Mold Making Silicone Rubber World……

When you copy a garden sculpture model, we often use copying silicone mold and curing agent according to a certain ratio to complete the operation, of which the technical parameters to select(hardness, viscosity, shrinkage, etc.)and copy silicone mold and the radio of curing agent case we have to choose the most suitable one to produce good sculpture models. Copying Silicone mold mainly used for toy and gift industry, craft gift industry, furniture decoration industry, figures copied, building decoration industry, resin handicraft industry, unsaturated resin crafts industry, the plastic toy industry and candle crafts industry, gifts industry, stationery industry, gypsum gifts industry, mold manufacturing industry, bolero craft, simulation plant and animal sculptures industry, Buddhist carvings crafts products and other industries copy and mold making. ①Copying silicone mold has a better operating properties. ②Copying silicone mold has better fluidity, low viscosity and is easy to opera

Adult sex products for the two-component addition cure silicone rubber, consists of two parts: A component is a silicone, B component is a curing agent; two components mix ratio of 1:1 ratio. After vulcanization becomes soft, resilient material of low hardness after curing, good tear resistance, good color sense, good texture and other characteristics. Can be made, such as the human body, insoles, shoulder pads, patch, anti-slip mats and other flexible silicone rubber products, but also for the simulation of human facial silicone molds, mainly for the human face, supplies, human organs, mimicking the body shape, the same type, changing shape, soft touch. Adult supplies silicone had a very strong smell, which is due to not using odorless curing agent in the production of secondary sulfur can remove this odor, the harm to the human body is very small and can be ignored, and this is inevitable scented products after all any vulcanized silicone products will smell over time. Friendly remin

Currently the production of artificial culture stone steps mainly in ten steps, namely: model sculpture model processing → Templates → production → Templates → Partition → model paste brushing silicone mold release preparations →  first layer of silicone brush silicone perfusion → off mode. According to the above ten steps, we can see that the production of artificial culture stone mold is the most important use of templates. Artificial culture stone silicone Culture stone generally use a silicone mold, the first use of ocher color modulation, culture stone, culture brick color palette depending on the circumstances, the color of soil is basically a dozen colors, different colors can be mixed to achieve the color you need, color is a key issue, the color is not uniform culture stone, generally do so, first bring up the light brown, and then bring up the gray, light gray in the recall, these three different colors sprayed internal mold, not the whole entire spray again, put the mold int

Two-component RTV silicone rubber compounds cure by adding a specified amount of a curing agent to the base compound. Like one-component RTV silicone rubbers, two-component RTV silicone rubbers have outstanding electrical properties and resistance to heat and cold, while also offering improved deep-section curability and storage stability. Features: 1. Properties identical to those of one-component RTV silicone rubber. 2. Electrical properties, heat and cold resistance, shock resistance, weather resistance, curing characteristics, etc. 3. Deep-section curability. 4. The curing reaction proceeds uniformly at the surface and internally, regardless of rubber thickness. 5. The adjustability of cure speed. 6. Cure time can be adjusted by changing the type or quantity of curing agent, or by heating. Storability The base compound and curing agent are stored separately, so the product will not become unusable due to curing during storage. Two-component RTV silicone rubbers can be stored for lo

1. Why silicone mold will be fewer turning models ? If the products do little more complex patterns come with a large hardness silicone mold, there will be a fewer turning molded phenomenon, because silicone excellent time will be very brittle and easily broken. Conversely, if you do build a product to do with a small hardness silicone mold, the result will also be unsatisfactory. Because silicone is too soft, it will reduce the tensile and tear strength, made out of the mold will be deformed, turning model number will be reduced. Mold itself good quality, silicone no good or bad, only suitable or unsuitable. We want to use for the product to make the hardness of the size of the silicone mold will not appear in this situation. 2. Why mold silicone mold phenomenon appears to burn ? Because unsaturated resin and resin products plus a peroxide curing agent after the case of the resin reaction will generate a lot of heat, usually resin curing time is 3 minutes, then three minutes after goi

  The amount of the curing agent depends on the actual requirements of customers. If molds require fast drying and demould, more curing agent is needed, and the mixing ratio shouldn’t be over 5％, the more curing agent, the faster the molding time. Or it will waste the silicone rubber. Contrarily, it is the silicone potting mold, less curing agent will be needed to lengthen the operation time. The mixing ratio of silicone and the catalyst shouldn’t below 1％, otherwise, it would need a longer curing time. With the mixing ratio less than 5%, it would have little influence on the hardness, tear strength, and tensile strength. Silicone and the catalyst: 1. Curing agent 1% added, the silicone can still be operated within 2.5 hours and can be demoulded after 6-8 hours. 2. Curing agent 2% added, the silicone can still be operated within 50 minutes to 1 hour and can be demoulded after 2-3 hours. 3. Curing agent 3% added, the silicone can still be operated within 28 - 30 minutes and can be demou

Users sometimes use liquid silicone curing problems encountered, now our summarizes five kinds of the cause of the rtv-2 liquid silicone not curing and their solutions, we hope to help. 1. A curing agent or too little of the curing agent will affect the cured silicone. According to the provisions of the curing agent is added, and should see clear instruction is the proportions of the volume or weight. 2. Different types of curing agents can’t mix, add molding glue exposure to tin ingredients in the condensation silicone will not respond. With the corresponding models of the curing agent. Operating tools are classified, do not mix. If you are operating plus molding silicone, do not come into contact with condensation products. 3. Silicone and curing agent do not stir evenly. Silicone and curing agent operation to fully stir well. 4. Incomplete cure (not dry) in the contact surface occurs only master, the other parts of the intact curing. Marked on the surface of the master mold with a t

  1、Introduce Shoe soles silicone rubber is white liquid two compound condensation silicone rubber.part A is silicone rubber, part B is the catalyst.Ratio:100:2-100:4.with good flowability and tear strength, so the silicone mold won’t be out of shape.it is ideal silicone material to make shoe soles molds. 2、Characteristical ①With low viscosity, good flowability and tear strength, the silicone molds won’t be out of shape. ②With High resistance to high temperature,acid-Bases and aging, so can be used for a long time. ③With low linear shrinkage. ④It is an environmental liquid silicone product, not easy to combustion, also won’t catch fire. 3、Application Suitable for making molding for shoe soles, sand, gypsum and other simple pattern products. 4、Technical data Item no. color Hardness shore A o Viscosity (Mpa.s) Tear strength(KN/m) Tensile strength(Mpa) Elongation break(%) Shrinkage(%) 15 white 15±2 15000±1000 20±2 ≥2.5 400 ≤0.3 25 white 25±2 20000±1000 24±2 ≥3.0 280 ≤0.3 5、how to make mol

  1、Introduce Manual mold design silicone rubber is two components rtv liquid silicone which is dedicated to manual mold design. The silicone rubber mold with resistance to deformation, linear shrinkage and high temperature, which is mainly applicable to manual molds and a small quantity of product duplication. 2、Features ①Simple to operate, fast duplication, can be used repeatedly. ②Resistance high temperature, resist 250℃. ③Good flexibility, resistance to deformation, low shrinkage to less than 0.1%. 3、Application manual mold silicone rubber is mainly applicable to manual mold design, such as PVC plastic molds, model mold making, cement product molds, low melting point alloy molds, alloy toy craftworks, plastic toys, gift and stationery, large statues, duplication of cultural relics, shoe sole mold fabrication, pad printing positioning, shock resistance for electronic equipment, etc. 4、Technical data Item No. Color Hardness Shore A Viscosity (Mpa.s) Tear strength(KN/m) Tensile streng

Many customers find that silicone mold transformation when they use silicone rubber to make silicone molds. Silicone rubber with low hardness has the characteristic of ease of deformation. How to avoid the silicone molds transformation? Let’s analyze it in five aspects as below:  1. Put it into production before it does not cure completely. Although the silicone mold can be demold a few hours after casting mold. The silicone mold cures completely take less than 24 hours. If time permits, experienced people usually de-mold the mold and put it into production 24 hours after casting molds. 2. The quality of the silicone rubber is poor, or the shrinkage is too high or the filler is too many. The shrinkage of high-grade silicone rubber is about 0.1%, the shrinkage of ordinary silicone rubber is about 0.3%. The shrinkage of poor silicone rubber is higher. 3. The lining shell of silicone rubber does not accurate. 4. Do not put the soft silicone mold into the hard lining shell to save time aft

Different products may need different hardness of silicone. Common silicone’s hardness is suitable for most products, but there are some industries that need high hardness silicone. So what is the maximum hardness of the silicone? When the hardness is over 50 shore A, it can be called high hardness silicone. When the hardness is more than 50 shore A, the tear strength of silicone would be weakened, the silicone products would become crisp and easy to be broken off. Most high hardness silicone is used for leather printing, plant gum, rubber roll, trademark, nursing bottle and so on. The maximum hardness of silicone is 65 shore A, for higher hardness, you need to add a hardening agent yourself.

 The liquid silicone was divided into two types: addition silicone and condensation silicone. Addition silicone is used for manufacturing insoles, shoulder pads, plackets, padding and other flexible silicone products. Condensation silicone is used for making soap, candles, etc. Usually less than 10 shore A hardness is called low hardness soft silicone, it is soft and easy to de-mold, and for addition silicone, the lowest hardness is 00-30 shore A, for condensation silicone is about 5 shore A.

 RTV-2 liquid silicone curing by silicone mix with a catalyst according to the ratio. and the quantity of catalyst will affect pot lifetime, curing time and hardness after curing. Then what will happen when silicone mix with different ratio catalysts? In general, curing time will be short with high temperatures. so should add catalyst according to the temperature. if add too much catalyst, the silicone molds will become hard and brittle. conversely, if add too little catalyst, pot lifetime will be longer than before. But when pouring molds, must add a little catalyst, so that can make perfect molds according to long curing time. The ratio of silicone and catalyst at room temperature is as below: 1. with 1% catalyst, the silicone also is liquid when mixed after 2.5hrs, de-mold time about 6-8 hrs. 2. with 2% catalyst, the silicone also is liquid when mixed after 50-60mins, de-mold time about 2-3 hrs. 3. with 3% catalyst, the silicone also is liquid when mixed after 10-15mins, de-mold tim

The quality of RTV liquid silicone rubber raw materials will affect the quality of silicone molds and their applications. The determinants of the quality of silicone are viscosity, hardness, tear strength and tensile strength. Let me share with you some tips for judging the quality of liquid silicone.  Viscosity: The liquidity of silicone rubber is determined by viscosity. Let liquid silicone rubber vertical natural flow down when testing it. The faster the flow, the better the fluidity of the silicone. Please note, viscosity is proportional to tear strength. Do not use low viscosity silicone to pursue liquidity, which will lead to silicone molds with low tear strength to reduce reproduction. Some factories add much silicone oil to increase liquidity, which also deterioration in tear strength. Hardness: Hardness is one of the important technical indicators that reflect silicone material rigidity. If the hardness of the silicone is below shore A 10, the silicone products have low tear s

 As we all know, rtv-2 silicone rubber includes addition silicone rubber and condensation silicone rubber. The performance of these two types of silicone rubber is different. Below we introduce the difference between addition silicone and condensation silicone rubber from the composition and use. Difference in composition Addition silicone rubber, also known as platinum-cured silicone, is a non-toxic and odorless RTV-2 silicone. The ratio of part A to part B is 1:1 or 10:1. It does not produce small molecules during the reaction and has low shrinkage. . The color is semi-transparent or transparent. Condensed silicone rubber is also called tin-cured silicone rubber. It is composed of part A silica gel and part B tin curing agent. The ratio is 100:2-100:4. The base color is white or translucent. Other colors can be adjusted with pigments and added to form silica gel. In comparison, a little odor and small molecules are generated during the reaction. Usage differences Addition molding sil

In the process of making a silicone mold, bubbles in the liquid silicone may affect the appearance of the mold. If there is no vacuum pump, you may be confused about the handling of air bubbles. The following teaches you effective ways to reduce silica gel without a vacuum pump. First of all, we need to know why bubbles are generated. The first case is that the bubbles are not completely released when the silicone and curing agent are mixed. So you need to stir the liquid in one direction, and then let it sit for a while to let the bubbles float by themselves. The second case is that the raw material of silica gel contains some volatile impurities. When heating and curing, the impurities may vaporize and produce bubbles. Therefore, it is recommended to cure at room temperature or dry at low temperature to volatilize impurities. Secondly, when pouring silica gel, it is best to let it flow like a filament, so as to reduce bubbles. After pouring, use a toothpick to break the bubbles on th

 Electronic potting silicone rubber can make effect in electrical equipment product and it’s function of adhesive,potting and sealing can meet the electrical equipment waterproof, insulation and flame retardant demands. Now,in the market,the most application in electrical equipment is electronic potting silicone rubber and epoxy resin sealant,in order to let you have a more clearly knowledge,please check the below difference of this two item: Difference silicone potting compounds Epoxy resin sealant Cured hardness Elasticity Hard Glue adhesion Medial Good Smell No Yes Temperature Stable resistant at high temperature -50～250℃ Poor resistant at high temperature -50～150℃ Curing time Adjusting Adjusting Weather resistance Excellent Poor Shrinkage Almost to zero Large shrinkage Thermal conductivity[w/(m·k)] Good performance and fast heat,up 0.6 to 0.8 Poor performance,about 0.3 to 0.5 Restoratio Can repair without no trace Beyond repai

When we use liquid silicone rubber to make a silicone mold,we may find that the silicone rubber have not cured or not cured completely after 48 hours.What are the causes of this? In the experience of  liquid silicone rubber factory,there are 5 possible reasons that generate the silicone not cured or cured not completely. Reason 1: Too much or too much curing agent can be influence silicone to cure. Resolution:Add curing agent due to prescribed ratio,and please note instruction that the mixing ratio is by volume or by weight. Reason 2 : Different types of curing agents can not be mixed, addition silicone will not cure if it contact the tin composition in condensation silicone. Resolution:Use the corresponding types of curing agent and the tools are not mixed. Never contact the condensation silicone product when you are using the addition silicone rubber. Reason 3: Silicone and curing agent are uneven mixing. Resolution:Silicone and curing agent should stir evenly,especial in the bottom