what are thermoplastic adhesives, types, properties, uses, its explanation with examples, use in the construction industry, applications, includes a market survey.

1. SUBMITTED BY:
MAHIKA AGARWAL
B.ARCH, 3rd SEM
THERMOPLASTIC ADHESIVES:

2. INTRODUCTION:
 Thermoplastic adhesives are
plastic materials.
 The constituents of these
adhesives are polymers that melt
above a specific characteristic
temperature and solidify upon
cooling.
 The thermoplastic adhesive family
also belongs to the hot-melt
adhesives (HMAs).
 Thermoplastic adhesives can be
applied as a molten liquid to
encapsulate the fabric and then
harden by cooling.
 These heat-activated adhesives
generate joint strength almost
instantly after cooling.

3.  Thermoplastic adhesives do not
require a curing period. Instead,
once the adhesive has been
applied, it either cools (e.g., in the
case of hot melt adhesives) or
dries (e.g., in the case of glue) to
form an adhesive bond between
substrates.
 As thermoplastic materials do not
require a curing period, they do
not undergo a physical or
chemical change upon the
application of heat.
 Therefore, they can be remelted
and recycled for future attachment
applications.

4.  Some of the compounds from which
thermoplastic adhesives are made include
cellulose derivatives, polyacrylates,
polyethers, polysulfones, saturated
polyesters, and vinyl polymers and
copolymers.

5. EXAMPLE:
 A good example of thermoplastic adhesive is
hot glue used for crafts.
 The heat allows the chains to slide around
much easier, and importantly, allow it to wet
the materials that are being joined.
 Then once the adhesive cools, the chains
grab onto each other again and the adhesive
hardens, preventing the bonded materials
from separating.

6. PROPERTIES:
 These adhesives hardens on cooling and
soften when heated.
 They are fusible, soluble and poor heat and
creep resistant.
 They have low/medium shear strengths and
suffer from creep at high loadings.
 These are used for low/medium load
assemblies.
 They have good resistance to oil and poor
resistance to water.
 They are resistant to fungal attack and posses
non-staining qualities.

7.  Thermoplastic adhesives become deformable
or flexible at relatively high temperature and
melts when it is heated.
 It hardens into a vitreous transition state
when it cools sufficiently (gluing).
 These are generally polymers with a high
molecular weight , which have strong
molecular bonds.
 After initial cooling and solidification , it can
be heated and melted again, although its
physical properties gradually change if it is
melted several times.

8. USES:
 Used for woodwork glue.
 Used for joining metals and plastics.
 For fixing plastic laminates to wooden
base.
 Used in packaging industry.
 Profile wrapping, product assembly.
 Laminating applications in wood work
industry.
 Also many electronic manufacturers
use them to affix parts and wires, to
secure, insulate and protect the
device’s components.
 Fabrication of furniture.

9. TYPES:
 Cellulose acetate.
 Cellulose acetate butyrate.
 Cellulose nitrate.
 Polyvinyl acetate.
 Polyamide.
 Acrylic.

10. CELLULOSE ACETATE AND
CELLULOSE ACETATE BUTYRATE:
 Cellulose acetate and cellulose
acetate butyrate are water clear
and more heat resistant, but less
water resistant, than cellulose
nitrate.
 Cellulose acetate butyrate has
better heat and water resistance
than cellulose acetate and is
compatible with a wide range of
plasticizer.

11. CELLULOSE NITRATE:
 Cellulose nitrate is used as a raw
material for solvent adhesives.
 Cellulose nitrate mixed with alcohol
is well known as collodion.
 The adhesive film developed by
cellulose nitrate is resistant to water
but affected by strong acids and
alkalies and aging.
 It is inflammable and in recent years it
is replaced by others.
Uses:
 As multipurpose adhesive, shoe
adhesive.

12. POLYAMIDES:
 Polyamides are able to create a strong bond
between several different types of
substrates, including paper, wood and metal
as well as plastics like treated polypropylene
and polyethylene, ABS and vinyl.
 Some types of polyamides can even adhere
PVC, which can be difficult to bond reliably.
 In many applications, polyamide hot melts
offer an ideal blend of strength, flexibility,
resistance to oils and chemicals and ease of
use.
USES:
 Used in wood working, furniture building and
electrical.

13. ACRYLIC:
 An acrylic adhesive is a resin-based
adhesive comprised of acrylic or
methylacrylic polymers.
 They are extremely strong and
efficient in bonding multiple objects
together and are very environmentally
resistant.
 Because of this environmental
resistance, acrylic adhesives are
often the preferred adhesive in the
construction industry.
 In window mount bonding and
sealing, sign making etc.
USES:

14. THERMOPLASTIC ADHESIVE :
POLYVINYL ACETATE (PVA):
 As an emulsion in water, PVA is
sold as an adhesive for porous
materials , particularly wood ,
paper and cloth .
 It is the most commonly used
wood glue, both as the “white
glue”, and the yellow “carpenters
glue”.
 It is available in liquid form.
 Its curing time is 20 minutes
along with pressure.it can be
stored in cool areas, freezing
should be avoided.

15. HOW PVA’s ARE USED?
 For onsite applications, squeeze bottles, paint
rollers, or stiff bristle brushes offer
convenient means of application.
 Some formulations are also adaptable to
spraying.
ADVANTAGES :
 Ready to use or requiring only limited mixing.
 Can be easily applied.
 Set rapidly at room temperature.
 Cure to a colourless bondline.

16. DISADVANTAGES:
 They tend to creep in stressed joints.
 Are even more subject to deformation at
temperature above 49 deg celsius sor sustained
periods.
 Possess only fair water and moisture resistance.
USES:
 As wood glue.
 As paper adhesive during paper packaging
conversion.
 In bookbinding and book arts, due to its flexible
strong bond and non acidic nature.

17.  In handicrafts.
 As wallpaper adhesive.
 As a primer for drywall and other substrates.
 As envelope adhesive.

18. ADVANTAGES:
 Vibration and noise damping.
 Insensitivity to corrosive environment
 Direct and indirect reduction in joint weight.
 Higher chemical resistance against acids,
bases, and alcohols, good resistance to
moisture
 Electrical insulation
 Chip resistance
 Aesthetically-superior finishes
 Superb corrosion resistance

19. DISADVANTAGES:
 They exhibit lower heat (i.e., lower operative
maximum temperature) and strength
resistance.
 May soften when reheated.
 Can be more expensive than thermoset.
 It tend to form weaker adhesive bond.
 Limited service temperature performance.

20. PERFORMANCE OF
THERMOPLASTIC ADHESIVES:
 The performance is consistent and
reproducible than thermosets for fundamental
reasons.
 Thermoplastic, fully polymerized by
manufacturer under highly controlled
conditions of temperature, pressure , reaction
rate and time.
 Thermoplastic adhesives can be bonded in a
dry state which significantly reduces the
possibility of voids so often experienced with
epoxies and polyimide thermosets.

21. MARKET SURVEY:
 Polyfix Cyanoacrylate
Glue Instant Bond:
Price : ₹ 5/ Piece
 Brand – Polyfix
 Packaging Size - 0.500Mg
 Grade Standard - Industrial
Grade,Cyanoacrylate Glue
 Features - Impact Resistant,Instant
Curing
 Surface of Application - Household
Product, Helmet, Metal
 Minimum Order Quantity - 50 Piece
 Supplier - Benson Polymers Ltd.

22.  Hardybond PVC
WPC Adhesive:
• Price - ₹ 85/ Unit
• Brand – HARDYBOND
• Packaging Size - 20 ml
• Packaging Type – Pack
• Application Industry - Construction, WPC
FURNITURE
• Surface Of Application – Plastic
• Form – Liquid
• Grade Standard – Chemical
• Strength – High
• Country of Origin - Made in India
• Minimum Order Quantity - 100 Unit
• Supplier - Hardy Smith Designs Private Limited

23. Superfix PVC Solvent Cement -
10 ml-5000 ml:
Brand Superfix
Grade Standard Industrial Grade
Packing Type Plastic Bottle
Form Liquid
Packaging Size 500 ml and 250 ml
Usage
Prize
Supplier
Industrial
₹ 6.5 / piece
Innomax industries, new
delhi.

24. 1000mL PVC Solvent Cement:
₹ 115/ Piece :
Brand Aster Bond
Grade Standard Industrial Grade
Packaging Size 1000 ml
Packaging Type Tin
Form Liquid
Surface Of Application Plastic
Shelf Life 2 Year
Minimum Order
Quantity
Supplier
60 Piece
Sahjanand industries,
Ahmedabad

25. Super m 250 ml Heavy Duty PVC Pipe
Solvent Adhesive, Tin Can:
₹ 44/ Can :
Surface Of Application PVC
Brand Super m
Packaging Size 250 ml
Packaging Type Tin Can
Form Liquid
Shelf Life 2 Years
Country of Origin
Supplier
Made in India
Akhar industries, ahmedabad

26. Ethyl-cyanoacrylate Super Bond
Instant Glue for Plastic,
₹ 10/ Piece:
Packaging Size 10 ml to 100 ml
Material Ethyl-cyanoacrylate
Grade Standard Chemical Grade, Industrial
Grade
Usage/Application Plastic
Packaging Type Bottle
Form Liquid
Color Transparent
Fixture Time 1/2 sec
Minimum Order
Quantity
500 Piece

27. THANK YOU…