10results about How to "Guaranteed degradability" patented technology

The application discloses a kind of bio-based modified calcium carbonate powder preparation's reinforced toughening polylactic acid composite material and preparation method thereof, using bio-based aliphatic diacid to modify calcium carbonate powder, then bio-based epoxy compound is grafted on the surface of the carboxylated calcium carbonate powder, and bio-based modified calcium carbonate crosslinking agent is prepared.Subsequently, carboxylated calcium carbonate powder and bio-based modified calcium carbonate crosslinking agent are added to polylactic acid and middle, and high-strength high-toughness degradable polylactic acid composite material is prepared by blending melt extrusion.The prepared polylactic acid composite material system component is simple, effectively reduces compatibility conflict, realizes high-strength high-toughness and rapid degradation simultaneously, greatly reduces production cost, and can be applied to agricultural film, food, packaging and medical field.

This invention relates to the field of slow-release fertilizer technology, specifically to straw-based slow-release organic fertilizer and its preparation method. The slow-release organic fertilizer includes an organic fertilizer core loaded with organic matter and nitrogen, phosphorus, and potassium nutrients using straw biochar as a carrier, and a slow-release coating covering the core. The slow-release coating is a cross-linked network formed by phytic acid cross-linking a hydroxyl polysaccharide substrate through phosphodiester bonds. Each phytic acid molecule forms an average of 1.5-3 phosphodiester bonds, with the remaining phosphate groups remaining as free phosphate groups and coordinating with iron and / or zinc. The phosphodiester bonds constitute the hydrolytic substrate of rhizosphere phosphatase. When crops are phosphorus deficient, the phosphatase secreted hydrolyzes the cross-linked bonds, causing the coating to uncross-link, thereby increasing the nutrient release rate with increasing phosphatase activity and simultaneously releasing trace elements such as iron and zinc. This allows nutrient release to adaptively match the crop's phosphorus deficiency requirements. The nitrogen release rate in still water over 28 days meets the national standard for slow-release fertilizers, and significantly improves the phosphorus accumulation and nitrogen fertilizer utilization rate in phosphorus-deficient soils.

The invention relates to a biomass-filled degradable elastic particle and a preparation method thereof. The biomass-filled degradable elastic particles comprise 50 to 70 parts of poly (butylene terephthalate)-adipate, 0 to 10 parts of polylactic acid, 0 to 5 parts of polycaprolactone, 50 to 70 parts of an inorganic filler, 0 to 10 parts of silane coupling agent modified wood flour, 10 to 40 parts of silane coupling agent modified cork particles, 0.5 to 1.5 parts of an antioxidant, 1 to 3 parts of a chain extender and 0.5 to 1.5 parts of a lubricant. The biomass-filled degradable elastic particles are degradable, good in elasticity and excellent in comprehensive performance.

The environment-friendly degradable antibacterial corrugated carton comprises a carton body, the carton body is of a cuboid hollow structure, a base is installed at the bottom of the carton body, a cover plate is installed at the top of the carton body, and an antibacterial assembly is installed at the bottom of the inner side of the cover plate. All parts are prepared from degradable materials, can be biologically degraded in a natural soil environment after being abandoned, are free of white pollution residues, accord with national green logistics packaging policies and sustainable development requirements, are free of environmental protection burden, accord with the green concept, have long-acting antibacterial property and internal and external dual antibacterial effects, guarantee article sanitation, and are worthy of popularization and application. The overall structure is stable, and the compression resistance and deformation resistance are improved through the reinforcing ribs and the supporting keels.

The present application relates to waste gas treatment technical field, disclose a kind of wet chemical catalytic oxidation treatment device for treating VOCs organic waste gas, including reaction tube, and the lower end of reaction tube is connected with inlet pipe and liquid discharge pipe, and reaction tube is connected with reagent pipe and is penetrated, and the one end of reagent pipe is connected with spraying equipment, and the outside of spraying equipment is connected with knob for controlling spraying amount, and spraying equipment is arranged in the central position in reaction tube, and spraying equipment below is provided with lifting frame, and the outside of lifting frame is connected with sealing strip, and lifting frame is connected with catalytic screen frame on, and catalytic screen frame is filled with catalytic packing, and lifting frame is slidingly connected in reaction tube, and the upper end of lifting frame is connected with U-shaped frame.The present application effectively solves the problem of poor adaptability of fixed reaction area, and improves the reaction contact area to ensure the degradation effect at high air volume, reduces the invalid consumption of reagent at low air volume, and greatly improves the adaptability and reaction efficiency of the device for different waste gas conditions.

This invention relates to the field of new yarn materials technology, and more particularly to a thermally insulating biodegradable PLA napped composite yarn and its preparation method. The yarn uses core-sheath structure PLA filaments as the base yarn, with a core layer of PLA and a sheath layer of low-melting-point PLA or copolymer PLA. The monofilament cross-section is irregular and / or hollow. Air blowing is used to form loop / arc loop pile structures on the surface of the base yarn. Subsequently, under restricted shrinkage conditions, the pile is locked and shaped, with the locking temperature controlled above the sheath softening temperature and below the core melting peak, causing the sheath to soften locally at the contact points to form point-bonding locking points to fix the pile. The pile height quantile, coefficient of variation, and bulk index are detected online, and the airflow, feed difference, and shaping parameters are adjusted in a closed loop to achieve structural and performance stability during continuous production. This solution combines high bulk, high warmth retention, washability retention, and batch consistency.

The application belongs to the field of multilayer films, and particularly relates to a degradable multilayer high-barrier film and a preparation method and application thereof; the multilayer high-barrier film comprises: an outer layer / adhesion layer / barrier layer / adhesion layer / outer layer; wherein the outer layer is a blend I of polybutylene adipate terephthalate and inorganic fillers; the adhesion layer is a blend II of polybutylene adipate terephthalate and tackifying resin; and the barrier layer is polyglycolic acid. The application can prepare a multilayer film with good processability, non-layering, biodegradability and high barrier property.

The invention discloses a treatment device for groundwater pollution remediation, and relates to the technical field of sewage treatment.The treatment device comprises a first sedimentation tank, a second sedimentation tank, a third sedimentation tank and a fourth sedimentation tank, a first liquid outlet pipe, a first electromagnetic valve, a first liquid outlet pump and a second sedimentation tank are connected above one side of the first sedimentation tank; an adsorbent feeding mechanism and a decontamination flora feeding mechanism are arranged on the first sedimentation tank, a first pollution detection mechanism is arranged at the joint of the first liquid outlet pipe and the first sedimentation tank, and a first electromagnetic valve and a first liquid outlet pump are started when the standard is detected; a second liquid outlet pipe is connected above one side of the second sedimentation tank, a second electromagnetic valve is arranged and is communicated with the underground water body, a second pollution detection mechanism is arranged at the joint, and the second electromagnetic valve is started when the standard is detected; the bottom of one side of the first sedimentation tank is connected with a waste discharge pipe, a third electromagnetic valve, a waste discharge pump and a waste tank, the waste tank is communicated with the first sedimentation tank through a water return pipe with a water return pump, and a solid separation net is arranged at the joint; according to the method, the pollution remediation treatment effect can be improved, and secondary pollution is reduced.

This invention relates to the field of pet material technology, and more particularly to a multi-layered coated olive pit cat litter granule, comprising a core layer, a middle layer, and an outer layer. The core layer contains olive pit particles with a particle size of 1.5–3.0 mm. The middle layer coats the outer surface of the core layer and contains guar gum, sodium carboxymethyl cellulose, and zeolite powder. The outer layer coats the outer surface of the middle layer and contains ZAG complex, sodium bicarbonate, vegetable oil, and surfactant. The multi-layered coated olive pit cat litter granule provided by this invention achieves significant improvements in comprehensive performance across multiple dimensions, including water absorption, breakage resistance, deodorization, and antibacterial properties.

This invention relates to the field of packaging materials technology, and more particularly to a low water vapor transmission rate coating for packaging materials and its preparation method. The aforementioned low water vapor transmission rate coating for packaging materials comprises, by mass percentage: 25-40% modified polyurethane resin, 5-20% linear alkane compound, 3-15% hydrophobic modified acrylic resin, 1-5% amino-terminated polyamide amine, 1-5% silica microparticles, 3-5% hydroxyethyl cellulose, 0.1-0.5% amino curing agent, 1-3% water-based additives, and the balance being water. The coating formed by this invention has an ultra-low water vapor transmission rate and also possesses heat-sealing capabilities. It eliminates the need for additional adhesive, lamination, or coating processes, simplifying the processing. The resulting coating is transparent, with a surface dyne value >42, and does not affect the appearance of paper or subsequent printing processes.