34results about How to "Avoid premature decomposition" patented technology

The invention relates to a foam two-sided adhesive tape, which belongs to the technical field of an adhesive tape. The foam two-sided adhesive tape comprises a foam basal plate, an adhesive coating and a release film, wherein longitudinal through holes are formed between the upper surface and the lower surface of the foam basal plate, the foam basal plate comprises the following components in parts by weight: 100 parts of PMMA, 28 to 35 parts of polyurethane, 18 to 23 parts of fluorine rubber, 1.5 to 3.2 parts of light stabilizer, 5 to 11 parts of mesoporous nano TiO2 and 20 to 30 parts of foaming agents. The longitudinal through holes are formed in the foam basal plate, so that adhesive forms a complete lattice system, the connection performance of the adhesive tape is improved, and the connected object is more stable and reliable. The foam basal plate which is light in weight, good in shock resistance and excellent mechanical performance is adopted as the base material of the adhesive tape, so that the prepared adhesive tape is high in strength, good in flexibility, high in impact resistance and applicable to the manufacturing of more precise instruments and equipment.

The invention provides a steamed vermicelli roll manufacturing method and a low-temperature fine rice milk grinding machine. The steamed vermicelli roll manufacturing method includes the steps that rice is washed clean; the rice is soaked in a low-temperature environment; rice milk is generated through rice grinding in the low-temperature environment; starch is added into the rice milk, the starch and the rice milk are stirred to form mixed rice milk; water is added into the mixed rice milk for dilution to form pre-made rice milk; the pre-made rice milk is placed in a steamer to be heated till the rice milk is fully steamed, and steamed vermicelli rolls are formed; by means of a forming technology, the steamed vermicelli rolls are shaped into expected shapes. The method is characterized in that during rice milk grinding, crushed ice and/or ice cakes and/or ice water are/is added into a millstone. By means of the low-temperature rice milk grinding mode, the situation that temperature is too high and accordingly the rice milk is heated when the rice is ground is avoided, the situation that rice milk precursors become early steamed is prevented, and the taste of the steamed vermicelli rolls is better.

The invention relates to an automobile air duct and a preparation method, especially to a hollow blow-molded micro-foamed automobile air duct material and a preparation method thereof. The material ofthe invention comprises the following components, by weight: 50-80 parts of polyethylene, 0-15 parts of mineral powder, 1-30 parts of polyester, 0.2-1 part of a tackifier, 0.5-10 parts of a foaming agent, 5-15 parts of a blowing promotor, 0.2-0.5 part of a lubricant, and 0.2-0.5 part of an antioxidant. The invention also discloses the preparation method of the material. The hollow blow-molded micro-foamed automobile air duct has the characteristics of high cell density and good apparent quality. An automobile engine hood product prepared by the material has the characteristics of light weight, good heat insulation effect, good dimensional stability, high yield and the like. Under the condition that the whole weight of the product is reduced by more than 40%, the normal assembly and use ofparts are not affected, and the purpose of lightweight is achieved.

The invention relates to a tool box and a preparation method thereof, and particularly relates to a hollow blow-molded micro-foamed tool box and a preparation method of the tool box. The material related to the invention comprises the following components in parts by weight: 60-90 parts of co-polypropylene, 5-30 parts of melt-blown polypropylene, 0-20 parts of a filler, 1-20 parts of a modifier, 0.5-12 parts of a foaming agent, 1-10 parts of a foaming auxiliary agent, 0.5-2 parts of a lubricant, 0.2-1 part of an antioxidant and 0.2-1 part of a light stabilizer. The invention discloses the preparation method of the hollow blow-molded micro-foamed tool box. According to the invention, the tool box with a fine micropore structure is obtained. The anti-sagging property and the transverse stretching performance of the polypropylene melt in a blow-molding and micro-foaming process are effectively improved, the requirements of free regulation of wall thickness distribution of the product is met, the smooth operation of the polypropylene hollow blow-molding micro-foaming process is ensured, and the product has a significant characteristic of light weight. The tool box provided by the invention also has excellent dimensional stability, anti-dropping performance and anti-shocking performance. The preparation method provided by the invention has the advantages of shorter forming period, low manufacturing cost, high product qualification rate and easy realization of industrialization.

A livestock feeder assembly is provided that comprises an outer frame having an open interior, whereby the feeder is adapted to support hay bales in an elevated condition and above the ground for livestock to feed upon. Within the interior of the outer frame is a plurality of inwardly directed support bar members, wherein the members are secured together by way of a chain or tether at their inner distal ends. The support bar members support one or more bales of hay above the ground, whereby the height of the bales can be adjusted by updating the distance from the inner distal ends of the members. Overall, the assembly supports hay above the ground to reduce premature decomposition, and provides openings in the frame for livestock to access the hay for consumption. Different sizes, shapes and configurations of the outer frame are contemplated.

The invention provides a chemical crosslinked polyethylene insulating plastic for a submarine cable. The chemical crosslinked polyethylene insulating plastic comprises the following components in parts by weight: 100 parts of polyethylene, 1.0-3.0 parts of peroxide, 0.02-2 parts of a compound antioxidant and 0.1-2 parts of a lubricant. Appropriate peroxide and antioxidant system are adopted, so that advanced decomposition of the peroxide can be effectively prevented when a submarine cable material is processed into cables; no local high-temperature phenomenon in the processing process is ensured by addition of the lubricant; the processing property and the burning resistance of the material are improved in common; the applicability of a chemical crosslinked modified material is improved; the manifestation of traditional chemical crosslinked modified polyethylene in manufacturing of the submarine cable is changed; the pre-crosslinked phenomenon is inhibited from the source; and the continuous driving time of the submarine cable in the manufacturing process is prolonged.

The invention relates to a micro-foaming tool kit material and a preparation method thereof and in particular relates to a micro-foaming tool kit capable of silk printing and blow molding and a preparation method of the micro-foaming tool kit. The micro-foaming tool kit comprises the following components in parts by weight: 70-90 parts of polyethylene, 5-15 parts of ultrahigh-flowability polyethylene, 0-10 parts of filler, 1-10 parts of polar modifier, 1-5 parts of compatilizer, 1-15 parts of toughening agent, 1-10 parts of foaming agent, 3-15 parts of foaming auxiliary and 0.5-2 parts of other auxiliaries. In addition, the invention discloses a preparation method of the micro-foaming tool kit. The micro-foaming tool kit disclosed by the invention is fine and smooth in molding foam hole, high in foam hole density, smooth and uniform in surface, capable of uniformly smearing and spreading a paint, abundant in texture, strong in silk printing paint adhesive strength, free of dropping after being proved by adhesion force tests, capable of meeting a silk printing requirement of the tool kit and also capable of meeting silk printing of various types of printing ink and also has the characteristics such as lightweight, good buffering effect, good dimensional stability, short molding period and high finished product qualified rate.

The invention relates to a method for the production of molding compounds FM having improved optical and color properties, comprising a polymer PM, which includes units of the formula (I), where R1 and R2 are hydrogen and methyl, and R3 is hydrogen, C1-C18-alkyl, C5-C8-cycloalkyl, C6-C10-aryl, and C6-C10-aryl-C1-C4-alkyl, said groups being substitutable by up to three times with groups selected from the group consisting of C1-C4-alkoxy and halogen, produced in a generally known imidization reaction in a reaction extruder, an amount of one or more phosphorous compounds P having a reducing effect, which amount is effective for color stabilization, being added to the polymer PM after conclusion of the imidization reaction, characterized in that the phosphorous compounds are organic phosphorous compounds OP, selected from the group consisting of the compounds of formula (II), where R4 and R5 are hydrogen or an aromatic 6-member ring independent of each other, which may be substituted up to 5 times with a C1-C4-alkyl and/or C5-C8-cycloalkyl group. Molded bodies obtained according to the method, particularly optical fibers, have a low tendency toward yellowing under thermal load, together with low haze (cloudiness) and stable and high transparency.

The invention relates to a method for inducing the accumulation of stilbenes resveratrol, polydatin and pterostilbene in grape leaves, grape stems and grape fruits. The method comprises related methods for preparation of a hydrogen peroxide inducer, spraying treatment of in-vivo and in-vitro materials of grapes and impregnation treatment of the in-vitro materials of the grapes. According to the technical scheme, increase of stilbene content of the materials can be effectively, specifically and comprehensively induced, and the method has the characteristics of safety and convenience for large-scale application to township enterprises with rich grape resources, and is easy to operate. The quality of the grapes can be improved, grape planting waste can be comprehensively utilized, and grape trees can resist pathogenic bacteria to a certain extent to reduce loss caused by diseases.

The invention discloses a manufacturing method of mirror oriented silicon steel. The manufacturing method of the mirror oriented silicon steel comprises the steps that molten iron is smelted, one or more elements of Sb, Sn, P, Cu and Bi are added in the smelting process, and after the molten steel is refined and poured, a plate blank is obtained; after the plate blank is heated to 1320 DEG C-1400DEG C, the plate blank is hot-rolled, and a hot-rolled plate is prepared; the hot-rolled plate is normalized; the hot-rolled plate after being normalized is cold-rolled, and a cold-rolled plate is obtained; the cold-rolled plate is decarburized and annealed, during decarburizing and annealing, the carbon content in the cold-rolled plate is reduced to below 30ppm, meanwhile, a SiO2 oxide layer is formed on the surface of the cold-rolled plate, the oxygen adhering amount of the cold-rolled plate is controlled to be less than 500ppm, and the reduction time is controlled to be greater than 100 seconds; the decarburized and annealed cold-rolled plate is dried and annealed with magnesium oxide as an isolating agent; and the dried and annealed cold-rolled plate is heated to 1170-1250 DEG C at a preset heating rate for high temperature annealing.

A method of forming an A site deficient thin film manganate material on a substrate from corresponding precursor(s), comprising liquid delivery and flash vaporization thereof to yield a precursor vapor, and transporting the precursor vapor to a chemical vapor deposition reactor for formation of an A site deficient manganate thin film on a substrate. The invention also contemplates a device comprising an A site deficient manganate thin film, wherein the manganate layer is formed on the substrate by such a process and is of the formula La_xM_yMnO₃, where M=Mg, Ca, Sr, or Ba, and (x+y)<1.0, and preferably from about 0.5 to about 0.99.

The invention discloses polyethylene wax with inner and outer lubrication performances. The polyethylene wax is prepared from the following raw materials: 95kg to 105kg of polyvinyl chloride, 3kg to 4.5kg of a calcium-zinc compound stabilizer, 1.5kg to 2.5kg of an acrylate copolymer, 3.5kg to 4.5kg of chlorinated polyethylene, 0.2kg to 0.5kg of a lubricant and 1.5kg to 2.5kg of titanium dioxide. The polyethylene wax is prepared through the following steps: after mixing all the raw materials, stirring and heating at temperature of 50 DEG C to 120 DEG C for 50min to 200min to obtain the polyethylene wax. Or the polyethylene wax is prepared through the following steps: uniformly mixing and stirring all the raw materials, cooling and keeping heat; pressurizing and heating and stirring and keeping warm; cooling to room temperature to obtain the polyethylene wax. The product provided by the invention pays attention to mechanical properties and surface brightness of a polyvinyl chloride hard product and is especially suitable for a high-calcium system formula. According to the polyethylene wax disclosed by the invention, the mechanical properties of a polyvinyl chloride product can be enhanced and the utilization portion of filling materials can be correspondingly increased due to an excellent coupling capability so that the surface glossiness of the polyvinyl chloride is increased. The polyethylene wax has a softening point of 102 DEG C and the viscosity of 45cps and has the inner and outer lubrication performances.

The invention provides a polyvinyl chloride-based composite material suitable for medium-high frequency sound absorption and a preparation method thereof. The polyvinyl chloride-based composite material comprises the following raw material components by mass: 100 parts of polyvinyl chloride, 3-5 parts of an organic tin stabilizer, 100-130 parts of a plasticizer, 25-30 parts of an acrylonitrile-butadiene-styrene terpolymer, 0-50 parts of diatomite and 0-4 parts of an AC foaming agent. The polyvinyl chloride-based composite material provided by the invention has excellent sound absorption performance, the average sound absorption coefficient within 1000-6300Hz is 0.2-0.35, and the polyvinyl chloride-based composite material is suitable for medium-high frequency sound absorption materials.

The invention discloses a preparation method for a compound type foaming agent, relates to a preparation method for an additive for a building, in particular to a preparation method for a foaming agent added into concrete. The compound type foaming agent is compounded from an initial product, N,N'-dinitrosopentamethylamine (DPT), diglycol and lauryl alcohol. The compound type foaming agent is prepared on the basis of the original foaming agent, substances with excellent foaming properties are added into the foaming agent, and other additives are added to achieve the effects of increasing foams, stabilizing foams and regulating. The compound type foaming agent prepared by the preparation method is verified in practical production, and has the outstanding characteristics of being great in foaming amount, small in foam loss, small in strength effect and the like. The preparation method is simple to operate, is easy to control and is relatively high in yield.

Described herein is a precursor compound of formula (I) releasing 2-acetyl-1-pyrroline and a method to release 2-acetyl-1-pyrroline from the precursor compound of formula (I)

in the form of any one of its stereoisomers, tautomers, salts or as a mixture thereof, where R¹ represents a hydrogen atom or a C₁ to C₁₀ hydrocarbon group optionally including one to three heteroatoms; X represents an amino acid, a peptide or a OR² wherein R² represents a hydrogen atom or a C₁ to C₂₀ hydrocarbon group optionally including one to three heteroatoms and n is 0 when the dotted line represents a single bond or n is 1 when the dotted line represents no bond.

The invention provides a carbon nitride-graphene composite material as well as a preparation method and application thereof. The preparation method of the carbon nitride-graphene composite material comprises the following steps: (1) mixing and stirring trithiocyanuric acid, thiourea and water, then conducting drying to obtain a block, crushing the block, carrying out heating and preserving heat to obtain sulfur-doped porous honeycomb carbon nitride; and (2) dispersing the sulfur-doped porous honeycomb carbon nitride obtained in the step (1) to obtain a carbon nitride solution, and mixing and stirring the carbon nitride solution with a graphene-HCl dispersion liquid to obtain the carbon nitride-graphene composite material. The carbon nitride-graphene composite material provided by the invention is high in specific capacity, high in surface reaction activity and strong in conductivity.

The invention discloses a manufacturing process of a chemical foaming fluorine material. The manufacturing process comprises the following steps: 1, selecting a fluorine material with good physical properties and chemical properties, and weighing for later use; 2, selecting foaming powder suitable for chemical foaming production, and weighing for later use; 3, performing master batch treatment onthe foaming powder by using molding equipment, taking EVA or low-density polyethylene as a carrier, preparing 5-10% of foaming master batch, and performing extrusion treatment at a decomposition temperature; 4, adding the foaming master batch into the fluorine material according to 0.3-3% of the addition amount of the foaming powder, and fully stirring and mixing by using stirring equipment to obtain a mixture I; and 5, aging the mixture I at 95-100 DEG C for 6-12 hours, and directly extruding the mixture I by using the molding equipment to prepare the chemical foaming fluorine material. By improving the fluorine material and the production process, the production efficiency of the foaming fluorine material is improved while various properties of the fluorine material are retained.