133 results about "Heat stabilization" patented technology

The invention relates to the technical field of TPU (thermoplastic polyurethane) protective films, in particular to a fluoride-free antibacterial TPU protective film and a preparation method thereof. The fluoride-free antibacterial TPU protective film comprises the following raw materials in parts by weight: 35-40 parts of TPU particles, 10-15 parts of a balance regulator, 8-12 parts of an antibacterial agent, 3-6 parts of an antioxidant, 3-5 parts of a heat stabilizer and 2-3 parts of a lubricant. According to the TPU protective film disclosed by the invention, TPU particles are matched with the antibacterial agent, the antioxidant, the heat stabilizer and the lubricant to serve as functional aids, and the balance regulator and the filling agent doped with flaky boron nitride are added to coordinate, cooperate and jointly achieve synergistic effects, so that the product is excellent in raw material interfacial compatibility, and the antibacterial property, barrier property and mechanical property of the product are improved in a coordinated and balanced manner; and the product has remarkable weather-resistant and acid-corrosion-resistant stability effects.

The invention discloses a biochar / carbon nanotube / myristic acid composite phase change material as well as a preparation method and application thereof, and belongs to the technical field of heat storage. The meat biochar / carbon nanotube / myristic acid composite phase change material is prepared by adopting a vacuum impregnation method. The original biochar is modified by KOH, so that the specific surface area and pore volume of a sample are increased, the specific surface area of the modified KBC3 reaches 813.56 m < 2 > / g, and the loading capacity of the KOH modified biochar on MA is increased to 63%. The result shows that the MA sample is successfully loaded into the porous material, and the structure is kept intact. In order to further improve the loading rate and the leakage resistance of the phase change material, carbon nanotubes are doped in the KBC / MA phase change material, and when the loading rate of MA is improved to 75%, KBC1.5 / MA severely leaks in a shape stability performance experiment, and the mass loss rate reaches 8.5%. And KBC1.5 / CNT1 / MA only has little leakage in the thermal stability test process, so that the leakage resistance of the composite phase change material is greatly enhanced. Through BC modification and CNTs introduction, the heat conduction capability and the photothermal conversion capability of the composite PCMs are greatly improved.

The invention belongs to the technical field of oilfield chemistry, relates to a thickening agent for a high-temperature-resistant salt-resistant fracturing fluid and a preparation method of the thickening agent, and particularly relates to a thickening agent for a hydrophobic association type fracturing fluid and a preparation method of the thickening agent. The thickening agent for the hydrophobic association type fracturing fluid provided by the invention is prepared by polymerizing the following monomer raw materials: an amide monomer, a carboxylic group-containing monomer, a sulfonic acid monomer and a hydrophobic association monomer. According to the thickening agent for the hydrophobic association type fracturing fluid, a functional group and a hydrophobic group are introduced through molecular design, the thickening agent and an organic zirconium cross-linking agent construct a thermal stable cross-linked network, the temperature resistance and the shear resistance at 150-200 DEG C are higher than those required by a water-based fracturing technology (larger than 50 mPa.s), and the fracturing requirements of deep reservoirs are met.

The invention discloses an alkaline xylanase mutant with improved specific enzyme activity and thermal stability and a preparation method thereof, and belongs to the field of gene engineering and enzyme engineering. The alkaline xylanase mutant M22 is provided through a semi-rational design method, and the specific enzyme activity of the alkaline xylanase mutant M22 is 211 U / mg and is improved by 181.33% compared with that of a wild type. After the mutant M22 is subjected to heat treatment at 75 DEG C for 30 minutes, the residual activity of the mutant M22 relative to a wild type is 169.30%, and relative residual activities of the mutant M22 relative to the wild type which is subjected to heat treatment at 75 DEG C for 30 minutes are 153.94%, 127.84% and 115.02% respectively after the mutant M22 is subjected to heat treatment at 80 DEG C, 85 DEG C and 90 DEG C. Compared with a wild type, the alkaline xylanase mutant M22 obtained by the invention has the advantages that the specific enzyme activity and stability are obviously improved, and the alkaline xylanase mutant M22 has higher application value and potential in industrial production.

The invention belongs to the technical field of food additives and new materials, and discloses a thermostable embedding method and application of an alpha-amylase inhibitor, and the method comprises the following steps: respectively adjusting the pH values of an alpha-AL stock solution and an iota-CG stock solution to 6, then mixing the stock solutions according to the mass ratio of alpha-AL to iota-CG of 2: 1, and carrying out heat preservation for 2-3 hours, so as to obtain the thermostable embedding method of the alpha-amylase inhibitor. According to the method disclosed by the invention, the stable ion compound is formed under the condition that the pH is equal to 6 by utilizing the electrostatic interaction and the hydrogen-bond interaction between the negatively charged sulfuric acid group in the iota-carrageenan molecule and the positively charged amino acid residue on the surface of the white kidney bean alpha-amylase inhibitor. According to the compound, stable combination among molecules is achieved by constructing a structured water molecular layer barrier, so that the tolerance of the white kidney bean alpha-amylase inhibitor to heat treatment is remarkably improved, and the defect that the heat stability of the white kidney bean alpha-amylase inhibitor is poor is overcome.

The invention relates to the technical field of high polymer materials, in particular to a preparation process of a bacteriostatic PET film. According to the invention, the defects of poor antibacterial property and poor oil stain resistance of the existing PET film are overcome. The modified PET master batch, the composite antibacterial agent, the nano filler, the modified polydimethylsiloxane, the coupling agent, the flame retardant and the ultraviolet light absorber are subjected to melt blending, extrusion and casting to obtain a film sheet; the film sheet is subjected to biaxial directional stretching, thermal stabilization treatment and hot press polishing treatment, and the antibacterial PET film is obtained. The PET master batch is prepared from pretreated PET resin and PET resin; the composite antibacterial agent comprises a rosemary extract and dodecyl dimethyl benzyl ammonium chloride; the nano filler is prepared from nano silicon dioxide, silver nitrate and the like; the modified polydimethylsiloxane is prepared from hydrogen-containing silicone oil and allyl polyether. The PET film prepared by the invention has strong antibacterial property and good oil stain resistance, and is suitable for coating kitchen ware.

The present invention belongs to the technical field of analytical chemistry, and specifically relates to a method for detecting hindered phenol antioxidants in PVC heat stabilizers. The method comprises the following steps: S1, uniformly mixing a PVC heat stabilizer sample with a non-cyclic fatty ether to form a solution with a mass percentage of not less than 5% of the PVC heat stabilizer sample; S2, heating the solution obtained in S1 at 100-150°C for a period of time. If the solution contains hindered phenol antioxidants, the color of the solution turns yellow. Compared with the prior art, the present invention can determine the content of hindered phenol antioxidants in the stabilizer through simple processing. In the process, the amount of organic solvent used is small, resources are saved, the operation method is convenient and fast, and batch processing is easy to achieve; the sample pretreatment process is simple, and only the reactants need to be simply mixed and heated, which takes a short time and is highly efficient. After adding the solvent, the target object in the stabilizer can be quickly colored without excessive manpower and material resources.

The application discloses a kind of compositions, reagents and its detection method for high-throughput gene sequencing, belong to gene sequencing technical field, the composition includes Tris-HCl buffer 80-120 parts, potassium chloride 40-60 parts, ammonium sulfate 10-20 parts, magnesium chloride 15-25 parts, dNTPs mixed solution 30-50 parts, heat-stable DNA polymerase mutant 8-15 parts, PCR promoter complex 5-12 parts, modified iridium quinoline ketone complex 1-5 parts, glycerol 150-250 parts, Tween-20 1-3 parts, EDTA disodium salt 0.5-2 parts and nuclease-free ultrapure water, by introducing the modified iridium quinoline ketone complex of innovation, effectively solve the technical problems of low amplification efficiency, poor multiplex PCR reaction uniformity and high non-specific amplification background for high GC content, complex secondary structure genomic template, significantly improve the specificity of amplification, uniformity and the quality and reliability of final sequencing data.

The invention discloses a long-acting heat-resistant stable recombinant human fibronectin and a preparation method thereof, relates to the technical field of recombinant proteins, and aims to solve the technical problem that existing recombinant fibronectin is easily hydrolyzed and inactivated in skin. According to the long-acting heat-resistant stable recombinant human chemical fibronectin, the amino acid sequence of the recombinant human chemical fibronectin is shown as SEQ ID No.3, the recombinant human chemical fibronectin is derived from natural fibronectin, and the recombinant human chemical fibronectin comprises a human chemical fibronectin binding region shown as SEQ ID No.1 and a four-segment repeated cell binding region shown as SEQ ID No.2.

The present invention relates to excipients for specific protein formulations which are suitable for improving thermal stability against denaturation and inactivation. In particular, the present invention relates to additives for thermal stabilization of vaccine formulations.

The invention belongs to the field of high polymer materials, and discloses a preparation method and an application method of a high-barrier PBAT / PHA film, and the preparation method comprises the following steps: adding a plasticizer and PHA powder into a high-speed mixer for high-speed stirring, and then adding an isocyanate chain extender and a heat stabilizer for uniform mixing. The preparation method comprises the following steps: carrying out melt extrusion by using a twin-screw extruder, carrying out air-cooling granulation to obtain modified PHA particles for later use, and carrying out high-speed stirring and premixing on an inorganic filler and a coupling agent for later use. According to the present invention, the low molecular weight PHA is subjected to chain extension treatment by using the chain extender so as to increase the mobility of the polymer molecular chain and reduce the melting temperature of the polymer, and the low molecular weight PHA is subjected to chain extension treatment by using the chain extender, such that the number of the low molecular weight PHA is reduced, the overall molecular weight of the PHA is improved, and the heat resistance processing performance of the PHA is improved.

The utility model discloses a device for stably conveying phosphoric acid to a production line by using waste heat of the production line, which is used for conveying 85% phosphoric acid in ammonium polyphosphate production and comprises a first phosphoric acid storage tank and a second phosphoric acid storage tank, the bottom of the first phosphoric acid storage tank is connected with a first acid discharge pipe, and the bottom of the second phosphoric acid storage tank is connected with a second acid discharge pipe. The device for stably conveying phosphoric acid to the production line by using the waste heat of the production line further comprises a constant-temperature hot water tank, a production line waste heat fluid pipeline and a phosphoric acid main pipe, the first acid discharge pipe and the second acid discharge pipe are respectively communicated with the phosphoric acid main pipe, and the production line waste heat fluid pipeline is connected with the constant-temperature hot water tank. A first hot water heating jacket is arranged outside the tank bottom of the first phosphoric acid storage tank, a second hot water heating jacket is arranged outside the tank bottom of the second phosphoric acid storage tank, the phosphoric acid conveying device further comprises a heat preservation water pipe and a heat preservation water return pipe, and a first pump is installed on the heat preservation water pipe; the heat preservation water pipe is communicated with the first hot water heating jacket, the second hot water heating jacket and the constant-temperature hot water tank, the heat preservation water return pipe is communicated with the first hot water heating jacket, the second hot water heating jacket and the constant-temperature hot water tank, a second pump is installed on the output section of the phosphoric acid main pipe, and an outlet of the second pump is connected with a production line use conveying pipe. The phosphoric acid conveying device can stably convey 85% phosphoric acid to a production line.

The present invention belongs to the field of nano vaccine technology, and specifically relates to a self-adjuvanted heat-stable nano multivalent tuberculosis vaccine and its preparation method and application. The vaccine uses a self-adjuvanted heat-stable nano self-assembly scaffold protein as a carrier, and based on its ability to carry multi-component antigens on its surface, a heat-resistant multivalent tuberculosis vaccine is prepared, which can significantly improve the antigen presentation and immunogenicity of the vaccine, and also has excellent immune broad spectrum and stability, and good safety. Compared with conventional recombinant subunit vaccines, it has outstanding advantages and is very suitable for the current prevention and treatment of tuberculosis.

The utility model discloses a polycarbonate solution thermostable concentration energy-saving system which comprises a feed delivery pump and a feed concentration tank, the output end of the feed delivery pump is connected with the feed concentration tank through a pipeline, the polycarbonate solution thermostable concentration energy-saving system further comprises a concentration circulating pump and a concentration heater, the bottom end of the feed concentration tank is connected with the concentration circulating pump through a pipeline, and the concentration heater is connected with the feed delivery pump through a pipeline. The concentration circulating pump is connected with a concentration heater through a pipeline, and the concentration heater is connected with the feeding concentration tank through a pipeline; when the dichloromethane solution needs to be concentrated, the PC dichloromethane solution with lower concentration is conveyed into the feeding concentration tank through the feeding conveying pump, and the dichloromethane solution is concentrated and concentrated through the feeding concentration tank, the concentration heater and the concentration circulating pump; and the concentrated dichloromethane solution with higher concentration is conveyed into the double-paddle evaporator by the double-paddle feeding pump, so that the high-concentration dichloromethane solution is obtained, and the concentration efficiency of the dichloromethane solution is improved.

The application relates to the technical field of PET film, and discloses a conductive PET film material for a transparent antenna and a preparation method thereof, wherein the conductive PET film material comprises, from top to bottom, a copper mesh and a PET film; the PET film comprises the following components by weight: 80-90 parts of PET resin, 1-2 parts of a compatilizer, 8-14 parts of a flame retardant, 2-4 parts of an ultraviolet resistance agent and 0.8-1 part of a heat stabilizer; the flame retardant is composed of an organic phosphorus flame retardant and 4-amino-5-imidazole formamide. Through the technical scheme, the problems of poor flame retardance and ultraviolet resistance of the conductive PET film material in the related art are solved.

The application discloses a basic xylanase mutant with improved specific enzyme activity and thermal stability and a preparation method thereof, and belongs to the field of genetic engineering and enzyme engineering. The application provides a basic xylanase mutant M22 through a semi-rational design method, wherein the specific enzyme activity of the mutant M22 is 211 U / mg, which is increased by 181.33% compared with that of a wild type. After 30 min of heat treatment at 75 DEG C, the residual activity of the mutant M22 relative to the wild type is 169.30%, and after treatment at 80 DEG C, 85 DEG C and 90 DEG C, the relative residual activities of the mutant M22 are 153.94%, 127.84% and 115.02% respectively relative to the wild type treated at 75 DEG C for 30 min. The basic xylanase mutant M22 obtained by the application has significantly improved specific enzyme activity and stability compared with the wild type, and has higher application value and potential in industrial production.

A method of producing a carbon-rich material, the method comprising the steps of: a) providing a lignin bead, wherein the lignin bead comprises at least 80 wt% of lignin, based on the dry weight of the lignin bead; b) optionally heating the lignin bead to one or more temperatures in the range of 140 to 270 °C for a period of at least 30 minutes to obtain a heat-stabilized lignin bead; and c) subjecting the optionally heat-stabilized lignin bead to carbonization at one or more temperatures in the range of 300 °C to 1500 °C, wherein the carbonization is carried out for a total time in the range of 30 minutes to 10 hours, so as to obtain a carbon-rich material.

The present invention discloses a high thermal stability and low thermal conductivity zirconium oxide based thermal barrier coating and a preparation method thereof, wherein the raw materials include: 5% to 10% (Y x Sc y Gd 1‑x‑y )2O3, 10%~20% LaPO4, 1%~5% MO z , 8.6%~15.2% RE2O3, the balance is ZrO2; (Y x Sc y Gd 1‑x‑y )2O3, x =0.5~0.75, y =0.05~0.15;MO z In RE2O3, M is one or more of Mg, Ca, and In; in RE2O3, RE is one or more of Er, Sm, Dy, Yb, and Eu. The present invention modifies the components of a zirconia-based thermal barrier coating by doping and optimizes its preparation process, effectively improving the thermal barrier coating's high-temperature stability, thermal shock resistance, and sintering resistance, while reducing its high-temperature thermal conductivity.

The invention discloses a gravimeter temperature control system modeling control method, and relates to the technical field of precise instrument temperature control, and the method comprises the steps: 1, obtaining the real-time running speed of a carrier, the wind speed of an external environment, and the current temperature of a core part of a gravimeter; step 2, feed-forward compensation power is calculated based on the real-time driving speed and the external environment wind speed according to preset dynamic thermal disturbance model parameters; 3, based on the difference value between the current temperature and the preset target temperature, feedback control power is calculated through a preset feedback control algorithm; 4, superposing the feed-forward compensation power and the feedback control power to generate total control power, and outputting the total control power to control the heating actuator. Predictive disturbance compensation is achieved, temperature overshoot is effectively restrained, the thermal stabilization time is remarkably shortened, the operation efficiency is improved, the data quality is improved, the measurement reliability is enhanced, and the method is suitable for large-scale popularization and application. Practicality is high, compatibility is good, and upgrading and reconstruction are easy.

The utility model relates to the technical field of mobile phone shell detection equipment, in particular to equipment for testing a heat stabilizer in PVC (polyvinyl chloride), which comprises an L-shaped plate, a test box is fixedly mounted on the outer wall of one side of the L-shaped plate, and a moving mechanism is arranged at the top of the L-shaped plate. By arranging the mounting mechanism, during use, the PVC block is placed in the protective frame in the mounting box, the cover turning plate covers the PVC block, then the mounting box is mounted in the open slot, and the limiting column is clamped with the mounting box under the action of the spring, so that when the mounting box is fixed and dismounted, only the push block needs to be pushed, the limiting column moves, and the PVC block can be fixed and dismounted. The mounting box is convenient and rapid to mount and dismount, a worker can conveniently sample the PVC block, the dismounting and mounting efficiency is greatly improved, and meanwhile, a heat conduction block is arranged in the turning cover plate, so that heat concentration is facilitated, and the PVC block is conveniently and rapidly heated to a proper temperature.

The invention discloses a TPU (thermoplastic polyurethane) material and a preparation process. The TPU material is prepared from the following raw materials in parts by weight: 80-120 parts of TPU, 20-35 parts of a multi-effect additive, 0.2-2.5 parts of an antioxidant and 0.2-2 parts of a heat stabilizer. The preparation process provided by the invention is relatively simple, and comprises the following steps: weighing the raw material components in proportion, uniformly mixing, and then feeding into a twin-screw granulator for granulation. According to the invention, silicon dioxide, attapulgite and carbon nanotubes are preferably used, and the TPU material is endowed with excellent comprehensive performance through modification.

The application discloses a shift reactor with center pipe adjustment and a process, and relates to the technical field of carbon one chemical industry.The application sets a center pipe without catalyst loading in a single shift reactor, divides the crude synthesis gas into a reaction shift path and a bypass non-shift path, integrates the two gas flows in the same reactor, and shares a set of downstream heat recovery, cooling and separation system.The center pipe is matched with an internal / external flow regulation actuator, which dynamically adjusts the bypass gas amount according to the real-time hydrogen-carbon ratio of the outlet synthesis gas, and accurately controls the shift reaction depth.The reactor can be designed as an isothermal or adiabatic, radial or axial structure.The isothermal type relies on the tube boiler feed water to remove heat and stabilize the bed temperature, and the adiabatic type simplifies the internal heat exchange structure.The application combines the advantages of the two traditional processes of full shift and partial shift, greatly reduces the number of pipelines, heat exchange and separation equipment, reduces the engineering investment and operation and maintenance cost, has the ability to stably control the hydrogen-carbon ratio under wide load and wide raw material component fluctuation, and is suitable for the carbon one chemical industry scene of coal-to-synthesis gas, natural gas-to-synthesis gas, industrial tail gas-to-synthesis gas and then synthesis of chemical products.

The utility model discloses a lubricating property testing device for a composite heat stabilizer. The lubricating property testing device comprises a treatment box with an opening in the top, the cover body movably covers the opening end of the treatment box; the stirring assembly is rotationally arranged on the cover body, and the output end of the stirring assembly extends into the treatment box; the heating assembly comprises a mounting groove formed in the side wall of the treatment box, a coil pipe is uniformly arranged in the mounting groove in a surrounding manner, a heating medium is introduced into the coil pipe to heat the to-be-detected liquid in the treatment box, and the stirring assembly is used for stirring the to-be-detected liquid so that the to-be-detected liquid is uniformly heated. According to the device disclosed by the utility model, the coil pipes uniformly arranged in the side wall of the treatment box in a surrounding manner can be used for heating liquid to be detected in the treatment box; the to-be-detected object is stirred through the arranged stirring assembly, so that the to-be-detected object close to and far away from the coil pipe continuously exchanges positions, the to-be-detected object can be uniformly heated, and large deviation of a detection result is avoided.

The utility model relates to the technical field of protein analyzers, and discloses a protein thermal stability analyzer, which comprises a thermal stability analysis box and a protection box which are arranged on a base, the top of the protection box is rotatably connected with a box cover through a hinge, one side of the protection box is fixedly provided with a motor, and the other side of the protection box is fixedly provided with a temperature sensor. The output end, penetrating through the protection box, of the motor is fixedly provided with a two-way screw rod, the end, away from the motor, of the two-way screw rod is rotationally connected with the protection box, and the two ends of the outer surface of the two-way screw rod are in threaded connection with threaded blocks; when a sample in a test tube needs to be heated, a worker can place the test tube into the placing hole in the fixing plate, and the elastic cushion in the placing hole can extrude and fix the test tube under the action of the spring for the test tube with different sizes, so that the condition that the test tube shakes during heating is reduced, the application range of the equipment is expanded, and the test tube is convenient to use. The time waste caused by replacing different test tube fixing plates is avoided.

The invention discloses a modified ETFE material and application thereof, and the modified ETFE material comprises 90-100 parts by mass of ETFE, 0.5-2 parts by mass of an anti-ultraviolet agent, 0.2-0.6 part by mass of an antioxidant, 0.2-1 part by mass of a light stabilizer, 0.2-1 part by mass of a heat stabilizer, 0.5-10 parts by mass of modified ATO and 3-12 parts by mass of a coupling agent. The modified ETFE material provided by the invention has the characteristics of excellent mechanical strength, weather resistance, self-cleaning property and the like, also has excellent infrared barrier property, and is particularly suitable for being applied to preparation of ETFE films for high infrared barrier buildings.

The invention relates to an environment-friendly anti-rust film forming pretreatment device and technology in the field of film forming pretreatment devices, the environment-friendly anti-rust film forming pretreatment device comprises a heat preservation stirring tank, a plurality of pretreatment structures are connected to the heat preservation stirring tank, and the input end of each pretreatment structure is connected with a raw material tank; the pretreatment structure comprises a heat treatment tank, a heater is connected to the heat treatment tank, a heat insulation pipe is connected to the output end of the heat treatment tank, heat stabilization tanks are connected to the output end of the heat insulation pipe, a heat exchange pipe is connected between the multiple heat stabilization tanks, and heat exchange pieces are connected between the heat exchange pipe and the multiple heat stabilization tanks. The input end and the output end of the heat exchange pipe are both connected with guide pipes, a servo motor is installed on the heat preservation stirring tank, and a stirring structure is installed at the power output end of the servo motor, so that before multiple raw materials are stirred, the molten raw materials are easily mixed after the temperature is stabilized to the same temperature, and the stable temperature is kept for stirring in the stirring process; the heating requirement during stirring is reduced, and it is guaranteed that the raw materials are not prone to gelling in the stirring process.

The invention discloses a novel composite phase change heat storage medium and a preparation method thereof, and is characterized in that the novel composite phase change heat storage medium comprises the following substances by weight: 70-75 parts of a phase change energy storage material, 0-8 parts of a heat conduction reinforcing material, 0-15 parts of a water sealing material, 5-10 parts of a modified material, 0-20 parts of a gel material, and 0-10 parts of deionized water. On the one hand, the composite phase change heat storage medium produced through reasonable component composition under specific production and processing conditions has the advantages of being good in heat stability, free of supercooling and phase separation phenomena, large in heat storage density, high in heat conductivity, not prone to volatilization of all component materials and the like;

The invention relates to the technical field of computational toxicology, and discloses a method for calculating combination of perfluorinated and polyfluorinated alkyl compounds and PPARalpha based on a pharmacophore model, which comprises the following steps: acquiring a PFAS initial data set, acquiring a PPARalpha ligand binding domain crystal structure, and optimizing the structure; selecting representative PFAS to carry out molecular docking, and carrying out simulated annealing optimization to obtain an optimal binding posture; then generating a pharmacophore model; the models are screened; performing rigid fitting screening by using a pharmacophore model; carrying out molecular dynamics simulation on the representative hit object, and verifying the stability; protein is extracted by culturing cells in vitro, a thermal displacement experiment is carried out, and the thermal stability effect of PFAS on PPARalpha is verified. According to the method, comprehensive virtual screening of PFAS-PPAR alpha interaction based on pharmacophores is provided, a calculation framework based on protein and compound structures is established, and the method is suitable for environmental pollutant screening and safer chemical design.

The invention discloses a heat-resistant biodegradable film-making material, which is prepared from the following ingredients in parts by mass: 30 to 60 parts of modified polylactic acid, 20 to 35 parts of toughening agents, 10 to 18 parts of multifunctional modifiers, 0.4 to 1.4 parts of nucleating agents, 3 to 5 parts of plasticizers and 0.3 to 0.8 part of bio-based chain extenders. 0.3-10 parts of a composite heat stabilizer and 4-15 parts of an antibacterial agent; the modified polylactic acid is prepared from the following components in parts by mass: 35 to 50 parts of polylactic acid, 5 to 25 parts of polypropylene carbonate, 1 to 6 parts of micromolecular compatilizer and 0.2 to 2 parts of initiator. And the modified polylactic acid improves the biodegradation rate. The heat-resistant biodegradable film-making material disclosed by the invention has excellent temperature resistance, degradability, mechanical strength and toughness, can be widely applied to various industries, and has good application and market prospects. The invention also discloses a production process of the heat-resistant biodegradable film-making material.

Disclosed herein are nanorod productions systems (NPS) useful for the production of biological scalable functionalization-ready nanorods (BSFnano). The nanorods produced are derived from filamentous phage Ff (f1, M13 or fd). The NPS disclosed herein permits efficient biological production of non-infectious, heat-stable isomorphic proteinaceous nanorods comprising modifications allowing site-specific recombinant, chemical and enzymatic attachment of peptide and non-peptide functionalities in an orthogonal manner. Also disclosed are methods of making and using these nanorods, such as in methods of detecting target molecules.