June 17 2021 at 04:38am
Nord Composites S.A.
ULTRAFAST TOOLING RESIN
|• User Friendly, one component system
• Fast, make a mould in one day
• Zero shrinkage, on the cured laminate
• Produces tough, durable, long life moulds
• Pre accelerated resin with fillers added
• Performs like a normal laminating resin
• Rapid cure gives rapid mould making
• Perfect surface replication on the cured laminate
• Colour shift indicates when the laminate is cure
• Speed of production cuts mould making costs
• Longer life than conventional GRP moulds
• Complete dimensional stability
• Normal resin storage life without filler settlement
• Vinyl ester resins & gel coats available for enhanced performance
Norester RM 2000/50 is a specially formulated, unsaturated polyester resin designed to produce long life, high quality moulds for the fabrication of thermosetting composite parts.
By careful selection of the filling elements in RM 2000/50, the normal shrinkage which occurs with standard tooling resins is counter balanced to give a final mould cure which does not shrink retains the exact dimensions of the plug, with perfect surface reproduction.
In order to achieve the necessary level of cure with Norester? RM 2000/50, the workshop must have a minimum temperature of 15oC, ideally 18-25oC. Above 25oC, we recommend the LGT version.
If the temperature is too low the optimum cure and zero shrink properties will not be achieved.
1 Preparation The surface of the plug must be free from voids and defects, with a propriety release agent applied.
2 GEL COAT Nord isophthalic tooling gel coat GC 200/201 is recommended for optimum tool life. For enhance durability GC 206/207, vinyl ester gel coat should be used.
1 x 200 or 300 gr/m2 chopped strand mat (emulsion bound) with the resin Norester® RM 2000/50
4 Norester® RM 2000/50 Laminate
After the first laminate is cured and has cooled a further 1,800 – 2,100 gm/m2 can be laid down to build mould thickness if required.
5 Curing Norester® RM 2000/50
6 Mould Stiffening & Reinforcing Elements
Mould Life & Material Selection
Isopthalic gel coat up to & Norester® RM 2000 250 mouldings
Vinyl ester gel coat more than & Norester® RM 2000 250 mouldings
Vinyl ester gel coat, vinyl ester 1st layer up to & Norester® RM 2000 1,000 mouldings
All these recommendations are based on tests made in our laboratory and from experience with customers. Each batch of Norester® RM 2000 is carefully tested and approved before dispatch. It is the responsibility of customers to ensure that products made with Norester® RM 2000 are suitable for the application intended.
| TECHNICAL DATA SHEET
Typical properties of liquid Norester® RM 2000
• Storage life 3 months (mix before use)
• Specific gravity 1,45
• Appearance beige liquid
• Gel time 40 – 45 minutes
(20oC – 1% CATA 2000 on 100g) 60 – 70 minutes for LGT version
• Peak exotherm on cast resin 120 – 125oC
(20oC – 1% CATA 2000 on 100g)
• Brookfield viscosity 1200 – 1700 mPa.s
(20oC – sp4 100 rpm)
• Non volatile content 72 – 74%
Mechanical properties of cast Norester® RM 2000
• Heat distortion of temperature 80oC (cast resin)
• Tensile strength* 84.4 MPa
• Elongation at break* 2%
• Flexural strength* 155.8 MPa
• Test realized on resin reinforced with 23% glass fiber.
| Storage conditions and handling
The tooling resin NORESTER® RM 2000 is subject to the Highly Flammable Liquid Regulations. The product should be stored under cool conditions in closed opaque containers at a temperature not exceeding 20oC. Avoid exposure to heat sources such as direct sunlight.
Information contained in this publication are given in a good faith without warranty or guarantee.
From Plug to Mould Workshop Conditions
This is document with 15 steps, details the manufacturing sequence for a composite mould, from basic plug manufacture to the final de- moulded product.
1a CNC ( Computer Numetic Control) machining of the Polyurethane foam. Machine the foam to between -8 to -12 mm of the final foam.
1b CNC ( Computer Numetic Control) machining of the Polystyrene foam. Machine the foam to between -8 to -12 mm of the final foam.
2 Application of the resin Norester 854 to the Polystyrene plug. Apply 0.8 - 1 mm of resin to the polyestyrene ( density > 25 kg/m2) with a brush or roller. Laminate 2 layers powder bound mat, 300 g/m2 with the resin, roll between layers and make the laminate 10-15 cm wider than the plug dimention. Allow to care at ambient temperature for 24 hrs before applying the NCL 804PVR Gray.
3 Application of NCL 804PVRB Gray on the plug. Spray with spray gel coat machine (pump ratio 20 : 1), use sveral thin passes to obtain a thickness of 5-6 mm. To obtain the final dimension for machining it is necessary to :
A - 8 mm CNC machining : 2 layers.B - 12 mm CNC nachining : 3 layers
4 CNC machining of the NCL 804PVRB Gray
5 Application of Nord Appret 230. Apply 450 - 600 micron in several fine passes
6 Sanding of Nord Appret 230. Sand with a dry paper.
7 Application of Nord Laque 210. Spray with several fine layers in order to obtain the best finish.
8 Sanding the laque. Sand with different grades of wet & dry paper. Polishing the Laque with a polishing machine and different grades of polishing paste, until an utra high gloss shine is porduced
9 Application of release agent
10a Application of spray gel coat GC 207. Apply 700 to 800 microm layers, wet on wet in 4 or 5 passes.
10b Application of brush gel coat GC 206. Apply 700 to 800 micron layers in 2 passes.
11 Application of resin Norester 680 Apply 1 x 100 g/m2 powder bound mat 2 x 225 g/m2 powder bound mat.
12 Appliation of tooling resin RM 2000/50. Apply by hand lay up or spray gun using 2 rovings.
14 Adding wooden reinforceing ribs