinforcement layer, including polyester / polyolefin / organic montmorillonite composite; core layer, including foam composite material with a foaming ratio of 2 to 5 times; the thickness of the composite sheet is 4 to 6mm, and the bending The modulus is 1100~1400MPa. The foamed polypropylene composite sheet provided by the present invention still maintains high bending strength during the process of increasing the expansion ratio, and due to the addition of inorganic particles with high specific surface area and high surface activity in the composite sheet, the product It has a certain adsorption capacity for harmful gases, realizes the purpose of reducing VOC release, and is suitable for popularization and use.

The invention relates to a formaldehyde-free antibacterial bamboo straw composite substrate and a preparation method thereof, wherein the preparation method includes in-situ preparation of an antibacterial adhesive: using lignin to reduce silver ions in situ to generate nano-silver to obtain an antibacterial adhesive Preparation of composite base material: the base material includes bamboo scraps and / or straw scraps with a length of 0.3-20.0mm and a thickness of 0.3-0.7mm, which are mixed to obtain a mixture of surface layer and core layer; aldehyde-free antibacterial Preparation of bamboo straw composite substrate: mix and sizing the upper surface layer mixture, the lower surface layer mixture and the core layer mixture with antibacterial adhesive and / or isocyanate adhesive respectively to obtain the sizing For mixing materials, the mixed materials after sizing are paved, hot-pressed and post-treated to obtain the formaldehyde-free antibacterial bamboo straw composite base material. The method provided by the invention makes full use of the existing bamboo and straw resources, and the prepared composite base material has extremely low formaldehyde emission, meets the requirements of the "formaldehyde-free wood-based panels and their products" standard, and has excellent antibacterial properties.

The invention discloses a low-odor, low-emission, whiteness red phosphorus flame-retardant masterbatch for nylon and a preparation method thereof, which is prepared from the following components in parts by weight: 50-85 parts of whiteness red phosphorus , Hydrophobic odor adsorption masterbatch 1-5 parts, antioxidant 0.2-1.0 parts, lubricant 0.2-1 parts. The red phosphorus flame-retardant masterbatch prepared by the invention has wide versatility, high active ingredients, no obvious odor, low addition amount, and simple preparation method. At the same time, it also breaks through the limitation of color, so that the product is not limited to dark-colored products, and It can effectively reduce dust pollution and improve the working environment.

The invention discloses a low TVOC polypropylene composite for motor vehicles and a preparation method thereof. A hydrogen type high silica alumina ratio porous molecular sieve is added to the TVOC polypropylene composite for the motor vehicles. The high silica alumina ratio means that the mole ratio of silicon dioxide to aluminium oxide is more than 30.In the invention one or more hydrogen type high silica alumina ratio porous molecular sieve materials which can effectively adsorb volatile and nonpolar organic compound in the polypropylene modified material are adopted, the prepared composite material has the characteristic of low TVOC. The porous molecular sieve materials are free from lyophobic modification and have simple production technology and wide source. The low TVOC polypropylene composite for the motor vehicles has simple preparation technology and low cost.

The invention relates to a polyvinyl acetate emulsion and a preparation method thereof. The polyvinyl acetate emulsion is prepared from raw materials comprising the following parts by weight: 15-35 parts of vinyl acetate; 0.1-0.7 parts of acrylic acid; 1-25 parts of vinyl acetate-ethylene copolymer; 0.6 parts of ethylene glycol diacetate ‑4 parts; 3‑9 parts of polyvinyl alcohol; 0.01‑0.4 parts of sodium lauryl sulfate; 0.01‑0.7 parts of antifreeze; 0.1‑5 parts of additives; 45‑75 parts of water. In the polyvinyl acetate emulsion, the content of formaldehyde and TVOC is less than the national standard, does not contain APEO and phthalate, and meets the foreign limit standard.

The invention discloses a biological peculiar smell scavenger and a production method thereof. The scavenger comprises bacillus megaterium (CGMCC 1.2393), candida utillis (CGMCC 2.1012) and azotobacter chroococcum (CGMCC 1.2391). The production method for the scavenger comprises the following steps of: inoculating the activated bacillus megaterium, candida utillis and azotobacter chroococcum into a silicate group bacteria culture medium, a wort culture medium and a nitrogen-fixing culture medium to perform seed liquid culture respectively; and mixing the three seed liquids in a mass part ratio of 0.5-1.5: 1-2: 1-2, and adjusting the concentration of the mixed solution as required. The biological peculiar smell scavenger sprayed to a place with peculiar smell can remarkably reduce the stench TVOC, particularly has obvious effect of reducing ammonia, aldehyde and benzene, and has the advantages of low cost, no secondary pollution and convenient use.

The invention relates to a high temperature resistant silane modified adhesive and its preparation method and application. The high temperature resistant silane modified adhesive includes A component and B component, A component includes 100 parts of silane modified polymer, The first plasticizer is 0-15 parts, the filler is 10-40 parts, the crosslinking agent is 2-10 parts, the silane coupling agent is 2-8 parts and the curing agent is 0.5-10 parts, and the B component includes 100 parts of epoxy resin , 10-30 parts of the second plasticizer, 5-20 parts of molecular sieves, 0.5-5 parts of water and 0.1-2 parts of organic tin catalyst. The high-temperature-resistant silane-modified adhesive is suitable for non-polishing aluminum substrates and can meet the performance indicators of good elasticity and good bonding strength after high-temperature resistance. The TVOC is lower than 100mg / L, which can meet the production requirements of passenger car doors. skills requirement.

The invention relates to an odor-free and low-TVOC polyurethane sealant for automotive trims, and a preparation method and an application thereof. The polyurethane sealant is prepared from the following components in mass percents: 20-40% of polyurethane prepolymer, 15-40% of environmentally friendly plasticizer, 5-25% of carbon black, 25-60% of white reinforcing filler, 0.2-2% of curing accelerator, 0.2-2% of dehydration stabilizer, 0.2-2% of deodorant, 0-2% of adhesion promoter, 0-30% of thixotropic agent, 0-2% of light stabilizer and 0-2% of antioxidant. Compared with the traditional polyurethane sealant, the polyurethane sealant provided by the invention emits no odor when being used in a long-term closed high temperature (80 DEG C) environment, and the odor rating is 1 level, so the polyurethane sealant has the advantages of being odor-free, low in TVOC and harmless to human body and environment, satisfies the air quality evaluation guidance requirements of passenger cars, and is suitable for sealing and joint filling of automotive trims.

A polyester resin, including:(a) a constitutional unit derived from at least one tetravalent carboxylic acid selected from Compounds (A) and (B);a constitutional unit derived from a bisphenol A-alkylene oxide adduct; anda constitutional unit derived from an aliphatic alcohol having a boiling point of lower than or equal to 290° C.,where the polyester resin is free of a constitutional unit derived from a monovalent carboxylic acid, an acid value of the polyester resin is 8 to 55 mg KOH / g, and an amount of the tetravalent carboxylic acid is 1 to 30 mol % when an total amount of the tetravalent carboxylic acid, and other polyvalent carboxylic acid excluding the Compounds (A) and (B) is set to 100 mol %,where X1, X2, X3 and X4 each independently represent a trivalent organic group, and Z1 and Z2 each independently represent a single bond or a divalent organic group, wherein tetravalent carboxylic acid is, for example, 3,3′,4,4′-biphenyltetracarboxylic dianhydride, 2,2′,6,6′-biphenyltetracarboxylic dianhydride, 4,4′-oxydiphthalic dianhydride, 9,9-bis(3,4-dicarboxyphenyl) fluorene dianhydride, and / or 4,4′-(4,4′-isopropylidenediphenoxy) diphthalic anhydride.

The present disclosure provides a novel transition metal compound which exhibits excellent catalytic activity and is useful in the preparation of a polypropylene having high impact strength, and a method for preparing a homo polypropylene using the same.

The invention provides a one-component silane-modified polyether sealant for automobiles and a preparation method thereof. The raw materials of the one-component silane-modified polyether sealant for automobiles include silane-modified polyether resins and functional fillers. The raw materials of functional fillers include nano activated carbon, carbonate, silicate, photocatalyst and heat activated catalyst. The present invention utilizes nano-activated carbon, carbonate and silicate to adsorb organic gases, and since the composite material also contains photocatalysts and heat-activated catalysts, the adsorbed small molecules can be catalyzed, oxidized, and degraded under the conditions of light and heating. The degradation products are mainly water and carbon dioxide, thereby reducing the TVOC of the product and avoiding the desorption problem of nano-activated carbon at high temperature.

The invention relates to a low-diffusion polypropylene composition which comprises the following components in percentage by weight: 55-99.8 percent of polypropylene composite material and 0.2-5 percent of organopolysiloxane silicone oil, wherein the organopolysiloxane silicone oil comprises one or a plurality of hydrogen-type polysiloxane, hydroxyl polysiloxane, methyl polysiloxane, ethenyl polysiloxane, amino polysiloxane, epoxy polysiloxane and methoxyl polysiloxane silicone oil. A preparation method of the low-diffusion polypropylene composition comprises the following steps of: weighing the components of polypropylene, talcum powder, a toughening agent, an antioxidant, a light stabilizer and the organopolysiloxane silicone oil in percentage by weight; mixing the polypropylene, the toughening agent, the antioxidant, the light stabilizer and the organopolysiloxane silicone oil for 1-2 minutes in a high speed mixer firstly and then adding the talcum powder and mixing for 3-5 minutes; and extruding and pelletizing the mixed materials by using a double screw extruder, wherein the process conditions are that: the temperature of a first area is 200-210 DEG C, the temperature of a second area is 210-220 DEG C, the temperature of a third area is 210-220 DEG C and the temperature of a fourth area is 200-215 DEG C, the retention time is 1-2 minutes, and the pressure is 10-20MPa. Thelow-diffusion polypropylene composition has the advantages that: the organopolysiloxane silicone oil forms a layer of even film on the surface of the talcum powder, which can block up a TVOC (Total Volatile Organic Compound) of the polypropylene material so as to reduce the pollution.