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How to choose a thermally conductive silicone sheet
07-13

2020

How to choose a thermally conductive silicone sheet

One of the advantages of thermally conductive silicone film is usually a softer, more flexible material, thermal conductivity is the best, there is also a thickness range that can be adjusted, very suitable for filling the cavity, operable performance and maintenance of strong. The main advantage of choosing a thermally conductive silicone film is that it reduces the surface, the contact surface, and the heat sink to create a contact thermal resistance. What kind of thermally conductive silicone film is of higher quality? 1. Thermal conductivity Thermal conductivity is defined as the temperature difference between the two surfaces of a 1m-thick material under stable heat transfer conditions of 1 degree (K, °C), at 1 hour. The heat transferred through 1 square meter area, the unit is W/m-degree (W/(m-K), here is K can be replaced by ℃). The higher the thermal conductivity of the thermally conductive silicon film, the faster the efficiency of conduction of heat from electronic components to the heat sink, and the better the thermal conductivity. 2. hardness selection Shore hardness is generally used to measure the hardness of thermally conductive materials. The test principle is that a defined diamond punch is dropped on the surface of the sample from a fixed height. The ratio of the bouncing height to the falling height is used to calculate the Shore hardness. Thermally conductive silicone film has less hardness, softer hand feel, and certain ductility, so it can better fit the interface gap of the components and reach the goal of the heat conductive silicone film. better heat flow transfer; if the silicone film is too hard to fill the gaps effectively, it will also be too hard for the heat flow to pass through. Therefore, the hardness is reduced. If the hardness of the thermally conductive silicone film is too low, there will be deformation and tear in the installation process. situation. To avoid this situation, some of the major manufacturers with strength and experience, such as, for example, Voltimo, are meeting the heat conduction needs of The thermal conductive silicone film will be reinforced, thus enhancing the toughness of silicone film. 3.Thickness selection The silicone material has a certain resistance to compression, which can be compressed to enhance the fit of the silicone film to effectively reduce the heat flow transfer distance. The thickness of the silicone sheet is selected according to the specific components. 4. specific gravity size of various thermal insulation materials porosity is usually high, relatively speaking, their specific gravity is also very low; and as a thermal conductive The opposite is true for silicone sheets, where the larger the porosity, the more compromised the heat transfer performance of the heat transfer material.

How much pressure can the silicone rubber gasket withstand
07-09

2020

How much pressure can the silicone rubber gasket withstand

It is well known that silicone rubber gasket in the use of the process will inevitably encounter pressure and long-term shock absorption cushioning, then the product in use will often be deformed by force or loss of resilience, long-term service life is not guaranteed, so the performance of silicone rubber products or have certain indicators and the use of limits for silicone rubber gasket what are the biggest limitations?   Fatigue affects the deformation of silicone products, the structure and performance of silicone material changes caused by product fatigue problems, with the use of long-term product fatigue become greater, destroying the product, the impact of fatigue depends mainly on the raw materials of the product filler and crosslinking agent role, poor fatigue silicone atoms in the use of the process through the impact of the force lead to reduce the life of the loss of performance.   Abrasion resistance is naturally very important, and the abrasion resistance is the ability of the vulcanized rubber to resist material loss due to surface damage under the action of friction force. The It is closely related to the mechanical properties of silica gel products life in the process of breaking the difference, such as the melting point of the product should be lower than the wear-resistant effect will be The worse it is, such as a silicone product that is subjected to a certain amount of force and friction, then it could be The service life is affected by the force.   The elasticity of the silicone rubber gasket is due to the rebounding activity of silicone molecules, which can be recovered after being affected by an external force.   As long as the silicone rubber gasket has strong tensile strength and rebound strength, and can guarantee that it will not be damaged by the external force under normal condition, the product can achieve the normal use effect, so the tensile strength of the product is different due to the different rubber content of each silicone rubber products manufacturer, the rubber content of the fumed rubber is over 70%, and the elongation rate of the gasket with lower softness can be over 300%, so the deformation and fracture will not appear under normal force, but it may lead to the problem when it is used under normal condition.

How to distinguish the quality of silicone products
07-08

2020

How to distinguish the quality of silicone products

Good quality silicone products in Europe and the United States and other countries is very popular by the people, in the domestic silicone market also has great potential! You can be sure that there will be more silicone products in the future, a large number of the influx of silicone products into all walks of life, then for silicone products manufacturers, the production of silicone products. A good quality silicone product is the most important thing. Then good quality silicone products, it must have what characteristics, how to distinguish the advantages and disadvantages of silicone products?  1, good temperature resistance, where the temperature resistance includes high and low temperature, silicone is a temperature-resistant material, its temperature can reach up to 240 degrees, with a minimum temperature of -40 degrees. Generally speaking from professional technology, this requires the manufacturer to grasp all aspects. Control each process, so that the production of silicone products will reach a high-quality level.  2, easy to clean, silicone products is a waterproof product, put in the waterside will not hit any change. And the silicone cookware can be boiled in hot water to sterilize, or put in the washing machine or dishwasher to clean! The silicone products will not wash badly.  3, long life, silicone material in the space is also a very messy organization, but the chemical properties are also very stable, not with the general is not a good idea. The chemical substances have any reaction, the general weak acid, and weak base will not have any change. Silicone products have a long life, so the general silicone products, especially silicone kitchenware and other silicone products, used 3 - 5 years is no problem, silicone products are more durable than other materials.  4, soft and comfortable, silicone products, this feature means that silicone this material can produce some soft daily necessities. For example dishwashing brush silicone gloves  5, color diversity, silicone material to participate in the color masterbatch, and the vulcanizing agent, the color change then, so the color of silicone products is very beautiful and bright!  6, environmentally friendly non-toxic, silicone is an environmentally friendly non-toxic material, it has a good safety performance.

Silicone straws vs plastic straws
07-07

2020

Silicone straws vs plastic straws

Summer is here and some drinks are used by young people as a way to quench their thirst. Plastic straws vs. which is better? What about silicone straws, what's the difference compared to plastic straws? Plastic straws First of all, let's start with the fact that most of the plastic straws that we use are made of plastic because plastic material is small in cost. Businesses sell drinks and beverages with straws attached to them. The plastic material cannot be recycled and is a disposable item. Disposable plastic straws can also be very damaging to the environment, and it takes hundreds of years for plastic products to degrade naturally in the natural environment. It's unhealthy and environmentally unfriendly. Silicone straws, on the other hand, can decompose quickly and naturally without causing any damage to the environment. It's safer and more environmentally friendly. Therefore, we still urge everyone to use more biodegradable silicone products. Silicone straws Compared to plastic straws, silicone straws are much more expensive, mainly in terms of raw materials. The cost of silicone raw materials must increase their price. Therefore, silicone straws are not suitable for disposable use. If you use it in your own home, you can use silicone straws instead of plastic ones. Silicone tubing is resistant to high and low temperatures. Putting them in the refrigerator or boiling them in boiling water will not damage the silicone straws and will not produce harmful substances. Plastic straws not only age easily, but are also not resistant to high and low temperatures. Even some plastic straws can produce harmful substances at high temperatures. In addition, when you buy silicone straws, you should choose the silicone products from the regular manufacturers of silicone products, both adults and children. You can use it with confidence. Our silicone products are made of food-grade, crystal-clear fumed silicone, which is safe to touch. We are able to produce high-quality silicone products in a safe, secure, and healthy environment.

Six silicone production process
07-06

2020

Six silicone production process

Six silicone production process Silicone is one of the most common things we see in our daily lives, but it is very common silicone products 1.Molded Molded, this production process is the most common. The shape of the mold determines the shape of the silicone products. Molded silicone products are usually made by high-temperature molds with the addition of vulcanizing agent in the solid silicone raw materials through the curing machine to apply pressure. The hardness of molded silicone is usually 30°C-70°C. This is a simple process that is suitable for use in the following applications On all silicone products. 2.Injection (Injection) This process is a combination of liquid silicone and plastic with high-quality requirements. Its products are characterized by better thermal stability, cold resistance, excellent electrical insulation properties, and no toxic substances are produced when burning. Therefore, it has become an irreplaceable material in the production and design of health products, automobiles, baby products, medical supplies, diving supplies, kitchen utensils, and seals. 3.Extrusion Extrusion molding, extrusion Guangdong silicone products are usually extruded through the extrusion machine silicone molding, generally extruded silicone shape is long. Tubular can be cut at will, extrusion art made out of single product shape, mostly strip. Silicone tube in the field of medical, mechanical equipment used more widely. Can also be used in the packaging material to play a cache role. 4.Calendering Silicone rubber is kneaded and mixed with white carbon black, silicone oil, etc. to make a mixed rubber, and then calendered out of the sheet. The physical and mechanical properties of the film obtained by rolling have obvious differences between longitudinal and transverse, and this phenomenon is the calendering effect. Specifically, the longitudinal tensile strength of the film is greater than the transverse, the transverse tearing elongation of the film is greater than the longitudinal, the longitudinal shrinkage of the film is greater than the longitudinal shrinkage of the film. Horizontal. The calendering effect is the result of the directional orientation of macromolecules and needle and sheet compound in the rubber material along the calendering process. The size of the calendering effect depends on the composition of the compound, the calendering temperature, speed, and speed ratio. It is used for larger products, such as silicone film, silicone sheets. 5.Pouring The operation of irrigation or infusion mold: irrigation or infusion mold, is used for relatively smooth or simple products, no mold line to save labor and time. It is to take the product or model that you want to replicate, surround it with a plastic or glass plate, pour the vacuumed silicone directly on top of the product, and leave it for After the silicone dried and molded, take out the product, the mold is formed (Note: the infusion mold generally uses a softer silicone to make the mold, so that). (It is easy to release the mold, it will not damage the products inside the silicone mold). It is a combination of solid and liquid and can be used in products such as mobile phone covers, luggage covers, etc. 6.Coating Rapid vulcanization; strong adhesion; good fluidity, easy to defoaming. The use of platinum complexes catalytic, non-toxic, no peculiar smell; excellent thermal stability and cold resistance (use temperature -60 ℃ ~ 200 ℃) molding It has good air permeability, heat resistance, and certain tensile strength; Excellent anti-slip properties; non-polluting; low hardness; solid adhesive bonding of plant glue. High tear strength; high transparency; good tensile properties. Abrasion-resistant, washable, high temperature resistant, high three-dimensional level, smooth, soft, pliable fabric with excellent texture and good elasticity. Resistant to washing and dry cleaning. Apply to the above cloth, has the anti-aging effect. For example, silicone gloves, rain shoes, etc.