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The Effect Of Moisture On Two-Component Polyurethane

Adhesive Industry

Two-component polyurethane adhesive is composed of component A (isocyanate component) and component B (polyol component). It has excellent properties such as good wear resistance, chemical resistance, and adhesion, and is widely used in coatings, adhesives, foams, etc. However, during production and use, two-component polyurethane is easily affected by moisture, resulting in bubbles and affecting product performance.

The effect of moisture on two-component polyurethane adhesive is mainly reflected in the following aspects:

  1. Reduced Reaction Speed: Moisture reacts with the isocyanate component, reducing the content of effective components and affecting the curing speed.
  2. Reduced Hardness: Moisture participates in the curing reaction, and the resulting product has a lower hardness, affecting product performance.
  3. Bubble Generation:Moisture reacts with the isocyanate component to generate carbon dioxide gas, forming bubbles, affecting the appearance and performance of the product.
  4. Reduced Bonding Strength:Moisture affects the bonding properties of two-component polyurethane and reduces the bonding strength
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Xintao's Solution For PU

Xintao activated molecular sieve powder provides a solution for improving the effect of polyurethane adhesive. As a white powdered physical adsorbent, Xintao molecular sieve powder can effectively adsorb water molecules, carbon dioxide molecules, and hydrogen sulfide molecules in polyurethane components, and it is not easy to release at room temperature and pressure, thereby improving the effect of polyurethane adhesive in a long term.

Activated Molecular Sieve Powder 3A
Activated Molecular Sieve Powder 4A
Activated Molecular Sieve Powder 5A
Activated Molecular Sieve Powder 13X
How it works

Adhesive Application

Xintao activated molecular sieve powder is widely used in the production of two-component polyurethane. While absorbing moisture and carbon dioxide gas, it can block the carbon dioxide produced by the reaction of colloid raw materials and water, thereby reducing moisture, eliminating bubbles, improving curing effect, increasing strength and extending service life.

Battery Structural Adhesive
Electronic Potting Adhesive
Automotive Adhesives
Repair Adhesive
Aluminium Honeycomb Panels Adhesive
Seaming Adhesive
Ab Glue
Insulating Glass Strips
Metal Bonding Adhesive
PU Plastic Track
Paint Coating

When you need experience, we have it covered.

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New Energy Vehicle Battery Adhesive

Xintao cooperates with China’s largest new energy vehicle production company to provide powdered molecular sieves for battery structural adhesives

Honeycomb Panel Structural Adhesives

Customer is a honeycomb panel structural adhesive manufacturer in the building materials industry. Activated molecular sieve powder is used to eliminate moisture and bubbles.

Potting Compound for Electronics

Xintao cooperates with well-known companies in the adhesive industry to produce activated molecular sieve powder as raw materials for potting glue in the electronics industry,

Why Choose Xintao's Activated Molecular Sieve Powder

Selective Adsorption
Selectively adsorb molecules according to molecular size and polarity

Low Water Content
The moisture content of Xintao activated molecular sieve powder is as low as 0.5% when it leaves the furnace, and it can be lower than 1.5% after packaging and storage.

Micron Powder
XINTAO activated molecular sieve powder is uniform in powder form, and the particle size is 2-4 microns, which will not clog the mesh.

Benefit You Get

Strict Quality Control

Xintao has always insisted on quality first, and we will provide you with products that meet international high standards.

Complete Production Line

Xintao Factory is equipped with a series of industry-leading production equipment, with 10 fully automatic integrated production lines.

Professional Service

We adhere to the service concept of customer first. We will provide you with 24-hour free consultation, full-process technical support for products and free sample delivery services, etc.

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