Liquid Crystal Epoxy Resin stands out due to its unique combination of liquid crystal molecular order and epoxy resin properties, offering superior mechanical, thermal, optical, and electrical performance. It is particularly suited for high-performance, high-precision applications.
Key features of LCER
1. Liquid Crystal Properties
- Ordered Molecular Arrangement: LCER molecules exhibit a liquid crystalline state under specific conditions (e.g., temperature, pressure, or electric fields), with highly ordered molecular alignment (like crystals) while maintaining fluidity (like liquids). This order can be partially retained after curing.
- Anisotropy: Due to the ordered molecular structure, LCER displays anisotropic properties (mechanical, optical, or electrical), with performance varying significantly in different directions.
2. Superior Mechanical Properties
- High Strength and Toughness: The ordered molecular structure results in higher tensile strength, modulus, and fracture toughness compared to conventional epoxy resins.
- Fatigue Resistance: LCER's molecular structure enhances its ability to withstand cyclic stress, making it ideal for high-performance composite materials.
3. Excellent Thermal Properties
- High Thermal Stability: LCER typically has a higher glass transition temperature (Tg) and thermal decomposition temperature, offering superior heat resistance compared to standard epoxy resins.
- Low Thermal Expansion: The ordered liquid crystal structure reduces the coefficient of thermal expansion, ensuring dimensional stability for high-precision applications.
4. Electrical and Optical Properties
- Electrical Insulation: LCER retains the excellent electrical insulation properties of epoxy resins, making it suitable for electronic encapsulation and insulating coatings.
- Optical Anisotropy: The liquid crystal structure imparts unique optical properties, such as birefringence, which can be utilized in optical devices or display technologies.
5. Low Shrinkage and Processability
- Minimal Shrinkage: LCER exhibits extremely low volume shrinkage during curing (sometimes near zero), making it ideal for high-precision molding and microelectronics.
- Controllable Curing: The curing process and final material properties can be precisely tailored by adjusting the liquid crystal phase and curing agents.
6. Chemical Stability
- LCER inherits the chemical resistance of epoxy resins, offering excellent resistance to acids, alkalis, and solvents, suitable for harsh environments.
Due to its combination of liquid crystal and epoxy resin properties, LCER is used in:
· High-thermal-conductivity epoxy adhesive for PCB bonding
It can be used as a substrate material or coating material for PCBs, enhancing the PCB's heat resistance, mechanical strength, and electrical performance. Its low coefficient of thermal expansion helps reduce dimensional changes in the PCB during temperature variations, improving the PCB's reliability and stability.
· Epoxy adhesive for electronic packaging
Liquid crystal epoxy resin has excellent heat resistance, dielectric properties, and dimensional stability, making it suitable for encapsulating electronic components to protect them from environmental factors and ensure the normal operation of electronic devices. For example, in the encapsulation of integrated circuits, semiconductor devices, and similar applications, it provides reliable protection and insulation performance.
· Used for Chip Bonding
Underfill: During the chip packaging process, the gap between the chip and the substrate needs to be filled with a material to enhance the chip's mechanical strength and reliability. Liquid crystal epoxy resin, with its excellent flowability and bonding properties, can be used as an underfill material to fill the gap between the chip and the substrate. This ensures a strong bond between the chip and the substrate, improving the chip's resistance to impact and vibration.
Chip Attachment: Liquid crystal epoxy resin can be used to attach the chip to the substrate, securing the chip in place. Compared to traditional adhesives, liquid crystal epoxy resin offers higher bonding strength and heat resistance, ensuring that the chip remains firmly attached and does not loosen or detach during long-term use.
· Manufacturing Encapsulation Molds
Molding Dies: In the electronic encapsulation process, molds are used to form the encapsulation housing. Liquid crystal epoxy resin, with its excellent processability and dimensional stability, can be used to create encapsulation molds of various shapes and sizes. Molds made from liquid crystal epoxy resin offer high precision and excellent surface finish, meeting the stringent requirements of electronic encapsulation.
Potting Molds: In certain specialized electronic encapsulation processes, potting molds are used to encapsulate electronic components with liquid crystal epoxy resin. These molds require excellent sealing properties and high-temperature resistance to ensure that the liquid crystal epoxy resin is effectively potted into the electronic components without leakage or deformation during the curing process.
· Aerospace Applications
Composite Materials
Liquid crystal epoxy resin can be combined with reinforcing materials such as carbon fiber or glass fiber to produce high-performance composite materials. These composites offer high strength, high modulus, and excellent high-temperature resistance, making them suitable for manufacturing aircraft structural components, engine parts, missile casings, and more.
Adhesives and Coatings
In the aerospace sector, adhesives and coatings must meet stringent performance requirements. Liquid crystal epoxy resin, with its excellent bonding properties and corrosion resistance, can be used for structural bonding and surface coatings in aircraft, enhancing structural strength and corrosion resistance.
Technical Specifications of Liquid Crystal Epoxy Resin
| Index |
ITCE04 |
ITCE05 |
Test Method/Standard |
| Core Indicators |
| Purity |
≥85 |
≥85 |
Liquid Chromatography |
| Non-core Indicators |
| Epoxy Value |
≥0.56mol/100g |
≥0.3mol/100g |
GB-T1677-2008 |
| Melting Point (ºC) |
≥110 |
≥110 |
DSC |
| Solubility |
Easily soluble |
Easily soluble |
Balance weighing |
| Structure |
Biphenyl type |
Methylene type |
| Other Structures |
Aromatic ester type |
Technical Indicators of Cured Liquid Crystal Epoxy Resin
| Index |
ITCE04 |
ITCE05 |
Test Method/Standard |
| Core Indicators |
| Thermal Conductivity (W/(m·K)) |
0.4(APAB) |
0.5(APAB) |
ASTM-D5470 |
| Dielectric Constant |
<= 4 |
<= 4 |
GB/T 31838.6-2021 |
| Melt Viscosity (cps) |
<= 100 (190ºC) |
<= 100 (190ºC) |
Rotational Viscometer |
| Tg (ºC) |
≥ 170 |
≥ 170 |
DMA |
| 5% Thermal Decomposition Temperature (ºC) |
≥ 320 |
≥ 320 |
TG |
| Non-core Indicators |
| Tensile Strength |
≥ 50MPa |
≥ 60MPa |
ASTM-D882 |
| Young's Modulus |
≥ 1.5GPa |
≥ 2GPa |
ASTM-D882 |
Beijing Entrepreneur Science & Trading Co., Ltd. was established in the year 2001. We are focused on import and export business of high-quality specialty chemicals. Since its establishment, relying on diligent efforts, spirit of enterprising and professional services, the company has established extensive cooperation with world-famous chemical manufacturers and gained a good reputation in China chemical industry.
We have stable distribution cooperation with world leading suppliers from America, Europe, Japan and Taiwan. We are distributors of Ames Advantage Material, Novamet, Lanxess, Momentive, Potters, Rhodia, Roquette, Oerlikon Metco, Inovyn, KJ Chemical, Tokuyama, Mitsubishi Chemical, Chang Chun Group, etc.
Our products selling in China include Conductive Powder, Thermal Conductive Powder, Microwave Absorbing Powder, Acrylamide Functional Monomer and Special UV Monomer, Special Epoxy Resin, Mercaptan Curing Agent, Silane, Fumed Silica and Precipitated Silica, PVC Paste Resin, PVA, Carbon Black, Modified Starch, Photocatalyst, Formaldehyde Capture agent, Root Blocking Agent, Platinum Catalyst, Vinyl Silicone Oil, Surfactant, etc.
In 2014, the company entered the chemical export business. Based on our understanding of China chemical market, we select most qualified suppliers. We are able to source raw materials directly from factories. Most of our partners are the largest factory in China with over 20 years history. They have huge annual outputs, and hold ISO9001, ISO14001, GMP, KOSHER, HALAL, FDA, GSP, etc. certificates.
Our export products include Conductive Powder, Thermal Conductive Powder, Plant Extract, Inorganic Powder, Plasticizer, PVC Paste Resin, Silane, Flavors and Fragrances, Salen Catalysts and Ligands, Organic Intermediates, Pharmaceutical Intermediates.
We are proud to serve industries such as coating, ink, sealant, industrial, cosmetics, conductive powder, thermal conductive powder, pharmaceutical, flavor & fragrance, aroma, as well as many others.
We will support our customers in a continuous way in the following:
1. Timely feedback to inquiry within 24 hours
2. Pre-sales consultancy
3. Supply samples
4. Competitive price
5. Good packaging
6. Timely delivery
7. Small order is available
8. Good after sales services
9. Provide TDS, COA, commercial invoice, packing list and certificate of origin. Special requirements also could be discussed and met.
Can I request samples?
Yes, absolutely! We offer free samples of specified quantities. You only need to cover the freight charges.
Which documents are provided?
We provide essential documents such as Certificate of Analysis (COA), Technical Data Sheet (TDS), Material Safety Data Sheet (MSDS), and more upon request.
What is your Minimum Order Quantity (MOQ)?
Typically, our MOQ is one standard package. However, we understand the importance of testing before committing to a mass order, so we offer free samples for your evaluation.
How do you ensure the quality of your products?
We prioritize quality assurance through several measures:
1. Expert Staff: Our team comprises professionals with extensive experience in chemical products or related fields. They undergo comprehensive training before providing any quotations.
2. Sample Availability: We offer free samples or pre-shipment samples for new collaborations, ensuring that our commercial products match the specifications provided to customers.
3. Third-Party Inspection: Upon request, we can arrange Third-Party Inspections, such as SGS, to further validate the quality of our products before shipping.
How do I make payments?
Once you receive the Proforma Invoice (PI) along with our product specifications, you can proceed with payment. We accept various payment methods including Telegraphic Transfer (T/T), Letter of Credit (LC), and more.
What is your after-sales service like?
At Beijing Entrepreneur Science & Trading Co., Ltd., we prioritize fostering long-term relationships with all our customers. For every order, we ensure transparency and commitment by signing a legally binding sales contract. Should you have any doubts or concerns regarding our products or services, please do not hesitate to contact us. Your satisfaction and trust are our top priorities.
Can I use my own label or packaging?
Absolutely. If required, we can use labels or packaging according to your specifications and preferences. Your branding and packaging needs are important to us, and we'll ensure they are met to your satisfaction.
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