Polyurethane Adhesives

What are Polyurethane adhesives?

Polyurethane, or PU adhesives, have grown in popularity over the years due to their adaptability and outstanding performance in a wide array of applications, as they can give you a very high-strength and high-performance solution. They are renowned for their exceptional bonding abilities, durability, and resistance to a range of environmental factors.

Polyurethane adhesives, often abbreviated as PUR adhesives, are formed by the chemical reaction between isocyanates and polyols. The resulting polymers exhibit good flexibility, which makes them suitable for use in various industrial and commercial applications. Additionally, these adhesives are characterized by their excellent adhesion to a wide array of substrates, including wood, metal, glass, ceramics, rubber, and certain plastics.

Polyurethane adhesives explored

Let’s explore this range of Polyurethane adhesives in more detail.

Caravan Panel Repair Adhesive – A5045

Caravan Panel Repair Adhesive A5045 7.5kg kit is a Thixotropic paste, no-drip, two-part two-component polyurethane adhesive that is specifically designed for the repair of external and internal caravan panels where the aluminium sheet has become delaminated or where accidental damage has occurred.

The panel repair adhesive cures to form a hard, tough, resilient bond that is resistant to water, solvents, and heat. It can also be used for bonding metals, plastics, and building surfaces such as concrete, asbestos boards, etc. It has found use as a body filler and for repairing damaged concrete.

This two-component adhesive is available in the following sizes:

• 7.5 KG Kit Caravan Panel Repair Adhesive – A5045

PU PVC / ABS Adhesive – P1002

P1002 PVC inflatable adhesive allows you to securely bond and safely repair PVC inflatable products, including boats and lifesaving equipment.

Available in the following sizes:

• 250ml PU PVC / ABS Adhesive – P1002
• 250ml Kit PU PVC / ABS Adhesive – P1002
• 1 Litre PU PVC / ABS Adhesive – P1002
• 1 Litre Kit PU PVC / ABS Adhesive – P1002
• 5 Litres PU PVC / ABS Adhesive – P1002

PU Panel Adhesive Soudaflex 40FC Box of 12

PU Panel Adhesive Soudaflex 40 FC which is a high-quality polyurethane sealant which can be used on all usual building and a wide range of substrates, metals and polyesters.

It is a box of 12 tubes of one-component sealant with high modulus for a wide range of sealing and bonding applications.

Available in the following colours:

• 12 x 310ml PU Panel Adhesive – White

MS Polymer Sealant Fix All Crystal Clear Box of 12

MS Polymer Fix All Crystal Clear  which is a high quality neutral, elastic, one-component polyurethane adhesive that is used as a construction joint and adhesive sealant based on SMX-Polymer.

Available in the following sizes:

• 12 x 290ml MS Polymer Sealant Fix All Crystal Clear

Woodworking Superfast PU – P1001

Woodworking Superfast PU P1001 is a liquid polyurethane-based adhesive in a squeezy 750gm bottle which is ideal for workshops and production lines. The adhesive is suitable for all woodworking applications, both internal and external, as it is a D4 water-resistant adhesive providing a strong, flexible bond when required, making it suitable for a wide range of materials.

Available in the following sizes:

• 750g Woodworking Superfast Pu – P1001

Advantages of Polyurethane Adhesives

Polyurethane Adhesives have many advantages. These include:

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Single-component Moisture Curing

A single-component moisture-curing polyurethane adhesive is a strong glue that hardens when it comes into contact with moisture in the air.

Consequently, this type of glue is ideal for bonding various materials like wood, metal, and plastics, and the adhesive is easy to use as it requires no mixing – offering you a reliable, waterproof bond that’s perfect for both indoor and outdoor projects as a result.

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Adaptability

Polyurethane adhesives can bond a variety of substrates, making them a popular choice for numerous applications. Their compatibility with different materials allows them to be used in a wide array of industries, such as construction, automotive, and marine sectors.

High Bond Strengths

Polyurethane adhesives provide a robust bond between different materials, ensuring long-lasting connections. They can also bond dissimilar materials, making them useful in many product assemblies.

Resistance to Varying Operating Temperatures

Polyurethane glues perform exceptionally well in both high and low temperatures, retaining their strength and flexibility. This property allows them to be used in applications exposed to extreme temperature variations.

Water and Chemical Resistance

Polyurethane adhesives exhibit excellent resistance to water, oils, and certain solvents along with an excellent chemical resistance as well. This good resistance makes them an ideal choice for applications that require a waterproof or chemically resistant bond.

Gap Filling Capability

Polyurethane adhesives can fill gaps and irregularities in the materials being bonded, providing a more secure and durable bond.

Fast Curing

Many polyurethane contact adhesives have fast-setting cure times, making them suitable for high-speed production lines and reducing assembly time.

Applications of Polyurethane Adhesives

These adhesives are suitable for a large number of applications. Some of these include:

Construction Industry

Polyurethane adhesives are often used as construction adhesives due to their strength, flexibility, and resistance to environmental factors. They are ideal for bonding building materials such as wood, concrete, and metal.

Automotive Industry

Polyurethane adhesives play a crucial role in the automotive industry, particularly in the assembly of vehicle components. They can bond various materials such as metals, plastics, and glass, ensuring a durable and reliable connection.

Marine Industry

Polyurethane adhesives’ water resistance and durability make them suitable for marine applications. They are commonly used to bond boat components and seal surfaces.

Footwear Industry

Polyurethane adhesives, which bond shoe components such as soles, uppers, and insoles, are a popular choice in the footwear industry due to their flexibility and strength.

Furniture Industry

Polyurethane adhesives are employed in the furniture industry for the assembly of wooden and metal components, ensuring strong and long-lasting bonds.

What types of materials can polyurethane adhesives bond?

These adhesives can bond a wide array of substrates, including wood, metal, glass, ceramics, rubber, and certain plastics. This compatibility with different materials makes them suitable for use in various industrial and commercial applications.

Are polyurethane adhesives waterproof?

Yes, these adhesives exhibit excellent resistance to water, making them an ideal choice for applications that require a waterproof bond. They are often used in marine applications and for bonding materials exposed to moisture.

Can polyurethane adhesives bond dissimilar materials?

Yes, these adhesives can bond dissimilar materials, such as metal to plastic or wood to glass. This property makes them highly versatile and useful in many product assemblies where various materials are combined.

How do I apply polyurethane adhesive?

To apply polyurethane adhesive, clean and dry the surfaces of the materials you intend to bond. Depending on the adhesive, apply a thin, even layer to one or both surfaces. Press the surfaces together and hold or clamp them until the adhesive cures. Follow the instructions for each adhesive for curing times and recommended application techniques.

How long does it take for polyurethane adhesive to cure?

The curing time for polyurethane adhesives varies depending on the product and environmental conditions such as temperature and humidity. Some adhesives may cure within a few hours, while others may require 24 hours or more.

Can polyurethane adhesives be used for outdoor applications?

Yes, these adhesives are suitable for outdoor applications due to their excellent resistance to water, heat, cold, and certain chemicals. This durability makes them ideal for bonding materials that are exposed to environmental factors and weather conditions.

Are polyurethane adhesives safe to use?

Generally, these adhesives are safe to use when following the manufacturer’s guidelines and safety precautions. It is essential to use the adhesive in a well-ventilated area, wear appropriate protective gear such as gloves and goggles, and avoid contact with skin and eyes. Always read and follow the safety data sheet.

Please note: As of 24 August 2023, training is required for professional and industrial users of polyurethane adhesives and sealant products within the EU and UK.

How can I remove cured polyurethane adhesive?

Removing cured polyurethane adhesive can be challenging. Mechanical methods, such as scraping or sanding, can be effective in some cases. Alternatively, you can use specialised adhesive removers or solvents, such as acetone or mineral spirits, to soften the adhesive before attempting to remove it. Always follow the manufacturer’s guidelines for adhesive removal and take the necessary safety precautions.

Polyurethane adhesives overall

Polyurethane adhesives have become indispensable in various industries due to their exceptional bonding capabilities, durability, and resistance to environmental factors. Their ability to bond a diverse range of substrates and withstand extreme temperature fluctuations makes them an ideal choice for numerous applications. As technology advances and the demand for more efficient and reliable adhesives grows, the importance of polyurethane adhesives is set to continue on an upward trajectory.

Not sure if Polyurethane adhesives are right for your requirements?

If you are not sure if these adhesives are correct for your requirements, please contact us to discuss your requirements and specific application, and we can point you in the right direction.

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About Bondrite Adhesives

Here at Bondrite, your adhesive needs are our top priority, with a customer service team that can answer any question you may have about adhesives. So, if you are not sure if these are right for you, give us a call, and we will happily help you.

Consequently, as a dedicated family-run business with decades of experience in the industry, we like to believe our customer support is of a very high quality. We are not just about selling adhesives; we’re about building lasting relationships, and we can provide you with a high level of customer service and further information.

As a result, we understand that choosing a suitable adhesive is crucial for your project, company, and industry. That’s why we’re here to make it easy for you.

With Bondrite, you get more than just a glue or an adhesive. You receive a commitment to quality service.

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Need Expert Advice?

Our friendly team is ready to discuss your requirements over the phone, meticulously review your technical drawings, and provide tailored recommendations where required.

If we are not the perfect fit for your needs, we will direct you to someone who is. We can also offer you very good delivery rates, with free delivery Monday through Friday and next-day delivery to the United Kingdom (UK). Don’t just buy adhesives—choose Bondrite for a solution that sticks!