EVA-050 EVA material

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Shanghai
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TT OR LC
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Supply Capability:
20000 m²/month

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Product Description:

CONSTRUCTION:

Material: EVA Foam

TYPICAL PHYSICALPROPERTIES:

Thickness: 5mm

Hardness: 25, 38, 45, 60 degree

Temperature range: 20 degree below zero to 80

Jumbo Roll: 1m x 100m/100y

Cut Roll: As per customer’s requirements

Color: Black, white or other colors ascoustomer's requirements.

Features

moisture-proof      Shockproof

anti-corrosion       Sound insulation

Applications

Eva materials have many functions and competitive advantage:widelyused to make different shoes,slippers,packing productions,brush,mousepads,luggages and so on, it is waterproof,excelent elasticityUsed in slipper or sandalsproduce, packaging, sports euipment, foor mat, toys etc.

REMARKS:

1.    The data above are typical results and subject to change withoutnotice.

2.    Tolerance: Weight and Thickness: ±10%; Width: ±3mm;

Length: Cut Roll & LogRoll ±0.3m, Jumbo Roll ±0.5%.

3.    The products should be storedat room temperature and be kept away wet and/or heat source.

4.    It is essential, as with allpressure-sensitive tapes, that the surface to which the tape is applied must beclean, dry, and free of grease and oil.

5.    The users should take test anddo trial-application on the above products before coming into application so asto witness and ensure suitability for their special purpose and technique.


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Q:What is the relationship between the hardness and tensile strength of rubber pad?
The main factors affecting the tensile strength of rubber are: the main valence bond, intermolecular force and polymer chain flexibility of macromolecular chains. The relationship between tensile strength and structure of rubber: the intermolecular forces are large, such as polarity and rigid groups;
Q:What about the Poisson's ratio and modulus of elasticity of three yuan ethylene propylene rubber (EPDM)?
Three yuan ethylene propylene is ethylene, propylene and non conjugated diene three copolymer. Diene has a special structure, only one of the two keys to copolymerization, unsaturated double bond, mainly as the chain. Another unsaturated polymer will not become the main chain and will only become side chains. The main polymer chain of three yuan ethylene propylene is completely saturated. This property allows three yuan ethylene propylene to resist heat, light, oxygen, especially ozone. Three yuan propylene is essentially non-polar, resistant to polar solutions and chemicals, low water absorption, and good insulation properties.
Q:Is work in rubber products harmful to health?
Work in a rubber factory is harmful to health.When the rubber vulcanization molding, high temperature reaction releases sulfur dioxide, sulfur dioxide, sulfur dioxide, hydrogen sulfide gas three. If the workshop dust suction measures are not enough, these gases will pollute the workshop environment, workers will suck into the body, endanger health.
Q:Are there formaldehyde in rubber products, too?
Yes, because formaldehyde is a very good organic solvent, so the general rubber varieties contain formaldehyde.
Q:For the application of common synthetic rubber, not too long or too difficult, want to do
Chloroprene rubber (CR) by chloroprene do monomer emulsion polymerization and into the polymer. This rubber molecule containing chlorine atom, so compared with other general rubber: it has excellent oxidation resistance, ozone resistance, non flammable, after the fire can be self extinguishing, the advantages of oil resistance, solvent resistance, acid and alkali aging resistance, good air tightness; the mechanical performance is better than natural rubber, it can be used for general rubber, also can be used for special rubber. The main disadvantage is poor cold resistance, large proportion, relatively high cost, good electrical insulation, processing is easy to stick rolling, easy to scorch and easy sticking. In addition, rubber poor stability, not easy to save. The temperature range of about - 45 DEG C ~ + 100 DEG C. Mainly used in the manufacture of anti ozone aging resistance, high cable sheath and various protective cover, protective cover; oil resistance, chemical corrosion resistance of hose, adhesive tape and chemical lining Flame resistant underground mining rubber products, as well as a variety of molded products, seals, mats, adhesives and so on
Q:How do ordinary NBR and EPDM materials differ?
Difference: EPDM density is lower than NBR, the appearance of EPDM is transparent or white, and NBR is yellow or white yellow.
Q:Properties and specific uses of various rubbers
Natural rubber is mainly derived from the Hevea tree. When the epidermis of this rubber tree is cut open, it will shed milky juice. It is called latex, and the latex will be natural rubber when it is condensed, washed, molded and dried.
Q:How does the rubber part of the watch become yellow?
It is mainly divided into two kinds of natural rubber and synthetic rubber. Natural rubber is made from rubber, rubber and grass. Synthetic rubber is obtained by polymerization of various monomers. Rubber products are widely used in industry or in all fields of life. It has a wide range of uses. [1] can also be divided into rubber with natural rubber, general rubber, styrene butadiene rubber, nitrile rubber, silicone rubber, butadiene rubber, butyl rubber, EPDM rubber, chloroprene rubber types.
Q:Are rubber products poisonous? What harm?
A product of a combination of many components, produced by certain cross reactions, with high elasticity. In general by the rubber, filler, plasticizer, active agent, accelerator, curing agent and other additives (pigment, odor, conductive composition etc.).
Q:How to make white rubber products do not yellow or delay yellowing time?
1, raw material itself yellow degeneration, for example, NR aging resistance than SBR and BR difference.2, the matching of accelerant system. The accelerator can use DM and M to achieve yellow change 4, but the whole system needs to be adjusted. The use of anti yellowing enhancers such as two dithiocarbamate on yellow Bianyou benefits, but at the expense of great property and operation. The faster the sulfidation rate, the less the chance of breaking the chain, and the aging degree is restrained. But at the same time sacrificing the comprehensive nature. The cross-linking bonds generated by rapid vulcanization and slow vulcanization are different. For example, tension, tear and so on, are greatly affected. But the elasticity brittleness will increase.

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