39results about How to "Guaranteed non-toxic" patented technology

The invention discloses a gingko planting method and belongs to the technical field of traditional Chinese medicine planting. The method comprises the steps of 1) land selection and preparation including land selection, fertilizer application, land leveling, ploughing and bedding; 2) seedling cultivation including seed collection, breeding nursery garden construction and seedling planting: 3) transplantation and planting including seeding hole digging, fertilizer application, transplantation at a male-female ratio of 95:5, soil covering and watering; 4) field management including intertillage, topdressing, pruning and pollination; 5) insect and disease prevention. According to the gingko planting method, during the leveling process, acid modifier composed of vinegar residue and decomposed straw fertilizer is applied, so that gingko can be planted and grow in saline-alkali soil, and further compared with the situation that saline-alkali soil is unsuitable for growth of gingko in the prior art, the gingko planting method widens the gingko planting area. The gingko planting method also has the advantages of being high in emergence rate, high in seedling disease resistance and the like.

A decorative fastening aluminium-plastic plate is prepared through preparing plastic substrate from engineering plastics, filler, stabilizer, plasticizer, lubricant and assistant through mixing, granulating, extruding out, fixing shape, and cutting, preparing the coated aluminium foil through washing, removing oil, oxidizing surface, baking, painting, baking and coiling, combining said plastic substrate with aluminium foil, covering adhesive protecting film on the surface of aluminium foil, and cutting. Its advantages are high abrasion compression, fire and water resistance, good thermal and acoustic insulation, no poison and beautiful appearance.

The invention discloses a medical anti-adhesion membrane material with controllable degradation and a preparation method thereof, belonging to the field of biomedical materials. According to the invention, the membrane material is prepared by blending sodium hyaluronate and konjac klucomannan, using lactic acid as a property-modifying additive and using a mixed solution of ammonia water and anhydrous ethanol as a cross-linking agent; sodium hyaluronate is a good anti-adhesion material, but individually used sodium hyaluronate has a fast degradation speed and can not fulfill a good anti-adhesion effect; konjac klucomannan can control the degree of cross-linking, thereby realizing the goal of controllable degradation, and blending of sodium hyaluronate and konjac klucomannan enables sodium hyaluronate to be released slowly, thereby allowing the membrane material to meet demands for anti-adhesion action at different parts. The membrane material has the advantages of nontoxic degradation products, good biocompatibility, hygroscopicity and tensile properties, and the like, and can be used for intervertebral adhesion, intestinal adhesion, skin adhesion, intrauterine adhesion, etc.

The invention discloses a myrcenyl plasticizer and a preparation method thereof. The method comprises the following steps of: 1, performing a Diels-Alder reaction on myrcene and unsaturated acid (anhydride) with equal molar weight in the absence of catalyst at the temperature of between 30 and 80 DEG C for 3 to 7 hours so as to obtain an intermediate product named 4-(4-methyl-3-pentenyl)-4-cyclohexene-1,2-acid (anhydride) (MYM for short); and 2, adding a water-carrying agent into protonic acid or Lewis acid serving as a catalyst in an using amount of 0.5 to 3 percent based on the molar weight of the MYM and performing an esterification reaction on the MYM and alcohol at a reflux keeping temperature for 0.5 to 5 hours so as to obtain a target product, namely, the plasticizer. The plasticizer prepared by the method has the characteristics of nontoxicity and degradability; and a plasticized plastic has high low-temperature resistance, high tensile strength and high resistivity and can be taken as a main plasticizer in various plastics and compounded with other plasticizers.

The invention relates to an aerobic composting waste heat power generation system and a working method thereof, and belongs to the field of organic solid waste resource utilization. The system comprises a waste collection device, a main composting reaction chamber, a waste heat power generation device and a tail gas collection device, wherein a heat conduction cover is arranged at the top of the main composting reaction chamber, the upper space of the main composting reaction chamber is a waste reactor body, the lower space of the main composting reaction chamber is a leachate collection device, a filter screen is arranged between the upper space and the lower space, and the main composting reaction chamber is further connected with an aeration device; the bottom of the heat conduction cover is connected with the reactor body through a heat conduction rod; a waste heat power generation device is installed on the upper surface of the heat conduction cover and is formed by connecting a plurality of semiconductor thermoelectric power generation pieces in series, wherein the electric energy generated by the semiconductor thermoelectric power generation pieces is transmitted to an electricity storage and supply device. According to the invention, heat can be recovered from organic wastes while the organic wastes are treated, and the problem of secondary pollution caused by excessivewaste heat of traditional compost is solved.

The invention discloses novel injectable hydrogel for bone defect repair. A preparation method of the novel injectable hydrogel comprises the steps: 1, preparing bioactive glass; 2, preparing hydrazide bond-grafted collagen and modified oxidized konjac glucomannan; 3, dispersing the bioactive glass and the hydrazide bond-grafted collagen in a PBS solution to obtain a solution A; dissolving the modified oxidized konjac glucomannan in a PBS solution to obtain a solution B; and 4, mixing the solution A and the solution B to obtain the novel injectable hydrogel for bone defect repair. The novel injectable hydrogel for bone defect repair has the advantages that in-situ injection can be achieved, operation is easy and convenient, secondary injury generated by an operation is small, the hydrogel can adapt to the shape of a defect part, in-situ filling forming of the bone defect part is achieved, and the application prospect is wide.

The invention discloses a special non-toxic desiccant for food packaging and a preparation method thereof. The components of the desiccant include 20-40 parts by weight of sweet potato starch, 5-10 parts of bentonite, 5-15 parts of coconut shell powder, and natural fiber. 2-10 parts of vegetarian ingredients, 5-10 parts of tea stems, 3-8 parts of cassia seeds, 2-12 parts of ginkgo leaves, 3-10 parts of jasmine flowers, and 2-10 parts of bamboo charcoal powder, the preparation method of the invention is simple, and the prepared desiccant It has excellent hygroscopic effect. It adopts Chinese herbal medicine formula, which is non-toxic and harmless to human body, and can be widely used in the field of food processing.

The invention provides a simple, convenient and safe war horse bag. The bag comprises a bag body; the inner layer of the bag body is coated with a PE (Polyethylene) film layer; the bag body is formed by hermetically packaging a bag body front surface, a bag body rear surface, a bag body left side surface, a bag body right side surface and a secondary bag body right side surface. According to the bag disclosed by the invention, the bag body is excellent in protection performance, is waterproof and moisture-proof and also has a certain heat insulation effect; the bag is odorless, nontoxic, safe and reliable; by adopting the sealing mode and folding mode, the bag can be directly adhered manually during production; a machining mode is relatively complex, but 40% of the cost can be further saved based on the existing cost by adopting the mode of folding the bag body.

The invention discloses injectable hemostatic cryogel for promoting tissue regeneration and a preparation method and application thereof. The preparation method comprises the following steps: ultrasonically dispersing polydopamine, chitosan and collagen in deionized water, adding glacial acetic acid, and stirring until dissolving; and dissolving oxidized dextran in deionized water, adding an oxidized dextran solution into a mixed solution under vigorous stirring, transferring to a refrigerator for a reaction, and melting at room temperature to obtain the injectable hemostatic cryogel for promoting tissue regeneration. The aperture of the cryogel is 50-200 [mu] m, and the cryogel is provided with interconnected macroporous structures and stable mechanical strength, can be conveyed to a narrow and deep wound through an injector after being compressed and fixed, quickly recovers to block the wound and form a physical barrier after sucking blood, and activates a blood coagulation process through concentrated blood to achieve a hemostasis effect. The cryogel prepared by the invention has rapid shape recovery capability, injectability, good hemostatic capability and the like.

The invention relates to the technical field of chemistry, relates to a food-grade starch master batch and a preparation method thereof, and discloses a food-grade starch master batch composition anda method for preparing a starch master batch. Based on the total weight of the starch master batch composition, the starch master batch composition contains: thermoplastic starch 35-70 wt%, a matrix 8-35 wt%, a compatibilizer 2-15 wt%, a lubricant 1-5 wt%, and an auxiliary agent 0.1-1wt%. According to the food-grade starch master batch composition and the preparation method of the master batch, starch-based plastics can be used in food packaging materials, and it is ensured that the plastic properties of manufactured products are qualified, and further the environmental protection performanceof the products is improved.

The invention provides a portable war horse bag. The bag comprises a bag body; the inner layer of the bag body is coated with a PE (Polyethylene) film layer; the bag body is formed by hermetically packaging a bag body front surface, a bag body rear surface, a bag body left side surface, a bag body right side surface and a bag body bottom surface; pull threads are arranged at the corresponding positions of the side surfaces of the front and rear surfaces of the bag body; the pull threads are packaged by adopting packaging threads. According to the portable war horse bag disclosed by the invention, the bag body is excellent in protection performance, is waterproof and moisture-proof and also has a certain heat insulation effect; the bag is odorless, nontoxic, safe and reliable; by adopting the sealing mode and folding mode, the bag can be manually adhered or directly adhered during production; a machining mode is relatively complex, but 40% of the cost can be further saved based on the existing cost by adopting the mode of folding the bag body.

The invention provides a simple and convenient Zhanma bag. The simple and convenient Zhanma bag comprises a bag body. An inner layer of the bag body is covered with a layer of PE film. The bag body is formed by encapsulating a bag body front surface, a bag body back surface, two bag body side surfaces and a bag body bottom surface in a sealed mode. The bag body side surfaces are double-layer folded layers. Pull lines are arranged on the side of the bag body front surface and the side of the bag body back surface and encapsulated through an encapsulating line. The bag body front surface, the bag body back surface, the two bag body side surfaces and the bag body bottom surface of the bag body are integrally arranged. According to the simple and convenient Zhanma bag, the protection performance of the bag body is excellent, the waterproof effect and the moisture-proof effect can be achieved, and a certain heat insulation effect is also achieved at the same time; the odourless effect, the non-toxic effect and the safety and reliability effects are achieved; in addition, pasting can be directly conducted through manual pasting during production by adopting the sealing mode and the folding mode, and the complex situation caused by a machining mode is avoided; and by means of the bag body folding mode, the cost can be further reduced by 40% on the basis of the current cost.

The invention discloses an injection molding method in a power line production system. The injection molding method comprises the following steps of S1, material selecting, wherein a proper quantity of PP is selected as a raw material, and then a proper quantity of antioxygen agent and fire retardant are selected; S2, raw material inspecting, wherein the color, the grain size and the uniformity ofthe PP raw material are inspected, and the quality of the raw material is ensured; S3, drying, wherein the raw material is placed in a stirring drying box from a feeding opening, then a power switchis turned on, drying and stirring can be carried out at the same time, drying is carried out approximately for 10-15 min, and then the raw material is taken out from a discharging opening; S4, barrelcleaning, wherein the temperature of the barrel is increased to the lowest forming temperature of the PP raw material, then the PP raw material is added, continuous air injection is carried out till all residual plastic is cleaned, and the temperature is adjusted to achieve normal production. Compared with other injection molding methods, the technology price is low, space is saved, the process ismature, stress can be resisted, the work efficiency can be effectively improved, the forming effect of power lines can be improved, and safety of users can be guaranteed.