Insulating Glass Desiccant

Yuanying insulating glass desiccant is made of attapulgite clay through special technology, and is specially developed for insulating glass, considering all kinds of situation among the using process of insulating glass. Insulating glass desiccant has the following function:

1) Adsorbing the moisture in glass interlayer, the moisture comes from production period;

2) Adsorbing the moisture which enters insulating glass among its life period, to keep low dew point in insulating glass;

3) Adsorbing volatile organic solutes in glass interlayer, organic solutes come from production period and use period.

Attapulgite has the ability of selective adsorption, and its surface has a large number of electronegativity OH-, showing polarity. It is easy to adsorb polar molecule H₂O and is very difficult to adsorb nonpolar molecules such as N₂, O₂, inert gases. Tested by Shanghai Research Institute of Chemical Industry, nitrogen adsorption capacity of insulating glass desiccant is less than 0.53 mg/g, and nitrogen adsorption capacity of 3A molecular sieve is less than 2 mg/g. If 4A molecular sieve used as insulating glass desiccant, it adsorbs H₂O at the same time will adsorb N₂, O₂, inert gases, this will cause glass interlayer negative pressure and occur introflexion; If the temperature increases, 4A molecular sieves will desorb and release gases, cause glass interlayer positive pressure and excurvature. Thus continue alternating roles, sealant will lose effectiveness and insulating glass will become invalid.

Attapulgite fibres partly will build into a small amount of large channels, plus its strong selective adsorption ability of organic solutes, therefore can absorb a small amount of volatile organic solvents in the sealant. Over the past few years of practices has proved that using Yuanying desiccant to produce insulating glass there is no phenomenon of organic fog.

Yuanying Insulating Glass Desiccant has the incomparable advantages:

1) Its moisture content is low. Yuanying moisture in packing is controlled within 1%, far below the average level 1.5% of this industry.

2) Depth absorption ability is strong, can fully absorb moisture in insulating glass, ensuring low dew point of insulating glass.

3) Insulating glass desiccant almost doesn’t adsorb O₂, N₂ and inert gases, so it can ensure that insulating glass doesn’t occur introflexion and excurvature, prolong the service life of insulating glass.

4) Good strength, no cracking; less dust, not falling powder. Attapulgite has good caking property, after sintering it has high strength, little dust, low attrition rate.

5) Non-corrosive effect to aluminum alloy frame and sealing strip.

6) Insulating glass desiccant can adsorb volatile organic solutes in glass interlayer.

7) The initial static water adsorption speed is slow. This kind of circumstance is good for insulating glass, the initial adsorption quantity is small, the residual adsorption quantity is big, can prolong the service life of insulating glass.

8) Large temperature rise, releasing small amount of gas. The warming trend of insulating glass desiccant has been to balance, and this makes the attapulgite more advantages. In general, if the volume of releasing gas is qualified, the higher temperature rises, the better desiccant is.