Silicone Rubber Mold

Silicone Rubber Mold is usually produced as a liquid or flexible plastic. It is actually used for medical, cooking, electrical, and many other purposes. Because silicone is actually considered chemically stable, experts say it’s safe to use and likely not toxic. Silicone is a lab-made material that consists of several different chemicals, including:

• Silicon (a naturally occurring element)
• Oxygen
• Carbon
• Hydrogen

That’s led to silicone being widely used in cosmetic and surgical implants to increase the size of body parts like the breasts and butt, for example.

We manufacture a full range of two-part, room-temperature curing silicone rubber mold that offers great flexibility, tear strength, chemical resistance, and release properties. Silicone rubber molds are often used to cast a wide range of materials, including polyester, polyurethane as well as epoxy resins, plaster, wax, concrete, polyurethane foam, low melting metals, and more.

One of the main or primary advantages of using silicone rubber mold rather than other flexible materials, like polyurethane rubber, is that release agent isn’t needed when casting polyurethane resins, foams, and other materials into silicone molds. This is especially important when cast parts need to be painted as the paint will not adhere well to parts with a residual release agent. We manufacture two different types of silicone rubber molds: platinum-cured silicones and tin-cured silicones.

There are distinct qualities that each line offers and their primary differences are: 

• Tin cured silicones rubber mold are condensation-cure systems that shrink slightly on the cure (~1%) compared to addition-cure Platinum cured silicones, which do not shrink on a cure. 
• Cured Tin cured silicones have shorter library life (2 to 5 years total) compared to Platinum cured silicones.
• Tin cured silicone rubber molds are slightly less expensive than Platinum cured silicone rubber molds. 
• Liquid Platinum cured silicones are more sensitive to certain materials (e.g., sulfur, tin compounds, Bondo) and suffer from cure inhibition (uncured surface material) more often than Tin-cured silicones.
• Tin cured molds can inhibit some casting materials, including Platinum, cured silicones, Poly-Optic Clear Casting Resin and many polyurethane rubbers.
• There are skin-safe platinum-cured silicones available in the Platinum cured product line: Platinum cured Gels.

Silicone rubber molds are favored by casters because they are easy to use and don’t require much mold release. While you’ll buy them in all kinds of shapes, sizes, and designs, sometimes finding the right mold for a custom piece is impossible. When that happens, you have to make your own. While you’ll always buy a 2-part silicone mold making kit from the store, it’s much cheaper to make your own at home!

Liquid silicone for molds used as adhesives offers unparalleled flexibility as well as exceptionally high heat resistance, making them suitable for a very large range of applications in the electrical, automotive, aerospace, electronic as well as construction industries. Liquid silicone for molds used as an adhesive are easily customized and co-formulated; they have excellent electrical properties and can be formulated to be insulative with high dielectric strength or, conversely, electrically conductive. Additionally, they are biocompatible.

Although some Liquid silicone for molds used as adhesives release corrosive entities, there are special formulations that are non-corrosive and chemically and thermally stable. Liquid rubber for molds provided by us is two-component silicone, also called rtv2 silicone, which will be vulcanized in room temperature when mix part A and part B evenly. There are two kinds of molding silicone, one is industry-grade, belongs to tin cure silicone and condensation cure silicone, the general mix ratio of silicone and catalyst is 100:3.

Another one is food-grade belongs to platinum cure silicone rubber mold and addition cure silicone, the general mix ratio of A and B is 1:1 or 10:1. Both industry-grade silicone and food-grade silicone are excellent molding material for making silicone rubber molds, each one has its own advantages.

Special Features  Of Liquid Rubber For Molds

• Excellent flowability and good self-deaeration
• High tear strength
• A mixing ratio of 11 for straightforward processing
• Fast and low shrinkage cure at room temperature which can be accelerated considerably by application of heat
• Excellent long-term stability of mechanical properties of the vulcanizate
• Good resistance to common reproduction materials

What Kind Of Liquid Silicone Rubber Molds Or Liquid Silicone Products You Are Making

Tin cured silicone rubber mold, Platinum cured silicone rubber mold, transparent silicone rubber mold, Silicone foam, Urethane rubber, Polyurethane resins, potting silicone rubber; we can adjust all the data according to the customers’ requirements.