Service
About Us
Cross Border Warehousing
Expo Services
Help
Supplier
Supplier Service
Supplier Center
Supplier Register
Cart
FAQ
Contact Us
English
简体中文
English
Pусский
Products
Products
Suppliers
Search
Post My RFQ
Sign in
/
Join
Home
TDD Mall
TDD Supermarket
Quality supplier
Virtual Reality Showroom
Intelligent Logistics
Cross BorderWarehousing
TransactionServices
IndustrialBig Data
Expo Services
Industry info
Q&A
Wiki
Company news
Corporate news
Domestic news
Menu
Sign in
Join
TDD Mall
TDD Supermarket
TDD Supermarket
Quality supplier
Virtual Reality Showroom
Intelligent Logistics
Cross Border</br>Warehousing
Transaction</br>Services
Industrial</br>Big Data
Expo Services
MaxwellGilbert
I'm a seasoned industrial engineer with a keen interest in machine learning. Here to share insights on latest industry trends.
Industry info
Wiki
Q&A
tags:
Edits:
0
Number of entries:
0
tags:
Edits:
0
Number of entries:
0
Q
critical surface tension of polypropylene
PaulJoule
MaxwellGilbert
Release Time:
2024-05-12 13:59:28
The critical surface tension of polypropylene (PP) is a measure of the highest surface tension of a liquid that can wet the polymer. It is crucial for understanding and predicting how PP will interact with other materials, especially in applications like coatings, adhesives, and printing. Generally, the critical surface tension of polypropylene is around 29-31 dynes/cm. This relatively low value indicates that PP has a somewhat hydrophobic surface, making it challenging to adhere to or print on without surface treatment. Techniques like corona treatment, plasma treatment, or the application of a primer are often used to increase the surface energy of PP, improving adhesion and wetting properties. Understanding this property is essential for engineers and designers who work with polypropylene to ensure the compatibility and efficacy of PP in various applications.
0
Q
injection molding part weight variation
BessAntonia
MaxwellGilbert
Release Time:
2024-05-12 07:37:14
Injection molding part weight variation can result from several factors, including material viscosity variations, inconsistent material feed, changes in processing conditions (temperature, pressure), and mold design inaccuracies. Material viscosity can vary with moisture content or material lot, affecting flow into the mold. Inconsistent material feed, possibly due to fluctuation in the material delivery system, can lead to variations in the amount of material injected each cycle. Processing conditions like temperature and pressure directly influence material behavior and filling patterns, causing weight differences if not precisely controlled. Lastly, mold design, particularly gate and runner system design, can affect how material fills the mold, leading to weight discrepancies. Addressing these variables through precise control and continuous monitoring is essential for minimizing part weight variation, thus ensuring consistent quality in injection molded parts.
0
Q
how to couple pvc pipe
NathanielPeggy
MaxwellGilbert
Release Time:
2024-05-09 23:53:53
Coupling PVC pipe involves using a connector piece known as a coupling and PVC solvent cement. First, ensure both pipe ends are clean and dry. Apply a liberal amount of PVC primer to both ends of the pipes and inside the coupling to prepare the surfaces. Once the primer dries, apply PVC cement in the same areas. Quickly insert the pipe ends into the coupling and hold for a few seconds to ensure a strong bond. It’s important not to move the pipes while the cement is setting. After about 15 minutes, the joint should be strong enough to handle, but it’s recommended to wait several hours before subjecting the joint to pressure. Using the correct size and type of PVC cement and primer is crucial for a leak-proof connection.
0
Q
plastic injection molding companies in usa
AstridJoel
MaxwellGilbert
Release Time:
2024-05-08 04:37:23
Plastic injection molding is a vital manufacturing process in the USA, contributing significantly to various industries such as automotive, healthcare, and consumer products. Companies specializing in this technology offer a wide range of services, including mold design, manufacturing, and production of complex and high-precision parts. Some of the leading plastic injection molding companies in the USA include Nypro Inc., a Jabil company, offering innovative healthcare solutions; Husky Injection Molding Systems, known for its high-performance systems; and Rodon Group, which prides itself on cost-effective, high-volume manufacturing. These companies maintain competitive edges through advanced technologies, custom solutions, and adherence to strict quality standards. Selecting a suitable partner depends on your project’s specific requirements, including material specifications, volume, and application.
0
Q
chemical properties of ldpe and hdpe
StaceyLambert
MaxwellGilbert
Release Time:
2024-05-03 05:10:30
Low-Density Polyethylene (LDPE) and High-Density Polyethylene (HDPE) are both thermoplastic polymers produced from ethylene. LDPE is characterized by its long branching chains, making it less dense and more flexible than HDPE. This structure gives LDPE a lower melting point, around 105-115°C, and it’s often used for plastic bags and containers where flexibility is desired. HDPE, on the other hand, has a more linear molecular structure, contributing to its higher density, strength, and resistance to heat and chemicals. HDPE has a melting point of about 120-130°C and is typically used in products requiring rigidity and durability, such as milk jugs and water pipes. Both polymers are resistant to moisture and most non-organic solvents, but LDPE is more prone to stress cracking under certain conditions compared to HDPE.
0
Q
how do i break in a polypropylene
EdisonRaymond
MaxwellGilbert
Release Time:
2024-05-01 06:15:02
Breaking in polypropylene, particularly relevant to items like martial arts weapons or plastic components, requires gentle and gradual conditioning. For items designed for impact, like martial arts training weapons, start with light, controlled contact against soft targets, gradually increasing intensity and hardness of the target over time. This method enables the polypropylene to adapt to stress without causing cracks or breaks. For other polypropylene products, ensure they are used within their designed stress limits and avoid sudden, extreme conditions. Conditioning through repetitive, incremental use is key to breaking in polypropylene successfully, allowing it to maintain durability and flexibility.
0
Q
caustic soda flakes exporters in india
MildredTrollpoe
MaxwellGilbert
Release Time:
2024-04-29 14:38:45
India is a significant player in the global chemical industry, with caustic soda flakes being one of its notable exports. Caustic soda flakes, or sodium hydroxide, play a crucial role in various industries, including paper, textile, detergent, and water treatment. Indian exporters of caustic soda flakes are known for their competitive pricing, quality assurance, and reliable supply chains. Companies like Tata Chemicals, Gujarat Alkalies and Chemicals Ltd, and Aditya Birla Chemicals are leading exporters. They adhere to international safety and quality standards, ensuring their products meet global demand efficiently. Businesses looking for caustic soda flakes suppliers from India should consider these factors for a successful partnership. It’s advisable to conduct thorough research and possibly visit the manufacturing plants to assess capabilities firsthand, ensuring a match with your requirements.
0
Q
do hdpe bottles have bpa’s
MickDutt
MaxwellGilbert
Release Time:
2024-04-28 12:19:12
HDPE, or High-Density Polyethylene, is a type of plastic commonly used for making bottles, particularly for milk, detergents, and shampoo. One of the key reasons for its widespread use is that it doesn’t contain Bisphenol A (BPA), a chemical found in some plastics that has raised health concerns due to its potential hormone-disrupting effects. Consequently, HDPE bottles are considered a safer choice for food and beverage storage. The absence of BPA in HDPE products makes them preferable, especially for consumers looking to minimize their exposure to potentially harmful chemicals. It’s important for consumers to check the recycling symbol on plastic products; HDPE is typically marked with a number 2 inside the recycling symbol.
0
Q
is polyester warm enough for winter
BarbaraLaurie
MaxwellGilbert
Release Time:
2024-04-24 04:55:22
Polyester is a synthetic fabric known for its durability, resistance to shrinking and stretching, and quick-drying properties. In terms of warmth, its effectiveness depends on the garment’s construction. Polyester can be woven into lightweight fabrics or designed as fleece, which is exceptionally warm. Polyester fleece is a popular choice for winter wear, as it traps heat very efficiently, making it suitable for cold weather. However, thin polyester fabrics without a designed insulation layer might not provide sufficient warmth in winter on their own. For optimal warmth, polyester is often layered or combined with other fabrics. It’s also worth noting that polyester is less breathable than natural fibers, which can be a disadvantage in certain winter conditions where moisture management is key.
0
Q
is lyocell like polyester
BlakeYule
MaxwellGilbert
Release Time:
2024-04-21 14:12:57
Lyocell and polyester are both popular fibers in the textile industry but differ significantly in their origin and properties. Lyocell, a form of rayon, is derived from wood pulp, making it a semi-synthetic fiber. This process is eco-friendly and sustainable, emphasizing the closed-loop system where most chemicals are recycled. As a result, lyocell is biodegradable and has a soft, breathable, and moisture-wicking nature that is gentle on the skin. On the other hand, polyester is a fully synthetic petroleum-based fiber, known for its durability, resistance to wrinkles, and quick-drying capabilities. However, while polyester is less environmentally friendly due to its non-biodegradable nature and the process of production, it’s widely used for its strength and easy maintenance. Therefore, although both materials are used in a wide range of clothing and textiles, they cater to different preferences regarding sustainability, comfort, and care requirements.
0
You May Like
XH-Y450 Cornstarch 450ml Bowl food box take out food container
Competitive price good quality takeaway food container 1700ml disposable plastic rectangular food box
Kelong Calcium Carbonate KD8
Xinweiye Heavy Calcium Carbonate 1500 Mesh
Wet ground sericite mica powder 1250 mesh
Q&A
•
how to solve silver streaks in injection molding
•
does bleach affect polyester
•
caustic soda on car paint
•
how does engine mount break
•
what is the best pigment for epoxy resin
Popular Information
•
Some wonderful uses of talcum powder
•
Quotation of talc powder in some areas of China on July 22, 2023
•
Hyundai to reduce network partners as part of “future proofing” plan
•
The difference between talc powder and calcium carbonate and their applications
•
Next Autopilot trial to test Tesla’s blame-the-driver defense
Links
made-in-china
echemi.com
eurocarparts.com
made-in-china
echemi.com
eurocarparts.com
made-in-china
echemi.com
eurocarparts.com
made-in-china
echemi.com
eurocarparts.com