Anti-adhesive (separating) lubricants. Release Agents Silicone Release Agent for Molds

Product Description

Curable release agent. Creates a particularly strong polymeric anti-adhesive film on the mold with an increased service life.

Penta-119-1 is a composition cured by air moisture based on silicone polymers in organic solvents, which forms an ultra-thin, strong, elastic film on the treated surface. The film has high adhesion to metal, gypsum, elastomers, glass, while being chemically inert, corrosion inactive, weather and water resistant, minimally transferred to the molded material, fully retains its physical and mechanical properties in the temperature range from -40 °C C to +250 C O.

It is used to obtain an anti-adhesive coating on molds in the molding of rubber, polyethylene products, in the processing of plastics and rubbers. Can be used on elastic diaphragms.

Packing options:

Areas of use

Penta-119-1 is a composition cured by air moisture based on silicone polymers in organic solvents, which forms an ultra-thin, strong, elastic film on the treated surface. The film has high adhesion to metal, gypsum, elastomers, glass, while being chemically inert, corrosion inactive, weather and water resistant, minimally transferred to the molded material, fully retains its physical and mechanical properties in the temperature range from -40°C to + 250 CO.
It is used to obtain an anti-adhesive coating on molds in the molding of rubber, polyethylene products, in the processing of plastics and rubbers. Can be used on elastic diaphragms.

Method of application

Before use, the composition must be kept at the workshop temperature for 24 hours and mixed. The mold should be cleaned and degreased. Apply the composition with a spray gun or brush. Do not apply to a hot mold!

Base coat: apply 2-3 coats with a drying interval of 15 minutes between coats. If the molding takes place at room temperature, then the last layer must be kept for 30-40 minutes, if the molding takes place at a high temperature, then you can start heating the mold immediately after applying the last layer.

The applied layer should be hard to the touch, adhesive tape (adhesive tape) should not stick to it. Renewal: apply 1 coat of lubricant, hold for 30-40 minutes.

Do not return the grease taken from the factory container. Spray equipment must be cleaned with solvent after use.

The method of removing the used lubricant layer: put a rag moistened with a solvent (Nefras C2 80/120) into the mold, wait 10-15 minutes, while the remaining lubricant will swell and can be removed mechanically. Small molds can be placed in an alkali solution and then mechanically remove the lubricant layer.

Hazard Information

H225: Highly flammable liquid. Vapors form explosive mixtures with air.
H304: May be fatal if swallowed and enters airways.
H340: May cause genetic defects.
H350: May cause cancer.
P201-202: Be instructed in the use of this product and read the safety instructions before use.
P210: Keep away from sources of ignition/sparks/open flames. Do not smoke.
P233: Keep container tightly closed.
P280: Use gloves, overalls and eye protection, respirators.
P 301 + P 310 + P 331: IF SWALLOWED: Seek immediate medical attention. Do not induce vomiting!
P308 + P311: Seek medical attention IF exposure is suspected.
More detailed information is contained in the safety data sheet.

Output control parameters in accordance with TU 2257-082-40245042-2004, i.1-6

Store: in hermetically sealed containers in well-ventilated warehouses equipped with fire extinguishing equipment, away from heating devices, in places protected from direct sunlight, excluding contact with strong alkalis, acids, oxidizing agents.

Silicone lubricants

TU 2229-146-22736960-2013

A concentrate based on silicones dissolved in a mixture of solvents is designed to create an anti-adhesive coating:

on molds when molding products from integral polyurethane foams;

on molds when molding products from rigid and semi-rigid polyurethane foams,

in the manufacture of molds, at the border of polyurethane / model;

in the manufacture of elastic polyurethane molds, at the border of polyurethane / casting of products from concrete, gypsum, cement.

Works as a concentrate or as a solution in hydrocarbon or chlorinated solvents.

When diluted with solvents, the mold must be lubricated before each pour.

BENEFITS

effective in the temperature range from plus 20ºС to 100ºС;

easy to apply by spraying with a gun or by hand with a brush, providing good separation


glossy surface of the product;

when applied as a concentrate (without diluting), with a single application, several removals of products from the mold can be carried out (4-5 removals).

• Decision
• Characteristics
• Documentation

PACKAGING

metal drums 50, 100, 200 kg

metal drums 1, 3, 5,10, 20 kg

INSTRUCTIONS FOR USE

Before applying lubricant, the mold must be thoroughly cleaned and degreased to remove traces of previous coatings, as well as oils. Apply by brush, roller or spray. The use of a concentrate in the production of polyurethane elastomers using molds made of metal (aluminum, steel) or fiberglass allows you to get several cuts.

When using silicone lubricant as a solution in hydrocarbon or chlorinated solvents, molds must be lubricated before each pour.

1:8 - The most optimal option for diluting silicone grease - when forming microcellular and rigid foams, polyurethane elastomers;

1:10 - when molding integral and semi-rigid foams.

The amount of lubricant to be applied may vary depending on the size of the products being cast and the material used.

IMPORTANT! If the molds are new or have been damaged by abrasive materials, it is necessary to apply a layer of lubricant, heat the mold, rub the lubricant into the surface of the mold with a clean cloth and apply a layer of lubricant again. Repeat the procedure twice. Before painting or gluing the cast parts, they must be thoroughly cleaned of release agent (degreased). Nefras C2 80/120 (Kalosh gasoline, BR-2), white spirit is used as a diluent.

TOOL CLEANING

After work, all equipment and tools used when working with lubricant should be cleaned with solvent.

SAFETY AND PRECAUTIONS

Use lubricant in well-ventilated areas, especially when using a sprayer. When applying lubricant in the working area, there must be no sources of fire, sparking of electrical equipment is unacceptable.

To reduce the risk of lubricant getting on the skin and eyes, it is necessary to work in goggles, rubber gloves, and long-sleeved clothing. Contact of the lubricant with the skin or mucous membranes of the eyes may cause irritation. In case of contact with eyes, rinse with water for 15 minutes and be sure to consult a doctor; in case of contact with skin, wash off the composition with soap and water.

TRANSPORT AND STORAGE CONDITIONS

Transportation is carried out by any type of transport, in conditions that exclude their moisture, pollution, mechanical damage to the container and exposure to sunlight.

Shelf life 12 months from the date of manufacture in unopened and undamaged original packaging when stored in dry warehouses at temperatures from minus 15°C to plus 30°C.

LEGAL INFORMATION

All information and technical parameters described in this technical sheet are taken from the specifications, as well as the results of laboratory studies conducted at the company NPF Adhesive LLC. Their actual values ​​may differ due to reasons beyond our control (temperature, humidity, surface preparation, etc.). The selected product must be independently tested by the user for suitability for the intended application.

The information is correct if the product is stored and used according to the manufacturer's recommendations.

Release agents used in flexible diaphragm molding include: wax palm wax paste; aerosol compositions containing this paraffin; fluoropolymers or silicone resins; polymer films and metal foil. As a rule, anti-adhesion lubricants containing paraffin and resins hardly contaminate the surfaces of fiberglass products and do not impede their subsequent gluing or coating. Sometimes, to remove the gloss, the surface of the products is wiped with a solvent or lightly polished. In some cases, special outer layers are used to protect clean surfaces to be further bonded. Polymer films, metal foils, and sputtered metal coatings also serve as release agents when integral with the cured material.

Both wax-polished surfaces and spray-applied wax coatings are excellent release agents for composites curing at temperatures below 121°C. However, at higher temperatures, the paraffin causes degradation and discoloration of the laminate. In these cases, industrial grades of fluorinated hydrocarbons are recommended for lubrication.

The copolymer of tetrafluoroethylene and hexafluoropropylene, used as a release agent, forms a continuous film on the mold surfaces. The condition for the operation of such a coating is to maintain the curing temperature no higher than 177 ° C: with stronger heating, it collapses. Fluorine, which is a harmful, corrosive, highly toxic gas, is released from the copolymer at temperatures above 177°C.

Polytetrafluoroethylene is a stable polymeric substance that is often added to anti-adhesion lubricants operating at temperatures above 260 °C. These lubricants contain suspensions of finely atomized "Teflon" in a volatile dispersant. This lubricant does not form a continuous film when it hits the surface of the molds, but the Teflon particles provide an excellent dry lubricant that guarantees the release of the cured product from it. Moreover, the particles that have passed to the surface of the finished product are easily removed when wiped with a solvent. Since the market offers a large number of industrial anti-adhesion lubricants containing fluorinated hydrocarbons, it is necessary to carefully follow all manufacturer's recommendations for their use and limitations.

Frecote produces an anti-adhesion lubricant based on eylan resin (rather than silicone), which is stable up to 482 ° C. At the same time, some silicone greases can only be used up to 204 °C. The compositions of these resins are adequate provided that the recommendations of their manufacturers are strictly followed. Some of them allow you to get surfaces that can be painted or glued without additional sanding.

When forming with an elastic diaphragm, films made of cellophane, PVA, polyethylene, polyethylene terephthalate "Mylar" and nylon are often used as a separating layer. The use of release films is generally only allowed on surfaces with a single curve or when molding flat products.

Tedlar fluoroplastic film and metal foil are often laminated to an appropriate laminate to protect it from environmental hazards or UV radiation (see Chapter 19 for environmental effects). Metallic foil also provides protection to aircraft parts from many types of radiation and lightning strikes and is often used as a decorative or reflective surface, to shield against electromagnetic radiation, and to form electrically conductive channels. If polymeric films and metal foils are laminated to the laminate during curing, the film or foil is first placed in the mold. Vacuum holes are often made in the mold to ensure that thin films adhere tightly to its surfaces so that they do not move when laying layers of molded material. Release agents are used only to facilitate mold maintenance and cleaning.

Instead of aluminum foil, aluminum coatings are sometimes applied to the surface. In these cases, the mold is first coated with PVA anti-adhesion lubricant, and then a layer of aluminum 0.13 mm thick is sprayed. Layers of composite material are laid directly on the sprayed metal. Sometimes the coating is polished so that it matches the adjoining parts in appearance.

Silicone oils and lubricants should be avoided as these are the most persistent surface contaminants of molded composites. They facilitate the peeling of secondary coatings and layers from the CM as effectively as the separation of the cured product itself from the mold. Silicone oils and greases migrate and cannot be removed by any means. They get into solvent-moistened cloths and sandpaper, and as a result, instead of extracting silicon-containing substances, they are smeared over the surface. Contaminated surfaces may be painted after sandblasting with unused abrasive.

The question arises as to the effective separation of the finished product from the mold, whether it is a mold for the shell or for a decorative element.

To solve this problem, anti-adhesive lubricants are used, which are dispersions of silicones and paraffins in various solvents.

Anti-adhesion lubricants are used to obtain a separating layer on the surface of the mold when creating the shell of polyurethane foam, when molding integral and elastic polyurethane foam, decorative products, sandwich panels, etc.)

Also, lubricants are used when creating polyurethane and silicone molds to create a coating at the interface with a model with a cement, gypsum or concrete base.

Compound

The solvent in anti-adhesive compounds is white spirit, gasoline, kerosene and other products.

The dispersed phase is silicone or wax materials.

Features of silicone anti-adhesion lubricants is that they;

• effective when operating from 20 to 100 °C,
• finished products are obtained with a matte surface,
• Easy to apply with a spray gun or brush
• do not loosen or soften rubber (typical for hydrocarbon lubricants).

When using wax formulations:

• operating temperature range reduced from 20 to 60 °C
• the surface of the finished product at the exit has a glossy sheen and a slight fat content

The type of feedstock affects the color of the release agent. So, when using silicones, transparent ones are obtained, and when using waxes, from light yellow to dark brown color compositions.

Concentration

Concentration plays an important role. Depending on the ratio of solvent and solute, they work either as a concentrate, making it possible to obtain several removals of the finished product, or as a solution, but the mold will have to be lubricated before each subsequent pour.

When working with concentrates, the following methods will be the optimal ratios for dilution:

• 1:5 - when pouring rigid polyurethane foams and polyurethane elastomers;
• 1:10 - when forming elastic and integral polyurethane foams.

For more information, check with the technologist. Ready-made lubricant components AC-15 and AC-60 produced in the calculated ratios do not need to be diluted.

Application

• Mix container with anti-adhesion lubricant before use. In winter, leave in a warm room for a day.
• Before applying the anti-adhesion lubricant, clean the mold from traces of past fillings: residues of sticky foam, oils, previous lubricants, etc.
• Degrease the mold with solvent.
• Preheat mold to 25°C
• Apply release coat with brush or spray gun. The amount of anti-adhesive lubricant is from 20 to 50 grams. per 1 m2Depending on the size of the cast products, material and shape
• Rub the lubricant onto the mold surface with a clean cloth.
• Leave to dry for 3-5 minutes, then apply a second coat.
• Fill in the mold.
• Withstand the right time (10-15 minutes depending on the size), get the finished product.
• Clean off residues and fill in the next one, lubricating with only one layer of grease. The concentrate allows you to make several removals from one lubrication of the mold.
• Depending on the type of lubricant and the area of ​​application, the finished product should be cleaned and polished.

DESCRIPTION AND SCOPE.

Lubricants of the PENTA®-100 series are used to obtain anti-adhesive coatings for molds when molding products from rubber, polyethylene, polypropylene, fiberglass on epoxy or polyester binders, in the processing of plastics and rubber, as well as to create protective and anti-adhesive coatings on the surface of glass, metal and polymeric materials, rubber substrates. Lubricants provide multiple removals with a single application. The number of removals depends on the molding conditions and the type of molded products.

PROPERTIES.

Lubricants of the PENTA®-100 series form a cross-linked polymer layer on the treated surface - an ultra-thin, strong, elastic film, capable of working up to +250°C. The film does not peel off at high shear forces (including friction of raw rubber on vulcanized rubber), is elastic up to 400% of the substrate elongation. Possesses high adhesion to substrate materials - metal, plaster, elastomers, glass.
PENTA®-100 series lubricants can significantly increase the productivity of pressing and molding due to a sharp reduction in the frequency of intermediate lubrication of molds. Increase the life of molds without cleaning and reduce the cost of cleaning them.
Lubricants allow you to increase the number of product removals by 10 or more times, and in some cases, a single application of lubricant allows molds to work until they are completely amortized.
Lubricants have a high drying rate:
Penta®-107, Penta®-119-1 - no more than 45 minutes at +25°C, Penta®-111 - no more than 45 minutes at +165°C.
Penta®-107, Penta®-119-1 and Penta®-111 are chemically inert, non-corrosive, have minimal transfer to the molded material, are weather and water resistant. In addition, they are economical and easy to use.

APPLICATION AND FEATURES OF WORK WITH LUBRICANTS.

It is recommended to apply the lubricant by spraying on a clean, grease-free surface at room temperature. It is possible to apply with a roller or brush in 2-4 layers with a drying interval between layers of 15 minutes. After applying the last layer, the press is heated to operating temperatures of 150 - 200°C, at this temperature the coating cures for 10-20 minutes, after which the product can be molded. After cleaning the press, the coating must be reapplied. Penta®-111 is also recommended for renewing the lubrication layer on a working hot mold.
FEATURES OF WORK. The portion of lubricants Penta®-107, Penta®-119-1 and Penta®-111 cast for work from the general volume and not used until the end of the shift should not be returned to the main container. It must be drained into a separate hermetically sealed container and used first. Do not use containers with traces of moisture.