142results about How to "Good anti-fog effect" patented technology

The invention provides an antifogging coating, a preparation method of the antifogging coating and antifogging glass. The antifogging coating disclosed by the invention comprises at least one crosslinking layer and at least one antifogging layer, wherein the crosslinking layer and the antifogging layer are alternatively arranged to form the antifogging coating; the crosslinking layer plated on a base is arranged at one side of the antifogging coating; the antifogging layer is arranged at the other side. The antifogging coating has the advantages of being lasting in anti-fogging performance, and good in abrasive resistance, heat resistance and resistance to water solubility. The preparation method of the antifogging coating provided by the invention is scientific and reasonable in steps, simple and feasible in technology, low in cost and wide in application range. The antifogging glass provided by the invention has an excellent anti-fogging effect when the light transmittance is ensured.

The invention belongs to the technical field of metal surface cleaning treatment, and more particularly relates to an environmental-protection type multifunctional efficient acid washing acid inhibition corrosion inhibitor, which is formed by mainly compounding 2-6 parts of a surfactant, 8-15 parts of a corrosion inhibitor, 0.5-1 part of a penetrating agent, 2-4 parts of an acid washing accelerating agent, 74-87.5 parts of water, and other components, wherein the product achieves the optimal mist inhibition corrosion inhibition effect in the acid washing through the synergy effect of various components. The corrosion inhibitor of the present invention has the following beneficial effects that: (1) the rust removing is fast, the rust removing speed is significantly increased with the additions of the penetrating agent and the accelerating agent, and the rust can be completely removed within 5-30 min when the addition amount is 2%; (2) the mist inhibition property is good, and the good mist inhibition effects are provided for hydrofluoric acid, nitric acid, and the like; and (3) the corrosion inhibition is good .

The invention discloses polyurethane cured acrylic resin anti-fogging and abrasion-resistant paint and a preparation method thereof. The paint is prepared from the following components in parts by weight: 130-190 parts of hydrophilic acrylic resin, 210-525 parts of blocked polyether-isocyanate used as curing agent and 2.00-5.00 parts of butyltin dilaurate used as catalyst, wherein the blocked polyether-isocyanate curing agent uses polypropylene glycol and isophorone diisocyanate as raw materials. The preparation method of the paint comprises the following steps: reacting to obtain polyether-isocyanate prepolymer and then reacting with methyl ethyl ketoxime used as sealing agent. The test result shows that the paint prepared by the method has high anti-fogging property, good transparency and abrasion resistance and low production cost; and under the premise of ensuring the good anti-fogging property of the paint, the surface wear resistance can be increased and the application prospectis wide.

The invention relates to a cooling tower supporting facility, in particular to a cooling tower fog dispersal and water collection device which consists of cool air supply systems, a condensing system, a mixed air bellow and an air intake regulating device. Each cool air supply system consists of a refrigerator, a refrigeration exchanger, an axial flow fan, a variable-diameter air duct and an air collection box. The condensing system is composed of cool air passages, cool air passage partitions, water collection and air guide blades, dry and hot air discharge holes, heat exchange and condensation partitions, damp and hot saturated gas passages, water distribution and collection tanks, a water collection tank and a water tank. The air intake regulating device is composed of a planar plugging plate, a support, a hinge shaft, air outtake regulating plates, a regulating rod and regulating nuts. All the above components are combined to form the cooling tower fog dispersal and water collection device. The requirements on technical difficulty in fog dispersal and water collection under air temperature conditions in different seasons and at air pressure values in different-altitude regions are met, unnecessary waste of a single power supply mode is avoided, production and use cost are lowered, and requirements of environmental protection policies for fog dispersal and water collection and energy conservation and emission reduction under the new situations are met.

The invention relates to a thermoplastic starch-polyvinyl alcohol fogging-resistance film which is prepared from the following raw materials in parts by weight: 60 to 70 parts of thermoplastic starch, 40 to 60 parts of polyvinyl alcohol, 25 to 40 parts of compound plasticizer, 5 to 15 parts of cross-linking agent, 5 to 10 parts of antifogging agent, 0.5 to 1 part of titanium dioxide and 1 to 2 parts of other additives; the compound plasticizer is combination of glycerinum, diethanol amine and citric acid, wherein the weight ratio of the lycerinum to the diethanol amine to the citric acid is 1:1:1 to 2:2:1. The thermoplastic starch-polyvinyl alcohol fogging-resistance film provided by the invention has a good antifogging effect, high transparency and excellent water resistance and mechanical property, can be completely biodegraded, can be produced by using a traditional plastics processing equipment, and is simple and easy to process and easy to popularize, and the degradation period is short.

The invention discloses a concentrated antifogging glass cleaning agent. The concentrated antifogging glass cleaning agent comprises the following components in percentages by weight: 10 to 30% of a surfactant, 0.1 to 2% of a chelating agent, 0.1 to 2% of a surface film-forming agent and 0 to 25% of an organic solvent, with the balance being deionized water, wherein the surface film-forming agentis at least one selected from the group consisting of polyvinylether-polypropylene ether block modified polydimethylsiloxane, polyvinylether modified polydimethylsiloxane, polypropylene ether modifiedpolydimethylsiloxane, sodium polyacrylate, polyvinyl alcohol and hydroxypropyl methylcellulose; and the surfactant, the chelating agent and the surface film-forming agent can be coordinatively mixedand dissolved with the need of only a small amount of an organic solvent or without the need of an organic solvent. Thus, the concentrated antifogging glass cleaning agent has good surface cleaning effect and antifogging effect, can greatly reduce the emission of VOC, and is more environment-friendly.

The invention relates to an anti-fogging agent containing nanosilicon dioxide. The anti-fogging agent comprises the following components by mass percent: 50-99% of nanosilicon dioxide hydrosol, 0.02-40% of silane coupling agent, 0.001-30% of surfactant, 0.01-5% of curing accelerator, 0.001-2% of stabilizer, 0-10% of alcohol solvent and 0-10% of inorganic acid. A preparation method of the anti-fogging agent comprises the following steps: stirring and mixing the nanosilicon dioxide hydrosol, the silane coupling agent, the curing accelerator and the stabilizer, and sufficiently reacting; adding a mixture of the surfactant and the alcohol solvent, and stirring for 0.5-4 hours; regulating pH by using the inorganic acid to obtain the nano anti-fogging agent with the pH of 8-10. The anti-fogging agent has a good anti-fogging effect; through addition of the silane coupling agent and the curing accelerator, the anti-fogging agent has better bonding firmness and lasting bonding effect; and the preparation method is simple in process, low in cost and convenient to use.

The invention discloses a preparing method of a glass antifogging coating, and belongs to the technical field of coating material preparations. The preparing method comprises the steps of firstly preparing an ethanol solution and methyltrimethoxysilane to a silane coupling agent solution, then preparing nanosilicon dioxide to nanosilicon dioxide sol, conducting a reaction between the nanosilicon dioxide sol and the silane coupling agent solution to prepare reaction liquid, using acetone to scrub a glass base material, afterwards, conducting ultrasonic cleaning and etching processing on the glass base material, conducting soaking and curing processing on the glass base material by using the reaction liquid to obtain a glass after coating processing, then using 1H,1H,2H,2H-Perfluorooctyltrimethoxysilane and absolute ethyl alcohol to soak the glass, and finally taking out the glass and drying the glass so as to obtain the glass antifogging coating. According to the preparing method of the glass antifogging coating, the glass antifogging coating has a strong hydrophobic characteristic and a strong self-cleaning ability; meanwhile, the coating has good durability and strong adhesive force; in addition, the coating good antifogging performance, under the vapor environment, completely no fogdrop adheres to the surface of the coating glass, thus the use value of the glass is sharply improved, and the glass antifogging coating has a broad application prospect.

The invention relates to an anti-haze mask special for a child and belongs to the field of daily life protective articles of people. The anti-haze mask special for the child is composed of a silica gel mask, filer installing seats, a PM2.5 filter, fixing belt fasteners, an exhalation valve, a cover body, an inhalation valve, a filter layer and filter cotton. The cover body is arc-shaped and symmetrically provided with the filer installing seats, the exhalation valve and the inhalation valve are installed on the filer installing seats, the PM2.5 filter and the filter cotton are installed on the inhalation valve, and the fixing belt fasteners are installed on two sides of the cover body. The anti-haze mask adopts a structure that an exhalation channel, the filter and an inhalation channel are separated, flows are smooth, a user breathes smoothly after wearing the mask, the face adhesion effect and sealing effect are good, inhaled air is completely filtered and then is inhaled into a human body, the anti-haze effect is good, and the anti-haze mask is special for the child to wear. The problem that an existing anti-haze mask does not tightly attach to the face of the user, is poor in anti-haze effect and enable the user to feel oppressed and uncomfortable after being worn for a long period of time.

The invention relates to a preparation method of a hydrophilic polymer anti-fog coating. The method comprises the following steps: immersing an activated base material in a mixed solution of a silanecoupling agent and a catalyst, coating a obtained silane coupling agent modified base material with the mixed solution of a hydrophilic monomer and an initiator, and initiating free radical polymerization through ultraviolet light or heat. The coating obtained through the method has good transparency and anti-fog performance, and the light transmittance in the visible light wavelength range is about 100%.

The invention discloses anti-fog and haze fiber with a photocatalytic effect and a preparation method thereof, and relates to the field of air purification. The size of the anti-fog and haze fiber with the photocatalytic effect is 300 to 800 nm. Te preparation method of the anti-fog and haze fiber comprises the following steps: (1) preparing titanium dioxide sol, adding a graphene solution in thetitanium dioxide sol, and uniformly stirring; (2) dissolving a polymer in an organic solvent, magnetically stirring, adding a mixed solution obtained in step (1), a silane coupling agent and a hyperdispersant in sequence, then carrying out ultrasonic dispersion for a certain time, thus obtaining a uniformly mixed spinning solution in certain concentration; (3) adding the spinning solution obtainedin step (2) in a spinning container, extruding the spinning solution from a spinneret orifice through an injection pump, drafting under the propelling of high-speed airflow and the action of thermalradiation, and volatilizing a solvent, thus forming the anti-fog and haze fiber with the photocatalytic effect. A test verifies that the obtained anti-fog and haze fiber has excellent fog and haze resistance and an excellent antibacterial effect.

The invention provides a super-hydrophilic anti-fogging coating. The super-hydrophilic anti-fogging coating comprises 25-35% of modified acrylic emulsion, 6.8-10% of nano silicon dioxide, 25-30% of water, 5.6-8% of film-forming additives, 3.2-5% of dispersing agent, 5.5-7.5% of defoaming agent, 1-1.8% of levelling agent, 2.5-4.7% of titanium dioxide and 3.4-4.7% of surfactant, wherein the modified acrylic emulsion is obtained through emulsion polymerization of styrene, methyl acrylate, trimethyl silane, a vinyl monomer containing N atoms and polyvinyl alcohol. The super-hydrophilic anti-fogging coating has good adhesion, water resistance and continuous anti-fogging property, is environment-friendly and has low toxicity.

The present invention provides an anti-fogging polyethylene film master batch and a preparation method thereof. The anti-fogging polyethylene film master batch comprises, by weight of mLLDPE, (1) 100% of mLLDPE, (2) 1-4% of a water-soluble polymer, (3) 5-10% of an anti-fogging agent, and (4) 1-3% of an mLLDPE graft. According to the present invention, the metallocene linear low density polyethylene graft and the water-soluble polymer in the master batch are combined, such that the anti-fogging agent easily forms suitable absorption, migration and slow-release channels so as to achieve a slow migration rate, increase an anti-fogging agent utilization effect and prolong an anti-fogging period; and the master batch has good processability, and can be blended with the special greenhouse film resin according to any ratios so as to blow the wide greenhouse film, and the anti-fogging lasting period can be more than 30 months.

The invention discloses a hydrochloric acid washing corrosion and fog inhibition accelerator for a hot-rolled plate. The accelerator comprises the following components in percentage by weight: 5 to 10 percent of sodium benzoate, 5 to 10 percent of dodecylphenol polyoxyethylene ether, 10 to 15 percent of hexamethylene tetramine and 65 to 75 percent of divalent tin salt reducing agent. By the hydrochloric acid washing corrosion and fog inhibition accelerator for the hot-rolled plate, corrosion and fog can be efficiently inhibited, and acid washing speed can be greatly improved.

The invention belongs to the field of material chemistry, and mainly provides an antifogging resin optical lens and a preparation method thereof. The antifogging agent is prepared from a pre-sol (synthesized from acrylic acids, acrylates, acrylamide, an initiator and a silane crosslinking agent), a heteropolyacid hardening agent, and an alcohol or ketone solvent. The preparation method comprises the following steps: synthesizing the pre-sol, preparing an antifogging agent, pretreating a resin optical lens, coating the antifogging agent on the lens, and curing. The antifogging resin lens prepared by the method has the advantages of favorable antifogging performance, excellent light transmittance, excellent frictional resistance and longer service life.

The invention relates to an anti-fog / anti-frost coating based on a cationic polyelectrolyte copolymer, and a preparation method of the anti-fog / anti-frost coating. The anti-fog / anti-frost coating is prepared from 3-50% of poly(dimethylaminoethyl methacrylate-co-fluoroalkyl methacrylate)-b-cationic polyelectrolyte, 0.3-20% of oligo-ethylene glycol dimethacrylate, 0.05-0.5% of photoinitiator and thebalance of solvent. 2-(dimethylamino)ethyl methacrylate, fluoroalkyl methacrylate and methacryloyloxyethyl trimethyl ammonium chloride are used as raw materials; a block polymer is synthesized by using a reversible addition-fragmentation chain transfer polymerization method; polymers of different countra-ions are obtained by means of ion exchange and are taken as main components of the coating; the oligo-ethylene glycol dimethacrylate is used as a crosslinking agent, and a film is formed by cross-linking and solidifying the oligo-ethylene glycol dimethacrylate and a substrate by means of ultraviolet (UV) light. The prepared coating realizes a hydrophilic-hydrophobic balance, has good stability under the premise of guaranteeing excellent anti-fog / anti-frost performance, and realizes anti-fog / anti-frost long-term effect.

The invention discloses a nanometer antifogging film for fruits and vegetables and a preparation method of the nanometer antifogging film. The nanometer antifogging film for the fruits and vegetablesis prepared from the following components in parts by weight: 96-99 parts of LDPE (low-density polyethylene), 1-3 parts of an antifogging agent and 0.05-0.25 parts of nano-titania. The preparation method comprises the following steps: the raw materials are subjected to melting and granulating by a double-screw extruder, obtained masterbatch and LDPE in a certain proportion are subjected to secondary granulation, and finally, anti-fogging masterbatch is obtained; the antifogging masterbatch is subjected to film pressing by a press vulcanizer, and the nanometer antifogging film for the fruits and vegetables is prepared. The obtained nanometer antifogging film for the fruits and vegetables adopts a simple process, has good antifogging effect, helps prolong the storage period of the fruits andvegetables, and can be widely applied to packaging and preservation of various fruits and vegetables.

A snow goggle device includes a composite lens and a spectacle frame fastened to a periphery of the composite lens. The composite lens includes a multi-layer sheet, a protective sheet spaced apart from the multi-layer sheet, and a combining layer connecting the multi-layer sheet and the protective sheet. The multi-layer sheet includes an anti-UV layer, an anti-fog layer, and a photochromic layer, the latter two of which are respectively disposed on an inner surface and an outer surface of the anti-UV layer. The photochromic layer has an adjustable transmittance that is changed when a UV light travels through the photochromic layer. The anti-UV layer can reflect a UV light to the photochromic layer. The multi-layer sheet, the protective sheet, and the combining layer jointly define an air layer that is configured to slow down the transference of an outer temperature of the protective sheet to the multi-layer sheet.

The invention relates to an anti-fogging film and a preparation method thereof. The anti-fogging film comprises a PET (Polyethylene Terepthalate) base material, wherein an anti-fogging layer is arranged on the PET base material; the thickness of the anti-fogging layer is 5 to 20 microns; a protective film is arranged on the anti-fogging layer; the thickness of the protective film is 25 to 35 microns; the lower part of the PET base material is bonded with release paper through a viscose glue layer; the thickness of the release paper is 20 to 30 microns, wherein the anti-fogging layer is prepared from the following raw materials in parts by weight: 0.5 to 1.0 part of nano-titanium dioxide and 0.5 to 5 parts of polyurethane acrylate. The anti-fogging film prepared by the invention is obvious, lasting and effective in anti-fogging effect, has favorable machining properties and heat stability, has no special requirements on a matrix, is high in surface light transmissivity, strong in adhesive power and wide in range of application, and can be applied to surfaces of multiple matrixes of glass, metal, ceramic and the like.

The invention provides an electronic video laryngoscope with anti-mist function. The laryngoscope comprises a bracket component, an arc oropharynx air duct and spatula assembly, an image shooting component, a cell box and a display, wherein the arc oropharynx air duct and spatula assembly is positioned on the front end of the bracket component; the image shooting component is positioned at the lower part of arc oropharynx air duct and spatula assembly; the image shooting component comprises a camera and an illuminating lamp; the display can be rotatably arranged on the rear end of the bracket component; the camera is connected with the display through a data wire; the cell box is connected with the illuminating lamp, the camera and the display through electric wires. The electric video laryngoscope also comprises a cell kit which can also be used as an operation handle; the cell box is arranged in the cell kit; the cell kit is arranged on the side of the bracket component; the camera and the illuminating lamp are arranged on the front end of a cavity of the image shooting component; and an optical protective lens applied with anti-mist antireflection coating is fixed on the top end of the cavity of the image shooting component. The electric video laryngoscope can effectively shorten the handle length, can be operated conveniently, has lower requirement on operation experience of a doctor, and has excellent anti-mist effect.

The invention discloses an environment-friendly clean water-based automobile cleaning agent, which comprises the following components: disodium fatty acid amido sulphosuccinate, fatty alcohol-polyoxyethylene ether sodium sulfate, limonene and deionized water. The invention further discloses a preparation method of the cleaning agent. The environment-friendly clean water-based automotive cleaning agent disclosed by the invention has the advantages of simple preparation process, low production cost, good deterging effect, natural and non-toxic components and good biodegradability, and meets the requirements for high efficiency and environmental friendliness.

The invention relates to an anti-haze adsorbent which comprises the following materials in parts by weight: 80-90 parts of activated carbon, 0.2-0.3 part of ammonium bicarbonate, 6-8 parts of zeolite powder, 0.5-0.8 part of triene tetramine, 2-3 parts of tetragonal sulfate lepidocrocite, 10-15 parts of molecular sieve 5A, 2-3 parts of a polyvinyl acetal glue solution, 2-4 parts of coal ash, 2-4 parts of carboxymethylcellulose, 1-1.3 parts of allyl cyclodextrin, 130-150 parts of a 1 Mol / L sodium hydroxide solution, 140-160 parts of a 1 Mol / L calcium chloride solution, a proper amount of water, and 3-5 parts of an assistant. The adsorbent has an excellent adsorption effect on harmful gases, peculiar-smell air, and smoke of cigarettes, can inhibit bacteria at the same time, has excellent adsorbing and blocking effects on PM2.5, has an excellent anti-haze effect, and is suitable for a respirator. The adsorbent provided by the invention can prevent skin allergy, helps to refresh, and improves the filtering performance.

The invention provides a PET heat-sealing film coating antifogging agent, a PET antifogging easy-to-uncover film and a preparation method and application thereof. The antifogging agent comprises the following components in percentage by mass: 8-11% of acrylic acid grafted modified polyester polyol; 2-4 % of hexamethylene diisocyanate; 3-5% of acetone; 3-4% of dimethylolpropionic acid; 1.5-3.5% of 3-allyloxy-2-hydroxy-1-sodium propanesulfonate salt; 1.1-2.2% of maleic anhydride; 2.5%-3.5% of isopropyl alcohol; 2.0-3.5 % of ethylene glycol; 0.1-1.0 % of an initiator; 0.2%-1.2% of a catalyst; 0.3%-0.5% of a defoaming agent; 1.5-2.5 % of palm wax anti-sticking agent; 0.5%-1.0% of a SiO2 anti-sticking agent; and 60-70% of soft water. The antifogging agent adopting the components has a good antifogging effect, and also has good heat sealing strength with a PET box body, so that the effect of easy uncovering is achieved; and the environment-friendly requirement is met.

The invention relates to a vertical mist eliminator. The vertical mist eliminator comprises a vertically-arranged cylinder, wherein the vertically-arranged cylinder is connected with a gas entering pipeline and a gas exhaust pipeline. A mist eliminating motor is arranged on the bending position of the gas entering pipeline. A mist eliminating fan blade is arranged on an output shaft of the mist eliminating motor. An outer drainage pipe is arranged on the outer side of the cylinder. A plurality of inner damping plates and a plurality of outer damping plates are arranged inside the cylinder, wherein the inner damping plates and the outer damping plates are intervally arranged. The inner damping plates are provided with circular inner backwater tanks, wherein the circular inner backwater tanks recess downward. Outer backwater tanks are arranged between the side edges of the outer damping plates and the inner wall of the cylinder, wherein the outer backwater tanks recess downward. With the present invention, the induced draft fan is adopted to absorb the water mist and the tail gas purified by the water mist from the gas entering pipeline; with the mist eliminating fan blade, the water mist hits the high speed centrifugation shunt blades and is coagulated into the water; the water and the gas are subjected to rechanneling and multiple friction rolling on the positions tightly close to the inner wall of the cylinder, and then hit the inner damping plates, the outer damping plates and the inner wall of the cylinder, the water is discharged by the drainage pipe after coagulating, and the gas is discharged by the gas exhaust pipeline. According to the vertical mist eliminator, the mist eliminating effect is significant, and the flow rate of the air flow is not affected.

The invention discloses an anti-fog glass and a preparation method thereof, wherein the anti-fog glass comprises a hydroxylated glass substrate, a cross-linking layer, an anti-fog layer, and a protection layer prepared by a hydrogel solvent replacement method. According to the present invention, the anti-fogging performance test results show that the anti-fog glass of the present invention has significant anti-fogging effect, and cannot produce fog for a long time compared with the untreated glass substrate; and the light transmittance test results show that the anti-fog coating has little effect on the light transmittance of the glass product, and even the sample coated with the multiple anti-fog coatings can still maintain a light transmittance of more than 90%.

The invention relates to a biaxially-oriented polypropylene anti-mist film with five-layer coextrusion and a manufacturing method thereof. The anti-mist film comprises an upper layer, an upper sublayer, a middle layer, a lower sublayer and a lower layer and is in a five-layer structure, wherein the upper layer is prepared from the following materials in percent by weight: 93-99% of co-polypropylene, 0.5-5% of anti-mist agent and 0.5-2% of anti-blocking agent; the upper sublayer is prepared from the following material in percent by weight: 100% of anti-mist agent; the middle layer is prepared from the following materials in percent by weight: 95-99.5% of homo-polypropylene and 0.5-5% of anti-mist agent; the lower sublayer is prepared from the following material in percent by weight: 100% of anti-mist agent; and the lower layer is prepared from the following materials in percent by weight: 92.5-98.5% of co-polypropylene, 0.5-5% of anti-mist agent and 1.0-2.5% of anti-blocking agent. The biaxially-oriented polypropylene anti-mist film not only has good transparency, heat-sealing strength and printing effect, but also has excellent and durable anti-mist property, so that the service life is effectively prolonged.

The invention discloses a multifunctional anti-haze carbon fiber screen window which comprises two grid layers and an anti-haze filter layer. Frames are arranged at the edges of the two grid layers and are provided with magnetic suction strips, the two grid layers are combined with each other via the magnetic suction strips to form an integral body with a gap, the anti-haze filter layer is arranged in the gap and is a blind window, the blind window comprises a plurality of bind window strips, and the blind window strips comprise a plurality of overlapped adsorption and filter layers. The multifunctional anti-haze carbon fiber screen window has the advantages that the blind window can be opened and closed and can rotate under the control, and accordingly the multifunctional anti-haze carbon fiber screen window can be regulated in a 'ventilation and light transmittance' mode and a 'haze filter' mode; liquid drop and dust particles in haze can be adsorbed and filtered by the multifunctional anti-haze carbon fiber screen window to the greatest extent, and accordingly the quality of indoor air can be effectively guaranteed; the multifunctional anti-haze carbon fiber screen window can be regulated in the ventilation mode according to different air conditions, and is good in light transmission in excellent weather environments.

The invention relates to a special mask for preventing haze, and belongs to the field of protective appliances for everyday life of people. The special mask comprises a silicone face mask, filter mounting seats, PM.2.5 (Particulate Matter 2.5) filters, fixed belt fastening parts, exhalation valves, a mask body, inhalation valves and filtering layers; the mask body is arc-shaped, and the filter mounting seats are symmetrically mounted on the mask body; the exhalation valves are mounted on the cover body at the upper parts of the filter mounting seats; the inhalation valves and the PM2.5 filters with the filtering layers are mounted on the filter mounting seats; the fixed belt fastening parts are movably mounted at two sides of the mask body. According to the special mask for preventing the haze, the structure that an exhaling channel, filters and an inhaling channel are separated is adopted, and thereby, smooth airflow is ensured, a user can breathe smoothly after wearing, the mask can fit the face well, the sealing effect is great, the inhaled air can be completely filtered before entering a human body, and as a result, good haze preventing effect is realized. With the adoption of the special mask for preventing the haze, the problems of the existing haze mask that the mask cannot tightly fit the face of a people, obvious haze preventing effect is not realized, and people feels oppressed and uncomfortable after long-time wearing, can be solved.

The invention discloses an anti-fogging toughened antibacterial cast polypropylene food packaging film. The anti-fogging toughened antibacterial cast polypropylene food packaging film is a co-extrusion cast composite film and comprises a corona layer, a core layer and a heat-seal layer in sequence from outside to inside, wherein the corona layer, the core layer and the heat-seal layer are made from polypropylene; the heat-seal layer is prepared from the following raw materials of a polypropylene random copolymer, metallocene polyethylene and a blend macromolecular antimicrobial containing epsilon-polylysine. The blend macromolecular antimicrobial is prepared by a blending reaction of the epsilon-polylysine and polyvinyl alcohol in the existence of a plasticizer and water and drying. In theantibacterial barrier polyethylene packaging film, by introducing the blend macromolecular antimicrobial, the number of hydrophilic groups on the surface of the heat-seal layer can be increased, so that on the premise of not adding an anti-fogging agent, the anti-fogging effect of the heat-seal layer is good at a temperature close to 0 DEG C. The invention further discloses a preparation method of the anti-fogging toughened antibacterial cast polypropylene food packaging film.

The invention provides a nano glass antifogging agent and a preparation method thereof. The nano glass antifogging agent comprises effective components and water. The effective components comprise an anionic surfactant, a non-ionic surfactant, a nano photocatalytic active substance, an active agent stabilization additive, an organic acid solvent and a volatilization dispersant. In the preparation process, the organic acid solvent and the volatilization dispersant are mixed with partial water so as to obtain solution A; the anionic surfactant is mixed with the non-ionic surfactant so as to obtain solution B; the active agent stabilization additive is added to the solution B, the solution is uniformly mixed, then the solution A is added, and the rest water is added after uniformly mixing, the nano glass antifogging agent is obtained after uniformly mixing. The preparation method is capable of stably dispersing the nano photocatalytic active substance into a carrier solvent, using the super-hydrophilic property and nano adhesiveness thereof, and using own specific ultraviolet shielding and the decomposing and removing of harmful gases in the air as the function extension of the nano glass antifogging agent, and obtaining the nano glass antifogging agent with the long-term stable antifogging effect and the possible functional recovery after long-term use.