High Temperature Adhesives by Vitcas

There are many products on the market that are commonly called “adhesives”, however, there are crucial differences between them. High temperature adhesives (HT adhesives) are complex and durable. They have little to do with glues from shop shelves that operate only from ambient temperature to around 50°C. What are high temperature adhesives then? What should we know about them? Which one to choose? We have prepared this summarising article in order to explain everything!

 

What are high temperature adhesives?

High temperature adhesives, as the same suggests, are complex and highly durable adhesives that are chosen for service environments over 100°C. They are significantly different from fast-drying glues which you can find on store shelves. They are pretty often used for automotive repairs. Furthermore, they have excellent adhesion to metals, glass, ceramics, and plastics. HT adhesives are the perfect solution for transportation, technology, energy, and even aerospace applications!

We can distinguish five chemistry families of today’s industrial tapes and adhesives: epoxy, acrylic, urethane, rubber, and silicone. These adhesive chemistries can resist incomparably higher temperatures than “traditional” glues. What’s more, high temperature adhesives are specially formulated in order to offer great resistance to the effects of weather temperature, moisture, UV light, and many more.

Some adhesives are better for thin adhesive beds (and, by “thin”, we mean approx. 3 mm). Others, in turn, can be used more thickly, especially where there’s an uneven surface of the substrate. In general, high temperature adhesives that adhere to metal surfaces are not acceptable for external use. When it comes to the rest of adhesives, they are suitable for both the interior and exterior work.

High temperature adhesives for fixing

High temperature adhesives for fixing that can withstand extreme heat – this is something that we would like to explain a little further at the very beginning. What are ceramic fibre boards, vermiculite boards, heat accumulation boards, and fireplace construction boards? Let’s find out together.

Ceramic fibre boards

Ceramic fibre board is a vacuum pressed insulation. It’s possible to produce it through a wet forming process. For this purpose, silica fibres and binders should be used. Ceramic fibre board has temperature stability. It resists high gas velocities. It is also characterised by low thermal conductivity. One more advantage of it is resistance against chemical attack and thermal shock.

If you look for something perfect for a furnace, stack lining or boiler duct, you should choose a ceramic fibre board. It’s worth using this kind of product because of its low heat storage, low sound transmission, and lightweight. Ceramic fibre board allows us to replace heavy back-up insulation. And, finally, it doesn’t contain asbestos!

There’s a whole bunch of possibilities of using ceramic fibre boards. First of all, it’s possible to use refractory lining for industrial furnaces in roofs, walls, stacks, and doors. Another example of application is combustion chamber liners, heaters, and boilers. Also, it’s worth using ceramic fibre board as back-up insulation for monolithic refractories and for brick.

Vermiculite boards

Vermiculite boards are products made from naturally occurring aluminium-magnesium silicate layers. What’s important, those layers have already expanded under the influence of heat. This kind of board can be drilled, sawn, and sanded.

These products are worth using, especially because of low thermal conductivity. What is also worth mentioning, vermiculite boards are easily machined and strong (much stronger than previously mentioned ceramic fibre board). Examples of applications include the following: hearts, night storage heaters, register plates, vessels and tanks, boilers, fireplaces, and stoves.

Heat accumulation boards

Heat accumulation boards are ceramic fibre boards that can perfectly accumulate and storage heat. Fixing them without framework or wires isn’t a problem. This kind of fire board can easily be used around fireplaces and stoves. It’s useful to know that they can also be used INSIDE these objects, too! With them, there is no question of overheating the room. We highly recommend setting the board with one of heat-resistant adhesives from Vitcas.

Fireplace construction boards

Fire boards are characterised by high temperature resistance, mechanical stability, and good thermal insulation. It’s more than easy to process them with conventional woodworking tools. Fire construction boards are designed to construct tiled stoves and fireplaces in places where there’s no pre-existing chimney breast.

Another option is placing them in the centre of a wall. One more possible idea is choosing the corner of a room as a perfect location for a tiled stove or fireplace. With the right heat-resistant sealants, it becomes possible to make the fireplace with less effort and in less time.

 

adhesives designed for high-temperature applications

 

Recommended heat-resistant adhesives

There are lots of products intended for glueing ceramics in places that are exposed to high temperatures, up to 1350 °C. Those products are ideal for building pizza ovens, bread ovens, tiled stoves or fireplaces. Let’s read more about heat-resistant tiles, sealers, rapid setting adhesives and board adhesives.

Heat-resistant tile adhesive

This type of adhesive is a ready-mixed tile which works great in high temperature conditions. Tile adhesive can withstand temperatures up to 1000 °C! It comes in handy when ordinary tile cements are not enough. Ready mixed tile adhesives are used to fix tiles in fire surrounds, behind cookers, boilers, and radiators.

What’s more, with these high temperature resistant tile adhesives, it’s more than easy to fix a fibre rope seal to a heater door. We have to remember that tile adhesives are recommended in internal applications. When it comes to external applications, it’s worth choosing heat resistant adhesive Vitcas HB60.

Adhesive sealer

Now let’s focus on adhesive sealers – tools used to seal something. They are high viscosity emulsion primers that can be used with tile adhesives, fireplace renders, and heat-resistant plasters. The only difference between an adhesive sealer and an adhesive sealant is that the second one is any material that is used to seal a surface in order to prevent passage of a fluid. We can apply sealants to bricks, concrete, and masonry. They should be used onto materials such as ceramic tiles. We highly recommend using Vitcas PVA Adhesive Sealer.

Rapid setting adhesive

Rapid setting heat-resistant adhesive is a hydraulic bonded and rapid setting product. How to use it? Well, it would be perfect for stoves, tiled stoves, and fireplaces. Also, it can be used in heat storage construction in both outdoor and indoor applications. You can easily join single tiles or prefabricated elements. Rapid setting adhesive is suitable for joining external constructions, too.

Using rapid setting adhesive Vitcas HB10 is a great idea when we want to replace elements that hold the heat and then return the heat. It can be thickly loaded onto the tiles. This product is really worth recommending, because it has high strength when it dries. We cannot fail to mention that this high temperature adhesive can resist temperatures up to 750 °C.

Board adhesive

The last proposition is a high temperature adhesive that can be used with vermiculite boards, insulation boards, construction boards, and high temperature plasterboards. It is particularly good for the joints between boards. This ready mixed adhesive can serve as a product that fixes boards to blockwork or brickwork, especially when there’s a flat wall and the gap doesn’t exceed 5 mm.

You should bet on previously mentioned Vitcas HB60. It is available in two versions. The first one is a five kilogram bucket of heat-resistant glue. The second one is an easy-to-use 310 ml tube. Thanks to that, you can always get a product matching your needs and preferences.

 

high temperature resistant adhesives

 

Summary

It’s worth using heat-resistant adhesives because they provide the high temperature resistance that is required by some challenging applications. Nothing else can withstand exposure to high temperatures so well. There are a multitude of products of this type available on the market, so there is something for everyone!

 

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