62 results about "Silicone sealant" patented technology

A low-modulus, high-resilience modified alcohol-based silicone sealant, its preparation method, and its application are disclosed, relating to the field of sealant materials technology. The silicone sealant comprises the following components in parts by weight: 100 parts of α,ω-alkoxysilane ethylidene-terminated polydimethylsiloxane, 30-80 parts of plasticizer, 80-150 parts of reinforcing filler, 0.5-20 parts of silane crosslinking agent, 0.5-10 parts of silane tackifier, and 0.01-1 part of Lewis acid catalyst; wherein the plasticizer is α-alkoxysilane ethylidene-terminated polydimethylsiloxane. The low-modulus, high-resilience silicone sealant of this invention exhibits fast surface drying speed, low modulus, high elastic recovery rate, good adhesion, and weather resistance.

This invention provides an organosilicon sealant composition for anti-fog automotive lights and its preparation method. The organosilicon sealant composition for anti-fog automotive lights comprises the following components: α,ω-dihydroxy polydimethylsiloxane, a first crosslinking agent, a second crosslinking agent, a catalyst, a filler, a coupling agent, and a plasticizer. The first crosslinking agent has 3 alkoxy functional groups, the second crosslinking agent has ≥4 alkoxy functional groups, and the D3-D10 content of α,ω-dihydroxy polydimethylsiloxane is 0.01-0.05 wt%. This invention utilizes a polyalkyloxysilane derivative prepared from a tertiary amine polyol and an isocyanate-based silane coupling agent as a non-volatile second crosslinking agent, which has high activity, does not reduce the reaction rate, and can reduce the amount of the volatile first crosslinking agent. Furthermore, using α,ω-dihydroxy polydimethylsiloxane with a low D3-D10 content as the base adhesive can further reduce volatile components, making the automotive lights less prone to fogging.

This utility model belongs to the technical field of chemical production equipment and discloses a waste gas treatment device for silicone sealant production. It includes suction hoods installed at various points on the production line, which are sequentially connected via pipes to a dust collector, an incinerator, a wet electrostatic precipitator, an alkaline scrubbing tower, an induced draft fan, and a chimney. The outlet of the dust collector is connected to the inlet of the incinerator, the outlet of the incinerator is connected to the inlet of the wet electrostatic precipitator, the outlet of the wet electrostatic precipitator is connected to the inlet of the alkaline scrubbing tower, the outlet of the alkaline scrubbing tower is connected to the inlet of the induced draft fan, and the outlet of the induced draft fan is connected to the inlet of the chimney. This utility model can treat the waste gas generated during silicone sealant production, ensuring environmental and personal safety.

The utility model discloses a floor type mounting structure of glass curtain wall relates to glass curtain wall technical field contains stainless steel groove, glass panel, switching steel sheet and concrete base, stainless steel groove passes through indoor terrace lengthways, and the top of stainless steel groove is flush with indoor terrace, switching steel sheet has two, and is located stainless steel groove's both sides respectively, and stainless steel groove is fixed and installed on concrete base through two switching steel sheets, stainless steel groove is U -shaped, and the lower end of glass panel is embedded in stainless steel groove, and the both sides and bottom of glass panel are all provided with flexible pad in stainless steel groove inner wall contact position, and the whole of the whole structure and stability are improved to the whole safety of the guarantee under the strong wind or earthquake load, and it is not easy to displace, and the whole safety is guaranteed, and the sealing of the connecting position is carried out to the silicone sealant, effectively avoid the generation of gap, improve the leakproofness, prevent rainwater seepage.

The present disclosure provides a one-component room temperature vulcanizable (RTV) silicone sealant composition comprising an alkoxy-terminated organopolysiloxane polymer (a) and a tin-based catalyst (d), and a process for preparing said one-component room temperature vulcanizable (RTV) silicone sealant composition comprising an alkoxy-terminated organopolysiloxane polymer (a) and a tin-based catalyst (d). The one-component room temperature vulcanizable (RTV) silicone sealant composition relies on a novel stabilizer combination (e) of (e)(i) one or more silazanes and one or more silanes (e)(ii) having at least one acetamide group, with the aim of providing a storage-stable one-component room temperature vulcanizable (RTV) silicone sealant composition.

This utility model relates to the field of electronic cigarette technology, specifically a novel in-vehicle electronic hookah. The novel in-vehicle electronic hookah includes a main bracket, inside which are a control component and an oil cup. One end of the control component is connected to a microphone component, and the oil cup contains a heating element. A water bottle is connected to the bottom of the main bracket. A smoke outlet is provided on the side wall of the main bracket. The main bracket contains a microphone air passage, a smoke outlet air passage, and a main air inlet air passage. The main air inlet air passage communicates with the microphone air passage and the heating element, and the smoke outlet air passage communicates with the smoke outlet and the water bottle. It also includes an air guide tube, one end of which is connected to the main air inlet air passage, and the other end extends into the water bottle. A first air intake silicone sealant is provided between the air guide tube and the main air inlet air passage. This utility model has excellent water and oil leakage prevention, is convenient for in-vehicle use, and offers high safety.

This invention discloses a modified polysilazane, a two-component silicone sealant, and a method for preparing the same. The modified polysilazane is prepared through a nucleophilic substitution reaction of dimethyldichlorosilane, vinyltrichlorosilane, and ethylenediamine. The two-component silicone sealant prepared using the modified polysilazane of this invention significantly improves its hardness under sealed conditions without adversely affecting its curing and performance. Furthermore, it requires a small amount and is highly practical. The two-component silicone sealant prepared using the modified polysilazane of this invention exhibits high hardness retention under sealed conditions, significantly slows down the reversion phenomenon, and maintains good mechanical properties and adhesion even after curing at 90°C under sealed conditions. It also demonstrates excellent resistance to reversion under fully sealed conditions.

The utility model relates to silicone sealant technical field especially, it relates to a base material production system used in the preparation of silicone sealant, including dehydration kettle and modification reation kettle, and the outlet of dehydration kettle and the outlet of modification reation kettle are connected with the reaction unit respectively, the top and bottom of reaction unit are equipped with inlet and outlet respectively, and the top of reaction unit is equipped with vacuum port, and the vacuum port is connected with vacuum buffer device, the outside of reaction unit is equipped with first heating part, and the inside of reaction unit is equipped with second heating part and pivot, and one end of pivot is connected with motor, and first dispersion part, second dispersion part and third dispersion part are equipped on pivot. The production system is reasonable in design, can guarantee that material mixes evenly, contacts reaction fully, also discharges the moisture in material, reduces and avoids the generation of air bubble when stirring, guarantees the quality of base material.

The application discloses a kind of detection methods of the temperature resistance of filler for organic silicon sealant, belong to material detection technical field;Including determining the initial fineness value of filler sample, record as L0;Filler sample is baked at 150~180 ℃ condition 2~4 hours;Determine the fineness value of filler sample after baking, record as L1;If L1-L0≥5 μm, determine this filler sample after high temperature will have the phenomenon of return coarse, poor temperature resistance;If L1-L0<5 μm, then determine this filler sample temperature resistance is good;The method described in the application is simple, fast detection, low equipment requirement and accurate and reliable result;Solve the existing problems, such as operation complex, detection efficiency low and poor correlation with actual application of temperature resistance detection method of filler for organic silicon sealant.

This application provides an ecological drainage gate for water control in modern farmland, comprising: a PE gate and its outer frame for controlling drainage volume; a concrete outer frame for fixing the gate, including a base plate, a back plate, and two fan-shaped side plates; a short outlet pipe at a certain angle installed on the back plate for reliable installation; a filter screen installed on the gate and fixed to the gate structure for filtering floating impurities in the water; and a mudguard installed at the front of the base plate to prevent mud from being carried into the ditch. The advantages of this application are: the use of a filter screen to intercept floating impurities in the water, preventing them from flowing into the ditch; the installation of a mudguard to intercept silt; the ability to open the PE drainage gate to an ideal height with precise control of drainage volume; and the pre-installed inclined outlet pipe connected to the drainage pipe with silicone sealant, eliminating the problem of leakage at the joint.

The utility model relates to silicone sealant technical field especially relates to a kind of inorganic filler pretreatment device for silicone sealant production, including dispersion kettle, sand mill, spin-vibration screen, first reaction kettle that are sequentially linked, the liquid inlet of first reaction kettle is connected with hydrochloric acid delivery pipeline, and the discharge port of first reaction kettle is connected with first filtering device;The effluent outlet of first filtering device is connected with waste liquid storage tank, and the discharge port of first filtering device is connected with washing kettle, and the discharge port of washing kettle is connected with second reaction kettle, and the feed inlet of second reaction kettle is connected with modifier delivery pipeline, and the discharge port of second reaction kettle is connected with second filtering device, and the discharge port of second filtering device is connected with drying device, and the discharge port of drying device is connected with inorganic filler storage tank.The above-mentioned structure's inorganic filler pretreatment device can effectively remove metal impurities and magnesium salt in inorganic filler (calcium carbonate), and can also modify calcium carbonate, improve the purity of calcium carbonate.

The utility model discloses a kind of cooling device for silicone sealant production, it is related to silicone sealant production technical field, including cooling tank and the support leg of fixed connection in the bottom of cooling tank, the inside of cooling tank is equipped with cooling pipe, cooling liquid in cooling pipe can be heat dissipation cooling by heat dissipation coil pipe and heat dissipation box cooperation temperature sensor, the cooling liquid temperature inside circulation cooling pipe is raised and cannot be effectively heat dissipated in the problem of continuous production, it is favorable to improve the stability of cooling device when continuous work;The application can be scraped by main scraper and vice scraper cooperation in the rotation shaft drive agitator rod to silicone sealant agitating cooling, main scraper and vice scraper will also be driven to rotate and scrape in the outside of cooling pipe in cooling tank, the problem that part of material is adhered to the outside of cooling pipe and reduces the heat exchange efficiency of cooling pipe when silicone sealant is cooled is solved, it is favorable to improve the work efficiency of cooling device.

This utility model discloses a fire hydrant pressure testing device, relating to the field of fire protection testing technology. It includes a fire hydrant pressure testing connector, which can be installed at the fire hydrant outlet. A fixed plate is fixedly connected to the side of the fire hydrant pressure testing connector. A disc is fixedly connected to the side of the fixed plate away from the fire hydrant pressure testing connector. A hexagonal groove is formed on the disc, and a sliding column is slidably connected inside the hexagonal groove. A clamping plate is fixedly connected to the sliding column. A rotating disc is rotatably connected to the fixed plate, and a sliding groove is formed on the rotating disc. The clamping plate fits snugly at the connection between the fire hydrant pressure testing connector and the fire hydrant outlet. This clamps the connection between the fire hydrant pressure testing connector and the fire hydrant outlet, improving the connection strength. Furthermore, silicone sealant can tightly fit the gap at the connection, reducing the entry of external air into the fire hydrant pressure testing connector and thus improving the accuracy of pressure measurement.

This invention provides a modified crosslinking agent and a fast-curing, heat-resistant, alcohol-free silicone sealant, along with its preparation method. The invention uses a triaminobenzene-containing compound substrate and isocyanate-based trimethoxysilane as raw materials to synthesize a modified alkoxy crosslinking agent containing three urea groups. This crosslinking agent is then combined with α,ω-dihydroxypolydimethylsiloxane, inorganic fillers, a crosslinking agent, a catalyst, and a coupling agent in an alcohol-based system to prepare an alcohol-free silicone sealant. Compared to existing systems, the silicone sealant prepared using this invention exhibits improved curing depth and heat resistance while maintaining good mechanical properties, with a partial increase in mechanical strength. This addresses, to some extent, the increasing demands for heat resistance and curing speed in industrial and construction sectors for silicone sealants, expanding the application scenarios of alcohol-free silicone sealants and significantly improving their application performance and service life in high-temperature environments.

This invention discloses a drip-proof silicone sealant soft packaging filling and sealing machine and filling method, including a filling and sealing main frame. A material cylinder is vertically fixed on the inner side of the upper part of the filling and sealing main frame. A push piston is sealed and slidably fitted inside the material cylinder. The top of the push piston is coaxially fixed to the output end of a drive cylinder fixed on the top of the filling and sealing main frame. The lower end of the material cylinder is coaxially connected to a vertically downward filling nozzle. An electrically controlled drip-proof valve and an elastic residual adhesive scraping ring are sequentially fitted on the filling nozzle. This invention, based on the main frame, uses pneumatic clamping and positioning of the soft packaging, four-bar guide lifting to achieve precise docking with the filling nozzle, cylinder pushing to complete quantitative filling, double drip-proofing and residual adhesive collection, and finally heat sealing and heat dissipation to complete the sealing. All components are electrically controlled and linked, achieving drip-proof contamination prevention, high-precision filling and sealing, and automated integrated operation, significantly improving efficiency and reducing costs.

The application relates to the field of building outer wall photovoltaic integration technology, and particularly discloses a super-low-energy-consumption building photovoltaic and heat preservation integrated outer wall system, which comprises a base wall body, a connecting steel plate is installed on the base wall body through fixing anchor bolts, light steel connecting pieces are fixedly arranged on the outer side of the connecting steel plate, a heat preservation layer is arranged on the outer surface of the base wall body, a protective layer is tightly arranged on the outer side of the heat preservation layer, the light steel connecting pieces pass through the heat preservation layer and the protective layer to connect photovoltaic modules, heat insulation pads are arranged between the connecting steel plate and the base wall body, the light steel connecting pieces are wound with pre-pressing expansion sealing tapes around the periphery of the heat preservation layer and the protective layer, the cooperation position between the protective layer and the light steel connecting pieces is sealed by using silicone sealant, a space is reserved between the photovoltaic modules and the protective layer, silicone sealant is used to seal between adjacent photovoltaic modules, sealing plates are arranged around the space between the photovoltaic modules and the protective layer to form airtight air interlayers, a windproof hood is arranged on the upper port of the sealing plate, and an adjustable air inlet is arranged on the lower port.

This invention relates to the field of lubricating oil technology, and discloses a lubricating oil composition and its preparation method. The lubricating oil composition includes a base oil, an extreme pressure anti-wear agent, a friction modifier, and optional other additives. The extreme pressure anti-wear agent is selected from isobutylene sulfide and / or dialkyl dithiophosphates, and the friction modifier is an ammonium phosphate salt. The other additives are selected from at least one of viscosity index improvers, antioxidants, metal deactivators, dispersants, detergents, and antifoaming agents. By controlling the specific types of extreme pressure anti-wear agents and friction modifiers, better synergistic effects can be achieved between them and with other components, resulting in a lubricating oil composition with excellent anti-friction and wear properties while exhibiting excellent compatibility with silicone sealant materials.

This invention discloses an aerogel-infused composite frame low-carbon energy-saving glass window, belonging to the field of building energy-saving doors and windows technology, including a composite frame, a thermal insulation filling system, a sealing and protection system, and insulated laminated glass (12). The composite frame consists of a GB / T6063 aluminum alloy outer frame (1), an inner frame (5), and a PA66 thermal insulation strip (2). The core cavity is vacuum-infused with a nano-silica aerogel layer (4), and the auxiliary cavity is filled with a polyurethane foam layer (3). The sealing and protection system is a "quadruple sealing + cold bridge blocking" structure, including EPDM rubber strips (7, 6, 15), silicone sealant (10, 11), foam rods (9), and thermal insulation sponge (14). The insulated laminated glass (12) has the following specifications: 3+0.76Pvb+3+14AR+5 super single silver+14AR+5 super single silver. This design makes the overall window heat transfer coefficient ≤0.6W / (m²). 2 ·K), with air tightness reaching level 8 of GB / T 7106-2019 standard and water tightness reaching level 6, effectively blocking cold bridges and heat transfer, reducing building energy consumption, and suitable for all types of buildings, especially ultra-low energy consumption buildings.

This utility model relates to the field of electronic cigarette technology, specifically to an electronic cigarette structure that prevents condensation from being inhaled. The electronic cigarette structure of this utility model includes an oil cup, an oil reservoir, an atomizing core assembly, and silicone sealant on the oil reservoir. The oil cup contains an oil reservoir with hollow sections forming an axial atomization channel. The atomizing core assembly is housed within the atomization channel. Silicone sealant is positioned above the oil reservoir, and a mouthpiece integrally formed from the oil cup is located above the silicone sealant. A mouthpiece hole is formed within the mouthpiece, communicating with the atomization channel. The mouthpiece hole is a large, horizontally shaped hole resembling a racetrack. This utility model solves the problem of condensation being inhaled into the user's mouth and can be applied to electronic cigarettes.

This utility model relates to the field of electronic cigarette technology, specifically to an electronic cigarette that uses a rotary extrusion mechanism to quickly lubricate the coil. The electronic cigarette of this utility model includes an e-liquid bottle; the e-liquid bottle includes a bottle body, a bottle cap, a rotating cap, a movable cap, and a sealing silicone sealant; the bottle cap is located at the top of the bottle body; the rotating cap is located between the bottle cap and the bottle body, allowing the bottle cap to rotate relative to the bottle body while remaining axially fixed; the movable cap is embedded within the bottle cap and, as the bottle cap rotates, causes the sealing silicone sealant to move axially relative to the bottle body; the bottle cap, movable cap, and sealing silicone sealant are hollow, forming an e-liquid channel; an aluminum film is sealed at the top of the bottle cap. This utility model solves the problem of burnt e-cigarette coils and can be applied to electronic cigarettes.

This utility model discloses a silicone and modified silicone sealant extrudability testing device, including a base and a rotating indexing table movably mounted on the base. An extrusion mechanism is provided on the left side of the base. The rotating indexing table has several evenly spaced circular holes, and a clamping mechanism corresponding to each circular hole is provided on the rotating indexing table. An automatic weighing machine is located on the bottom left side of the rotating indexing table, and the automatic weighing machine is equipped with a material dispensing mechanism. The beneficial effects of this utility model are that the sealant tubes use the same extrusion nozzle diameter. When the rotating indexing table rotates, the clamping mechanism can clamp the sealant tubes, enabling continuous extrudability testing of the sealant tubes in conjunction with the extrusion mechanism. The automatic weighing machine can automatically weigh the extruded sealant to determine its extrusion performance, effectively improving the efficiency of sealant extrudability testing.

This invention relates to a quick-drying, mildew-resistant silicone sealant and its preparation method. The quick-drying, mildew-resistant silicone sealant comprises the following components by weight: 90-100 parts of 107 silicone rubber, 20-30 parts of plasticizer, 8-15 parts of crosslinking agent, 3-5 parts of modified coupling agent, 0.2-0.6 parts of catalyst, 20-30 parts of nanofiller, 3-6 parts of mildew inhibitor, 1-3 parts of chitosan, 3-5 parts of polyvinyl alcohol, and 0.3-0.5 parts of glutaraldehyde. Compared with existing similar products, the quick-drying, mildew-resistant silicone sealant of this invention has superior surface adhesion, quick-drying (rapid solidification) performance, and superior long-lasting mildew-resistant and antibacterial properties.

This application relates to the field of silicone sealants, and discloses a silicone keypad for medical devices and its preparation method. A silicone keypad for medical devices is prepared from the following raw materials in parts by weight: 100 parts of methyl vinyl silicone rubber compound, 20-30 parts of fumed silica, 3-5 parts of hydroxyl silicone oil, and 1.5-2.5 parts of peroxide curing agent; the methyl vinyl silicone rubber compound is prepared by mixing methyl vinyl silicone rubber, vinyl cyclic polysiloxane, cage-like polysilsesquioxane, and a dispersant. The silicone keypad prepared in this application, when used in medical devices, exhibits good wear resistance and fatigue resistance during long-term use, and its surface is not prone to aging or stickiness under prolonged contact with disinfectant.

The application discloses a high-strength, optical-grade transparent dealcoholized silicone sealant and a preparation method thereof. The dealcoholized silicone sealant comprises the following raw materials in parts by mass: 100 parts of vinyl-terminated polydimethylsiloxane, 30-50 parts of vinyl MQ silicone resin, 12-15 parts of single-end hydrogen-containing trimethoxyl polydimethylsiloxane, 0.06-0.18 parts of platinum catalyst, 5-10 parts of dimethyl silicone oil, 3-10 parts of crosslinking agent, 2-5 parts of coupling agent and 0.5-1.5 parts of organic tin catalyst. The dealcoholized silicone sealant prepared by the application has excellent mechanical properties and optical-grade light transmittance and is cured at normal temperature.

1. Name of the product in this design: Packaging Bottle (Seam Sealant and Glass Glue Series). 2. Intended use of this design: for packaging bottles of sealant and silicone sealant. 3. The key design elements of this product are the combination of shape, pattern, and color. 4. The image or photograph that best illustrates the key design points: Design 1 3D view. 5. The design for which protection is sought includes color. 6. Design 1 is designated as the basic design.

A silicone vinyl tube assembly includes: an opening member comprising a body having a first opening formed in a front-rear direction, two wings formed on opposite sides of the body, a first threaded portion adjacent to the two wings, and a second threaded portion adjacent to the first threaded portion and having an outer diameter smaller than the outer diameter of the first threaded portion; a vinyl tube comprising two layers of vinyl sheets forming a space therebetween, the space being filled with silicone sealant, wherein a second opening is formed between the two layers of vinyl sheets, and the two wings are inserted into and engaged in the second opening; a plug removably coupled to the second threaded portion; a cap removably coupled to the first threaded portion and configured to be mounted in an opening on one side of a cylinder body for mounting on a silicone gun; and a compression member inserted into an opening on an opposite side of the cylinder body and used to compress the vinyl tube using a silicone gun.

This invention provides an automatic silicone sealant filling and packaging equipment and process, relating to the field of silicone sealant filling technology. It includes a cylinder feeding assembly capable of storing and individually outputting cylinders. A cylinder positioning assembly is connected to the lower end of the feeding assembly, which sequentially intercepts cylinders one by one. Below the positioning assembly is a cylinder picking assembly capable of simultaneously picking up several neatly arranged cylinders. A silicone sealant injection assembly is located on one side of the picking assembly, connected to a silicone sealant mixing assembly. The advantages of this invention are that by incorporating the feeding assembly, positioning assembly, and picking assembly, multiple cylinders can be neatly picked up simultaneously, filled, and automatically sealed. Compared to the traditional method of filling and sealing individual cylinders, efficiency is improved, silicone sealant packaging efficiency is increased, and the waiting time from silicone sealant production to filling is reduced, thus ensuring the quality of the silicone sealant.

This invention relates to the field of silicone sealant technology, and in particular to an environmentally friendly, fast-drying door and window sealant, its preparation method, and its application. It comprises 255-265 parts of 107 sealant with a viscosity of 20,000, 95-105 parts of 107 sealant with a viscosity of 5,000, 640 parts of calcium carbonate, 20 parts of methyl tributanone oxime silane, 10 parts of methyl mixed ketone oxime crosslinking agent, 10 parts of vinyl tributanone oxime silane, 2 parts of KH-550 coupling agent, 4 parts of KH-792 coupling agent, 0.6 parts of tin laurylate, and 5 parts of mustard oil. This invention utilizes two types of 107 sealant in combination, balancing extrusion performance and strength. The high activity of vinyl tributanone oxime silane combined with the high-performance catalysis of tin laurylate results in a product with efficient internal curing ability and rapid surface drying upon contact with moisture. The KH-550 and KH-792 coupling agents, through their amino groups, further enhance adhesion. Additionally, this invention significantly reduces the emission of methyl ethyl ketone oxime.

This invention provides an oil-free vertical vacuum pump for the production of silicone sealant base materials, including a pump body. The pump body includes a frame, and an air inlet pipe is provided on one side of the frame. A spiral tube is connected in series to one end of the air inlet pipe. Several annular baffles arranged along the spiral direction are fixedly connected to the inner wall of the spiral tube. In this invention, by connecting a spiral tube to the air inlet end of the air inlet pipe, and setting spirally arranged annular baffles inside the spiral tube, the spiral tube and annular baffles can filter out most of the particulate matter. Then, a U-shaped bend is connected in series on the air inlet pipe, and a filter plate is set in the middle of the U-shaped bend. The filter plate filters out the remaining particulate matter, thereby greatly reducing the filtration volume of the filter plate and extending the service life of the filter plate.

This utility model provides a storage device for additives in silicone sealant processing. The storage device includes a storage body, which comprises a tank, a lifting mechanism, and a cleaning mechanism. The cleaning mechanism is installed inside the tank, and the lifting mechanism is connected to the cleaning mechanism. The bottom of the tank is connected to a discharge mechanism and a support column. A feed inlet is provided on one side of the tank. This utility model achieves quantitative discharge by setting the discharge mechanism so that the discharge cylinder completes one discharge every 180 degrees, which not only realizes quantitative discharge but also avoids continuous discharge, thus isolating the discharge and facilitating control of the discharge volume. The cleaning mechanism causes the pressure plate to rotate downwards when squeezing the material, which drives the rotating rod to rotate, allowing the rotating rod to clean the bottom of the pressure plate and prevent material from adhering to the bottom, making it easy to clean.