View NT 100 Product Data Sheet

View NT 100LV Product Data Sheet

NT 100 is proprietary (Patent Pending) reactive thermoplastic based polymer spray Adhesive that is designed to bond dry reinforcements and composite matrices including Cores in place prior to incorporating resin through various processes like resin Infusion, RTM, VARTM, RTM Light or fiberglass pre-forms. NT 100 is uniquely Formulated to be compatible with most resin systems mainly polyester, vinyl ester and epoxy resins ^{1, 2}. The product is solvent based and after spraying builds tack within seconds and will be tack free in approximately 2 - 3 minutes. ¹. Packaging options include pint sample, quart and 5 gallon or 55 gallon containers. Aerosol packaging options will be considered upon request.

Product Highlights:

• Compatible with VE, Polyester and Epoxy ²
• Tack time 15-20 sec, tack free 2-3 minutes ¹
• Not affected by ambient temperature/humidity ¹
• Solvent based, non-aerosol package
• Very effective tack mechanism

Product Benefits:

• Little to no change in laminate shear properties with typical usage ²
• Mechanically bonds or holds most types of reinforcements
• Maintains position of reinforcement for days without sagging
• Easy to clean up with most solvents, easy to dispose containers
• Use less than competitive brands

Typical Characteristics @ 75° F (24° C):

Tack STT:	2-3 minutes
VOC g/l:	544.73 g/l   4.54 lg/gal
Unit weight:	7.54 lb/gallon

Important Notes: Read Material Safety Data Sheet before handling or using this product:

1. The tack time is dependant on temperature, colder temperature will increase tack time and warmer conditions will decrease tack time. Resin solubility of NT 100 and subsequent wetting of reinforcements are also affected by temperature, colder temperatures will slow wet out of reinforcements and should be avoided. The best results are achieved with material temperatures > 75° F.

2. Independent testing has shown little to no appreciable physical properties loss in bending shear testing at higher than normal applications (<90 gsm) on VE and Polyester laminates. Using a typical infusion grade Bis A epoxy testing has also shown no appreciable loss in physical properties at normal application levels < 30 gsm.

All tests carried out by independent laboratory. This information is provided in good faith and is subject to modifications without prior notification. It does not constitute a commitment, neither a contractual document. Nida-Core Corp will not assume any liability from use or misuse of data presented herein. Assessment of suitability is the responsibility of the end user only.

Package:

Nida Tack currently packages the product in open containers drums, 5 gallon pails and one gallon cans. Once the product is completely used the can be properly disposed of or the empty 5 gallon container reused. Aerosol canisters are typically used to dispense most spray tack adhesives, either small spray cans or larger capacity bottles. Small 12 or 16.75 oz spray cans are convenient but carry a significant cost penalty. Aerosol canisters in many regions are regulated waste and in many cases empty containers must be punctured and any liquid contents drained as hazardous waste. Larger bottles can pose the same disposal problem.

Tack properties:

Nida Tack offers great tack properties for most applications. The tack performs well on solid mold surfaces, behind gelcoat and between textile fabrics. It is in these areas the molder is trying to minimize mold surface defects, dry glass or interference with interlaminate shear properties of final molded part. Typically it is only required to apply one pass on solid surface, and misting both fabric surfaces before adhering them together. An evenly sprayed fine mist over the surface will have tack immediately (no need to wait). The tack will linger for approximately a minute and quickly following that diminish to no tack. The tacked fabric will be held in place mechanical through a series of glass to polymer junctions created by the reforming solid polymer. Tacking cores can be difficult as the open cell structure traps solvents and interferes with the reformation of the polymer (more tack is required and may take longer to tack while waiting for additional solvent to flash). Composite staples can be used to hold in place, making sure the core is kerf cut to properly conform to part geometry. Other consumables can be equally difficult to bond and other solutions can be provided.

NIDATACK Engineered Tack Adhesive

High Tack Spray Adhesive for infusion that CrossLinks with Resin Systems
NT100 and NT100LV Spray Tack Adhesives For Closed Molding

Principle Features of Nida Tack:

• Patent pending product developed specifically for use in tacking fiber reinforced composite materials.
• No rubber cement compounds that interfere with lamination resins or Gelcoats
• Based upon a reactive polymer that becomes dry to the touch in several minutes following the Tack Phase.
• The reactive polymer cross-links with lamination resins
• Even excessive application between reinforcements layers results in minimal loss of mechanical properties.
• Use directly on mold or behind Gelcoat has been shown not result in cosmetic defects like most other tacks on the market!

Compatibility with Polyester Resins

• Nida Tack is based on a styrene soluble reactive polymer and a Non-HAP solvent.
• Nida Tack exhibits a Tack Phase for several minutes as the solvent flashes, and then becomes dry to the touch.
• The reactive polymer readily dissolves in styrenated resins, then cross-links and co-cures with the resin.
• Independent testing has confirmed that even higher than normal applications of Nida Tack directly on the mold surface, behind the gelcoat, or between layers of textile reinforcements have produced minimal effect on mechanical properties or surface cosmetics.
• Fading blue dye- fades to neutral with peroxide catalysts

Compatibility with Epoxy Resins

• Nida Tack has also proven to be compatible with low viscosity epoxy resins typically used in infusion.
• The solubility and compatibility is dependant on several factors including reactive diluents used to reduce viscosity of epoxy resins.
• Independent testing has shown that normal amounts required to tack reinforcements have produced little to no effect on molded surfaces or interlaminar shear properties of infused epoxy laminates.
• Prospective customers should always test the product for its effectiveness and determine the suitability for use prior to using in production parts.

Nida Tack Offered in Two Concentrations

NT100
- NT100 original version at 40% solids,
- Provides maximum deposition rates and tack,
- May be cut with MEK to 30% solids for lighter application.
- Fading blue version

NT100LV
- NT100LV low viscosity version at 30% solids,
- Facilitates use with a wide variety of spray equipment and nozzles.
- Fading blue version (either version can be made clear no dye)

Application Overview

• Nida Tack is not intended to be used with aerosol propellants, and is not offered in disposable aerosol cans.
• Nida Tack is commercialized according to weight and offered in a variety of containers from pint samples to drums.
• A wide variety of commercial spray equipment using low pressure compressed air have been qualified.
• Preferred systems are "Airless spray guns" projecting the product alone with suitable droplet size and distribution.
• Minimum cost HVLP type paint guns may also be used.
• Pressure pot reservoirs may be used with long lines for extended autonomy and range.

Application Equipment

NTS3 Airless Gun with 3 gal Reservoir

• Stainless steel gun and tank
• Quick connect air and liquid feed lines,
• May be rigged with manifold to support multiple guns from a single tank,
• Directional fan spray pattern is ~6in wide at 14-18in from surface
• Typical spray deposition rate is ~ 1g solids/sqft per 1 second pass

« TeeJet- AA23L-Gun

NTSS Airless Sprayer with 32oz Canister

• Sure Shot Airless Sprayer
• Powder Coated Steel, Brass Nozzle
• P602 Adjustable Nozzle with Conical fine mist spray pattern
• Model #6102 Includes Pressure Relief Valve
• Functionally similar to aerosols without propellants and waste

« Pressure Relieve Valve

HVLP Sprayers (High Volume Low Pressure)

• Widely available & inexpensive
• May be used with reservoirs
• Fine mist with even coverage
• Excessive atomization causes overspray and odor
• Air flow causes Blow-back from working surfaces

Application Overview

The Tack Phase is a function of the droplet size when sprayed, Finer Mist Droplets will:

• Increases the rate of flash of the solvent whereby,
• Reduces the time to develop tack to just a few seconds,
• Reduces the time to become dry to the touch to less than 2 minutes

Spray patterns are typically about 6" width at a distance of 14-18"

Patterns are commonly based upon a two pass, left and right motion

Spray Speed is commonly about 2 linear ft/sec, providing the equivalent coverage rate of about 1 ft2 per second for each pass.

Experienced users may adapt to single pass spray patterns using higher flow nozzles to increase productivity

Lighter duty areas large flat areas might only require a single quicker pass!

Initial Layers of Reinforcements positioned direct to mold surfaces or to Gelcoats typically use the spray applied only to the tool surface.

Subsequent Layers of Reinforcements positioned fabric to fabric use the spray applied to each material with one pass over each (back to front).

Actual quantity of material required is established by experience according to material types, part shapes, number of layers, and orientation to vertical or full inversion.

Coverage may be minimized to specific areas.

Nida Tack may also be used to position infusion molding materials including flow media , peal ply, breather felts, and films.

Nida Tack is capable of holding material to counter-mold surfaces through full inversion to closure.

NT100 and NT100LV are formulated for in-mold application, use in preforms could be considered in applications with minimal handling.

Repositioning of fabrics is easily accommodated by pealing back an individual layer and reapplication of the product.

Additional tack can be applied at lower rates as it can reactivate previously applied and dried material.

Material sprayed too closely or too much may penetrate and temporarily release previous layers, either wait a few seconds for tack to rebuild or may require reapplication in that area.

Nida Tack dries to the touch, so tool handles and overspray areas do not become sticky.

Nida-Tack is easily cleaned with a solvent such as MEK or Acetone.

NidaTack does not permanently harden in nozzles and lines, and can easily be purged. Guns can typically be left for days without the need for disassembly of spray equipment.

Primary applications that confirm compatibility!

Mold Surface – Tacking directly has not been shown to cause defects!

• Tested with various polymer releases including Frekote and Chemlease with no issues using either Polyester, VE, or Epoxy resin infusion.
• Maintains tight contact in sharp deep radius to eliminate bridging or spring back of reinforcements.

Gelcoat - Tack directly has not been shown to cause defects!

• Apply directly behind Gelcoat without need for barriers or skin coat
• Photographs illustrate visible differences between leading "compatible-tack" competitor vs Nida Tack.