74results about How to "Ensure safety and environmental protection" patented technology

The invention discloses a high gloss and high abrasion resistant water-based overprinting varnish and a preparation method thereof. The overprinting varnish comprises the following components: deionized water, water-soluble solid acrylic resin, non film-forming material, film material, ammonia water, water-soluble emulsion wax, wetting and leveling agent, defoaming agent and thickener. The overprinting varnish of the invention uses water as solvent; when the overprinting varnish is used, only water is volatilized, thus the overprinting varnish is environmentally friendly; and the overprinting varnish does not contain heavy metals and can pass through the volatile organic compound (VOC) detection, thus being a safe and green product. The product of the invention uses water-soluble acrylic emulsion as the main matrix which combines with water-soluble solid acrylic resin, thus the safety and environmental friend of the product can be further ensured; and by adopting the special raw material combination, the product has good printing and glazing effects, high transparency and lustrousness and excellent wear resistance and is color-fast and scratch resistant; and after printed and glazed, the product has good water resistance and is not easy to scratch.

The invention discloses a reaction kettle, device and method for testing the solubility of natural gas under high-temperature and high-pressure conditions. The reaction kettle comprises a kettle body and a heating device, wherein the kettle body is internally divided into a dissolution reaction cavity and a gas pressurization cavity, the gas pressurization cavity is internally divided into a pressurization cavity I and a pressurization cavity II, and a buffer cavity is formed in the pressurization cavity I; a high-pressure sealing piston is arranged in the pressurizing cavity II to divide the pressurizing cavity II into a first pressurizing cavity II and a second pressurizing cavity II; the dissolution reaction cavity is provided with a gas sampling port, a temperature sensor, a pressure sensor and a liquid inlet/outlet; the pressurizing cavity I is provided with an air source inlet, a one-way valve I is arranged in the air source inlet and connected with the buffer cavity, the buffer cavity is connected with the dissolution reaction cavity through an air outlet pipe I, and a one-way valve II is arranged on the air outlet pipe I; and the buffer cavity is connected with a first pressurizing cavity II through a gas outlet pipe II, spacer fluid is arranged in a second pressurizing cavity II, and a pressure-bearing liquid inlet is formed in the second pressurizing cavity II. The device can accurately measure solubility of natural gas under high temperature and high pressure.

The invention provides a safe, healthy and environmentally-friendly conductive ink and a preparation method thereof. The conductive ink comprises, by weight, 5-20 parts of conductive carbon black, 30-40 parts of a natural polymeric water-based ink binder, 30-40 parts of water, 0-0.5 part of a humectant and 0-0.5 part of a preservative. The natural polymeric water-based ink binder and water are adopted as main components of the conductive ink, so the safety and the environmental protection of the conductive ink are ensured, the production cost of the conductive ink is reduced, and a problem that existing conductive inks cannot be applied to teaching as a teaching aid due to toxic components and high cost is effectively solved.

The invention provides a preparation method of hollow carbon nanospheres. The method includes the steps that carbon nanosphere particles are provided as a precursor; the carbon nanosphere particles (CSs) with the same mass and different particle sizes are put into a muffle furnace to be roasted; residues generated after roasting are the target product. By means of the method, preparation of the hollow carbon nanospheres which have complete sphere bodies and are good in monodispersity and capable of being stably stored is achieved, wherein the particle size of the hollow carbon nanospheres is 100-1000 nm, and the wall thickness of the hollow carbon nanospheres is 10-500 nm and is uniform and controllable. No organic solvent or toxic reagent is added in the whole preparation process, no template is needed, and the preparation method is very simple in technology and high in controllability and repeatability; besides, precursor materials are wide in source and low in price, and thus the production cost is low; moreover, the preparation method is environmentally friendly and suitable for large-scale production.

The invention discloses an environment-friendly anti-tearing toughening modified silicon PU flame-retardant plastic material which comprises an aqueous coating layer, an anti-tearing toughening modification layer, a shock absorption silicon PU elastic layer and a seal primer layer from top to bottom in sequence, wherein the aqueous coating layer is sprayed or brushed on the anti-tearing toughening modified layer. According to the environment-friendly anti-tearing toughening modified silicon PU flame-retardant plastic surface layer disclosed by the invention, as the anti-tearing toughening modified layer is designed and used on the shock absorption silicon PU elastic layer, the overall anti-tearing property and the toughness of the plastic surface layer are effectively improved, and the mechanical property of the plastic surface layer is effectively improved; due to design and application of a formula of the aqueous coating layer, on one hand, the infiltration property of the aqueous coating layer to plastic is improved, and on the other hand, no toxic organic solvent is released, so that the safe and environment-friendly property of the plastic surface layer is ensured, and the material is safe and reliable to use.

The invention relates to a perm agent and a preparation method thereof. The perm agent is prepared from the following raw materials in percentage by weight: 5 to 11 percent of L -cysteamine hydrochloride monohydrate, 3 to 8 percent of ethanolamine, 1 to 5 percent of urea, 1 to 5 percent of propanetriol, 0.05 to 0.3 percent of water-soluble wool fat, 0.05-0.4 percent of water-soluble silicone oil and the balance of purified water. The perm agent and the preparation method thereof provided by the invention have the following beneficial effects: as a feed-grade raw material is used, the production process is safe and pollution-free, and accordingly safety and environment-friendliness of the product are guaranteed from the source, and thus the perm agent has no adverse affects on atmosphere, ecotope and users after being used. The perm agent is colorless and odorless liquid, without being covered by essence, which is added just for embellishment, and no foreign odor residual is caused after perm of hair. The perm effect, especially a hair tail effect, is favorable regardless of any hair quality. Curled hair after perm has elasticity, good luster degree, smooth hair quality and natural curling degree.

The invention discloses a preparation method of 4-(tert-butyl 1-piperazinecarboxylate-4-yl)aniline. The preparation method of the 4-(tert-butyl 1-piperazinecarboxylate-4-yl)aniline comprises the following steps that aniline, piperazine-1-tert-butyl formate and acridine salt photocatalysts are added into a solvent; illumination reaction is performed under the condition of oxidizing agent existence;the 4-(tert-butyl 1-piperazinecarboxylate-4-yl)aniline is generated. The preparation method of the 4-(tert-butyl 1-piperazinecarboxylate-4-yl)aniline has the advantages that the 4-(tert-butyl 1-piperazinecarboxylate-4-yl)aniline is synthesized in one step; on one hand, the synthesis path of the 4-(tert-butyl 1-piperazinecarboxylate-4-yl)aniline is effectively shortened; the generation of by-products is effectively reduced; the target product yield is improved; on the other hand, only photocatalysts and oxidizing agents are used, so that the preparation method is safe and achieves an environment-friendly effect; the cost is low.

The invention provides a four-stroke outboard engine oil composition capable of satisfying NMMA FC-W specification, which comprises the following components by weight percentage: 0.5-1.3% of antirust agent, 0.02-0.10% of friction improver, 2.0-4.5% of purification dispersant, 0.2-0.8% of anti-oxidant, 1.0-2.0% of oxidation and corrosion inhibitor, 6.0-15.0% of viscosity index improver, 0.1-0.3% of pour-point depressant, 0.001-0.005% of antifoaming agent and the balance of synthetic base oil. The four-stroke outboard engine oil composition has excellent lubricity, cleanliness and anti-rust property, can satisfy the requirements of smog corrosion test prescribed by NMMA FC-W and 115HP GPET stand test, and can reach the requirement of the national marine manufacturers association NMMA FC-W specification.

The invention belongs to the technical field of foundation treatment construction, and relates to a collapsible foundation immersed tube pile forming treatment method. When a collapsible loess foundation is treated through immersed tube compaction piles, when shrinkage cavities occur after immersed tubes are pulled out, a long spiral drilling machine is adopted for conducting rotary excavating on retracted soil in holes for secondary soil discharging, and the beneficial effects of being good in hole forming effect and high in construction work efficiency are achieved. Meanwhile, due to secondary soil discharging after shrinkage cavity treatment, the compaction degree of soil between the piles is reduced, foundation soil is wet and soft and large in water content, and in order to make up for the compaction effect of the soil between the piles and improve the water content of the foundation soil, a filler ramming scheme of the next procedure is adjusted into a pile forming construction method including lime soil backfilling, heavy hammer ramming, layered filler filling and layered ramming. Due to the fact that lime is used for filler adding, the cost of the pile forming method is properly increased compared with a plain soil backfilling ramming pile forming scheme, the construction efficiency of the pile forming method is the same as that of the plain soil backfilling ramming pile forming scheme, and meanwhile the beneficial effects of being good in pile forming effect and effectively improving the foundation soil property are achieved. Compared with the scheme I, the scheme II and the scheme III in the prior art in the third part of the invention, the secondary hole forming and pile forming scheme has the beneficial effects of being economical, efficient, safe, environment-friendly and applicable.

The invention provides a chlorine-doped titanium dioxide/carbon porous structure and a preparation method thereof. The preparation method comprises the steps of calcining TiO2/zinc alginate colloid for 0.2-4 h at the temperature of 400-600 DEG C in the argon atmosphere to obtain a TiO2/C porous structure; and uniformly mixing and grinding the TiO2/C porous structure and NH4Cl, and calcining at the temperature of 300-500 DEG C for 0.2-4 hours in an argon atmosphere to obtain the chlorine-doped titanium dioxide/carbon porous structure. The specific surface area is increased by constructing the porous structure, the subsequent Cl doping process is facilitated, and finally uniform and high-proportion doping of Cl in the TiO2/C porous structure is achieved; and the Cl-doped TiO2/C porous structure prepared by the invention is green and nontoxic in raw material and low in price, the battery performance is improved on the premise of ensuring safety and environmental protection, the production cost is reduced, and the Cl-doped TiO2/C porous structure is suitable for large-scale production.

The invention discloses a hot-melt pressure-sensitive adhesive, relating to the technical fields of chemistry and chemical engineering. The hot-melt pressure-sensitive adhesive comprises the following compositions in parts by weight: 30-40 parts of light-colored liquid resin, 90-100 parts of a styrene-vinylidene segmented copolymer, 4-5 parts of a mixed plasticizer, 2-5 parts of an antioxidant N-dibutylamino zinc dithiocarbamate and 9-10 parts of a filling agent. According to the hot-melt pressure-sensitive adhesive, the light-colored liquid resin is introduced as thickening agent resin, so that the disadvantages that domestic petroleum resin is high in price, and raw materials are not regenerable are solved, the use levels of a softening agent and a viscosity modifier are reduced, and the cost is further saved; furthermore, the preparation process is easily controlled, the emission of pollutant is completely avoided, the safety and the environmental friendliness are guaranteed, a green production idea is realized, and various indexes can meet various performance requirements of the hot-melt pressure-sensitive adhesive in which rosin resin is utilized as the thickening agent.

The invention discloses a portable teaching blackboard for teachers. The portable teaching blackboard comprises a writing board, an erasing disc, an electric storage block, a height adjustment seat, atransmission disc, a movable erasing frame, a connecting plate, a sliding erasing plate, dust collection discs, a dust storage bin, a dust filter net, a magnet block, an erasing cotton, a suction fan, a motor, a driving belt, a plug-in magnetic slot, a telescopic column, a mounting ring, a sliding groove, a locking ring and a sliding column. The portable teaching blackboard has the beneficial effects that when the portable teaching blackboard is in use, the motor drives the movable erasing frame by the driving belt to move back and forth on a writing frame so that the sliding erasing plate onthe movable erasing frame can quickly erase chalk characters on the writing board, time and labor are saved, and when the movable erasing frame moves on the writing board, falling dust can be rapidlycollected by the dust collection discs on the two sides of the sliding erasing plate, dust is sucked into the dust storage bin through the suction fan to be prevented from falling to air so as to cause environmental pollution, it is ensured that the human body does not inhale dust, using safety is ensured, the device is convenient to operate, and components are flexible in connection.

The invention discloses a microbial furniture formaldehyde eliminating liquid which comprises the following components in percentage by weight: 10<5>-10<8>cfu/L, 5-12% of a sterilizing agent, 2-6% of a penetrant, 20-40% of a flavoring substance and 60-80% of a solvent. The microbial furniture formaldehyde eliminating liquid is specifically prepared by the following steps: (1) putting the sterilizing agent, the penetrant and the solvent in a container and uniformly stirring to obtain a mixed liquid; (2) putting microorganism in the mixed liquid and fermenting for 2-6 hours at 35-60 DEG C to obtain a semi-product; and (3) adding the flavoring substance at normal temperature and uniformly stirring and mixing to obtain a microbial furniture formaldehyde eliminating liquid finished product. The microbial furniture formaldehyde eliminating liquid disclosed by the invention is environment-friendly, safe, non-toxic and harmless, has a good removal effect on formaldehyde and is aromatic in odor and suitable for indoor use.

The invention relates to luminous rubber particles. The luminous rubber particles are characterized by being prepared from, by mass, 100% of EPDM, 30% of plasticizer, 55% of filler, 8% of fine materials, 4% of accelerator, 2% of vulcanizing agent and 2% of pigment. According to the luminous rubber particles, on the premise that it is guaranteed that the luminous EPDM rubber particles are safe and environmentally friendly, creative improvement on physical performance is conducted. The luminous EPDM rubber particles have the advantages that in a darker environment, the luminous EPDM rubber particles can give out light and soft noctilucence when the luminous EPDM rubber particles are exposed to light to correspond to the color of the EPDM particles themselves.

The invention relates to the field of membrane material preparation, in particular to a membrane material containing organic silicon. The film material comprises a film layer and an adhesive layer, wherein the film layer is prepared from the following raw materials in parts by weight: 60-70 parts of polyolefin, 18-25 parts of elastomer, 5-10 parts of antistatic agent, 4-8 parts of antioxidant, 2-6 parts of cross-linking agent, and 10-14 parts of silicone resin. The film material containing the organic silicon is safe and environment-friendly, has excellent thermal stability, aging resistanceand antistatic property, and can be widely applied to various fields.