Secondary sealant is to protect a contour of primary sealing from mechanical, static pressure and damage because later insulated glass endures different pressure, atmospheric influence and vibration. Thus the main characteristics for secondary sealants are long term elasticity, perfect adhesion to glass, spacer, tenacity to atmospheric influence and aging.
Certainly secondary sealants are represented in the form of two-component and one-component raw material masses. The differentiation lets use the most appropriate sealant suiting consumers’ specifics.
1. Two-component sealants.
Such sealants consist of 2 components: A and B (basis and hardener). Their offset happens on condition of some proportion with the help of extruder. These sealants also can be divided into two types according to the main component: polysulfide and polyurethane.
The main advantage of polysulfide sealants is high rate of adhesion to glass and aluminium, low gas permeability and ease of maintenance of extruders. Rheological properties of this product make it appropriate for manual and automated processing.
In turn polyurethane sealants have almost the same characteristics as polysulfide ones. The main differences are used raw materials and formula also a bit more attention for producing of an extruder. However all these factors are not quite important looking at the price of an polyurethane sealant which lower that the polysulfide one’s (not modified).
Winstyle company offers next polysulfide and polyurethane sealants to its consumers:
Gran Polychem™ (Ukraine) - JOD-32
Winstyle company is an exclusive representative of Gran Polychem™ in Ukraine.
Polyurethane sealant JOD-32 is innovative two-component sealant based on polyurethane polymer which is absolutely new offer on the market of sealants for insulated glass production. The sealant is relevant to the highest technical and ecological norms thanks to using raw materials form the range of green chemistry (proved by the results of compliance tests with DIN EN 1279. The product doesn’t include any light substances and solvents there are no harmful fumes. Polyurethane sealant JOD-32 has balanced thixotropy index, dynamic viscosity, adhesion to glass and spacer, shrinkage after curing, deformation resistance and polymerization time. It has low indexes of vapor and gas permeability, stable to aging from the influence of UV. All these characteristics demonstrate the ability to use it on all the types of manual and automated equipment for application of secondary sealant.
Tightness: A component (1780 ± 5) kg/m3, B component (1080 ± 5) kg/m3
Set (А+В) – 220л
Detailed information: www.granpolychem.eu
Polysulphide Encapsulant
ТКК (Slovenia) – TIOELAST TM
Sealants are intended for the manufacture of conventional insulating glass units and insulating glass units filled with gas.
Tioelast TM sealants are compatible with all materials used in the manufacture of insulating glass units. They harden quickly, have low gas and vapor permeability. They are well squeezed out at low temperatures. They do not contain solvents. They are steady to different weather conditions: rain, snow, extreme temperatures. They have excellent adhesion to aluminum, steel, plastic spacers and glass.
Certified by IFT Rosenheim according to DIN EN 1279 part 4.
Density: A component (1870 ± 20) kg/m3, B component (1570 ± 20) kg/m3
Set (А+В) – 203,5L
2. One-Part Sealant.
One-component sealants are easy to use and simple in production. They have a fairly low vapor permeability, as well as excellent adhesion to the spacer and glass.
One-component sealants are represented by two main groups: Hot Melt and Silicone.
Hot Melt could well replace polyurethane and polysulfide based sealants, since it has similar quality features. The sealant hardens very quickly, provides excellent protection against steam and moisture penetration.
Hot Melt has some negative properties. Its peculiarity is that as the temperature rises, this sealant begins to soften and is no longer able to provide glass unit with strength. Thus the sealant flows into the lower part of the window, where hardens when the temperature drops. As a result, cracks appear in the window, then moisture appear in these cracks, and this leads to the destruction and deformation of the entire glass unit.
Silicone sealants are made on the basis of low molecular weight silicone rubbers. Such a sealant has several positive quality characteristics:
- Water resistant
- Good adhesion to frame and glass
WinStyle offers its customers one-component sealants of the following manufacturers:
Hot Melt
SAS (Germany) – HM 1000
Hot Melt is made from high quality synthetic polymers and elastomers, butyl rubber and resins for excellent adhesion to glass and metal / plastic spacers.
Due to a thixotropy, low tension and quickness of polymerization, it is ideal for manufacturers who need to produce quickly and take out finished goods. The HM1000 is steady to aging from an UV, extreme temperatures and water influence.
Hot Melt is applied with an extruder with a melting point: 180°C - 200°C
Packing: Preform 6,5kg
Silicone sealants
ТКК (Slovenia) – Tekasil T
One of the best silicone sealants on the Ukrainian market, based on a paste-like neutral oxime-silicone.
It is especially recommended for using wherein materials are exposed to strong influence of UV ray irradiation.
It possesses a low vapor permeability comparable to polysulfide sealants.
It has excellent adhesion to spacers (aluminum, plastic, metal) and glass. High elasticity allows to save properties during a 20% deformation. It is steady to various climate terms, rain, snow, extreme temperatures (-40 ° C + 180 ° C.)
It is inflicted with a poke or air gun.
Packaging: sausage 600 ml