Polyimide resin powder manufactured by Yangchen Tech is a high-performance polymer that is synthesized through a condensation reaction. Its unique molecular structure provides it with excellent resistance to high temperatures, chemicals, and radiation. Unlike traditional adhesives that degrade under extreme heat, polyimide resin powder maintains its integrity, making it the go-to choice for applications where durability under harsh conditions is non-negotiable.

Key Performance Characteristics Of Polyimide Resin Manufactured By Yangchen Tech

1. High-Temperature Stability: Polyimide resin powder exhibits minimal thermal expansion and retains its mechanical strength even when exposed to temperatures exceeding 500°F (260°C). This makes it ideal for bonding components in high-temperature environments.

2. Chemical Resistance: The polymer's aromatic structure provides excellent resistance to chemicals, including acids, bases, and solvents, ensuring that bonds remain intact even in corrosive environments.

3. Electrical Insulation: With its low dielectric constant and high volume resistivity, polyimide resin powder is also widely used in electrical and electronic applications where insulation is critical.

4. Adhesion and Flexibility: Despite its rigidity at high temperatures, polyimide resin powder can be formulated to provide excellent adhesion to a variety of substrates, including metals, ceramics, and glass.

Technical Indicator

Applications of Polyimide Resin Powder

The versatility of polyimide resin powder manufactured by Yangchen Tech is evident in its wide range of applications:

• Aerospace Industry: Used in bonding components of aircraft and spacecraft where exposure to extreme temperatures is common.
• Electronic Manufacturing: Employed in the production of printed circuit boards (PCBs), connectors, and other electronic components that require high thermal stability.
• Automotive Industry: Utilized in the manufacturing of heat-resistant adhesives for engine components and exhaust systems.
• Industrial Coatings: Applied as a protective coating in high-temperature industrial environments to prevent corrosion and wear.

The Advantages of Using Polyimide Resin Powder

Compared to traditional adhesives, polyimide resin powder offers several advantages:

• Outstanding Thermal Durability: Unlike epoxy or silicone-based adhesives, polyimide resin powder does not soften or degrade at high temperatures.
• Long-Term Reliability: Its chemical and thermal stability ensures that bonds remain strong and intact over time, reducing the need for frequent repairs or replacements.
• Design Flexibility: Can be formulated to meet specific application requirements, offering a tailored solution for unique challenges.

Polyimide resin powder, with its  thermal stability and versatility, plays a central role in advanced composites and high-temperature fuel cells.For any application where high-temperature stability and reliability are paramount, polyimide resin powder is the premier choice. Its unique combination of thermal, chemical, and mechanical properties makes it an indispensable material for manufacturing. Whether you're seeking to improve the performance of your current products or exploring new design possibilities, polyimide resin powder is the solution you need. Welcome Inquiry!

As environmental regulations become increasingly stringent and the concept of green manufacturing becomes more popular, Waterborne Free-Formaldehyde Binder is gradually becoming the preferred material in many industries. From textiles, construction to composite materials, users are paying unprecedented attention to the safety, performance stability and environmental friendliness of products. So, what kind of waterborne formaldehyde-free binder can truly achieve both "safety and efficiency"?

Safety comes from the innovation of formula design

Traditional adhesives often contain free formaldehyde, which not only poses a threat to the health of operators, but also continues to release during terminal use, affecting indoor air quality. True water-based formaldehyde-free adhesive completely abandons formaldehyde and its derivatives in the selection of raw materials and synthesis process, and adopts natural or low-toxic cross-linking agents to significantly reduce the emission of harmful substances.

High-efficiency bonding force guarantees industrial application performance

Many users are worried that water-based formaldehyde-free adhesives will sacrifice bonding strength or water resistance. In fact, with the continuous breakthroughs in polymer synthesis technology, modern water-based formaldehyde-free systems have been designed with stable cross-linking structures and moderate molecular weight water-based emulsions. While maintaining excellent bonding properties, they also have excellent heat resistance, washability and aging resistance, which fully meet the needs of industrial mass production.

Performance advantages include:

- Excellent dry and wet bonding strength

- Good water and weather resistance

- Applicable to a variety of materials (such as cotton, paper, foam, wood, non-woven fabrics, etc.)

Green production and environmental compliance double blessing

Water-based formaldehyde-free adhesive uses water as a dispersion medium, Volatile organic compound (VOC) content is extremely low, and there is almost no irritating odor during use, reducing the construction workshop's dependence on ventilation and protection. More importantly, its waste liquid treatment is simpler, which helps companies control costs while meeting environmental compliance standards.

In the fields of textiles, building decoration and paper products, more and more brands are taking "Environmentally friendly adhesive solutions" as an important part of the green supply chain.

Widely applicable to a variety of industries

A truly efficient water-based formaldehyde-free adhesive should not be limited to a certain type of material, but should have good adaptability to adapt to the diverse needs of different industries for materials and performance. The following are its typical application scenarios:

- Textile industry: used for non-woven fabric lamination, fabric coating, printing bonding, etc.

- Woodworking industry: low formaldehyde environmental protection demand scenarios such as furniture veneer and floor lamination

- Architectural decoration: sound-absorbing panels, foam board bonding

- Paper product packaging: green adhesive solutions for children's books, food packaging, and environmentally friendly paper bags

An excellent water-based formaldehyde-free adhesive must not only withstand the test of actual use in terms of performance, but also have sustainable raw material supply, stable batch control and professional technical services. As an industry-leading supplier of water-based resins and adhesives, LINTEC has always been committed to providing global customers with solutions that combine safety, stability and environmental performance.

We provide a variety of water-based formaldehyde-free adhesive product series suitable for different scenarios, which are widely used in textiles, packaging, building materials and other fields, helping customers build a green product system from the source.

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With the advent of the information technology revolution, the integrated circuit industry has developed rapidly. The increasing integration density of electronic systems leads to higher power density and greater heat generation from electronic components and the system as a whole. Therefore, effective electronic packaging must address the heat dissipation issues of electronic systems. 

In this context, ceramic substrates, with their excellent heat dissipation performance, have seen a rapid surge in market demand. Particularly for aluminum nitride (AlN) ceramic substrates, despite their significantly higher prices compared to other substrates, they remain in short supply, even to the point of being "hard to find." Why is this?

The reasons are simple. The author believes there are three main points:①Superior performance, worth the price②Challenging production process③Rapid market growth.

Today, we will delve deeper into these three aspects to better understand AlN ceramic substrates.

01 Outstanding Thermal Conductivity

First, ceramic packaging substrates primarily rely on the material's high thermal conductivity to transfer heat away from the chip (heat source) and facilitate heat exchange with the external environment. For power semiconductor devices, packaging substrates must meet the following requirements:

High thermal conductivity to meet heat dissipation needs.

Excellent heat resistance to withstand high-temperature applications (above 200°C).

Matched coefficient of thermal expansion (CTE) with chip materials to reduce thermal stress in packaging.

Low dielectric constant for high-frequency performance, reducing signal transmission delay and improving speed.

High mechanical strength to meet the mechanical performance requirements during packaging and application.

Good corrosion resistance to withstand strong acids, alkalis, boiling water, organic solvents, etc.

Dene structure to meet the hermetic sealing requirements of electronic devices.

So, how does aluminum nitride perform? As a ceramic substrate material,  AlN ceramic parts boast high thermal conductivity, high strength, high resistivity, low density, low dielectric constant, non-toxicity, and a CTE matching Si. These properties make it one of the most promising high temperature ceramic materials.

02 Complex and Tedious Production Process

The production of AlN ceramic substrates is highly complex and tedious, primarily reflected in two aspects: the preparation of high-end AlN powder and the fabrication of the substrates. Let’s explore these two areas separately.

1. Aluminum Nitride Powder

The quality of almost all industrial ceramic products is heavily influenced by the raw material quality, and AlN ceramic substrates are no exception.

(1) Powder Preparation Methods

As a high-performance powder material, researchers worldwide continue to innovate to address technical challenges in existing processes while exploring new, more efficient preparation methods. Currently, the most widely used industrial methods are carbothermal reduction and direct nitridation, which are mature, simple, and yield high-quality products.

(2) Multiple Factors Affect Powder Performance

The performance of AlN ceramic products depends directly on the characteristics of the raw powder, particularly its most valuable property—thermal conductivity. Key factors influencing thermal conductivity include:oxygen and other impurity content,sintering density,microstructure.These factors are reflected in the AlN powder’s purity, particle size, and shape.

(3) Hydrolysis Sensitivity and the Need for Modification

Despite its excellent properties, AlN powder has a major drawback: it is highly prone to hydrolysis. In humid environments, it readily reacts with hydroxyl groups in water to form aluminum hydroxide, creating an alumina layer on the surface. This layer dissolves oxygen into the lattice, reducing thermal conductivity and altering physicochemical properties, complicating its application.

The current solution is to coat the aluminum nitride particles with a substance that isolates them from water, preventing hydrolysis. Methods to inhibit hydrolysis include:surface chemical modification,surface physical coating.

2. Substrate Fabrication

(1) Ceramic Substrate Forming

The primary method for preparing AlN ceramic substrates is tape casting.

(2) Critical Step—Sintering

Sintering is a crucial step in AlN substrate preparation.Pressureless sintering is the most common for AlN substrates due to its simplicity and low cost, but it typically requires high temperatures and sintering aids to achieve high performance.

The uniformity of sintering temperature in the furnace significantly impacts AlN ceramics. Research into temperature uniformity supports mass production, cost reduction, and commercialization.

For dense ceramic sintering, adding sintering aids is the most economical and effective method.These materials serve two purposes during sintering:

They react with surface Al₂O₃ to form liquid aluminates, promoting mass transfer via viscous flow. This adjusts particle contact angles, fills pores, and enhances densification.They react with oxygen, reducing lattice oxygen content.

In reducing atmospheres, sintering time and temperature must be carefully controlled to prevent AlN reduction. Neutral atmospheres (e.g., N₂) avoid this issue, making them preferable for producing high-performance AlN ceramics.

About Xiamen Juci Technology Co., Ltd.

Xiamen Juci Technology Co., Ltd. is a high-tech enterprise specializing in the research, development, production, and sales of high-performance ceramic materials. As a leading AlN substrate manufacturer, the company is committed to providing high-quality aluminum nitride series products and solutions for industries such as electronics, semiconductors, and aerospace. With exceptional quality and service, Xiamen Juci has earned widespread trust from global customers.

Media Contact:
Xiamen Juci Technology Co., Ltd.

Phone: +86 592 7080230
Email: miki_huang@chinajuci.com
Website: www.jucialnglobal.com

I. Definition of Carboxylated Polyvinyl Alcohol (CPVA)
Carboxylated polyvinyl alcohol is a hydrogen-modified polymer obtained through a carboxylation reaction based on polyvinyl alcohol (PVA). CPVA  has typically higher solubility and better performance than unmodified PVA.

II. Functions of Carboxylated Polyvinyl Alcohol

1. Plasticizer
   CPVA can be used as a plasticizer to improve the processing properties and flexibility of plastics. It is often used in the production of soft plastics, coatings, and rubber products.

2. Adhesive
   CPVA can act as an adhesive, forming strong bonds between different materials. For example, when used as glue, it can bond materials such as paper, wood, and plastic together.

3. Lubricant
   CPVA can function as a lubricant, reducing friction on contact surfaces and extending the lifespan of materials. It is commonly used in industrial applications such as metalworking, textile manufacturing, and plastic processing.

III. Applications of Carboxylated Polyvinyl Alcohol

1. Packaging Materials
   CPVA is used in manufacturing food packaging materials, such as wrapping paper, plastic films, and straws. This polymer is not only safe and environmentally friendly but also provides excellent flexibility and water resistance, offering effective protection for food packaging.

2. Paper Coating
   CPVA is used to coat paper, enhancing its strength and water resistance. It is commonly applied in the production of books, magazines, and other paper-based products.

3. Medical Field
   CPVA is used to manufacture medical products, such as sutures and artificial cartilage. It has good biocompatibility and poses no adverse effects when in contact with human tissues, ensuring the safety and reliability of medical materials.

Conclusion
Carboxylated polyvinyl alcohol is a multifunctional material with applications as a plasticizer, adhesive, and lubricant. It is widely used in packaging materials, paper coatings, and the medical field.

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EVOH (Ethylene Vinyl Alcohol Copolymer) is considered to be a more environmentally friendly material, mainly in terms of its advantages in reducing food waste, prolonging product freshness, and in the recycling process.EVOH's gas barrier properties are excellent, and it can effectively prevent oxygen, water vapor, and other substances from entering into the package, thus prolonging the shelf-life of the food, and reducing food spoilage and waste. This feature makes EVOH particularly important in food packaging, and can significantly reduce the environmental burden caused by food expiration or spoilage.

In addition, EVOH has good recyclability, and although its recyclability is not as good as that of materials such as PE (polyethylene) and PP (polypropylene), it can be used in combination with these materials to take advantage of the strengths of both materials; PE and PP have better mechanical strength and chemical resistance, while EVOH provides a better barrier to gases. Through composite use, this multi-layer packaging material ensures packaging functionality while allowing for easier disposal during recycling, helping to reduce resource waste.

What's more, EVOH is produced in a relatively environmentally friendly manner and does not release harmful substances during its use. Compared to other traditional plastic materials, the use of EVOH reduces the need for chemical additives, further minimizing the impact on the environment. Therefore, EVOH is playing an increasingly important role in promoting green packaging and circular economy, becoming an environmentally friendly and sustainable packaging material.

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• Polyvinyl butyral (PVB)https://www.elephchem.com/https://www.elephchem.comhttps://www.elephchem.comwww.elephchem.comhttps://www.elephchem.compolyvinyl-butyral-resin is a condensation product of polyvinyl alcohol (PVAL) and butyraldehyde, appearing as a white powder. It is soluble in alcohols (e.g., methanol, ethanol, butanol), ketones (e.g., butanone, cyclohexanone), chlorinated hydrocarbons (e.g., chloroethane, dichloroethane), and aromatic hydrocarbons (e.g., benzene, toluene, xylene), and is highly soluble in alcohol-benzene mixed solvents. PVB exhibits excellent compatibility with plasticizers such as phthalate and sebacate esters, as well as with nitrocellulose, phenolic resin, and epoxy resin. It possesses high transparency, excellent cold resistance, impact resistance, and UV resistance, along with strong adhesion to metals, glass, wood, ceramics, and fiber products.

   

  • PVB is typically manufactured by first dissolving PVAL in water, then adding butyraldehyde and a catalyst (e.g., hydrochloric or sulfuric acid) under stirring, maintaining a reaction temperature of 15–50°C for the acetalization process. The resulting product is washed, centrifuged, and dried to obtain the final product. PVB is primarily used in the production of interlayer films for laminated glass (e.g., safety glass, bulletproof glass), as well as in coatings (e.g., phosphating primers, metal coatings, wood coatings, and vacuum metallization coatings) and adhesives.

     

    • Currently, global PVB resin production is concentrated in the United States, Western Europe, and Japan, with the U.S. being the largest producer and consumer. China's PVB industry began in the 1950s but developed slowly until breakthroughs in ceramic decals and vacuum aluminum plating applications during the Seventh Five-Year Plan (1986–1990), which spurred industry growth. The primary use of PVB resin is as a high-viscosity raw material for PVB films, which serve as interlayers in safety glass. Additionally, it is widely used in coatings, adhesives, ceramic decals, and aluminum foil paper.

       

      • PVB films are specialized products for manufacturing safety glass and bulletproof glass. Safety glass, made by sandwiching a PVB film between two layers of ordinary glass, offers excellent low-temperature impact strength, flexibility, light transmittance, weather resistance, sound insulation, and UV blocking. When subjected to strong external impact, the PVB film absorbs energy, preventing glass breakage or fragmentation injuries. PVB-laminated safety glass also features high transparency, water resistance, and aging resistance, with usability down to -60°C. It can also replace acrylic as a transparent material. Multi-layer lamination of glass and PVB films enables the production of military-grade bulletproof glass.

        

         

        • PVB contains hydroxyl, acetyl, and aldehyde groups, giving it strong adhesive properties, making it suitable for various adhesives such as glass adhesives, metal adhesives, enameled wire adhesives, heat-seal adhesives, transfer label adhesives, film adhesives, pressure-sensitive adhesives, and others.

           

          • With rising living standards, demand for filter-tipped cigarettes has surged. To protect public health, health authorities mandate 100% tipping for premium cigarettes, leading to a sharp increase in tipping paper usage and, consequently, PVB adhesive consumption.

             

            • Furthermore, PVB resin can be blended with other resins to enhance bonding performance, creating adhesives for diverse applications, including wood, ceramics, metals, plastics, and leather.

               

              • Due to its high bond strength, cold resistance, oil resistance, wear resistance, and corrosion resistance, PVB is widely used in wood coatings, metal coatings, metal primers, metal inks, foil coatings, vacuum metallization coatings, concrete coatings, waterproof coatings, leather coatings, and glossy surface protective coatings.

                 

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