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PU1838 One-component polyurethane (PUR) corner angle adhesives

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PU1838 One-component polyurethane (PUR) corner angle adhesives.


One-component polyurethane (PUR) corner angle adhesives are moisture-curing, solvent-free sealants designed for structural bonding in aluminum, wood, and PVC window/door frames. They offer gap-filling properties, high tensile strength, elasticity (to absorb thermal expansion), and superior weather and water resistance。 Polyurethane Adhesive Translucent PU-1838 is a one-part, fast-hardening translucent, solvent-free moisture curing polyurethane adhesive which, once hardened, transforms into a very strong-grip adhesive with excellent resistance to water, temperatures, weathering and ageing conditions. Due to the excellent filling properties, it is suitable for use in beading/cord applications.  

 PU-1838 Designed for water-resistant bonding of wooden elements where a fast mechanical hold is necessary (10 minutes of clamp hold at room temperature) in order to permit working of hand-manufactured articles.

Suitable for structural strong-grip bonding of wooden elements on both porous and non porous substrates. Particularly useful and practical for high mechanical resistance assembly and outdoor applications.

How They Work
How They Work

Unlike standard two-part epoxies that require manual mixing, 1-component polyurethanes cure by reacting with ambient atmospheric moisture or the humidity present in the substrate. [1, 2, 3]

Key Advantages

  • Permanent Elasticity: Accommodates the natural flexing, vibration, and shifting of doors and windows over time.

  • Weatherproof: Performs reliably under extreme temperature fluctuations and UV exposure.

  • High Yield: Economical in consumption due to excellent non-sag, gap-filling capabilities.

  • Corrosion Protection: Effectively seals joints against moisture ingress, preventing internal metal oxidation. 

Application Guide

  1. Surface Prep: Ensure that both cutting surfaces and the corner cleat are dry and entirely free of oil, dust, and grease.

  2. Application: Extrude the adhesive directly from the cartridge into the hollow spaces or directly onto the corner cutting surfaces of the profile using a caulking gun.

  3. Assembly: Connect the mitered joints and insert the corner angles immediately.

  4. Curing: Clamp or fixture the assembly for the duration of the pressing/setting time to prevent shifting before the PUR fully cross-links


  • EP 3209A/B Two Component Black Epoxy Structural Adhesive


    Product description


    EP 3209A/B Epoxy adhesive is a room temperature/heat curing resin adhesive. This two-component bonding adhesive is designed for metal bonding, bonding of cube or SMC fiberglass parts, aluminum honeycomb plate splicing and magnetic steel tile bonding of motor products, ceramic film component sealing, internal structure bonding of lithium battery module, soft magnetic unit potting, high temperature sensor potting, etc.

    EP 3209A/B epoxy adhesive can cure in both room temperature and heating environment. After thoroughly mixing component A and component B at 100:50 (weight ratio), the product cures within a certain period of time to form protection.

    The cured glue has the following properties:

    Resistance to moisture, dirt, and other atmospheric components

    High strength, excellent adhesion

    Good pollution resistance, low surface pretreatment requirements

    No solvent, no curing byproducts

    Excellent high and low temperature resistance, -50℃-180℃

    Transformer oil resistance, low attenuation

    It has good adhesion to glass fiber cloth, aluminum and plastic, aluminum and aluminum and steel plate


    Technical parameters before and after curing:

    Test items Test standard Unit Part A Part B

    Appearance Visual --- Black paste Beige paste

    Viscosity GB/T 2794-2022 25 ° C, mPa·s 350,000±10,000 30,000±70,000

    Density GB/T 13354-1992 25 ° C, g/cm3 1.12±0.05 1.03±0.05

    Mixing ratio Mass ratio Ratio=A:B 100:50

    Mixing ratio Volume ratio Ratio=A:B 100:50

    Mixing viscosity GB/T 2794-2022 25 ° C, Pa·s 150,000±30,000

    Operating time GB/T 2794-2022 25 ° C, 100g, min 70±10

    Hardness GB/T 531.1-2008 Shore D 85±5

    Peel strength GB/T 528-2009 Kgf/cm2, Fe/Fe 240

    Kgf/cm2, AI/AI 226

    T-peel strength GB/T 2791-1995 N/mm(25℃) 6

    Shear strength GB/T 7124-2008 mPa·s ≥20

    Impact strength GB/T 1843-2008 KJ/m2 15

    Glass transition temperature GB/T 22567-2008 ℃ 110

    Coefficient of thermal expansion GB/T 1036-2008 U m/m / ℃ <Tg, 45

    >Tg, 152

    Thermal cracking temperature TGA 10℃/min ℃ 290

    Water absorption GB/T 8810-2005 24h, 25 ° C, % 0.45

    Dielectric strength GB/T 1692-2008 kV/mm (25 ° C) 22

    Dielectric loss GB/T 1693-2007 (1MHz) (25 ° C) 0.006

    Dielectric constant GB/T 1693-2007 (1MHz) (25 ° C) 3.1

    Volume resistance GB/T 1692-2008 DC500V,Ω· cm 5.20E +14

    EP 3090 transparent epoxy structural adhesive

    Order code: A: 2KEP6670; B: 2KEP6671; A+B: 2KEP6672

    MDEP 3090 black epoxy structural adhesive

    Order code: A: 2KEP6611; B: 2KEP6671; A+B: 2KEP6678

    l Component A: 1 kg/barrel; Component B: 1kg/ bottle;

    l Component A: 5 kg/barrel; Component B: 5kg/ bottle;

    l A+B double tube package, 50ml/ bottle

    l A+B double tube package, 400ml/ piece

    Please don't order directly, if you have any doubts, welcome to talk more with us.+8618321208486

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