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© Boardworks Ltd 20051 of 19 Resistant Materials Adhesives These icons indicate that teacher’s notes or useful web addresses are available in the Notes Page. This icon indicates that the slide contains activities created in Flash. These activities are not editable. For more detailed instructions, see the Getting Started presentation. © Boardworks Ltd 2005 1 of 19
© Boardworks Ltd 20052 of 19 Learning objectives © Boardworks Ltd 20052 of 19 Learning objectives To understand that different adhesives are used with different materials and for different purposes.
© Boardworks Ltd 20053 of 19 There are two basic ways of joining materials: In this section we are going to look at adhesives. 1. temporary, using nuts and bolts, etc. 2. permanent, using adhesives. Joining components
© Boardworks Ltd 20054 of 19 Early adhesives were made from animal bones. They were strong but limited: they had to be heated to melt in small pots in the workshop and were damaged by heat, water and fungus. Modern glues are made from synthetic polymers instead! Early adhesives
© Boardworks Ltd 20055 of 19 When adhesives fail to stick things together it is usually because of poor surface preparation. Dust and grease are particular hazards. Grease from your hands may also make the surface unsuitable for joining. Prepare the surface before applying any adhesive, ensuring there is no dust, grease or water on the surface. A smooth surface is needed for PVA while a rough surface is required for epoxy resin. Adhesives
© Boardworks Ltd 20056 of 19 safe to use not effective in damp conditions, although a waterproof PVA is available quick drying (it takes 2–4 hours to dry). PVA is a white, ready-mixed liquid, used for joining porous materials including wood. It is: PVA will not fill gaps – you must make sure that the pieces fit together well and use a clamp to join the two pieces. Excess glue can be removed with a damp cloth. PVA
© Boardworks Ltd 20057 of 19 Using PVA
© Boardworks Ltd 20058 of 19 is a powder which has to be mixed with water needs to be clamped while setting is stronger than PVA can be used as a filler. Waterproof synthetic resin wood glues, such as Cascamite, are used for building boats or making outdoor furniture. Synthetic resins Cascamite:
© Boardworks Ltd 20059 of 19 Apply an even layer to both surfaces to be joined. Wait for 10–15 minutes until the surfaces are touch dry. They do not need clamping. The surfaces will stick as soon as they touch each other. The pieces need to be lined up carefully as they can not be repositioned. Contact adhesives can be used to join dissimilar materials, such as plastic laminate and MDF. Caution! Use contact adhesives in a well ventilated area because of fumes. Contact adhesive
© Boardworks Ltd 200510 of 19 The two parts are mixed together. The hardening process starts immediately and cures to full strength within 24 hours. Epoxy resin adhesives, such as Araldite, come in two parts: the resin and the catalyst (hardener). Epoxy resin can be used to join a wide range of dissimilar materials, but works best on a slightly rough surface. It is expensive but very strong. Epoxy resin adhesive
© Boardworks Ltd 200511 of 19 Surfaces must be in contact before the adhesive is applied. Reacts with the surface of the acrylic. Needs a large gluing area to work effectively. Tensol cement is used solely for joining acrylic. It is a solvent-based adhesive which dissolves the surfaces being joined. Caution! Tensol is harmful if used incorrectly. It evaporates quickly and must be used in a well ventilated area because of fumes. Tensol cement
© Boardworks Ltd 200512 of 19 Dichloromethane adhesive for plastics
© Boardworks Ltd 200513 of 19 quick convenient messy useful for modelling – its quality is too poor for production work. Hot melt glue is: Caution! Care needs to be taken with the hot glue – it can burn! Hot glue
© Boardworks Ltd 200514 of 19 A very simple adhesive is double sided tape. quick to use easy to use inexpensive. It is: Double sided tape is widely used in the construction and assembly of road signs. It is ideal for joining clean, large, flat surfaces. Double sided tape
© Boardworks Ltd 200515 of 19 The adhesive used in post-it notes does not damage books or other surfaces it is attached to. The note is held securely in place until you want to remove/reposition it. An unusual technological problem was to find an application for an adhesive that was just not very sticky. The solution? Post-it notes! Non-sticky adhesives
© Boardworks Ltd 200516 of 19 Adhesives work by adhering (sticking) to the surfaces being joined. Some materials have surfaces that are difficult for adhesives to stick to. Polythene and polypropylene are difficult to glue. Nylon cannot easily be glued so nuts, bolts, screws or rivets are usually used instead. Because its surface is not sticky, nylon is used as a bearing material. Difficult to join materials
© Boardworks Ltd 200517 of 19 If you are using adhesives, be aware of the possibility of fumes. Wipe up any spillages. Some adhesives are skin irritants, so wear gloves when working with them. Reading the instructions on the tins is a useful starting point for finding out about each adhesive. All adhesives need to be stored and used appropriately. COSHH regulations cover the storage and use of these substances. Health and safety
© Boardworks Ltd 200518 of 19 Adhesives game
© Boardworks Ltd 200519 of 19 Key points © Boardworks Ltd 200519 of 19 Key points Adhesives are used to permanently join materials. PVA and cascamite are used to join wood. Contact adhesives and epoxy resins can be used to glue dissimilar materials. Tensol cement is used for joining acrylic. When using adhesives be sure to follow the storage and usage instructions.
Adhesives And Their Uses. PVA adhesive PVA Adhesive (Polyvinyl Acetate) is a water based adhesive that is white and creamy in appearance. It used for.
Specification section 3.4. What do you need to learn? The advantages and disadvantages of each adhesive What materials each adhesive is suitable for.
Before we use plastics we need to think about the following processes : Line bending Vacuum forming Joining plastics – permanent Joining plastic – non.
Joining Techniques To understand which adhesive(s) is the most suitable for joining like and unlike materials To understand the advantages and disadvantages.
Adhesives. 1 Which of these adhesives will glue mdf to acrylic? 1. PVA 2. Epoxy resin (araldite) 3. Tensol cement 4. Pritt Stick.
© Learning and Teaching Scotland 2006 Soldering Soldering makes a permanent joint between two pieces of metal. It can be used on most metals but not aluminium.
Woods joints are often glued to make them permanent. The strength of the joint depends on the marking out and cutting (accuracy)
Joining methods, including PVA adhesive, spray adhesive, solvent cement, hot melt glue (glue gun), epoxy resin, glue sticks, single and double-sided adhesive.
ADHESIVES. TWO MAIN INGREDIENTS – RESIN – GLUE SOLID SOLVENT – KEEPS LIQUIFIED UNTIL APPLIED.
© Boardworks Ltd of 23 Resistant Materials Components These icons indicate that teacher’s notes or useful web addresses are available in the Notes.
Adhesives Quiz Cascamite PVA Epoxy Resin Tensol Cement 1.Which type of adhesive would be best suited for gluing together these parts of a wooden Coffee.
Glues and Gluing Introduction to Woods Technology.
Classification and Selection of Materials and Components.
Permanent Joining Nails: come in different shapes and sizes. Nails are much cheaper than screws and quick to put in. You do not need to drill holes in.
Adhesives Recap on different adhesives and where to use them. J.Byrne 2014.
Joining Materials Theory. Knowledge and Understanding.
© Boardworks Ltd of 21 Resistant Materials Tools and Techniques These icons indicate that teacher’s notes or useful web addresses are available in.
© Boardworks Ltd of 22 Resistant Materials Health and Safety These icons indicate that teacher’s notes or useful web addresses are available in the.
Adhesives Wood Manufacturing & Finishing J.Byrne
1 Joining materials Wood, Metal and Plastics BADI Year 1 John Errington MSc.
Gluing and Clamping. Gluing There are many different types of adhesives for many different types of jobs. Glues can be used to bond wood to wood, wood.
Choose a material WoodPlasticMetal Press this symbol at any point to return to the menu page.
© Boardworks Ltd of 20 Graphic Products Materials These icons indicate that teacher’s notes or useful web addresses are available in the Notes Page.
CASE 12 RESIN IN THE MARINE INDUSTRY. 3 MAIN RESIN TYPES Polyester Polyester Resin consists of two principal types used as standard in Laminating systems,
Creating Fiberglass Components Using the Lost-Foam Method.
Introduction to Soldering The Basics. Learning Objectives To know how to use a soldering iron to achieve perfect soldered joints; To understand and put.
Adhesives See if you can answer the following questions on adhesives. The answers are on following pages. 1J.Byrne 2013.
Joining Metals. Non Permanent Joining A Bolt is a threaded fastener that passes through the work piece and is held in place by a nut on the other side.
© Boardworks Ltd of 22 Resistant Materials Woods These icons indicate that teacher’s notes or useful web addresses are available in the Notes Page.
. How do artists choose the material they will use for their sculpture? How does a sculptor achieve a permanent artwork in materials such as bronze,
© Boardworks Ltd of 9 Graphic Products Graphic Media These icons indicate that teacher’s notes or useful web addresses are available in the Notes.
Advantages of Plastic Light weight Resistant to corrosion Low thermal conductivity Can be translucent, transparent and opaque Electrically resistant Easily.
© Boardworks Ltd of 13 Preparing and Processing Food These icons indicate that detailed teacher’s notes or useful web addresses are available in.
Practical Application of Intermolecular Forces A Study of Adhesives.
UNIT: Oxy-Acetylene; Welding, Brazing, Cutting and Heating Lesson: Oxy-Acetylene Brazing Standard B7.5 - Know basic repair skills using a variety of techniques,
Gluing The term gluing means to assemble parts with a glue or adhesive.
Muoviteknologia Teppo Vienamo Joints / attachments Principles of joining plastics parts Mechanical joints / attachments Adhesives Welding.
© Boardworks Ltd of 16 These icons indicate that teachers notes or useful web addresses are available in the Notes Page. This icon indicates that.
Working with Acrylic Quiz Garden Furniture Baths Cooking Pots 1.Sheet Acrylic is often used to make?… Kitchen Worktops Tea Cups Fire Surrounds.
© Boardworks Ltd of 17 © Boardworks Ltd of 17 Food Technology Hygiene These icons indicate that teacher’s notes or useful web addresses are.
Chapter 1, Section 5. We will leave page 10 blank. This is where the vocabulary belongs. Once we complete our lab safety instruction manual project,
Wood Joints, glues and clamping pages , , and joint handouts TED 126.
© Boardworks Ltd of 15 These icons indicate that teacher’s notes or useful web addresses are available in the Notes Page. This icon indicates the.
How to Re-Fletch an Arrow By: James Chilton. Table of Contents 1.Title Page 2.Table of Contents 3.Warning and Chemical information 4.Supplies 5.History.
© Boardworks Ltd of 6 Resistant Materials Woods These icons indicate that teacher’s notes or useful web addresses are available in the Notes Page.
Wood Finishing Wood Finishing. Finishing Safety When in lab, wear your safety glasses. When in lab, wear your safety glasses. Wear Proper clothing. Wear.
LAB SAFETY. (1) Food or Drink Never eat or drink in the laboratory. Do not bring food or drink into the lab. Accidentally ingesting chemicals can cause.
STIFFENING AGENTS i. Starch Starch is used in laundry work to stiffen cotton and linen fabrics. It gives the fabrics a smooth surface and fresh look a.
© Boardworks Ltd of 15 These icons indicate that teachers notes or useful web addresses are available in the Notes Page. This icon indicates the.
Working With Acrylic 1. Acrylic Uses 3. Drilling Acrylic 4. Finishing Acrylic 5. Bending Acrylic 6. Forming Acrylic 7. Gluing Acrylic 2. Cutting Acrylic.
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