This epoxy resin toughener series includes CSR, CTBN and acrylic core-shell modifiers. CSR is core-shell rubber powder, CTBN is carboxyl-terminated butadiene nitrile reactive liquid rubber, and acrylic core-shell is structured acrylic copolymer powder. These products can form dispersed micro-phase domains inside cured epoxy network, absorb impact energy and block crack expansion. They improve toughness without severe decline of modulus and heat resistance. Widely used in epoxy structural adhesiv

Product Detail

Product Detail PageChemical IdentityCSR is core-shell rubber powder with elastic rubber core and epoxy-compatible shell. CTBN is reactive liquid nitrile butadiene rubber with carboxyl terminal groups, which can chemically bond with epoxy matrix during curing reaction. Acrylic core-shell toughener adopts crosslinked acrylic elastic core and compatible outer shell. Three types of tougheners can be selected individually or compounded together, compatible with most bisphenol A, bisphenol F and modified epoxy resin systems.

Key PerformanceIt greatly enhances fracture toughness and impact strength of cured epoxy. It suppresses crack propagation under mechanical shock and thermal cycling. CSR and acrylic core-shell powder maintain good viscosity control of epoxy formula. CTBN improves peel strength and damage tolerance of adhesive joints. Balanced formulations retain high modulus, thermal performance and electrical insulation. It reduces cracking risk for thick-section potting and high-load CFRP composite parts.

ApplicationsSuitable for epoxy structural adhesive, carbon fiber reinforced polymer (CFRP) composite, electronic component potting and encapsulation. Typical end products: industrial structural bonding adhesives, aerospace composite parts, automotive carbon fiber components, high-performance electronic potting compounds. It fits formulations requiring high toughness and reliable structural performance.

Storage & HandlingStore powder grades in sealed bags and liquid grades in sealed containers, placed in cool, dry and ventilated warehouse. Recommended storage temperature 10-30℃. Avoid direct sunlight, heat sources and high humidity. Wear proper PPE to prevent skin and eye contact. Reseal containers tightly immediately after opening to avoid moisture contamination. Do not stack pallets excessively high.

Why Choose SupplierWe supply CSR, CTBN and acrylic core-shell epoxy resin tougheners for adhesive, composite and potting manufacturers. Complete TDS and MSDS documents are available for export. Bulk shipment and small trial orders are supported. Our tougheners help overseas factories produce high-toughness epoxy structural adhesives, CFRP composites and potting compounds.

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Epoxy Resin Toughener, CSR/CTBN/Acrylic Core-Shell for Epoxy Structural Adhesive CFRP Potting

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Jishengya Technology

Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.