Silane modified polymer - a new solution for low-modal assembly building glues

In assembled buildings, the joint surfaces between building components are often sensitive and easily broken, typical examples include dusting, aeration concrete, and external insulation systems. If the sealant has only slight elasticity, when the seam is stretched, the sealant does not have enough capacity to displacement with the component substrate, and the seam edge will be damaged by too much pull. Low-mod elastic sealants are thus

. This sealant stretches or contracts even under the action of small forces, and when the stress disappears, it is basically restored to its original condition. In this way, the sealant cushions the displacement of the component, thereby reducing stress on the edge of the seam.
the joint surfaces or seam edges between building components are often sensitive and easy to break
conventional low-volume polyurethane sealants currently on the market often contain solvents, while silicone sealants cannot be colored. The use of new silane modified polymers as sealant substitins, the above problems can be solved.
This silane modified polymer belongs to the silane crosslink silicone polymer, and has the typical advantages of silicone and polyurethane, can be formulated without adding tin as needed to produce different formulations, while its low viscosity, easy processing, can be used in wood flooring glue, assembly glue, elastic gel sealant and waterproof film (e.g. for roofing).
high elasticity, low mould
In assembly buildings, adhesives made from silane modified polymers are often used to seal the connection between assembly modules and building structures. Due to its excellent surface adhesion, mechanical strength and flexibility, it is able to balance the stress and deformation that act on the material itself and at the connection of the material. This prevents cracks caused by seasonal temperature fluctuations and water from seeping into assembled buildings for increased durability.
new assembly building silane modified polymer, introduced by WACKER Chemical, the world's second-largest silicone manufacturer, contains two specifications: GENIOSIL® XM 20 and GENIOSIL® XM 25. They fully meet the stringent requirements of DIN EN ISO 11600 standards, producing low-volume sealants with a mold volume of less than 0.4 N/mm2 and a rebound rate greater than 70%. Suitable as a base for single-component adhesives and sealants, these two products not only offer low viscosity, no additional solvents and excellent adhesion, but also can be mixed in any proportion with all other WACKER silane modified polymers, i.e. a wide range of formulation options according to the needs of the manufacturer.
tests have shown that sealants ® XM using GENIOSIL and XM can reliably bond a wide range of substrates
GENIOSIL® XM 25: The telescopic seam and window sealant substitut
γ-silane modified polymer GENIOSIL® XM 25 can be used to make low-volume sealants with extremely high return elasticity. In the laboratory, according to DIN EN ISO 7389, the module of the test formulation is close to 0.3 N/mm2 and the rebound rate is close to 90%.
GENIOSIL® XM 25 can be used to make telescopic seams and sealants for connecting seams that are subject to high stress, especially when protecting sensitive seam edges. Ideal for connecting seams between telescopic seams, window frames, and walls in assembled buildings.
GENIOSIL® XM 25 can be rationed with a low-volume, highly flexible sealant with extremely high resilience
the following test data show that sealants made with GENIOSIL® XM 25 have shorter skin times (left) and lower moulds (right) than comparable products. This better prevents damage to sensitive seam edges, such as prefabribriited concrete components or window frames.
GENIOSIL® XM 20: General-purpose adhesive base
α-silane modified polymer GENIOSIL® XM 20 can be used to make adhesives with excellent elasticity and no plasticizers. Depending on the formulation, the laboratory measured fracture elongation rate of up to 700% and tensile strength of up to 4N/mm2. In addition, genIOSIL® XM 20 can be appropriately extended adhesive surface skining time, especially suitable for large-scale construction, which allows users to have sufficient dressing time.
this product is the ideal substation for wood flooring glue and assembly glue, which can be used to make wood floor glues free of solvents and plasticizers without the need to label hazardous substances. In addition, genIOSIL® XM 20 can also be equipped with a wide range of adhesive properties, construction workers can easily complete the construction site adhesive sealing work.
GENIOSIL® XM 20 can be used to make adhesives that are extremely elastic and do not contain plasticizers, typical applications including wood floor glue and universal sealant
conclusion:
Is a soft and elastic sealant indispensable for elastic bonding or sealing of building components. Today, with the advent of WACKER silane modified polymers, sealant manufacturers can produce high-quality, low-volume sealants and adhesives without even plasticizers. In addition to being suitable for construction, the GENIOSIL® XM family of products can also be used as reactive plasticizers to make high-quality, non-migrating sealants, especially for marine and industrial applications, and GENIOSIL® XM can also partially replace standard polymers to change the performance of the final product.