55results about How to "Raw material ratio is reasonable" patented technology

The invention discloses a plastic weaving bag production process and relates to the field of packing materials. The process comprises five technological processes of raw material burdening, mixing, drawing, weaving, printing-cutting and sewing. In the process method, raw material proportions in the raw material burdening process are reasonable, the performances of all the raw materials are fully played, the combined performances are greatly improved, a filling master batch adopts nano-calcium carbonate, and the mechanical properties and stability of the materials are improved; by reasonably controlling the parameters such as temperature, time and retraction ratio in the drawing process, manufactured ribbon-like filaments are excellent in quality and good in mechanical properties without being easily broken, and massive electric energy is saved by adopting a cam-combined energy-saving winding machine for winding and molding; after all steps of the weaving process, yarns are uniformly arrayed with less crossing and twisting, and a cloth surface has no wrinkles and is more attractive and reasonable in density; by reasonably controlling the needle pitch in the sewing process, the sewing direction strength of a weaving bag is high and the weaving bag has good falling performance.

The invention relates to a noodle capable of reducing blood sugar and a preparation method thereof. The noodle is composed of the following components in parts by weight: 2 to 6 parts of pumpkin powder, 3 to 5 parts of sorghum, 4 to 7 parts of buckwheat, 3 to 6 parts of wheat bran, and 72 to 85 parts of wheat flour. The noodle is prepared from pumpkin powder, sorghum, buckwheat, wheat bran, and wheat flour according to a fixed ratio; the pumpkin powder, sorghum, buckwheat, and wheat bran are natural foods, no additive is added, and the effective components and functions of pumpkin powder, sorghum, buckwheat, and wheat bran are fully utilized and combined with wheat flour to prepare the healthcare noodle, which has the advantages of reasonable and balanced nutrients, low sugar content, low cost, simple production technology, and smooth, fine, and delicious taste, and also has the functions of improving digestion, retarding the absorption of sugar in intestines, regulating the blood pressure of diabetes patients, promoting the insulin secretion of diabetes patients, and adjusting the blood sugar of diabetes patients. Moreover, the noodle will not break and the soup will not turn turbid even if the noodle has been cooked for a long time.

The invention discloses a compound fertilizer containing microelements. The compound fertilizer is prepared from the following raw materials by weight: 80-85 parts of rapeseed cakes, 40-45 parts of crop straws, 30-34 parts of tree leaves, 23-26 parts of rice husk,10-12 parts of rice straws, 10-12 parts of bamboo dust, 30-34 parts of activated carbon, 10-12 parts of chitosan, 80-90 parts of calcium magnesium phosphate fertilizer, 30-34 parts of urea, 13-16 parts of magnesium sulfate, 6-8 parts of zinc sulfate, 2-3 parts of copper sulfate, 3-4 parts of ammonium molybdate, 1-2 parts of borax, 2-3 parts of polyvinyl alcohol, 1-2 parts of sulfur, 3-4 parts of an EM microbial agent, 4-6 parts of a coating film and a proper amount of water. The fertilizer provided by the invention is an organic-inorganic special fertilizer integrating organic materials and inorganic nutrients. The prepared fertilizer contains a lot of macroelements such as N, P and K, and contains a certain proportion of medium and microelements. Meanwhile, the compound fertilizer combines the growth fertilizer requirement rule of the plants, is reasonable in raw material proportions, is more comprehensive and balanced in nutrients, and has relatively high scientificity.

The invention discloses a microbial coagulant for municipal wastewater, and relates to the technical field of wastewater treatment. The microbial coagulant is prepared from 15-25 parts of polymerization ferric chloride, 10-20 parts of sodium aluminate, 6-8 parts of sodium carboxymethyl starch, 3-6 parts of sodium silicate, 20-30 parts of nano-montmorillonite, 2-6 parts of activated carbon, 15-25 parts of iron residues, 12-24 parts of bentonite, 12-24 parts of sepiolite powder, 6-8 parts of sodium gluconate, 15-25 parts of potato starch, 10-20 parts of cellulose, 6-8 parts of protease, 3-5 parts of amino acid and 100-120 parts of deionized water. The microbial coagulant for the municipal wastewater and a preparation method thereof have the advantages that the technological process is simple, the raw material ratio is reasonable, and the raw materials are low in cost and easy to obtain; microorganisms are added, a large number of organic elements and inorganic elements are matched, therefore, the microbial coagulant is applied to domestication of microorganism in the domestic wastewater and adjustment of microorganism death caused by insufficient nutrition components or the imbalanced ratio, and the microbial coagulant is low in cost, easy to obtain, free of pollution and rich in nutrition components.

The invention discloses a preparation of pinellia decoction for purging stomach fire, its preparing method and application, wherein the preparation comprises using compound pinellia decoction as raw medicinal materials, extracting effective substances with water or ethanol, preparing powdered extract through spray drying or decompression drying, charging medicinal auxiliary materials and preparing granule through dry method palletizing or wet method palletizing, finally filling into capsule or carrying pelleting to form the tablet. The preparation has good curative effect for superficial gastritis especially gastritis caused by Helicobacter pylori, and gastric ulcer, the invention also has the advantages of easy administration and small amount of dosage.

The invention discloses a fireproof filling material used for a special cable, and relates to the technical field of cable processing. The fireproof filling material is prepared from the following raw materials in parts by weight: 50-60 parts of sandy soil, 20-30 parts of cordierite powder, 20-30 parts of mullite powder, 10-20 parts of asbestos powder, 10-20 parts of calcium carbonate, 10-20 parts of perlite, 20-30 parts of titanium dioxide, 15-25 parts of polyvinyl chloride, 13-15 parts of chlorinated rubber, 15-25 parts of phenolic resin, 15-25 parts of chlorinated paraffin, 10-20 parts of tributyl phosphate, 5-7 parts of zinc borate, 6-8 parts of aluminium borate, and 8-10 parts of a lubricant. The fireproof filling material has the benefits that the technological process is simple, the proportion of the raw materials is reasonable, the preparation method is simple, a high-quality filling agent is provided for the cable, the raw materials are easy to obtain, high temperature resistance is achieved, a certain flame retardancy is achieved, safety accidents caused by overhigh temperature of a cable core are avoided, the use effect is obvious, the reasonable use of the special cable is guaranteed.

The invention discloses a manufacturing method for a high-strength valve body. The manufacturing method for the high-strength valve body comprises the following steps of mold making, smelting, pouring, softening annealing, mechanical machining, heat treatment, passivation treatment and phosphating treatment. According to the manufacturing method for the high-strength valve body, the proportion of raw materials is reasonable, the manufacturing technology is optimized, so that the mechanical strength of the valve body is greatly improved, and meanwhile, the valve body has excellent corrosion resistance, the quality of the valve body is ensured, and the service life of the valve body is effectively prolonged.

The invention discloses a special fertilizer for grapevines. The special fertilizer is prepared from raw materials in parts by weight as follows: 10-15 parts of plant straw, 5-10 parts of animal waste, 3-5 parts of humic acid, 10-20 parts of urea, 5-15 parts of diammonium phosphate, 10-20 parts of potassium chloride, 5-8 parts of calcium superphosphate, 1-2 parts of magnesium sulfate, 1-2 parts of ferrous sulfate, 0.5-1 part of copper sulfate, 0.5-1 part of zinc sulfate, 2-3 parts of microelements and 0.1-0.15 parts of a synergist. The special fertilizer for the grapevines is comprehensive in nutrient substance, reasonable in raw material ratio and high in utilization rate, and the added humic acid can improve the soil.

The invention relates to microbial coagulant for town sewage, in particular to a town sewage curing agent and belongs to the technical field of sewage treatment. The microbial coagulant comprises 15-25 parts of polymerization ferric chloride, 10-20 parts of sodium aluminate, 3-5 parts of sodium carboxymethyl starch, 3-5 parts of sodium silicate, 60-80 parts of nano-montmorillonite, 10-20 parts of activated carbon, 60-80 parts of modified starch, 3-5 parts of glucoside, 5-15 parts of alum and 3-5 parts of calcium chloride. The town sewage curing agent has the advantages that the technical process is simple, the raw material ratio is reasonable, raw materials are cheap and available, all the raw materials play a synergistic role, various metal ions in water can be captured, meanwhile a significant corrosion and scale inhibition function is realized, scaling and corrosion of the system can be reduced effectively, production cost is lowered, suspended matters flocculate immediately and settle fast after the agent is added into sewage, and suspended matter removal rate can reach above 90%; the treated sewage is up to emission standard, floc strength is high, and hydrophobic nature is good.

The invention discloses a solid beverage capable of refreshing the brain and resisting fatigue and a preparation method thereof. The solid beverage comprises the following components in parts by weight: 10-15 parts of phyllanthus emblica extract, 5-10 parts of hawthorn extract, 1-5 parts of sea buckthorn fruit extract, 1-5 parts of pericarpium citri reticulatae extract, 5-10 parts of Chinese wolfberry extract, 10-15 parts of lactose, 5-10 parts of isomaltulose and 10-15 parts of maltodextrin. Each of the phyllanthus emblica extract, hawthorn extract, sea buckthorn fruit extract, pericarpium citri reticulatae extract and Chinese wolfberry extract is aqueous extract. The medicinal materials contained in the solid beverage disclosed by the invention are medicinal and edible substances, the phyllanthus emblica has the effects of tonifying qi, the sea buckthorn and pericarpium citri reticulatae have the effects of refreshing the brain and restoring consciousness, the Chinese wolfberries have the effect of improving eyesight, and the hawthorn has the effect of promoting digestion, so that the solid beverage achieves the effects of refreshing the brain and resisting fatigue. The invention also provides the preparation method of the solid beverage. The solid beverage is safe and effective, is free of toxicity or side effect, is convenient to carry, and is especially suitable for office workers and people needing to relieve fatigue for drinking.

The invention relates to a plant insecticide for vegetable planting and a preparation method thereof. The plant insecticide comprises, by mass, 20-25 parts of tobacco wastes, 18-23 parts of tea branches and leaves, 15-20 parts of pine branches and leaves, 12-17 parts of sweet wormwood branches and leaves, 10-15 parts of thunder god vine, 8-12 parts of dried tangerine peel, 6-10 parts of root of Stellera chamaejasme L., 2-5 parts of ginger, 1-3 parts of garlic, 3-6 parts of radix sophorae flavescentis, 4-7 parts of rheum officinale and 5-8 parts of Chinese honeylocust fruit. The preparation method has simple processes, a reasonable raw material ratio and a low cost, and utilizes easily available raw materials which are pure natural, have no pollution, do not contain non-chemical components,do not damage the human body and have no side effect. The plant insecticide does not influence the planting, has good absorption effects and obvious effects, is easy to promote and use and has a goodmarket prospect.

The present invention discloses radix puerariae nutritional powder and a preparation method thereof, and belongs to the technical field of food. The radix puerariae nutritional powder is prepared from the following raw materials in parts by weight: 1,000-2,000 parts of radix puerariae starch, 200-300 parts of Chinese yams, 200-300 parts of rhizoma polygonati, 200-300 parts of red dates, 200-300 parts of lotus seeds, 200-300 parts of semen euryales, 200-300 parts of longan pulps, 200-300 parts of poria cocos, 200-300 parts of raspberries and 1,000-2,000 parts of honey. The radix puerariae nutritional powder is prepared by using the radix puerariae powder as main body, and combining various medicinal and edible homogenously Chinese herb medicines of the Chinese yams, rhizoma polygonati, red dates, lotus seeds, semen euryales, longan pulps, poria cocos, raspberries, etc., so that the radix puerariae nutritional powder has efficacies of nourishing yin for moistening dryness, moistening lungs and tonifying stomach, lowering sugar and lipids, dispelling alcohol, lowering cholesterol, clearing heat and relieving toxins, and causing diuresis and relaxing bowels, and at the same time is free of antibacterial agents, preservatives and other chemical additives, natural and environmentally protective, and free of any toxic or side effects.

The invention discloses a preparation method of a spicy and refreshing flavored noodle product. The preparation method particularly comprises the following steps: (1) preparation of spicy sauce; (2) preparation of a spicy outer layer semi-finished product; (3) preparation of a refreshing inner layer; and (4) preparation of the spicy and refreshing flavored noodle product: putting the spicy outer layer semi-finished product into a hollow mold, then putting the refreshing inner layer into the spicy outer layer, performing edge closing and shaping, then putting the shaped material into a stirredspraying machine, weighing a component amount of spicy sauce, putting the spicy sauce into the stirred spraying machine, opening a switch, uniformly spraying the spicy sauce on the surface of the product, and taking out the product with the spicy sauce and performing vacuum packaging to obtain the spicy and refreshing flavored noodle product with unique taste. On the basis of keeping the spicy flavor of the original flavored noodle product, the delicious and refreshing inner layer part is added; the preparation method is simple, the raw material proportioning is reasonable, the cost is low, and the raw materials are easy to obtain; the used raw materials are purely natural and pollution-free and are free of any additive or preservative; and vacuum packaging is adopted, so that the spicy and refreshing flavored noodle product is sanitary and healthy.

The invention discloses a safe nontoxic fruit cleaning agent, relating to the technical field of chemical cleaning agents. The safe nontoxic fruit cleaning agent is prepared from the following raw materials in parts by weight: 8-10 parts of glycerin monocitrate, 8-12 parts of sodium hydroxide, 8-10 parts of triethanolamine oleate, 7-9 parts of soya bean lecithin, 2-4 parts of potassium sorbate, 6-10 parts of ethanol, 5-7 parts of starch, 6-8 parts of thickener, 50-60 parts of deionized water, 5-7 parts of table salt and 10-14 parts of fresh spinach leaves. The safe nontoxic fruit cleaning agent disclosed by the invention has the following beneficial effects: the process flow is simple, the raw materials are reasonably proportioned, and the adopted raw materials are all antibacterial active substances harmless to a human body; the prepared cleaning agent has the effects of harmlessness to hands, fresh smell and no toxicity or harm; and in daily use, the cleaning agent can be used for removing stains from fruits and moreover is harmless and nontoxic, thus achieving high market value and facilitating promotion and application.

The invention provides a quick-drying type primer-topcoat coating and relates to the technical field of chemical coating preparation. The quick-drying type primer-topcoat coating is prepared from the following raw materials: 60-80 parts of water-based acrylic resin, 20-30 parts of amino resin, 6-8 parts of coloring pigment, 10-20 parts of a filler, 8-10 parts of a de-foaming agent, 6-8 parts of a leveling agent, 120-130 parts of de-ionized water, 6-8 parts of nanometer titanium dioxide, 5-7 parts of maleic anhydride, 8-10 parts of ethanol and 15-25 parts of curing powder. The quick-drying type primer-topcoat coating provided by the invention has the benefits that the technological process is brief, the raw material ratio is reasonable, the water-based acrylic resin and the amino resin are adopted as main materials and work together with other auxiliaries during use to obtain the quick-drying type coating, the curing speed is higher, the coating can be completely cured in 6-8 minutes at the temperature of 80-90 DEG C after being sprayed, quickness and high efficiency are realized, and the popularization and the use are convenient.

The invention provides antirust primer for ships, and relates to the technical field of chemical coating preparation. The antirust primer is prepared from the following raw materials: 15-25 parts of acrylic resin, 15-25 parts of alkyd resin, 10-20 parts of chlorinated rubber, 8-10 parts of chlorinated paraffin, 6-8 parts of silica sol, 5-7 parts of zinc powder, 3-5 parts of sodium-based bentonite, 1-3 parts of aluminum triphosphate, 3-5 parts of modified nano-montmorillonite powder, 1-3 parts of methyl cellulose and 5-7 parts of nano organic silicone emulsion. The antirust primer for the ships has the beneficial effects that the technological process is simple, and the raw material ratio is reasonable; the acrylic resin and the alkyd resin are taken as main materials and are combined with the chlorinated rubber, the zinc powder and other auxiliary agents for use, so that the obtained antirust primer is high in tolerance, not easy to peel off, good in antirust ability and rapider in curing speed; after the antirust primer is sprayed onto the ships, the ships are enabled to be safe for a long time in seawater; the antirust primer is fast and efficient to use, thus being convenient to popularize and use.

The invention relates to the technical field of preparation of school supplies, in particular to natural waterborne paint ink. The natural waterborne paint ink is made from, by weight, 15-25 parts of natural pigments, 3-5 parts of polygonum multiflorum, 2-4 parts of bletilla striata, 3-5 parts of indigo naturalis, 6-8 parts of mint, 3-4 parts of surfactants, 5-7 parts of soluble starch, 8-10 parts of color fixatives, 30-40 parts of deionized water and 5-7 parts of vegetable oil. The natural waterborne paint ink has the advantages of simple technical process, reasonable raw material ratio, avoidance of chemical component addition, nontoxicity and harmlessness due to adoption of herbaceous raw materials, functions of fragrance increase, oxidation resistance and corrosion resistance due to adoption of edible and medicinal herbaceous plants, functions of foaming, emulsification, dispersing, moistening and the like, synergy of the raw materials for preparation of the environment-friendly paint ink, safety, environment friendliness, naturality, freeness of heavy metals, high cost performance, low cost, fragrance and thick color.

A fast -drying bottom coating, specifically a self -dry polyurethane anti -static paint.Involved in the field of chemical coatings preparation technology, the following raw materials are made of: 60‑80 copies, 50‑70 copies of polyurethane of glycopic acid, 3‑5 cobalt -cobaltate, 4 to 6 copies of solid fatty acid zinc, 6‑8 nylon 6‑8Severe, 3 to 5 copies of acrylate, 5‑7 parts of nano -zinc oxide, 80 to 90 parts of tailphenols, 1 to 3 parts of organic silicon, 6 ‑, 3 to 5 parts of silicon dioxide, and 3 to 5 parts of stems.Titanium dioxide 5‑7 parts, asphalt 3‑5 parts, nano -oxide dioxide 5‑7 parts, 6‑8 part of sulfuric acid, 35‑45 aluminum emulsion, and 220‑230kg of removal water.The beneficial effect of the present invention is: the process of the present invention is simple and the raw material ratio is reasonable. It uses acrylic polyurethane and alcohol -polyurethane as the main material, with the use of paraffin emulsion and the remaining aids, to obtain self -dry coatings, faster solidification, faster, and faster.After spraying, it can be completely solidified by 5 ,7 hours at normal temperature, fast and efficient, and easy to promote and use.

The invention discloses an ultrathin silver flat ribbon, and relates to the technical field of production of bonding leads. The ultrathin silver flat ribbon is mainly manufactured from silver and an accessory, wherein the ratio of the silver to the accessory is 99.99: 0.01; and the accessory comprises the following raw materials in parts by weight: 1-3 parts of iron, 3-5 parts of copper, 1-3 parts of manganese, 2-3 parts of magnesium, 1-4 parts of chrome, 3-4 parts of titanium, 2-5 parts of beryllium, and 1-4 parts of aluminum. The ultrathin silver flat ribbon has the following beneficial effects: the process flow is simple; the raw material batching is reasonable; and as the silver and other mixed accessories are reasonably matched, and scientific and ordered steps are used for processing, prepared bonding wires are excellent in product quality and finer in fineness, are suitable for the present demands of the electronic industry, are applicable to various precise electronic devices, are excellent in use effect, and are convenient for promotion and application.

The invention provides an ultra-thin single crystal copper flat silk ribbon and relates to the field of bonding lead production technology. The silk ribbon is made of single crystal copper and auxiliary materials, wherein the ratio of platinum-rhodium to the auxiliary materials is 99.99:0.01. The auxiliary materials comprise, by weight, 0.5-1.5 parts of iron, 1.5-2.5 parts of copper, 1-3 parts of manganese, 2-4 parts of magnesium, 1-4 parts of chrome, 3-4 parts of titanium, 2-4 parts of beryllium, 3-5 parts of aluminum and 2-5 parts of zinc. The beneficial effects are that technical processes are simple and raw material ratio is proper; the bonding silk is made with the proper ratio of single crystal copper and auxiliary materials in orderly steps, so product quality is high, fineness is high, requirements in current electronic industry are met, and the silk ribbon is especially suitable for semiconductor high-power integrated circuit elements, has remarkable effects in use and is easy to promote and use.

The invention provides synthetic lubricating oil for an automobile and relates to the technical field of preparation of chemical raw materials. The synthetic lubricating oil is prepared from the following raw materials: 20-50 parts of herbal oil, 10-30 parts of mineral oil, 20-50 parts of animal oil, 1-3 parts of dodecenylsuccinic acid, 1-3 parts of molybdenum dialkyl dithiocarbamate, 2-5 parts of a methylic silicone fluid grease, 3-6 parts of polymethacrylate, 2-4 parts of magnesium sulfonate, 3-5 parts of butyl octyl diphenylamine, 10-13 parts of pentaerythritol and 7-15 parts of glyceride acrylate. The synthetic lubricating oil has the benefits as follows: the technological process is simple, raw materials are reasonably proportioned, the cost is low, raw materials are easy to obtain, animal and plant oil used in traditional lubricating oil is replaced, so that the cost is effectively reduced under the condition that the effect is not changed, and the synthetic lubricating oil is efficient, has high cost performance, a remarkable use effect and high market value and is convenient to popularize and use.

The invention relates to the technical field of photovoltaic, in particular to a novel flame-retardant plastic photovoltaic support frame. The support frame consists of the following components in parts by mass: 30-50 parts of polyvinyl chloride, 10-20 parts of polypropylene, 10-20 parts of graphene, 1-6 parts of nano silicon dioxide, 1-8 parts of calcium oxide, 2-6 parts of magnesium oxide, 2-5 parts of talcum powder, 2-4 parts of a heat stabilizer, 0.2-0.6 part of an antioxidant, 1-3 parts of maleic anhydride, 0.2-0.8 part of sodium alginate, 1-6 parts of asbestos powder, 1.2-3.2 parts of aflame retardant and 0.2-0.8 part of an anti-cracking toughening agent. The novel flame-retardant plastic photovoltaic support frame disclosed by the invention is reasonable in raw material proportionand has easily available raw materials; tensile strength of the plastic photovoltaic support frame is improved through addition of the graphene and the nano silicon dioxide are added; and meanwhile, the calcium oxide, the magnesium oxide, the talcum powder, the heat stabilizer, the antioxidant, the asbestos powder and the flame retardant are added, so that the flame-retardant grade of the plasticphotovoltaic support frame is greatly improved, and use safety of the plastic photovoltaic support frame is effectively improved.

The invention belongs to the technical field of material preparation, and discloses a lightweight high-strength hard alloy material and a preparation method thereof. The lightweight high-strength hard alloy material is prepared from the components in parts by mass: 6-8 parts of titanium, 1-2 parts of carbon, 3-6 parts of zirconium, 2-5 parts of silicon, 1-4 parts of copper, 2-3 parts of nickel, 2-3 parts of manganese, 1-2 parts of iron, 1-2 parts of niobium and 1-3 parts of chromium. The lightweight high-strength hard alloy material provided by the invention is reasonable in raw material ratio, and has the advantages of low production control difficulty and low production cost, and is beneficial to reducing the material preparation cost; in the preparation of the lightweight high-strength hard alloy material, carbon is one of effective strengthening elements for ensuring that the alloy material obtains high strength and high hardness, the strength and the hardness of steel can be remarkably improved, ferrite can be prevented from appearing in a quenching structure, and the produced high-strength alloy is high in hardness, light in weight and capable of meeting the diversified requirements of the market.

The invention discloses a high-elasticity sealing matrix for a cable and relates to the technical field of cable processing. The high-elasticity sealing matrix is prepared from, by weight, 30-40 parts of epoxy resin, 20-30 parts of acrylic resin, 30-40 parts of polyurethane resin, 60-80 parts of white oil, 15-25 parts of limestone, 25-35 parts of chlorinated paraffin, 10-20 parts of lauric acid dibutyl tin, 80-100 parts of montmorillonite powder, 100-200 parts of asphalt, 15-25 parts of talcum powder, 60-80 parts of bentonite, 40-60 parts of kaolin, 10-20 parts of sodium polyacrylate, 3-5 parts of a modifier and 6-8 parts of a reinforcing agent. The high-elasticity sealing matrix and the preparation method have the advantages that the technical process is concise, raw materials are cheap and easy to get; an anti-adhesion powder composition prepared by the method can directly act on the outer wall of a cable inner jacket, and the high-elasticity sealing matrix is hard in texture, elastic, good in rebound performance, less prone to aging and cracking, easy-to-get in raw material, low in cost and simple to process.

The invention relates to a cable coating flame-retardant composite material, and relates to the technical field of cable processing. The material is prepared from the raw materials of, by weight, 750-760 parts of a potassium silicate solution, 25-35 parts of a lithium hydroxide water solution, 120-130 parts of siliceous lime, 9-11 parts of polyphenylene sulfide, 6-8 parts of graphite, 15-25 parts of polytetrafluoroethylene, 4-6 parts of a xylene agent, 8-10 parts of titanium dioxide, and 3-5 parts of a mildew-proof agent. The method has a simple process flow. The material has a reasonable raw material formula, and has chemical corrosion resistance and flame retarding performance. The overall mechanical properties of the material are ensured. The cost of the materials is low, such that the material is suitable for popularization.

The invention discloses a blocky pipeline dredging agent and a preparation method thereof, and aims to solve the problem that the pipeline dredging agent is lost from a notch of a blockage. The dredging agent is characterized by comprising a dredging agent body, and the dredging agent body is prepared from, by weight, 50-65% of granular sodium hydroxide, 10-12% of baking soda, 10-15% of anhydrouscitric acid, 0.2-0.5% of polyethylene glycol 6000, 2-5% of sodium carbonate, 2-4% of a surfactant and 0.5%-1% of glycerol. The above components are mixed, are sucked into a briquetting machine througha vacuum suction machine and are briquetted to make the dredging agent body blocky. The gap of the pipeline in a semi-blocked state can be blocked, the pipeline dredging agent body is prevented fromlosing from the gap, waste of the pipeline dredging agent body is avoided, meanwhile, the reaction time of the pipeline dredging agent body is prolonged, the pipeline dredging agent body can be fullydissolved, and blockages are dispersed under the action of decomposition, foaming, swelling and the like, so the pipeline is dredged.

The invention relates to precoated sand for a molten metal characteristic analysis sample cup. The sample cup made of precoated sand is used for containing metallic solution and measuring the characteristics of the metallic solution, and belongs to the technical field of casting. The precoated sand is prepared from the following raw materials: crude sand, a binder, a solidifying agent, a plasticizer and a lubricating agent, ad is characterized in that the using amount of the solidifying agent is 40-50% that of the binder, the using amount of the binder is 3-5% that of the crude sands, the using amount of the plasticizer is 1-5% that of the binder, and the using amount of the lubricating agent is 0.1-0.5% that of the crude sand. The precoated sand has the beneficial effects that the raw material ratio of the precoated sand is reasonable, the high temperature resistance of the precoated sand is enhanced remarkably, particularly, aluminum phosphate for the binder has a high-temperature binding function, aluminum dihydrogen tripolyphosphate has a flame resistance effect, graphite powder has a function of enhancing the strength of a carbon framework subjected to resin combustion, aluminum phosphate, aluminum dihydrogen tripolyphosphate and the graphite powder are harmonized, the high temperature resistance of the sample cup is improved, the sample cup is not cracked, delaminated and subjected to sand dropping within four minutes after molten metal is poured, and the cast molten metal instantaneous analysis technical requirement can be met.