15 Years Manufacturer 32″ rubber glove with cotton linning-rough finish Seychelles Factory

FAQ Content

Contact: Mr Lewis
Email: lewis@goodeggtraymachine.com
Website: http://www.goodeggtraymachine.com
Skype: lewis15863824208
Mob:+86-15863824208
QQ: 279684828
Gtalk: lewis15863824208@gmail.com
Yahoo Messenger:lewis15863824208@yahoo.com

We are the professional manufacturer of Pulp moulding Machine and EPE Foam Extruder Line etc in China.

This machine is a deeply processing equipment of EPE foam sheet/film products, mainly used for the tectorial surface of EPE foam sheet/film. The material can be PE film, plated Aluminum film plastic-coated. Paper plastic-coated fabric and so on.
The machine can increase intensity, waterproof smooth of foam sheet, and can print character, picture, improving the products, is widely used for the packing of box lining, life vest, wooden floor cushion. Car Havelock, Motor adumbral cushion, electronic appliance, high-top china and so on.

Applications:
1) Cushioning and packaging materials for electronic equipment, potteries and
glassware
2) Construction-roof insulation, expansion joints, anti-vibration in roofs, walls,tunnels,
bridges and highways
3) Insulation of window, air conditioner ducting, industrial chillers, cold storage,
refrigerated vans, industrial refrigerators and water pipes
4) Education materials, decorative materials
5) Sports mats, such as wrestling, judo, gym and exercise mats
6) Body protective materials, such as helmets, leg and thigh guards, arm, elbow and
shoulder pads, life saving jackets, and gloves
EPE foam sheet machine can make different foam sheet width and thickness according to customer requirement.

Meanwhile, it can also make foam pipe, foam net, foam rod, foam profile and so on through changing mould and machine parts.
EPE foam sheet machine can make different foam sheet width and thickness according to customer requirement.

Contact: Mr Lewis
Email: lewis@goodeggtraymachine.com
Website: http://www.goodeggtraymachine.com
Skype: lewis15863824208
Mob:+86-15863824208
QQ: 279684828
Gtalk: lewis15863824208@gmail.com
Yahoo Messenger:lewis15863824208@yahoo.com

We are the professional manufacturer of Pulp moulding Machine and EPE Foam Extruder Line etc in China.

https://www.iitutor.com
General safety precautions when using sulfuric acid
Always wear safety goggles
• Wear protective gloves and a laboratory coat
• Work near a ready supply of running water
• Have a supply of sodium carbonate or sodium bicarbonate at hand to neutralise any spills
• For regular use store the acid in glass bottles no larger than one litre
• Try to avoid dribbling acid down the outside of the bottle and if you do, wipe it off carefully with wet tissue
• Always place the storage bottle in a drip tray to ensure that any drips do not contact the bench or shelf
• When diluting concentrated acid, always add the acid to the water and do slowly
How can it be safely stored?
• train fully the person involved in the storage of sulfuric acid
• avoid storing the acid with water, chlorates, chromates, carbides, nitrates and powdered metals
• store in a cool, dry, well-ventilated area
• store away from sunlight and open flames
• refrain from storing in metal drums as hydrogen gas may result
• use dry chemical or carbon dioxide extinguishers when dealing with fire caused by sulfuric acid
Transport
The concentration of commercially available sulfuric acid is 98% and sulfuric acid cannot ionize. Therefore it does not attack iron and steel and can safely be stored and transported in steel containers or in steel tankers. Steel has the advantage of greater strength when compared with glass and plastic containers. However, diluted sulfuric acid contains hydrogen ions vigorously attacks metals such as iron and steel. Hence dilute acid must be stored in glass or plastic containers that make it more difficult to transport. When storing and transporting the acid in steel containers, care must be taken to avoid contamination with water, because that could set off a vigorous reaction between the acid and the container.
First-hand investigation—Reactions with sulfuric acid
Safety issues
Always wear safety glasses to avoid eye damage. If dilute sulfuric acid is spilt on the skin then wash it off with water. Concentrated sulfuric acid should only be used by the teacher. It can cause severe burns and generates considerable heat when it is added to water. Sulfuric acid should always be diluted by adding small volumes of the acid to large volumes of water with stirring.
Reactions to investigate
Oxidising agent
1 Test small samples of metals (e.g. Mg, Zn, Fe, Sn, Cu) with 2 mL volumes of cold and warm 2 mol L-1 H2SO4. Record your observations and write balanced equations for any reactions.
2 Teacher demonstration: the teacher can heat a granule of tin in a small volume of concentrated sulfuric acid using a hot water bath in a fume cupboard. To check whether sulfur dioxide is released, place a strip of filter paper soaked in acidified potassium dichromate at the mouth of the test tube. It will turn green if sulfur dioxide is present.
Dehydrating agent
Teacher demonstration: a spoon of sugar is placed in a large test tube. 1–2 mL of concentrated sulfuric acid is added. The tube is placed in a test tube rack in the fume cupboard. The sugar turns brown, then black as carbon forms. The heat released causes the water and acid to begin to vaporise.