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The following seven points shall be noted during the construction of Buy POLYURETHANE SEALANT FOR GENERAL USE on sales

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The following seven points shall be noted during the construction of Buy POLYURETHANE SEALANT FOR GENERAL USE on sales

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  • Time of issue:2022-08-12
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(Summary description)The following seven points shall be noted during the construction of Buy POLYURETHANE SEALANT FOR GENERAL USE on sales:
1. Treatment of the sealed surface: before construction, the garbage and sundries left after the previous construction shall be cleaned, and then the floating ash shall be treated with a blower or vacuum cleaner. If the foundation surface is wet, it shall be dried with a blowtorch and brushed with a wire brush to remove the cement chips and dust after baking. Remove the oil stain, plastic attachments, dust and other sundries on the adhered surface (Buy POLYURETHANE SEALANT FOR GENERAL USE on sales does not stick to plastic and oil stain, and can be operated with hand-held cutting machine, grinding wheel, steel brush and other tools). Blow the sundries with a blower to expose the solid structural layer on the glued surface. The joint surface must be completely dry, clean and frost free. All dust and cement slurry on the surface must be cleaned. The adhered surface must be absolutely dry and flat to prevent poor adhesion. The rust layer and protective paint on the metal surface shall also be removed. If the structure is not dry, it can be dried by blowtorch.

The following seven points shall be noted during the construction of Buy POLYURETHANE SEALANT FOR GENERAL USE on sales

(Summary description)The following seven points shall be noted during the construction of Buy POLYURETHANE SEALANT FOR GENERAL USE on sales:
1. Treatment of the sealed surface: before construction, the garbage and sundries left after the previous construction shall be cleaned, and then the floating ash shall be treated with a blower or vacuum cleaner. If the foundation surface is wet, it shall be dried with a blowtorch and brushed with a wire brush to remove the cement chips and dust after baking. Remove the oil stain, plastic attachments, dust and other sundries on the adhered surface (Buy POLYURETHANE SEALANT FOR GENERAL USE on sales does not stick to plastic and oil stain, and can be operated with hand-held cutting machine, grinding wheel, steel brush and other tools). Blow the sundries with a blower to expose the solid structural layer on the glued surface. The joint surface must be completely dry, clean and frost free. All dust and cement slurry on the surface must be cleaned. The adhered surface must be absolutely dry and flat to prevent poor adhesion. The rust layer and protective paint on the metal surface shall also be removed. If the structure is not dry, it can be dried by blowtorch.

  • Categories:News Center
  • Author:
  • Origin:
  • Time of issue:2022-08-12
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The following seven points shall be noted during the construction of Buy POLYURETHANE SEALANT FOR GENERAL USE on sales:

1. Treatment of the sealed surface: before construction, the garbage and sundries left after the previous construction shall be cleaned, and then the floating ash shall be treated with a blower or vacuum cleaner. If the foundation surface is wet, it shall be dried with a blowtorch and brushed with a wire brush to remove the cement chips and dust after baking. Remove the oil stain, plastic attachments, dust and other sundries on the adhered surface (Buy POLYURETHANE SEALANT FOR GENERAL USE on sales does not stick to plastic and oil stain, and can be operated with hand-held cutting machine, grinding wheel, steel brush and other tools). Blow the sundries with a blower to expose the solid structural layer on the glued surface. The joint surface must be completely dry, clean and frost free. All dust and cement slurry on the surface must be cleaned. The adhered surface must be absolutely dry and flat to prevent poor adhesion. The rust layer and protective paint on the metal surface shall also be removed. If the structure is not dry, it can be dried by blowtorch.

2. Before construction, 50mm wide protective tape shall be pasted at 10mm on both sides of the gap to prevent the surface of the structure from being polluted by the redundant Buy POLYURETHANE SEALANT FOR GENERAL USE on sales during construction.

3. Painting primer: for the project where the design requires the use of primer, or for the sealing of the long-term immersion part, the primer shall be painted on the adhered surface and dried to form a film (the primer shall be provided separately).

4. Preparation of butyl sealant: Mix 1 bucket of Buy POLYURETHANE SEALANT FOR GENERAL USE on sales (component A) and 1 bag of black curing agent (component B) until there is no color difference. The specific methods are as follows: pour two groups of single component polyurethane sealant A and B onto a glass plate or floor tile at the same time (the floor tile requires 60 cm square is the best). According to the mixing ratio given in the manual, the mixing ratio a: B = 100:10 ~ 100:14 (mass ratio), the two components are mixed evenly and can be used. At the time of delivery, our company has been proportioned according to the mass ratio and opened with a plastic cylinder. Users do not need to worry about the mass ratio, When using, just open the package and mix component A and component B together, and then use manual mixing for not less than 9 minutes and hand-held electric drill for not less than 6 minutes. It is better to use mechanical mixing method, and the mixing time should be long rather than short, so as to avoid partial curing caused by uneven mixing and failure to achieve waterproof sealing effect. Whether mixed by machine or by hand, the color shall be uniform without color difference. During mixing, bubbles shall be prevented from mixing. The prepared Buy POLYURETHANE SEALANT FOR GENERAL USE on sales shall be used up within 2 hours. Otherwise, it will be difficult to construct and reduce performance due to slow thickening. Therefore, attention shall be paid to how much to use, otherwise, waste will be caused due to too much to use.

5. When applying the Buy POLYURETHANE SEALANT FOR GENERAL USE on sales, apply a layer of the prepared sealant on both sides of the joint with a gray knife, and then insert the Buy POLYURETHANE SEALANT FOR GENERAL USE on sales into the middle of the joint channel and reach the specified thickness. When it is difficult to construct narrow joints and special parts with a gray knife, the mixed single component polyurethane sealant can be loaded into the construction gun and then driven into the construction parts. During operation, try to prevent entrained bubbles from entering the butyl sealant. For the parts of materials that are not easy to be bonded, the bonding effect shall be ensured. It is best to apply a special primer first and then apply the adhesive (the primer is provided separately). Bubbles shall be prevented from mixing. Remember to compact and fill the sealing place to prevent bubbles from mixing. The Buy POLYURETHANE SEALANT FOR GENERAL USE on sales must be used within 2 hours, because the paste like colloid starts to solidify under the action of the chemical composition after 2 hours. (the surface drying time is ≤ 24 hours, and the water filling test can be conducted after 7 days, and the performance is all reached in 28 days.)

6. After the construction is completed, the protective tape on both sides of the gap can be removed, and water washing and rain shall be avoided within 24 hours.

7. Inspection of construction quality: after the construction of Buy POLYURETHANE SEALANT FOR GENERAL USE on sales, the joints shall be comprehensively inspected. In case of missing scraping, unevenness and sagging, they shall be repaired in time. The surface drying time of the Buy POLYURETHANE SEALANT FOR GENERAL USE on sales is 24 hours, but the strength can reach 80% after 7 days. Therefore, before the single component polyurethane sealant is fully cured, attention should be paid to protection to prevent rain intrusion and reduce the performance. The closed water test must be conducted after 7 days of construction. Good adhesion; Good elasticity, excellent resilience, suitable for dynamic joints; Good weather resistance, service life up to 15-20 years; Excellent oil resistance; Biological aging resistance; The price is moderate. Buy POLYURETHANE SEALANT FOR GENERAL USE on sales also has some disadvantages. For example, it cannot be heat-resistant for a long time; Light color formula is susceptible to UV aging; The storage stability of one-component adhesive is greatly affected by the packaging and the outside world, and the curing is usually slow; Bubbles and cracks may occur under high temperature thermal environment; Primer is required on many occasions. At the same time, the water resistance of Buy POLYURETHANE SEALANT FOR GENERAL USE on sales is also poor, especially the alkali water resistance.

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