how to mix primer and hardener
Question: What is the difference between a hardener, a primer, an accelerator, and an activator for adhesives and sealants? The more you open the hardener container, the more oxygen is added and the worse the result will be. Be sure to scrape the sides, corners, and bottom of the container several times during mixing. As with all epoxy resins, our systems are designed to work in a specific mix ratio between the two parts. When colouring with epoxy resin, it is therefore important to use only suitable colour pastes, colouring agents and pigments. Wipe the mixing stick clean and pour the contents of the mixing pot into the paint gun, using a filter to remove any lumps or pieces of grit. Most two-pack primers are mixed at a ratio of 3:1 or 4:1 with a compatible hardener. Check the left-hand markings on the mixing stick and choose a relevant number that reflects the amount of material you will need. Therefore, different products – even those of the same manufacturer or even different brands – must not be mixed with each other. Conversely, after 28 days of hydration, pores and capillaries are theoretically free of excess mix water and calcium hydroxide is abundant. Answer: This terminology can be confusing because the terms are often used interchangeably between technologies and differently by various manufacturers of the same technology. Note: Make sure to double check the maximum margin of error on your system. Place your mixing cup on the scale and reset the scale to zero by pressing the Tare or Zero Scale button. Technical Sales and Marketing. Begin by powering on your scale and choosing your unit of measurement. The mixing of resin and hardener must be done very thoroughly. How to Mix a Base Coat & Clear Coat for ... Headlight on an old car image by Scott Griessel from, Copyright 2020 Leaf Group Ltd. / Leaf Group Media, Hichem: Two-Pack Primer Filler Technical Data Sheet, Metal stirring stick with mix ratio markings. Use a measuring cup with a sufficiently fine scale so that you can measure exactly. If two-pack primers have been in storage for long periods of time, the high-solid content will sink to the bottom of the tin and the product binders will float to the top. Tip: A bucket with a spout is recommended for larger quantities. Only use the manufacturer's recommended mix ratios. The concrete disks with the hardener application on Day One significantly underperform when compared to the disks treated with the hardener on Day 28. Check the dates on the label of the primer against the technical data sheet provided to ensure the product has not exceeded the recommended shelf life. To establish flow through your paint spray gun, a small amount of thinners can be added. Click to download this Technical Bulletin as a PDF.

-Liquid hardeners were applied to all specimens at 200 sf/gal. Etching properties also mean that two-pack primers will stick more readily to repairs and bare metal. Observe Ambient Temperature.

Stir the primer, hardener and thinner continually until all three products have merged. How to Mix Primer & Thinner By Nathan Fisher Hunker may earn compensation through affiliate links in this story. When water reacts with cement, it forms calcium silicate hydrate gels that provide most of the strength in concrete. The following conditions were met for all prepared test specimens: -All concrete test specimens were cast from the same batch of concrete. Before using epoxy resin, it should be stored for 12 hours at a temperature of 20 to 25 degrees Celsius for optimal properties. Please click here to continue without javascript.. You can usually find the details on the packaging or containers. Wipe the inside of the pot clean with a piece of general-purpose cloth soaked with cellulose thinners if any old materials are present. Silicate-based liquid floor hardeners take advantage of calcium hydroxide by chemically reacting with it to form calcium silicate hydrate gels – the desired component in concrete.

This is very important to know, as heat is a very important factor for the success of your project: Temperatures below 20 degrees / 68F: The curing of the resin slows down considerably. Most mixing sticks are separated in measurements of one-tenth of a liter; if you need a half-liter quantity of primer, select the number 5 on the stirring stick. Could you please suggest an epoxy resin, along with a hardener and accelerator, to use as a raw material in the production of a high-temperature-resistant adhesive? Questions for publication should be directed to him at 242 Trails End, Aurora OH 44202; phone (440) 477-5164; fax (330) 247-1690; or email DrDave242@windstream.net . As concrete hydrates and cures, mix water can remain within the concrete for days or longer continuing to react with cement resulting in stronger concrete. The best tool for mixing epoxy resin is a flat spatula, similar to a paint stirrer.

A bucket with a spout is recommended for larger quantities. For best results, keep the temperature and humidity constant. The ASTM D4060 Taber Test Method mounts concrete disk test specimens to a turntable platform that rotates at a fixed speed.

The majority of the surface pores and capillaries in freshly placed concrete remain filled with mix water for several hours or longer after concrete placement. For webinar sponsorship information, visit www.bnpevents.com/webinars or email webinars@bnpmedia.com. By visiting this website, certain cookies have already been set, which you may delete and block. Step 1 Pour the primer paint into a mixing container. Tip: Also note the surface temperature: If you use an epoxy resin with a temperature of 20 degrees, but pour it onto a much colder surface, the temperature will be too low and curing may be impaired. Also note the surface temperature: If you use an epoxy resin with a temperature of 20 degrees, but pour it onto a much colder surface, the temperature will be too low and curing may be impaired. Calculate the amount of hardener needed based on that amount of epoxy resin that you poured. Pour in the primer carefully until it reaches the level you require. -The specimens were air-dry cured in a temperature controlled room in sealed plastic bags with 100% humidity for seven days at approximately 100°F and then allowed to air-dry for 21 days at room temperature. Take the mixing stick and place it upright against the inside wall of the pot with the ratio markings facing outward. Wash the mixing pot clean with cellulose thinners to finish. Establish how much mixed material you will need before continuing. A two-part epoxy primer brushed on the exposed wood ensures that the final repair will bond to the surface. You must have JavaScript enabled to enjoy a limited number of articles over the next 30 days. Wash the mixing pot clean with cellulose thinners to finish. Once sufficient hardener has been added, put the cap on the tin of hardener and store safely. A warm water bath can also bring the resin to the required temperature if it is in a hurry. Measuring and mixing epoxy resins accurately and safely is an essential skill for any resin user that wants to stay healthy and have great results with their project. A growing trend within the concrete flooring industry is to apply liquid hardeners on freshly-troweled concrete in what is referred to as a “pre-seal” or a “cure-coat.” Conversely, Nox-Crete has historically advised applicators to wait and apply liquid floor hardeners a minimum of 28 days after concrete placement to allow for maximum performance. Images: Chinnabanchon9Job / shutterstock.com. By visiting this website, certain cookies have already been set, which you may delete and block. Answer: This terminology can be confusing because the terms are often used interchangeably between technologies and differently by various manufacturers of the same technology. Step 1 Pour the primer paint into a mixing container. Take the hardener and check the markings that run through the middle of the mixing stick. What is the difference between thermoplastic and thermoset adhesives? Ask Dr. Dave is written by Dave Dunn, Ph.D., of F.L.D.

Sometimes the primer will serve to condition the surface and ensure maximum adhesion. In this way, the density of the materials is not important. If more is required to complete the job mix up a batch of 1.5 (minimum recommended mixture).

Things You'll Need ... to improve flow and shorten drying time. Epoxy resin reacts sensitively to temperatures. Dave is a former vice president and director of Loctite Corp. and has spent many years in troubleshooting adhesive and sealant problems. You can then mix the epoxy resin in a time-saving manner using a drill with a stirrer.

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