At present, the domestic insulating glass production is divided into groove aluminum method and composite strip method, groove aluminum method is the earliest and more widely used production method, it is butyl rubber as the inner sealant, the outer layer is polysulfide glue, silicone glue and other sealant to do peripheral sealing to produce insulating glass. The performance and quality of insulating glass sealant is one of the important factors that determine the quality and performance of insulating glass. In the production and manufacturing process of insulating glass, some problems are often encountered, such as insulating glass leakage failure, poor bonding between the adhesive layer and the glass leading to short insulating glass service life, sealant vulcanization too fast resulting in blocking the glue machine and affecting the normal production, the rubber layer is not vulcanized or the adhesive layer surface can not be packed and affect the delivery date. How to deal with these problems encountered in the production process is the most concerned topic of insulating glass manufacturers. If the mechanism and performance of insulating glass sealant are understood, and combined and used in the actual production process, the above problems can be solved in a timely and better manner.

The curing rate of hollow glue is too fast

The curing rate of hollow glue is too fast, and the glue is cured before being used or the glue machine is blocked during the gluing process. The main reasons are as follows:

① High construction ambient temperature or glue temperature leads to high activity of glue, faster curing rate and shortened construction period.

② Excessive B component.

③ Glue machine A.B two components out of proportion.

The measures to be solved in practice are: appropriately reduce the proportion of B component, so as to extend the construction period to meet the construction requirements. For manual gluing, components A and B should be weighed accurately while reducing the amount of component B; For mechanical construction, the ratio system of the glue machine should be checked, the proportion of B component should be adjusted and reduced, and the glue machine should be cleaned at the same time.

The curing rate of hollow glue is too slow

Contrary to the curing rate of hollow glue is too fast, the curing rate of hollow glue is too slow, and the hollow glass produced can not be transported and packaged in time. The main reasons for the slow curing rate of glue are as follows:

① Low ambient temperature and low humidity lead to reduced activity of hollow glue and can not cure well;

② The proportion of B component is not enough.

Solution measures from the following aspects: appropriately increase the amount of B component, for manual gluing, increase the amount of B component should be accurately weighed; For mechanical construction, the ratio system of the glue machine should be checked, the proportion of B component should be adjusted and increased, and the glue mixer should be checked whether it is blocked. Conditional manufacturers can also use the method of heating and humidifying to promote the curing of hollow glue.

The viscosity of hollow glue is too large

When gluing in the low temperature season, due to the low temperature, the viscosity of hollow glue is too large, and it is hard to construction.

However, the decrease of temperature causes the viscosity of hollow glue to increase.

Solutions include:

① Improve the construction environmental conditions and increase the temperature of the construction site.

② Heat the hollow glue in an appropriate way.

Poor adhesion

The adhesive of hollow glue to glass, aluminum and other materials is poor or non-adhesive.

The original nature of this phenomenon: the surface of the material is not cleaned; Bonding is a process that takes a certain amount of time and is related to the environmental conditions of the construction site. The reduction of ambient temperature will prolong the bonding time. Material factors.

The solution measures are:

① Effective cleaning of the surface of the adhesive material with cleaning liquid/agent.

② Extend the maintenance time according to the environmental conditions.

③ Some materials such as coated glass, PVC profiles, etc., due to different ingredients or plasticizer seepage, all lead to poor bonding. These materials should be tested before first use to ensure bonding properties.

The glue machine produces uneven glue

In the process of gluing, the glue is not uniform, and sometimes there is a section of curing, and the other section is not curing.

The reasons for this phenomenon are: there are foreign bodies in the glue machine to cause blockage, or one-way blockage or check valve failure.

The solution measures are: inspection and cleaning of the glue machine, elimination of foreign bodies, replacement of failed parts; According to the equipment instructions, adjust the proportion of A. B component.