Distemper is a type of water-based paint consisting of whiting, pigments, and a binder like glue or casein. It provides a washable or non-washable surface depending on the binder. Distemper is cheaper and easier to work with than paints and varnishes. There are two main types - soft distemper which uses animal glue as a binder, and hard distemper which uses a stronger binder like casein or linseed oil. Applying distemper involves preparing the surface, applying a primer coat, and then multiple coats of distemper. Varnish is a resin dissolved in solvents like alcohol, oil or turpentine which is applied to
paints, composition of paints, properties of paints and classification of paints : On the basis of application area,On the basis of the paint surface,On the basis of paint solvent,On the basis of finish,On the basis of function.What to Consider When Choosing a Paint Finish. Defects in paints. Building finishes
paints, types of paint, classification of paints, uses of paints, composition of paints, manufacturing procedure of paints, advantages and disadvantages of different types of paint
Paint is any pigmented liquid, liquifiable, or mastic composition that, after application to a substrate in a thin layer, converts to a solid film. it is most commonly used to protect, color, or provide texture to objects.
paints, composition of paints, properties of paints and classification of paints : On the basis of application area,On the basis of the paint surface,On the basis of paint solvent,On the basis of finish,On the basis of function.What to Consider When Choosing a Paint Finish. Defects in paints. Building finishes
paints, types of paint, classification of paints, uses of paints, composition of paints, manufacturing procedure of paints, advantages and disadvantages of different types of paint
Paint is any pigmented liquid, liquifiable, or mastic composition that, after application to a substrate in a thin layer, converts to a solid film. it is most commonly used to protect, color, or provide texture to objects.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
1. Distemper may be defined as water
paints consisting of:
• whiting (powdered chalk),
• colouring pigment (if desired)
• A Binder Such as Glue or Casein
mixed in water.
Distemper may give either a
washable or nonwashable surface
according to the medium
used.
They are cheaper than paints and
varnishes and are easier to work.
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
2. • Soft Distemper is not abrasion
resistant and may include
binders such as chalk, ground
pigments, and animal glue.
An animal glue is an adhesive
that is created by prolonged
boiling of animal connective
tissue. These protein colloid
glues are formed through
hydrolysis of the collagen from
skins, bones, tendons, and other
tissues, similar to gelatin.
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
3. • Hard Distemper is stronger and
wear-resistant and can include
casein or linseed oil as binders
Casein glue is a type of adhesive
made from milk protein. The glue
is known to be very strong over a
long period of time and is
resistant to water. It has a longer
drying time (clamp your piece of
work for 2 – 4 hours). There have
been many uses for casein glue
throughout history.
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
4. Distempering a surface
involves following operations :
(i) Preparation of the surface
(ii) Applying prime coat
(iii) Distempering
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
5. Preparation of the Surface:
• Surface to be distempered should be
absolutely dry.
• Dampness in the surface spoils the
distemper coat. Holes, patches,
cracks, efflorescence spots etc.
should be thoroughly cleaned and
filled with gypsum or lime putty.
• If the surface is to be redistempered
the old coating should be washed
with water and allowed to dry
completely.
• The surface in the last should be
thoroughly rubbed with sand paper
and cleaned.
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
6. Applying Prime Coat:
• After preparation of the surface, it should be
primed by applying a coat of whiting in water
or only of milk. Priming coat helps in
developing a good bond of distemper with the
surface.
• The priming coat should be allowed to dry
completely, before distemper coat is applied
over it.
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
7. Distempering :
• After having applied the priming
coat, first coat of distemper is
applied on the surface. The first
coat should be of a light tint and
applied with great care. Second
coat is applied after the first coat
has dried and become hard.
• Distempering coats are
applied with the help of broad
stiff distemper brushes. Now-
a-days, distempers can be
applied with the help of spray
pistols also.
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
8. Properties of Distempers :
1. Distempers generally shrink on drying. Hence, if
the surface receiving distemper is weak, it may
lead to cracking and flaking of the distempers.
2. Distempers are available in powder form and
also in paste form.
3. Powdered distempers are known as dry
distempers, whereas paste form distempers
are known as oil bound distempers. Oil bound
distempers are superior than dry distempers.
4. Coatings of distempers are comparatively thick
and are more brittle than other water paints.
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
9. • Distemper film is generally porous in
nature and it allows water vapour to pass
through it. Hence it allows new walls to
dry out without damaging the distemper
film.
• They are less durable than oil paints.
• Distempers are generally light in colour
and provide a good reflective coating.
• They can be applied on cement plastered
surface, lime plastered surface, brick
work, insulating boards, etc
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
10. VARNISHES :-
• Varnish is a solution of some
resinous substance in
alcohol, oil or turpentine.
The process of covering the
surface with varnish is
known as varnishing.
• Varnishing is done only on
wooden surface.
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
11. Constituents of the Varnish:
A varnish has usually three elements :
(i) Resins or resinous material
(ii) Driers
(iii) Solvents
Resins or Resinous Material:
Quality of varnish depends much upon
the quality of resin used.
Copal
Lac, Shellac
Amber, Gum Dummer
Rosin are the commonly used resins
for varnishes.
Copal is considered to be best.
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
12. Driers:
Driers are used to accelerate the
process of drying of the varnish.
Litharge
lead acetate
White copper
litharge is mostly used.
Solvents:
They are used in varnish to make it
thin and helps the varnish to spread
out Uniformly in large area.
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
13. Functions of Varnish:
Varnish performs the following functions
:
(i)It brings about brilliance to the
painted surface.
(ii)It protects the surface against
adverse effects of the atmosphere.
(iii)It increases the durability of the
paint film.
(iv)It beautifies the surface without
hiding the beautiful grains of the
wood.
Varnish plays an important part in
finishing wooden surfaces of doors,
windows, floors, furniture, etc.
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
14. Properties of Good
Varnish : A good varnish should
possess the following properties :
(i)It should not hide the natural grains of
the surface.
(ii)It should not shrink or show cracks after
drying.
(iii) It should make the surface glossy.
(iv) It should dry rapidly.
(v) It should impart the finished surface
uniform colour and pleasing appearance.
(vi)The thin film of varnish developed
after drying on the surface should be
tough, hard and durable.
(vii)The natural colour of the varnish
should not fade away when varnished
surface is exposed to atmospheric action
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
15. Types of Varnish:
The varnishes can be classified into
following categories depending upon
the solvent used :
(i) Oil Varnish
(ii) Spirit Varnish
(iii) Turpentine Varnish
(iv) Water Varnish
(v) Asphalt Varnish
(vi) Spar Varnish
(vii) Flat Varnish
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
16. Oil Varnish:
• This type of varnish is
manufactured by dissolving hard
resins such as amber and copal in
linseed oil.
• Turpentine may be used in small
quantity to thin the varnish, and
also to render it workable.
• Oil varnishes form a hard and
durable film, but they dry slowly.
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
17. Spirit Varnish:
• This type of varnish is prepared by
dissolving resins such as lac or
shellac in methylated spirit.
• This varnish dries very quickly and
gets easily affected by weather
action.
• This varnish is mostly used for wood
furniture.
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
18. Turpentine Varnish:
• In this type of varnish, Gum Dammar,
Mastic, and Rosin like resins are
dissolved in Turpentine Oil.
• These varnishes are light in colour.
• They dry quickly.
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
19. Water Varnish
• This varnish is prepared by dissolving
Shellac in hot water.
• Shellac does not dissolve readily in
water and as such to accelerate the
process of dissolving shellac in water
either ammonia or potash, or soda or
borax is added.
• This varnish is used for painting
pictures, posters and maps.
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
20. Asphalt Varnish:
• This varnish is obtained by dissolving melted
asphalt in linseed oil.
• The varnish may be thinned by adding
suitable amount of either turpentine or
petroleum spirit.
• This varnish is used for varnishing fabricated
iron and steel product.
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
21. Spar Varnish:
• This varnish derives its name from
its use. It is mostly used on spars
and other exposed parts of the
ships.
• It is very good weather resistant. It
should not be used indoor.
• Spar- a thick, strong pole such as is
used for a mast or yard on a ship
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
22. Flat Varnish:
• This is an ordinary varnish to which
material such as wax, finely divided
silica and metallic soaps are added, to
reduce the gloss of the varnished
surface.
• This varnish presents a dull appearance.
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
23. Process of Varnishing:
Following operations are required to be carried
out while varnishing a wooden surface :
• Preparation of Surface:-
The surface to be varnished should be thoroughly
rubbed smooth by means of sand paper and
thoroughly cleaned from dust and dirt.
• Knotting:-
It is the process by which knots on the surface of
wood work are killed by applying certain
substance over the knots. All the knots should be
covered with a hot preparation of red lead or glue
size.
Prepare by:- Manoj Paridwal
Civil Department (Bundi)
24. • Stopping :-
After knotting, the surface of wood work is
stopped by means of hot weak glue size.
This coat fills all the pores of the surface.
After stopping when surface becomes dry, it
is rubbed again with sand paper.
• Applying Varnish Coats:-
After stopping process, varnish is applied on
the surface in very thin coats.Next coat is
applied only when previously applied coat
has dried. For varnishing, fine brittle
varnishing brush should be used.
Prepare by:- Manoj Paridwal
Civil Department (Bundi)