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
DerrickSally
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
coefficient of friction between hdpe and rubber
MeredithMill
DerrickSally
Release Time:
2024-05-08 06:18:53
The coefficient of friction (COF) between High Density Polyethylene (HDPE) and rubber can vary significantly based on the types of rubber and the conditions (e.g., surface roughness, presence of lubricants, temperature). Generally, HDPE, known for its low frictional properties, will have a COF when paired with rubber ranging from 0.2 to 0.6 under dry conditions. The specific rubber type (e.g., natural rubber, nitrile, silicone) can influence this range due to differences in hardness and surface characteristics. Environmental factors, like temperature and humidity, also impact the frictional behavior. For precise engineering applications, direct testing under relevant conditions is recommended to obtain an accurate COF for the specific HDPE-rubber pairing in question.
0
Q
what is warmer nylon or polyester
BarnettGarden
DerrickSally
Release Time:
2024-04-27 17:16:43
When comparing warmth between nylon and polyester, it’s crucial to understand that both materials are synthetic but have different properties. Polyester tends to be slightly more insulating and thus can be considered warmer than nylon. This difference is due to polyester’s tighter weave and its hydrophobic nature, which means it repels water more effectively than nylon. Water conducts heat away from the body, so by repelling moisture, polyester keeps you warmer in cold conditions. However, the warmth level also depends on the fabric’s weight and knit or weave density. For outdoor activities in cooler weather, garments made from polyester might be preferable for their warmth and moisture-wicking properties. Nonetheless, high-quality, specially designed nylon fabrics can also provide adequate warmth and comfort. Each material has its unique advantages and the choice between nylon and polyester should be based on the specific requirements of the activity and personal pre...
0
Q
duratec hdpe pipe
FreeScan_qtMt
DerrickSally
Release Time:
2024-04-25 14:27:46
Duratec HDPE pipe is a high-density polyethylene piping system known for its durability, flexibility, and resistance to chemicals and corrosion. It is widely used in various industries, including municipal water supply, wastewater management, mining, and agriculture, due to its robustness and longevity. The material’s flexibility makes installation easier, allowing for cost-effective laying and reduced need for joints, which minimizes leakage risks. Its chemical resistance makes it ideal for transporting hazardous materials safely. However, proper installation and handling are key to maximizing its benefits, as incorrect installation can lead to system failures.
0
Q
characteristics of polypropylene plastic
MyrnaBethune
DerrickSally
Release Time:
2024-04-25 09:46:20
Polypropylene plastic, a thermoplastic polymer, is known for its unique combination of properties, making it a highly versatile material. It is characterized by its exceptional chemical resistance, allowing it to withstand acids, bases, and solvents, making it ideal for containers and piping. Its low density contributes to its lightweight nature while not compromising on strength, making polypropylene favored for automotive and textile applications. The material also boasts a high melting point, around 160°C, which means it can be used in applications that require sterilization at high temperatures. Furthermore, polypropylene is resistant to fatigue, essential for making living hinges such as those on flip-top bottles. It is also relatively stiff and has good resistance to electrical conductivity, expanding its use to various fields. However, it is prone to UV degradation; hence, additives are often used to improve its resistance to sunlight. Overall, polypropylene is celebrated for it...
0
Q
pvc pipe how to build a homemade kayak launch
HumphreyRaman
DerrickSally
Release Time:
2024-04-18 08:31:24
Building a homemade kayak launch using PVC pipe involves designing a simple, cost-effective structure to ease launching and docking. Firstly, gather materials: PVC pipes (2-inch diameter is durable and versatile), PVC joints, PVC glue, and possibly a non-slip surface material like outdoor carpet or rubber matting. Step 1: Design your launch’s dimensions based on your kayak’s length and width, ensuring stability in the water. A basic frame could include two parallel sides with crossbars for strength. Step 2: Cut the PVC pipes to the required lengths using a saw. Step 3: Assemble the frame using PVC joints. For a kayak launch, a simple rectangular or A-frame design could work well. Use T-joints for connections and ensure the structure’s base is wide enough for stability. Step 4: Apply PVC glue at each joint to secure the structure. Step 5: Attach a non-slip surface to the area where the kayak will rest, ensuring safe entry and exit from the kayak. Always test your laun...
0
Q
are all olives in caustic soda
EdenCowper
DerrickSally
Release Time:
2024-04-16 09:44:08
Not all olives are treated with caustic soda, but it is a common practice in the preparation of many types of olives. Caustic soda, or sodium hydroxide, is used primarily in the debittering process for olives, helping to remove the naturally bitter compound called oleuropein. This process significantly shortens the otherwise lengthy natural fermentation or curing period that olives need to become palatable. However, there are traditional and artisanal methods that do not use caustic soda, relying instead on natural fermentation over several months. These methods are typically used for organic and specialty olives, offering a different flavor profile and texture when compared to those treated with caustic soda. Nonetheless, after processing, olives are thoroughly washed to remove any traces of the chemical before packaging for consumption.
0
Q
what is pigment dyeing
GustaveAlfred
DerrickSally
Release Time:
2024-04-10 07:40:10
Pigment dyeing is a coloring process distinct from conventional dyeing methods, as it involves binding color pigments directly onto the fabric’s surface using binders and heat or pressure, rather than having the dye chemically bond with the fabric. Compared to traditional dyeing techniques that penetrate the fiber, pigment dyeing coats the surface, resulting in vibrant colors that can be applied to virtually any type of fabric. This method is especially popular in the fashion and home decor industries for its versatility and the unique vintage or washed look it can afford textiles. However, it’s worth noting that fabrics colored with pigment dyes may have a stiffer hand feel and can show more wear or fade over time compared to those dyed with direct or reactive dyes.
0
tags:
Edits:
0
Number of entries:
0
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