Detailed Project Report on unsaturated polyester resin (20 mt per day output)

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UNSATURATED POLYESTER RESIN

(20 MT PER DAY OUTPUT)

[CODE NO.4066]

Polyester resins are unsaturated synthetic resins formed by the reaction of dibasic organic acids and polyhydric alcohols. Maleic Anhydride is a commonly used raw material with diacid functionality. Polyester resins are used in sheet moulding compound, bulk moulding compound and the toner of laser printers. Wall panels fabricated from polyester resins reinforced with fiberglass so-called fiberglass reinforced plastic (FRP) are typically used in restaurants, kitchens, restrooms and other areas that require washable low-maintenance walls. They are also used extensively in Cured-in-place pipe applications. Departments of Transportation in the USA also specify them for use as overlays on roads and bridges. In this application they are known as PCO Polyester Concrete Overlays. These are usually based on isophthalic acid and cut with styrene at high levels usually up to 50%.

Unsaturated polyesters are condensation polymers formed by the reaction of polyols (also known as polyhydric alcohols), organic compounds with multiple alcohol or hydroxy functional groups, with saturated or unsaturated dibasic acids. Typical polyols used are glycols such as ethylene glycol; acids used are phthalic acid, isophthalic acid and maleic acid. Water, a by-product of esterification reactions, is continuously removed, driving the reaction to completion. The use of unsaturated polyesters and additives such as styrene lowers the viscosity of the resin. The initially liquid resin is converted to a solid by cross-linking chains. This is done by creating free radicals at unsaturated bonds, which propagate in a chain reaction to other unsaturated bonds in adjacent molecules, linking them in the process. The initial free radicals are induced by adding a compound that easily decomposes into free radicals. This compound is usually and incorrectly known as the catalyst. Initiator is the more correct term. Substances used are generally organic peroxides such as benzoyl peroxide or methyl ethyl ketone peroxide.

Polyester resins are thermosetting and, as with other resins, cure exothermically. The use of excessive initiator especially with a catalyst present can, therefore, cause charring or even ignition during the curing process. Excessive catalyst may also cause the product to fracture or form a rubbery material.

Polyester resins are the most widely used resin systems, particularly in the marine industry. By far the majority of dinghies, yachts and workboats built in composites make use of this resin system.

Polyester resins such as these are of the 'unsaturated' type. Unsaturated polyester resin is a thermoset, capable of being cured from a liquid or solid state when subject to the right conditions. It is usual to refer to unsaturated polyester resins as 'polyester resins', or simply as 'polyesters'. There is a whole range of polyesters made from different acids, glycols and monomers, all having varying properties.

There are two principle types of polyester resin used as standard laminating systems in the composites industry. Orthophthalic polyester resin is the standard economic resin used by many people. Isophthalic polyester resin is now becoming the preferred material in industries such as marine where its superior water resistance is desirable.

The figure below shows the idealized chemical structure of typical polyester. Note the positions of the ester groups (CO - O - C) and the reactive sites (C* = C*) within the molecular chain.

Most polyester resins are viscous, pale coloured liquids consisting of a solution of polyester in a monomer which is usually styrene. The addition of styrene in amounts of up to 50% helps to make the resin easier to handle by reducing its viscosity. The styrene also performs the vital function of enabling the resin to cure from a liquid to a solid by 'cross-linking' the molecular chains of the polyester, without the evolution of any by-products. These resins can therefore be moulded without the use of pressure and are called 'contact' or 'low pressure' resins. Polyester resins have a limited storage life as they will set or 'gel' on their own over a long period of time. Often small quantities of inhibitor are added during the resin manufacture to slow this gelling action.

For use in moulding, a polyester resin requires the addition of several ancillary products. These products are generally:

• Catalyst

• Accelerator

• Additives: Thixotropic; Pigment; Filler; Chemical/fire resistance

A manufacturer may supply the resin in its basic form or with any of the above additives already included. Resins can be formulated to the moulder's requirements ready simply for the addition of the catalyst prior to moulding. As has been mentioned, given enough time an unsaturated polyester resin will set by itself. This rate of polymerisation is too slow for practical purposes and therefore catalysts and accelerators are used to achieve the polymerisation of the resin within a practical time period. Catalysts are added to the resin system shortly before use to initiate the polymerisation reaction. The catalyst does not take part in the chemical reaction but simply activates the process. An accelerator is added to the catalysed resin to enable the reaction to proceed at workshop temperature and/or at a greater rate. Since accelerators have little influence on the resin in the absence of a catalyst they are sometimes added to the resin by the polyester manufacturer to create a 'pre-accelerated' resin.

The molecular chains of the polyester can be represented as follows, where 'B' indicates the reactive sites in the molecule.

With the addition of styrene 'S ', and in the presence of a catalyst, the styrene cross-links the polymer chains at each of the reactive sites to form a highly complex three-dimensional network as follows:

The polyester resin is then said to be 'cured'. It is now a chemically resistant (and usually) hard solid. The cross-linking or curing process is called 'polymerization'. It is a non-reversible chemical reaction. The 'side-by-side' nature of this cross-linking of the molecular chains tends to means that polyester laminates suffer from brittleness when shock loadings are applied.

COST ESTIMATION

Plant Capacity 20 MT/Day

Land & Building (4000 sq.mt.) Rs. 16.21 Cr

Plant & Machinery Rs. 1.41 Cr

Working Capital for 1 Month Rs. 4.55 Cr

Total Capital Investment Rs. 22.36 Cr

Rate of Return 24%

Break Even Point 47%

INTRODUCTION

RAW MATERIAL

COMPONENTS OF POLYESTER RESINS

TYPES OF POLYESTER RESINS

SATURATED POLYESTER RESIN

UNSATURATED POLYESTER RESIN

FIRE RESISTANT POLYESTER RESIN

ELECTRICAL RESISTANT POLYESTER RESIN

LOW STYRENE EMISSION POLYESTER RESIN

ISOPHTHALIC POLYESTER RESINS FOR FIBERGLASS FABRICATIONS

THE DIFFERENT POLYESTER RESINS

CHARACTERISTICS AND BENEFITS OF POLYESTER RESIN

PERFORMANCE CHARACTERISTICS

SUGGESTED USE

RECOMENDED CATALYST

TYPICAL LIQUID RESIN PROPERTIES

TYPICAL CAST UNFILLED RESIN PROPERTIES

ADVANTAGE OF POLYESTER RESIN

POLYESTER RESIN OFFERS THE FOLLOWING ADVANTAGES:

PROPERTIES OF ISOPHTHALIC POLYESTER RESIN AND ORTHOPHTHALIC POLYESTER RESIN

PROPERTIES AND USES

A. FORMULATION DEPENDENT PROPERTIES

B. REACTION DEPENDENT PROPERTIES

CHARACTERISTIC OF JET UNDER THE CONDITIONS OF CURE: CURED

RESIN PROPERTIES:

PHYSICAL PROPERTIES OF CURED RESIN:

ELECTRICAL PROPERTIES OF CURED RESIN:

B.I.S. SPECIFICATIONS

MARKET OVERVIEW OF UNSATURATED POLYESTER RESIN

WORLD CONSUMPTION OF UNSATURATED POLYESTER RESINS - 2018

GLOBAL UNSATURATED POLYESTER RESIN MARKET SHARE,

BY END USE, 2019 (%)

GLOBAL UNSATURATED POLYESTER RESINS: MARKET TAXONOMY

BY PRODUCT TYPE

BY END-USER INDUSTRY

CONSUMPTION OF UNSATURATED POLYESTER RESIN

TOP FIVE EXPORT DESTINATIONS OF UNSATURATED POLYESTER RESIN

UNSATURATED POLYESTER RESIN

MANUFACTURING PROCESS OF UNSATURATED POLYESTER RESIN

REACTION

PROCESS FLOW DIAGRAM

MANUFACTURING PROCESS OF UNSATURATED POLYESTER RESIN

(USING POLYETHYLENE TEREPHTHALATE AS MAIN RAW MATERIAL)

PROCESS FLOW DIAGRAM

PROCESS IN DETAILS

PROCESS DETAILS

BLENDING OPERATION:

PACKAGING:

CHEMISTRY OF UNSATURATED POLYESTER RESIN

TECHNICAL DETAILS OF UNSATURATED POLYESTER RESIN MANUFACTURE

REACTION MECHANISM

THE CURING OF UNSATURATED POLYESTER RESINS

MONOMERS

THE POLYMERISATION PROCESS

FIG.: STRUCTURE OF METHYL ETHYL KETONE PEROXIDE

SYNTHESIS OF ISOPHTHALATE UPR

FORMULATION OF ISOPHTHALATE UPR

POLYESTER RESIN (FOR REINFORCED PLASTICS) G. P. GRADE

FORMULATION:-

PROPERTIES OF (REINFORCED GRADE POLYESTER RESIN)

POLYESTER RESIN (LAMINATE GRADE):-

FORMULATION - 1

PROCESS OF MANUFACTURING OF POLYESTER RESIN (LAMINATE GRADE)

POLYESTER VARNISH PREPARATION:-

MANUFACTURING PROCESS OF POLYESTER RESIN (ELECTRICAL GRADE)

POLYESTER G:-

POLYESTER VARISH:-

UNSATURATED POLYESTER RESINS

RAW MATERIALS

USING PHTHALIC ANHYDRIDE AS A MAIN RAW MATERIAL

USING POLYETHYLENE TEREPHTHALATE AS A MAIN RAW MATERIAL

TECHNICAL DATA SHEET OF ORTHOPHTHALIC POLYESTER RESIN

PHYSICAL PROPERTIES:

APPLICATION:

PACKING AND SHELF-LIFE:

SUPPLIERS OF PLANT AND MACHINERIES (GLOBAL)

SUPPLIERS OF RAW MATERIALS (GLOBAL)

SUPPLIERS OF COMPLETE PLANT AND EQUIPMENTS FOR UNSATURATED

POLYESTER RESINS

SUPPLIERS OF REACTORS

SUPPLIERS OF MIXERS

SUPPLIERS OF STORAGE TANK/ REACTION VESSELS

SUPPLIERS OF BOILER

SUPPLIERS OF LABORATORY EQUIPMENTS/LABORATORY TESTING

EQUIPMENTS

SUPPLIERS OF RAW MATERIALS

SUPPLIERS OF POLYPROPYLENE GLYCOL

SUPPLIERS OF PHTHALIC ANHYDRIDE

SUPPLIERS OF MALEIC ANHYDRIDE

SUPPLIERS OF POLYETHYLENE GLYCOL

SUPPLIERS OF STYRENE MONOMER

SUPPLIERS OF ANTIFOAMING AGENTS

SUPPLIERS OF STABILIZERS

PLANT LAYOUT

APPENDIX – A:

01. PLANT ECONOMICS

02. LAND & BUILDING

03. PLANT AND MACHINERY

04. OTHER FIXED ASSESTS

05. FIXED CAPITAL

06. RAW MATERIAL

07. SALARY AND WAGES

08. UTILITIES AND OVERHEADS

09. TOTAL WORKING CAPITAL

10. TOTAL CAPITAL INVESTMENT

11. COST OF PRODUCTION

12. TURN OVER/ANNUM

13. BREAK EVEN POINT

14. RESOURCES FOR FINANCE

15. INSTALMENT PAYABLE IN 5 YEARS

16. DEPRECIATION CHART FOR 5 YEARS

17. PROFIT ANALYSIS FOR 5 YEARS

18. PROJECTED BALANCE SHEET FOR (5 YEARS)

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