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Technical analysis of MS adhesive

2018-07-17

The MS Adhesive is a one-component modified silane sealant that can be used with a glue gun. It reacts with water to form an elastic material whose surface drying time and curing time are related to temperature and humidity, and the curing time is also related to the depth of the seal. Increasing temperature and humidity can reduce surface drying and curing time, and low temperature and low humidity will delay the process. The MS sealant is a solvent free, isocyanate-free, silicone-free, PVC-free and odorless material. It has been proven to have excellent UV resistance, so it can be used not only indoors but also outdoors. It does not require special cleaning primers for handling, especially for metals and plastics. When uncured, it can be coated with an aqueous or organic solvent-containing paint. Wet and wet paint can be used for the sealing of joints and joints of automobiles, sealing of rubber and glass surface, sealing of trains, boats and metals. It can also be used in equipment, electrical, plastic, air conditioning, ventilation and other industries. Sealed and bonded. Good adhesion to most materials: such as metal sheets (defatted, phosphorylated, hot-plated, electroplated) rust, brass, aluminum (polished, anodized) glass, PA, PVC, PE , PUR-RIM and most thermoplastics have adhesion.


Performance comparison and application analysis of silane modified sealant, polyurethane sealant and silicone sealant.


Silane-modified sealant, the main component of which is actually polyurethane component, and silicone is only used for capping modification;


Its mechanical properties are much better than silicone sealant, and the range is also different from silicone sealant; from the author's point of view, in most building seals (such as interior decoration, cement joints, wood floor bonding, etc. Use) silane modified sealant has the advantage far greater than silicone sealant;


It is also a very important factor; because silane-modified sealant resin can have much better mechanical properties than dimethyl siloxane, so the cost advantage will be gradually effect in the later application; silicone sealant is a highly competitive market, product quality have high and low (mainly based on low performance). If the problem is considered in terms of mechanical properties, the same cost, the mechanical properties of silane-modified rubber will be much higher than silicone rubber. ;


The advantages of silicone rubber are weather resistance and low technical threshold; and with the gradual strictness of environmental regulations, the cost of dimethyl siloxan will become higher and higher; the cost advantage of silicone rubber will slowly lose; this phenomenon. I personally think that people give silicone sealants too many applications and functions, and many of them should not use silicone sealant; polyurethane sealant has only mechanical properties advantages; its environmental performance and cost is much higher than silane-modified rubber and silicone rubber; in some industrial places, such as automobiles and ships, the use of sealant, polyurethane has a relatively large market share, and now, this kind of market is slowly It is eroded by silane-modified rubber; the main reason is that the silane-modified rubber has almost the same mechanical properties as the polyurethane rubber and the same surface coating properties; the storage stability is the same as that of the silicone rubber; the environmentally-friendly volatiles are better than the polyurethane. The glue is much lower; the adhesion improvement caused by the silicone modification makes most of the primers for the polyurethane glue redundant; the advantage is very obvious;


Abroad, the market share of silane-modified rubber is increasing year by year; the reason for this is that cost has a great effect on the substitution of silicone and the mechanical properties of polyurethane.


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