7results about How to "Fast biodegradation" patented technology

The invention relates to the technical field of stretch wrapping films, in particular to a preparation process of an environment-friendly PE stretch wrapping film which comprises the following components: polyethylene glycol terephthalate, linear low-density polyethylene, bio-based polyethylene, starch-based plastic, nanocellulose, plant polyphenol, a tackifier, an anti-ultraviolet agent and an antistatic agent. By adopting a bio-based material and a degradable material, high performance is realized, and meanwhile, the environment-friendly requirement is also met. Due to material selection, carbon emission in the production process is reduced, and the wrapping film can be degraded by the natural environment more easily after being used.

The invention relates to a method for repairing polycyclic aromatic hydrocarbon contaminated soil, which comprises the following specific steps: S1, eluting the polycyclic aromatic hydrocarbon contaminated soil by using a surfactant to obtain eluted soil; s2, modifying the biochar by adopting a modification solution to obtain modified biochar; and S3, the modified charcoal obtained in the step S2, MoS2 and monopersulfate are mixed and put into the eluted soil obtained in the step S1, and remediation of the polycyclic aromatic hydrocarbon contaminated soil is completed. Compared with the prior art, when the surface active agent, the biochar and the MoS2 technology are comprehensively applied to remediation of the polycyclic aromatic hydrocarbon contaminated soil, the surface active agent is firstly used for enhancing the solubility and the bioavailability of the PAHs; then, the modified biochar is combined with a MoS2 or PMS system to form a composite remediation system, and the removal efficiency and the remediation effect of polycyclic aromatic hydrocarbons (PAHs) can be improved.

The utility model discloses an inclined plate groove which comprises a sewage groove structure, a waste gas treatment assembly is detachably installed on the upper side of the sewage groove structure, the sewage groove structure comprises a conical groove, the conical groove is covered with a movable sealing groove cover in a sealed mode, the right side of the conical groove is communicated with a waste gas pipe, the lower side of the conical groove is communicated with a blow-off pipe, and the blow-off pipe is communicated with a coarse phosphorus discharging pipe. The outer wall of the conical groove is fixed to form a steam jacket assembly, the conical groove is communicated with a sewage overflow pipe, the waste collecting assembly comprises a mounting pipe which is communicated with an outlet of the sewage overflow pipe and is transversely arranged, a motor and a screw rod connected with the motor are arranged in the mounting pipe, and a waste collecting box is detachably mounted on the side, away from the motor, of the mounting pipe; a waste residue filter screen is embedded in the lower side of the mounting pipe and communicated with a sewage pipe, high-temperature steam enters the jacket heat preservation sealing layer through the steam inlet pipe, the steam heats the interior of the conical groove, and waste gas is treated under the action of the two layers of activated carbon filter screens and an activated carbon bag in the activated carbon bag box.

The utility model discloses an adsorptive environmental protection oil absorption recovery bag, including recovery bag main part, and recovery bag main part carries out the wrapping to tubular product, and recovery bag main part is multilayer structure, and recovery bag main part includes buffer layer, oil absorption layer, anti -infiltration layer, inner protective layer and outer layer from inside to outside in proper order, the material of outer layer of the utility model resists external impact in the use process, ensures that packing bag still can keep physical performance and chemical stability under the severe environment, adapts the severe working condition in the turnover process. Buffer layer plays the buffer effect of tubular product and oil absorption bag, avoids the damage of physical impact in the operation process to other functional materials. Oil absorption layer has the characteristics of oil absorption, and adsorbs and locks the oiliness in the mixture. Anti -infiltration layer has the barrier property, prevents the seepage of oil -water mixture. Inner protective layer relieves the destruction of internal tubular product to recovery bag main part. The whole impact resistance is strong, safe and durable, is not easy to be corroded, is obviously superior to traditional plastic cloth wrapping mode, is suitable for popularization and application.

The invention relates to the technical field of degradable materials, in particular to degradable double-sided leather and a preparation method thereof, and the degradable double-sided leather comprises the following components: (1) a substrate; (2) a silica gel coating, wherein the silica gel coating comprises 40-60 parts by weight of polydimethylmethylvinylsiloxane; 20 to 40 parts by weight of polycaprolactone modified polydimethylsiloxane; 10 to 30 parts by weight of polylactic acid grafted polysiloxane; 2 to 5 parts by weight of vinyl trimethoxy silane; 0.5-2 parts by weight of a platinum catalyst; 3-8 parts by weight of nano silicon dioxide; 1-5 parts by weight of a degradable starch-based toughening agent; 0.1 to 0.5 part by weight of trimethyl octadecyl ammonium chloride; 0.5 to 2 parts by weight of cellulose nanocrystals; 0.5-2 parts by weight of a natural plant oil-based matting agent; 0.1 to 0.5 part by weight of a bio-based dispersant; and (3) the weight loss rate of the surface treatment layer in 180 days exceeds 95%, which is far better than that of the traditional degradable material.

The invention relates to a preparation method of a biomass composite reinforced circulating corrugated carton, and belongs to the technical field of environment-friendly packaging materials. Uniformly mixing bamboo pulp and enzyme modified bamboo pulp fibers, firstly performing ultrasonic treatment, then introducing saturated steam for treatment, and filtering to obtain a pretreated raw material; sequentially carrying out biological bleaching and non-oxidizing bleaching on the pretreated raw materials, adding natural beewax emulsion for modification, immersing the pretreated raw materials into a chitosan solution, and filtering to obtain composite reinforced fibers; dispersing the composite reinforced fibers in deionized water to prepare paper pulp, and respectively preparing surface paper, corrugating medium paper and inner paper through papermaking, wet pressing molding and hot air drying; and uniformly coating the modified starch-based adhesive on the bonding surface, drying and cutting to obtain the corrugated carton. The corrugated carton prepared by the invention can be completely biodegraded within 5 months, and is excellent in environmental protection performance; the tensile strength and the bursting strength are improved; the water contact angle is large, the water resistance is obviously improved, and transportation in a humid environment can be adapted.

The invention belongs to the technical field of insecticide preparation, and particularly relates to an insecticide containing rust-coloured crotalaria herb with root and a preparation method of the insecticide. Raw materials of the insecticide comprise 30-40% of a Chinese herbal medicine component, 30-50% of a surfactant and 20-30% of an auxiliary agent, the Chinese herbal medicine contains rust-coloured crotalaria herb with root, the insecticide prepared from the rust-coloured crotalaria herb with root as the raw material is good in insecticidal performance, has a rapid killing effect on various crop pests, is high in insecticidal efficiency and does not generate antibodies in pest bodies; meanwhile, the degradation speed is high, the environment cannot be polluted, the body health of farmers cannot be harmed, and the application of the rust-coloured crotalaria herb with root is further widened.