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      HomeMoldeadoMasas de colada y resinas

      Masas de colada y resinas

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      17 article   /   50 Variants
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      • Resina rápida de PUR para colada G27
        2 component quick casting resin, without fillers, hard (approx. 70 Sh.D), highly impact-resistant, very low viscosity (pours extremely well), a substantial amount of fillers can be added, odorless, cures to an opaque...
        4 Variants
        Resina rápida de PUR para colada G27
        from 20,50 €
      • Resina acrílica Acrystal Prima, colada/laminado
        two component water-based acrylic resin system for casting, laminating and coating, for interior as well as protected exterior spaces, hard (81-83 Sh-D hardness), impact resistant, odourless, material is opaque white...
        4 Variants
        Resina acrílica Acrystal Prima, colada/laminado
        from 26,60 €
      • Resina rápida de PUR para colada G26
        2 component quick casting resin, without fillers, hard (approx. 70 Sh.D), highly impact-resistant, very low viscosity (pours very well), a substantial amount of fillers can be added, cures to an opaque beige-brown...
        4 Variants
        Resina rápida de PUR para colada G26
        from 21,50 €
      • Resina de poliéster para colada R&G, cristalina
        2 component casting resin from unsaturated ortophtal acid polyester resin and MEKP hardener, preaccelerated, medium reactivity, styrene content is 35%, without fillers, hard, very low viscosity (pours well), when...
        2 Variants
        Resina de poliéster para colada R&G, cristalina
        from 12,20 €
      • Resina de poliéster para colada GTS, cristalina
        2 component casting resin from unsaturated ortophtal acid and polyester resin and MEKP hardener, preaccelerated, medium reactivity, styrene content is 35%, without fillers, hard, very low viscosity (pours well), when...
        2 Variants
        Resina de poliéster para colada GTS, cristalina
        from 19,90 €
      • Resina de PUR para colada/moldes U1404
        2 component casting resin, without fillers, soft to medium hard (approx. 40 to 80 Sh.A), extremely elastic, very good mechanical stability, very low viscosity (pours well), material is reddish opaque when cured,...
        5 Variants
        Resina de PUR para colada/moldes U1404
        from 27,80 €
      • Creastone concrete casting compound
        Mixing ratio
        10:1
        100 gr powder
        50 ml casting compound
        Hardening time
        2 - 3 days
        Paintable
        1 - 2 days after demoulding
        2 Variants
        Creastone concrete casting compound
        from 5,90 €
      • Biothan/Biodur 1785/330 casting resin, hard
        Material
        two component polyutethane casting resin
        Colour
        colourless, transparent when hardened
        Shore-hardness
        hard (ca. 83 - 85 Sh-A)
        Mixing ration
        resin to hardener ca. 1 : 2,5
        2 Variants
        Biothan/Biodur 1785/330 casting resin, hard
        from 26,90 €
      • Resina cristal Gedeo, transparente, de color
        2-component epoxy resin casting material, transparent, colourless, waterproof and UV resistant, mixing ratio of resin to water is 2:1, curing time: 12 hours for the surface, 24 hours for the core, shelf life when...
        5 Variants
        Resina cristal Gedeo, transparente, de color
        from 14,50 €
      • Biothan / Biodur 1770/330 casting resin, soft
        Material
        two component polyutethane casting resin
        Colour
        colourless, transparent when hardened
        Shore-hardness
        soft ((ca. 40 - 70 Sh-A)
        Mixing ration
        resin to hardener ca. 1,5-2,5 : 1
        2 Variants
        Biothan / Biodur 1770/330 casting resin, soft
        from 44,90 €
      • Resina epoxi para colada, cristalina
        cold-curing, two-component casting resin consisting of bisphenol A-epichlorohydrin and epoxy hardener with polyoxyalkyleneamine, unfilled, hard, very low viscosity (very pourable), cured material is colourless and...
        4 Variants
        Resina epoxi para colada, cristalina
        from 16,70 €
      • Agente retardante Acrystal
        retarding agent for the two component acrylic resin system, liquid, transparent, colourless, odourless, non-toxic, mixing ratio (as percentage of weight): 0.2 – 0.3 % of the acrylic resin mixture.
         
        Agente retardante Acrystal
        from 13,90 €
      • Tinte-resina Gedeo
        2-component epoxy resin casting material, transparent and colourless, mixing ratio of resin to water is 2:1, curing time: 6 hours for the surface, 12 hours for the core, shelf life when properly stored: minimum of 6...
         
        Tinte-resina Gedeo
        from 19,00 €
      • Agente tixotropante Acrystal (espesante)
        thickening agent for two component acrylic resin systems, thixotropic, no odour, non-toxic, mixing ratio (as percentage of weight): 1-2 % of the acrylic mixture.
         
        Agente tixotropante Acrystal (espesante)
        from 19,90 €
      • Pigmentos para resina acrílica Acrystal
        liquid paint with high pigmentation and brilliancy for colouring the two component acrylic resin system, non-fading, solvent-free, odourless
        5 Variants
        Pigmentos para resina acrílica Acrystal
        from 18,50 €
      • Resina cristal Gedeo, transparente
        2-component epoxy resin casting material, transparent, colourless, waterproof and UV resistant, mixing ratio of resin to water is 2:1, curing time: 12 hours for the surface, 24 hours for the core, shelf life when...
        3 Variants
        Resina cristal Gedeo, transparente
        from 13,20 €
      • Resina anacarada Gedeo
        2-component epoxy resin casting material, opaque, waterproof and UV resistant, mixing ratio of resin to water is 2:1, curing time: 12 hours for the surface, 24 hours for the core, shelf life when properly stored:...
        3 Variants
        Resina anacarada Gedeo
        from 14,50 €
      Page 1 of 1
      Información sobre Masas de colada y resinas

      Despite the fact that it was very often requested, we hesitated to add casting resin to our product line for a long time because it is such a complex material and because without comprehensive background information it is really hard to get a handle on it. In the meantime, we have assembled an extensive assortment which will become even larger in the future. On the following pages we attempt to describe our products and product groups in such a way that the various differences are easily ascertained so that your search for the right one will be that much simpler. The terminology that will be employed needs to be explained in some instances. We would therefore like to call your attention to the “small lexicon for silicone” (PDF file) in the section “Accessories for Silicone” under the heading “Moulding Materials” (left side of webpage).

      Under the term “synthetic resins”, a group of materials is outlined which as a rule consists of two liquid or paste base components which, through an exothermic chemical reaction, create a more or less solid material. In the section “Adhesives”, we have already introduced examples of synthetic resins like, for example, the reaction adhesive based on epoxy resin. Synthetic resins are used for many other purposes as well like, for example:

      • Moulding materials
      • Casting resins
      • Laminating resins (laminating glass, aramid or carbon fabrics or fleeces)
      • Surface resins
      • Fillers
      • Adhesives

      The synthetic resins that Modulor carries are, with few exceptions, ones used in making three-dimensional shapes by means of casting, moulding and for being used in the subsequent filling work. Information about moulding materials and fillers can be found in the corresponding sections under the heading “Three-Dimensional Moulds”. All of the casting resins that we have on offer will cure at room temperature. Curing through the heat of an oven is not required. In terms of their attributes and possible uses, the casting resins vary quite a bit. In the hand worker sector, the following areas of use are differentiated:

      • Making moulds
      • (Re)production of models and shaped pieces
      • Producing materials for panels and sheets
      • Casting construction pieces
      • Making tools (punching, embossing, deep-drawing…)

      We have, for the time being, limited our product range to the first three areas of use. In doing so, we differentiate between the following groups which have different attributes with respect to colour, transparency, shrinkage, solidity, etc.:

      • Unsaturated polyester casting resins (UP)
      • Polyurethane casting resins (PUR)
      • Elastic polyurethane casting resins (PUR) – can also be used as an elastic moulding material.
      • Gypsum/Acrylic casting resins (Acrystal)

      In addition, more materials can be found under the heading “Three Dimensional Moulds” which can be worked with using casting procedures but which, for structural reasons, are not included in the group “Casting Resins”:

      • Plaster materials (plaster and plaster-based casting materials)
      • Moulding materials (e.g. silicone)

      The following chart serves to present an overview of the basic differences distinguishing the various casting resin groups.

      Comparison of casting resins

      Attributes of the components/processing rigid polyurethane-
      casting resins (PUR)
      elastic polyurethane-
      casting resins (PUR)
      unsaturated polyester-
      casting resins (UP)
      Epoxy-
      casting resins (EP) 3)
      Gypsum/Acrylic-
      casting resins (Acrystal)
      The plastic category Duroplast Elastomer Duroplast Duroplast Synthetic gypsum/acrylic resin
      linear shrinkage slight slight very much extremly slight no shrinkage
      Shelf life (minimum) 6 - 12 months approx. 12 months 3 - 6 months 6 - 12 months 24 months
      Toxicological/hazard info as a rule, hazardous label required as a rule, hazardous label required hazardous label required hazardous label required hazardous label NOT required
      Price inexpensive inexpensive reasonably priced expensive inexpensive
      Attributes of the material when cured          
      Transparency as a rule opaque 1) as a rule transparent transparent as a rule transparent opaque
      Heat resistance as a rule very little as a rule very little very little as a rule very little very little
      UV resistance only with additives 1) only with additives 1) only with additives 1) yes yes
      moisture resistance (fresh water) yes yes yes yes conditional 2)
      Comments          
      Special features
      • can be worked on well with machines
      • PUR components are sensitive to moisture
      • PUR components are sensitive to moisture
      • colourless, highly transparent
      • can be worked on well with machines
      • long shelf life
      • excellent mechanical attributes
      • can be worked on well with machines
      • toxicologically safe
      • mechanical attributes much better than those of gypsums
      Intended uses reproduction, engineering purposes moulding and reproduction reproduction reproduction, engineering purposes reproduction, lamination

      All the information refers primarily to the materials on offer at Modulor.
      1) at Modulor there are transparent, UV resistant PUR and polyester casting resins
      2) Acrystal products can withstand weathering but are not suitable for long term exposure to water
      3) Will only be available at Modulor sometime in the future.

      Attention: The following information and guidelines refer primarily to the duroplasts and elastomers found in the chart above. Comprehensive information about gypsum/acrylic casting resins (ACRYSTAL) can be found in the section Gypsum/Acrylic Materials.

      Storage and Shelf Life: Resins and hardeners cannot be stored forever. Normally, when properly stored (unopened original package kept at between 15 and 25 °C), they will last between 6 and 12 months, although we have been told by people in the business that they have actually had successful results with 10 year old products. We can, however, not guarantee that that will always be the case!

      Safety at work: No matter which casting resin is used, the preparations for the work, the necessary aids and the measures taken regarding work safety are always the same. The work area should be clean, large enough and well ventilated (work by an open window!). There should be no open fire.

      Because contact with the skin can cause allergic reactions and any swallowing can cause serious health problems, gloves should be worn and food and the like kept at a safe distance. You should particularly avoid contaminating door knobs, light switches and other such often handled things. If the mixed resin or its components should happen to be swallowed or land in an eye (wear protective goggles!), a doctor should be consulted and the eyes should be immediately and thoroughly (10 to 15 minutes) washed out with cold water. We will gladly supply you with safety data sheets for each of the individual products.

      Treatment: The following aids will be necessary for making any work that much easier and quicker:

      • a substrate (enough newspaper to cover the working area)
      • DISPOSABLE GLOVES made of latex
      • many rags for wiping up any droppings
      • a clean, dry MEASURING CUP, DISPOSABLE SYRINGES and an exact SCALE for precise measuring of the individual components
      • WOODEN STIRRING SPATULA – or even better, a drill with a stirrer
      • a clean, dry MIXING CUP for mixing the resin
      • a DUST/PARTICULATE MASK (especially when working with polyester casting resin because the styrol that it contains is corrosive to mucous membranes!)

      The resin and hardener should be completely mixed together in a clean, dry container according to the given mixing ratios (based on the weight) making sure that none is left stuck to sides of the container. Depending on the amounts involved, the mixing of the two components can be done by hand with a stirring spatula or through the use of a drill and an appropriate metal stirrer. In order not to negatively effect the precision of the mould, care must be taken that as few bubbles as possible are produced during this process. If the metal stirrer and drill are to be used, the slowest possible drill speed should therefore be chosen.

      The working times given for each individual product are based on work done at room temperature. The times begin immediately at the moment that the two components are mixed together. In so far as the working time allows, you should let the already stirred resin aerate for a short time before pouring. In the case of higher viscosity casting resins, it is advisable to evacuate the mixture in a vacuum so that any air bubbles can escape. A markedly larger container must be chosen for such a resin mix because the material will expand considerably in a vacuum (see “vacuum device” in the little lexicon for silicone). If no vacuum device is available, the mixture should be poured from a height of from 20 to 30 cm in a thin stream over a spatula so that the air bubbles will thereby burst. Really persistent bubbles can also be burst with a PIN. When pouring, you should begin at the deepest part of the mould and allow the mixture to slowly rise.

      The mould to be used must first be treated with a RELEASE AGENT so as to avoid having it stick to the moulded piece whereby the subsequent de-moulding would be much more difficult. Silicone moulds are self releasing and must not necessarily be coated with a release agent. In order to lengthen the service life of a silicone mould, we recommend that you always use a release agent in cases where aggressive media are being poured. Porous moulds (e.g. wooden) must be sealed before applying the release agent. For this work, METHYL CELLULOSE or concentrated soap brine can be used.

      Resin and hardener components for casting resins harden in a heat developing, “exotherm” reaction. The amount of heat produced is dependent on the size of the poured piece. The larger the poured piece, the hotter the mixture. Very high temperatures during casting should, however, be avoided. They not only shorten the service life but cause markedly more shrinkage as well and can even, in extreme instances, ruin the poured material completely. Polyurethane casting resins, for example, are not especially temperature resistant. When working with PUR quick casting resin, temperatures over 100 °C can be produced when an extremely large amount is poured at one time. In order to prevent that, either more separate steps must be employed and/or the resin must be mixed with the proper FILLER material.

      After the de-moulding time has elapsed (see the chart “Casting resins – a comparison of our products”) the de-moulding process can begin. Casting resin does not attain its final physical attributes until at least a few days have passed. This hardening time can normally be reduced by means of exposing the piece to an external heat source for a number of hours.

      If aggressive media (polyester, PUR or epoxy resin) are poured in a silicone mould, the mould should be allowed to air out for an adequate time after de-moulding because the chemicals contained in the media can lead to the mould becoming brittle. This can be done a lot faster and more completely by putting the mould over night in an oven heated to 60 °C.

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