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By Jeff Pu | 08 November 2020 | 0 Comments

The knowledge of materials of Lifelike sex dolls

What is the difference between the silicone and TPE material of the Sex Dolls? I will show you the difference.

1. Introduction to the concept of TPE and silicone

Silica gel is a kind of thermosetting elastomer. It has the advantages of safety and non-toxicity. It is insoluble in water and any solvents. It is non-toxic and odorless. It has stable chemical properties. It does not react with any substances except strong alkali and hydrofluoric acid. It has high adsorption performance and high thermal stability and low chemical reactivity, it was first widely used in adult products and food products.

TPE is a thermoplastic elastomer, eco-friendly, non-toxic, can be colored easily by most dyes, smooth and soft, with a hardness range of 0A-120A, easily processing and molding, TPE materials have the potential to be recyclable since they can be molded, extruded, and reused like plastics without vulcanization, and reducing costs. It can be coated and bonded with those plastic materials like PP, PE, PC, PS, ABS  (over-molding), or it can be molded separately.

2. The difference between TPE and silica gel:

1. TPE is a general term for a variety of elastomer materials that have rubber elasticity at room temperature and it can melt and flow at high temperatures. Silica gel is a kind of special rubber. It has good mechanical strength, wear-resistance, and high-temperature resistance after cross-linking. It is a thermosetting rubber. It will not melt when it is heated after vulcanization. It burns when the temperature is over high. The product of complete combustion is water and silica.

2. They are different in analysis structure: Silica gel is an elastomer connected by silicon-oxygen bonds in the main chain, and the side chain is generally methyl, namely CH3. TPE is a thermoplastic elastomer, including styrene, olefin, and polyurethane. The main difference between the molecular structure of them is that one is the SI02 structure and the other is the CC structure.

3. In terms of processing performance: silica gel needs to be vulcanized and heated for molding, while TPE can be processed without vulcanization. Silicone processing is difficult to form, while TPE production and processing is easy.

4. Silica gel has advantages over TPE in terms of high-temperature resistance. The temperature resistance of silica gel is generally between 200°C and 300°C, while TPE is theoretically generally resistant to a temperature between 130°C and 150°C, and the higher it is, the aging and cracking will have occurred.

5. The price of silica gel is generally more expensive than TPE (general TPE ).TPE has an advantage in price, except for special TPE materials, such as halogen-free flame retardant, food-grade, and other characteristics.

6. From the cost point of view, the waste of silica gel cannot be recycled, and the TPE waste, nozzle material, leftover material, etc. can be completely recycled and reused for saving more costs.

3. Which is better to produce to Adult Love Dolls, TPE, or silicone?

Both of them have their own advantages, but TPE is cheaper than silicone material in terms of processing performance, recyclability, and cost. The TPE is the preferred material instead of silicone with the increasing number of types and applications of TPE!

In terms of material safety, silica gel is eco-friendly, non-toxic, and odorless. The most important thing about silicone is that it cannot be reused, while TPE can be recycled. From the point of view of the characteristics of the material, silica gel has strong abrasion resistance and high-temperature resistance, while the TPE material has better flexibility, but it is easy to deform and has permanent deformation. The full-size Sex dolls have very high-level requirements to wear resistance and deformability, so silicone material is better for making dolls.

4. In fact, you can consider a Hybrid of silicone head + TPE body

The head sculpts made by TPE are NOT so realistic. The silicone heads are definitely more realistic than TPE heads. Because it depends on the material characteristics. It can’t carry out in-depth painting and sculpting for the head which made in TPE materials except for the silicone heads. So you can take a Hybrid doll if you want to simultaneously enjoy a soft and elastic body and a beautifully detailed face.

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