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
PenelopeBrowne
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
how to learn to platic injection molding
ValentineEden
PenelopeBrowne
Release Time:
2024-05-14 03:32:18
Learning plastic injection molding involves understanding both the theoretical and practical aspects of the process. Start by studying the basics of polymers and how plastics behave when heated and cooled. Next, explore the machinery involved, including injection molding machines, dies, and cooling systems. Online courses and tutorials can provide foundational knowledge. Hands-on experience is crucial, so consider workshops or internships in manufacturing facilities. Networking with professionals in the field through seminars or industry associations can provide insights and opportunities to learn. Finally, continually experimenting and staying updated with the latest technologies and materials in injection molding will enhance your skills over time.
0
Q
what is low density polyethylene composed of
RitaClare
PenelopeBrowne
Release Time:
2024-05-10 11:26:51
Low density polyethylene (LDPE) is a thermoplastic polymer made from the monomer ethylene through a process known as free radical polymerization at high pressure. It is characterized by its soft, flexible nature, making it ideal for products like plastic bags, containers, and tubing. LDPE contains long-chain polymer units with significant branching, which reduces the density and makes the material less rigid and more pliable compared to its counterpart, high-density polyethylene (HDPE). Its properties make it a popular choice for applications requiring flexibility and durability.
0
Q
is polypropylene ok for dogs
UptonBobby
PenelopeBrowne
Release Time:
2024-05-09 12:59:41
Polypropylene is generally considered safe for dogs. This synthetic plastic is used in everything from toys to containers, and its chemical composition doesn’t easily degrade into harmful substances. However, while it might not be toxic, it’s essential to monitor a dog’s interaction with polypropylene items to prevent choking or intestinal blockage risks. Chewing on hard plastic can also damage a dog’s teeth. When choosing products made of polypropylene for your pet, opt for those specifically designed for dogs, ensuring they are size-appropriate and free from small parts that could be ingested. In summary, polypropylene is safe around dogs, but pet owners should supervise use and prioritize pet-specific items for safety.
0
Q
perforated hdpe pipe specifications
JuliaDonne
PenelopeBrowne
Release Time:
2024-05-07 14:15:15
Perforated HDPE (High-Density Polyethylene) pipes are designed primarily for subsurface drainage systems. They come in various sizes, but common specifications include wall thickness, diameter, and perforation patterns. The diameter can range from small (2 inches) to large (48 inches or more for industrial applications), and the wall thickness varies depending on the diameter and application, ensuring structural integrity and performance under load. Perforation patterns are crucial; they are typically circular holes arranged in rows to maximize water intake while preventing soil and debris from entering the system. ASTM F405 and ASTM F667 are standard specifications guiding the manufacturing and installation of perforated HDPE pipes, ensuring they meet quality and performance criteria for different environments. These pipes are favored for their durability, resistance to corrosion, and flexibility, making them ideal for drainage in agriculture, residential, and highway projects.
0
Q
does yarn shrink in the dryer
NydiaKeats
PenelopeBrowne
Release Time:
2024-04-29 12:35:15
Whether yarn shrinks in the dryer depends on its material composition. Natural fibers like wool are prone to shrinking and felting with heat and agitation. Conversely, synthetic fibers such as acrylic or polyester are more resistant to shrinking but can melt or deform at high temperatures. Cotton and other plant-based yarns can also shrink, particularly on their first wash. To avoid unwanted changes, it’s recommended to check the yarn’s care label and, if in doubt, air dry or use a low heat setting. Pre-washed or superwash yarns are treated to minimize shrinkage but should still be handled according to the manufacturer’s instructions.
0
Q
what is the origin of polyester
VickyAldington
PenelopeBrowne
Release Time:
2024-04-27 15:28:13
Polyester is a synthetic fiber derived from coal, air, water, and petroleum. Developed in the 20th century, its invention is attributed to British chemists John Rex Whinfield and James Tennant Dickson in 1941, who patented the first polyester fiber called Terylene. Polyester quickly gained popularity due to its high strength and elasticity, resistance to wrinkles and shrinkage, and quick-drying properties. Over the years, it has become an essential material in the textile industry, utilized in clothing, home furnishings, and various industrial applications. The creation of polyester marked a significant advancement in polymer chemistry, leading to the development of numerous synthetic fibers that have since transformed the fabric industry.
0
Q
friction head loss in hdpe pipe
HuberyDryden
PenelopeBrowne
Release Time:
2024-04-26 03:15:08
Friction head loss in HDPE (High-Density Polyethylene) pipes occurs due to the resistance encountered by fluid flow within the pipe. This resistance is influenced by several factors including the pipe’s diameter, roughness, length, and the fluid’s velocity and viscosity. HDPE pipes, known for their smooth interior surface, typically exhibit lower friction head losses compared to other materials, which enhances their efficiency for transporting water. Calculating these losses accurately is crucial for system design and can be done using the Darcy-Weisbach equation or the Hazen-Williams equation, with specific coefficients applicable to HDPE. It’s essential for engineers and designers to consider these losses during the planning phase to ensure optimal pipe size selection and pump requirements, thus minimizing energy consumption and operational costs.
0
Q
how much pigment to put in with resin
BlakeKellogg
PenelopeBrowne
Release Time:
2024-04-22 09:37:23
When adding pigment to resin, a general guideline is to use a pigment-to-resin ratio of approximately 6% by weight, which translates to around 1 ounce of pigment per 1 pound of resin. However, the exact amount can vary based on the type of pigment (powder, liquid, paste) and the desired opacity of the final product. Liquid pigments tend to require less, as they’re more concentrated, while powders might need a bit more. It’s crucial to start with a small amount and gradually add more, thoroughly mixing between additions to achieve the desired color while maintaining the resin’s structural integrity. Overpigmenting can affect the resin’s cure and final properties. Always refer to the pigment manufacturer’s guidelines and conduct a small test before scaling up your project.
0
Q
polyester in chinese
ScottSnow
PenelopeBrowne
Release Time:
2024-04-16 06:27:58
Polyester in Chinese is called 聚酯 (pinyin: jù zhǐ). It’s a category of polymers that contain the ester functional group in their main chain. As a specific material, it most commonly refers to a type called polyethylene terephthalate (PET). In China, the production and use of polyester have significant importance due to the country’s massive textile industry. Polyester is favored for its durability, resistance to stretching and shrinking, and its quick-drying properties, making it a popular choice in the manufacture of clothing, home furnishings, and industrial applications. Additionally, with the global push towards sustainability, recycled polyester, made from plastic bottles and other PET products, is gaining traction in China, aligning with the country’s efforts to combat plastic waste and reduce environmental impact. The versatility of polyester, both in its virgin and recycled forms, underscores its continued relevance in various sectors, highlighting its economic and ...
0
You May Like
Blue 15:4
TITANIUM TETRACHLORIDE
1250 Mesh High-Quality Calcium Carbonate Powder Imported from Vietnam
China manufacturer direct wholesale plastic cornstarch lunch box biodegradable 450ml rectangle food container
Latex paint, low-grade anti-corrosion paint special coating grade talcum powder
Q&A
•
how to weld polypropylene plastic
•
difference between acrylic and polyester yarn
•
what does titanium dioxide do to the human body
•
moisture regain of polyester
•
can you use drano in pvc pipes
Popular Information
•
Basic knowledge and application of talc and calcium carbonate
•
This Week, the Titanium Tetrachloride Market Remained Strong (January 1-5)
•
On February 28th, the Titanium Tetrachloride Market Operated Steadily
•
The talcum powder industry is expanding rapidly in our country.
•
Thousand-yuan memory pillow lost its memory after half a year of use. The sponge was filled with talcum powder
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