Crystic® Polyester Resin 124PA

Identification & Functionality

Chemical Family

Orthophthalics,

Polyesters,

Unsaturated Polyester (UPE)

Polymer Name

Polyester (unspecified)

Composite Materials Functions

Resins, Binders & Matrix Materials,

Surface Finish

Technologies

Composite Materials

Product Families

Composite Materials — Surface Finishes

Gelcoats & Topcoats

Features & Benefits

Materials Features

Excellent Wetting Behaviour,

Medium Viscosity,

Thixotropic,

Water Resistant

Applications & Uses

Markets

Automotive & Transportation,

Consumer Goods

Applications

Consumer Goods — Housewares

Automotive & Transportation — Transportation

Marine

Composites End Use

FRP Boats,

Shower Trays,

Tanks,

Tubs

Formulation Guidelines

Parts by Weight	Formulation
Crystic 124PA	100
Catalyst M or MEKP M-50	1 - 2.5

Curing should not be carried out at temperature below 150C and the resin must be allowed to attain workshop temperature before being formulated for use. These resins require the addition of catalyst only to start the curing reaction. The catalyst must be thoroughly stirred in the resin.

Gel Time:
The amount of catalyst and the ambient temperature control the gel time of the resin formulation. The following table shows the gel time of 100 pbw Crystic 123 or 124 containing various levels of Catalyst M.

Parts of Catalyst to 100 parts of catalyzed resins	1	1.5	2
Gel time in minutes at 25°C	37.5	23.25	16.5
Gel time in minutes at 30°C	29	18	12.5

Properties

Appearance

Clear

Typical Liquid Resin Properties

	Value	Units	Test Method / Conditions
Viscosity (at 25°C, spindle 3, 60 RPM)	400	cP	Brookfield LVF Viscometer
Specific Gravity (at 25°C)	1.11	-	-
Acid Value	24	mg KOH/g	-
Volatile Content	38	%	-

Laminate properties

	Value	Units	Test Method / Conditions
Glass Content (cure 1)*	32	%	-
Tensile Strength (cure 1)*	122	MPa	-
Tensile Modulus (cure 1)*	8500	MPa	-
Elongation at Break (cure 1)*	2	%	-
Flexural Strength (cure 1)*	183	MPa	-
Flexural Modulus (cure 1)*	6300	MPa	-
Glass Content (cure 2)*	32	%	-
Tensile Strength (cure 2)*	117	MPa	-
Tensile Modulus (cure 2)*	8400	MPa	-
Elongation at Break (cure 2)*	2	%	-
Flexural Strength (cure 2)*	174	MPa	-
Flexural Modulus (cure 2)*	5700	MPa	-

Resin Properties - Unfilled Casting (Cured)

	Value	Units	Test Method / Conditions
Barcol Hardness (Model GYZJ 934 -1)	45	-	-
Water Absorption (24 h, at 23°C)	18	mg	-
Deflection Temperature Under Load (1.80 MPa)	69	°C	-
Specific Gravity (at 25°C)	1.21	-	-
Elongation at Break (at 20°C)	2.1	%	-
Tensile Strength	65	MPa	-
Tensile Modulus	3800	MPa	-

Note

* - Made with 4 layers of 450g/m² mat

Cure 1 - 24 hours at 20°C, 16 hours at 40°C

Cure 2 - As Cure 1, then after 2 hours boil in water (tested wet)

Regulatory & Compliance

Quality Standards

BS 3532

Packaging & Availability

Packaging Type

Totes (IBC)

Packaging Information

Crystic 124PA are supplied in 225kg steel containers.

Storage & Handling

Storage Conditions

Crystic® Polyester Resin 124PA should be stored in the dark in suitable closed containers. It is recommended that the storage temperature should be less than 20°C where practical, but should not exceed 30°C. Ideally, containers should be opened only immediately prior to use.