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Posts Tagged ‘Melamine foam’

Using Melamine Foam to Stop Fire Tragedy like Brazil Night Club fire

April 23rd, 2013

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It was so regretful to hear Brazil Night Club fire tragedy. According to economist that the death toll from a fire that broke out in the early hours of January 27th in a Brazilian nightclub has already reached 232, with more than 100 injured, many severely. Almost all the victims were young; the nightclub, Kiss, in the university town of Santa Maria in the far southern Brazilian state of Rio Grande do Sul, was popular with students. Most of the deaths were from smoke inhalation and asphyxiation.

Questions are being asked about the quality of the nightclub building and whether emergency procedures were followed. The blaze appears to have been started by a pyrotechnic flare lit on stage by a member of the band; sound-proofing material caught fire, producing toxic gases which quickly overpowered many in the crowd. Police said that at least one exit was blocked. Television stations broadcast images of firefighters, helped by bystanders, breaking through a wall to get in. Some of the victims were found in the bathrooms, possibly because they mistook them for emergency exits, and were then unable to come back out through the panicked crowds.

The real murderer, however, I think it was the sound-proofing material, PU FOAM, (polyurethane foam). Even some PU foam, which adds fire-proofing agent when producing, they were easily lit and then released toxic gases when they exposed to any outside flame.

It is the real murderer of this tragedy, if we want to stop such fire tragedy, we should stop using fire-spreading materials PU-FOAM as construction materials.

Why not try melamine foam, now, through it will cost higher, comparing with PU foam, but which is more important for you, living or money?

But why does melamine foam win other sound-proofing and fire-retardancy materials?

The reason is simple, for melamine foam is able to provide lightweight, sound-proofing and fire-retardancy properties, especially the flame-retardancy performance.

Melamine foam is a kind of soft, thermosetting and environmental protection material made from melamine resin by foaming. It has three-dimensional grid structure and 99% opening rate.

Melamine foam fire-retardancy demonstration, from SINOYQX YarQuenXer acoustical melamine foam.

It is time to purchase YarQuenXer melamine foam to stop fire tragedy via sales@sinoyqx.com.

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Posted in Melamine Foam, Melamine Foam Properties, SINOYQX, Sound Proofing, Thermal Insulation, YarQuenXer

Tags: Brazil fire tragedy fire tragedy fire-retardancy flame-retardancy Melamine foam PU foam SINOYQX sound-proofing YarQuenXer

SINOYQX Melamine Foam Sound Containment System for Anechoic Chambers Application

March 23rd, 2013

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Featured properties

 Class A Fire Retardant
 High Performance Absorption
 Fiber Free
 Anechoic Wedge Design
 Low-density, 4-12KG/M3

Material:
SINOYQX 99% Open cell MELAMINE FOAM
Pattern:
The linear wedge pattern offers excellent absorption and allows you to create many different designs. Install vertically, horizontally, diagonally, checkerboard as well as create your own design.
Application:
For use in all industrial, commercial, audio, OEM and residential markets; Ceilings, wall partitions, sound studios, radio stations, band rooms, gymnasiums, swimming pools, gun ranges, mechanical rooms and enclosures. Thicker wedges are designed for use in anechoic chambers and test cells.
Thickness:
5”, 10”, 15”, 20” and custom (Standard Panel)
Sizes:
197″ x 79″ (diagrams) and custom sizes
Colors:
 Natural White or Light Grey
 Custom colors available upon request

If you are interested in SINOYQX melamine foam for anechoic chambers, please feel free to contact us via sales@sinoyqx.com or phone 0086-28-6792-0663.

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Posted in Acoustic Applications, Industrial Noise Reduction, Melamine Foam, Professional Acoustics, SINOYQX, Sound Absorption in Building

Tags: anechoic chamber anechoic wedge class a fire retardant fiber free Melamine foam SINOYQX sound absorption

Melamine Foam Lotus Drawing

January 21st, 2013

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Thanks to melamine foam plastic exceptional sound proofing performance and easily-processed property, melamine foam plastic, manufactured and provided by SINOYQX, is processed to a lotus drawing for a perfect decoration.

For more information about melamine foam and its sound proofing performance, please visit www.sinoyqx.com or email SINOYQX via, info@sinoyqx.com or voice at 0086-28-6792-0663.

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Posted in Melamine Foam, SINOYQX, Sound Absorption in Building

Tags: Melamine foam melamine foam lotus drawing melamine foam sound proofing

SINOYQX Colorful Melamine Foams for diversified Client Needs

December 11th, 2012

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SINOYQX( SCC Group), one of the world largest melamine foam plastic manufacturers and providers, provides worldwide clients exceptional acoustic and fire retardancy melamine foams plastic with common white, gray and black color, but also foams with different colors solutions, such as blue melamine foams, orange melamine foams, and red foams, etc, to meet clients’ special requirements.

If you need SINOYQX melamine foams for you acoustic, fire insulation, and clearing solutions, please contact us via sales@sinoyqx.com.

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Posted in Acoustic Applications, Melamine Foam, Melamine Foam Properties, SINOYQX, Thermal Insulation Materials

Tags: blue melamine foams colorful melamine foams Melamine foam orange melamine foam red melamine foams SINOYQX white foam

SINOYQX Melamine Foam Fire Retardancy/Insulation Demonstration

November 7th, 2012

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Posted in Melamine Foam, Melamine Foam Properties, SINOYQX, Sound Absorption in Building, Thermal Insulation, Thermal Insulation Materials

Tags: Fire Retardancy/Insulation Melamine foam Polyurethane Foam SINOYQX

SINOYQX melamine foam water resistance demonstration

October 10th, 2012

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Posted in Melamine Foam, SINOYQX, Water Resistance

Tags: Melamine foam SINOYQX water resistance

Sound Pressure Level & Perceived Volume Reduction

August 17th, 2012

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The following table shows various dB levels and the corresponding reduction in actual sound pressure level (SPL) as well as the human perceived volume reduction for reducing noise levels.

dB	Actual SPL Reduction	Perceived Volume Reduction
3 dB	50.00%	18.77%
6 dB	75.00%	34.02%
9 dB	87.50%	46.41%
12 dB	93.75%	56.47%
15 dB	96.88%	64.64%
18 dB	98.44%	71.28%
21 dB	99.22%	76.67%
24 dB	99.61%	81.05%
27 dB	99.80%	84.61%
30 dB	99.90%	87.50%
33 dB	99.95%	89.85%
36 dB	99.98%	91.75%
39 dB	99.99%	93.30%
42 dB	99.99%	94.56%
45 dB	100.00%	95.58%
48 dB	100.00%	96.41%
51 dB	100.00%	97.08%
54 dB	100.00%	97.63%
57 dB	100.00%	98.08%
60 dB	100.00%	98.44%
63 dB	100.00%	98.73%
66 dB	100.00%	98.97%
69 dB	100.00%	99.16%
72 dB	100.00%	99.32%
75 dB	100.00%	99.45%
78 dB	100.00%	99.55%
81 dB	100.00%	99.64%

Signal to Noise ratio (S/N) is expressed as the dB difference between the sound source (such as someone speaking) and the sound at the listeners ear. So if a person were speaking at 65dB, and a car noise was 60dB, the Signal to Noise ratio would be 5dB. In a classroom the recommended background noise level is 35dBA to result in S/N ratio of 20-25 dBA and +15 dBA at the back of the room, with a .6 second reverb time.

A few other important points to note:

A change of 1 dB is generally not perceptible.
A change of 3dB is just perceptible by most humans.
Speech is somewhat understandable at S/N ratios of 0dB (mostly by adults).
Speech is highly understandable at S/N ratios of >15dB by most children.

Source from www.acousticalsurfaces.com, for noise reduction materials, such as, melamine foam, please visit www.sinoyqx.com.

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Posted in Melamine Foam, SINOYQX, SPL

Tags: Melamine foam noise reduction materials noise reduction measures perceived volume reduction reducing noising levels SINOYQX sound pressure level

Sound Pressure Level Data (SPL)

July 16th, 2012

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Sound pressure level (SPL) or sound level is a logarithmic measure of the effective sound pressure of a sound relative to a reference value. It is measured in decibels (dB) above a standard reference level. The commonly used “zero” reference sound pressure in air is 20 µPa RMS, which is usually considered the threshold of human hearing (at 1 kHz).

The following table presents noise data at octave-band center frequencied for familiar residential, outdoor transportation and building activity noise sources.

Sound Pressure Level
Example Source
Home	63 Hz	125 Hz	250 Hz	500 Hz	1000 Hz	2000 Hz	4000 Hz	8000 Hz	dBA
Alarm Clock at 4-9 ft – Ringing	—	46	48	55	62	62	70	80	80
Electric Shaver at 1.5 ft	59	58	49	62	60	64	60	59	68
Vacuum Cleaner at 3 ft	48	66	69	73	79	73	73	72	81
Garbage Disposal at 2 ft	64	83	69	56	55	50	50	49	69
Clothes Washer at 2-3 ft – Wash Cycle	59	65	59	59	58	54	50	46	62
Toilet – Refilling Tank	50	55	53	54	57	56	57	52	63
Whirlpool, Six Nozzles – Filling Tub	68	65	68	69	71	71	68	65	74
Window Air-Conditioning Unit	64	64	65	56	53	48	44	37	59
Telephone at 4-13 ft – Ringing	—	41	44	56	68	73	69	83	83
TV at 10 ft	49	62	64	67	70	68	63	39	74
Stereo – Teenager Listening Level	60	72	83	82	82	80	75	60	86
Stereo – Adult Listening Level	56	66	75	72	70	66	64	48	75
Violin at 55 ft – Fortissimo	—	—	91	91	87	83	79	66	92
Normal Conversational Speech at 3 ft	—	57	62	63	57	48	40	—	63
Outdoors	63 Hz	125 Hz	250 Hz	500 Hz	1000 Hz	2000 Hz	4000 Hz	8000 Hz	dBA
Birds at 10 ft	—	—	—	—	—	50	52	54	57
Cicadas	—	—	—	—	35	51	54	48	57
Large Dog at 50 ft – Barking	—	50	58	68	70	64	52	48	72
Lawn Mower at 5 ft	85	87	86	84	81	74	70	72	86
Pistol Shot at 250 ft – Peak Impulse Levels	—	—	—	83	91	99	102	106	106
Surf at 10-15 ft – Moderate Seas	71	72	70	71	67	64	58	54	78
Wind in Trees – 10 mph	—	—	—	33	35	37	37	35	43
Transportation	63 Hz	125 Hz	250 Hz	500 Hz	1000 Hz	2000 Hz	4000 Hz	8000 Hz	dBA
Large Trucks at 50 ft – 55 mph	83	85	83	85	81	76	72	65	86
Passenger Cars at 50 ft – 55 mph	72	70	67	66	67	66	59	54	71
Motorcycle at 50 ft – Full Throttle, Without Baffle	95	95	91	91	91	87	87	85	95
Snowmobile at 50 ft	65	82	84	75	78	77	79	69	85
Train at 100 ft – Pulling Hard	95	102	94	90	86	87	83	79	94
Train Siren at 50 ft	88	90	110	110	107	100	91	78	109
Car Horn at 15 ft	—	—	—	92	95	90	80	60	97
Commercial Turbofan Airplane at 1 mile – From Takeoff Flight Path	77	82	82	78	70	56	—	—	79
Military Helicopter at 500 ft – Single Engine, Medium Size	92	89	83	81	76	72	62	51	80
Interiors	63 Hz	125 Hz	250 Hz	500 Hz	1000 Hz	2000 Hz	4000 Hz	8000 Hz	dBA
Amplified Rock Music Performance – Large Arena	116	117	119	116	118	115	109	102	121
Audiovisual Room	85	89	92	90	89	87	85	80	94
Auditorium – Applause	60	68	75	79	85	84	75	65	88
Classroom	60	66	72	77	74	68	60	50	78
Computer Equipment Room	78	75	73	78	80	78	74	70	84
Dog Kennel	—	—	90	104	106	101	89	79	108
Gymnasium	72	78	84	89	86	80	72	64	90
Kitchen	86	85	79	78	77	72	65	57	81
Laboratory	65	70	73	75	72	69	65	61	77
Library	60	63	66	67	64	58	50	40	68
Mechanical Equipment Room	87	86	85	84	83	82	80	78	88
Music Practice Room	90	94	96	96	96	91	91	90	100
Racquetball Court	82	85	80	85	83	75	68	62	86
Reception and Lobby Area	60	66	72	77	74	68	60	50	78
Teleconference	65	74	78	80	79	75	68	60	83

Intermittent or peak noises may exceed the data given in the table by 5 decibels or more, depending on the source or environment. For many practical problems, however, the data can be considered to be typical source levels at the given distance and condition, or average general activity levels for interiors. The data can be used for design purposes if proper consideration is given to especially loud equipment or sources, which may exceed it, unusual site conditions, and any other conditions that deviate from normal. For example, it is prudent to measure transportation noise at proposed building sites near highways, airports, etc., so design data will represent existing noise sources and reflect specific site features. Note also that modern aircraft, trucks and office equipment may not be as loud as the examples in the table.

Note: Sources for noise level data include Journal of the Acoustical Society of America, Sound and Vibration, Noise Control Engineering Journal and technical publications of the U.S. Environmental Protection Agency and the U.S. National Bureau of Standards.

Reprinted from the 1988 edition of Architectural Acoustics with the kind permission of Author, David Egan.

Sourced from acousticalsurfaces, from noise reduction material, melamine foam, please visit SINOYQX official size www.sinoyqx.com.

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Posted in Melamine Foam, Melamine Foam Properties, Residential & Commerical Soundproofing, SINOYQX, Sound Absorption in Building

Tags: building activity noise data Melamine foam noise data noise reduction materials outdoor transportation noise data residential noise data SINOYQX sound pressure level SPL

Sound Absorbing Materials to be affected by Sound Absorption Materials Distribution

July 2nd, 2012

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The efficiency of a sound-absorbing material can be affected by its distribution and location in a room. 25 panels of sound-absorbing material, for example, each 2′×2′, will absorb more sound energy per panel when spaced in a “checkerboard” pattern on a 200 sq ft plaster ceiling than a uniform coverage of the same material.

This increase in efficiency (called the area effect) is due to the diffraction of sound energy around the perimeters of the spaced sound-absorbing panels and to the additional sound absorption provided by the exposed panels’ edges. The efficiency of sound-absorbing panels increases as the ratio of the perimeter to surface area increases.

The 25 spaced absorbers have a ratio of perimeter to surface area 5 times the ratio for the 25 uniform-coverage absorbers. Sound energy reflected from the hard-surfaced plaster adjacent to the absorbent edges in the checkerboard configuration tends to spill over onto the sound-absorbent panels.

Therefore, the spaced absorbing material absorbs more sound energy than would be accounted for by its area. This kind of surface treatment also can be used to achieve a diffuse sound field, which is desired in music practice rooms. Note that the total absorption contributed by spaced absorbers in this example will be only slightly less than the absorption provided by coverage of the entire 200 sq ft ceiling.

References

T.W. Bartel. “Effect of Absorber Geometry on Apparent Absorption Coefficients as Measured in a Reverberation Chamber”, Journal of the Acoustical Society of America, April 1981.

Reprinted from the 1988 edition of Architectural Acoustics with the kind permission of Author, David Egan.

Note: Assuming a 1″ thickness of the sound-absorbing panels in the foregoing example, the sound absorbing area of the panel edges contribute an additional 23% to the 100 sq ft surface area shown.

Source from www.acousticalsurfaces.com , for more about sound absorber, such as melamine foam, please log into www.sinoyqx.com .

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Posted in Melamine Foam, Residential & Commerical Soundproofing, SINOYQX, Sound Absorption in Building

Tags: Melamine foam SINOYQX sound absorbers sound absorbing materials sound absorption materials sound absorption materials distribution

SOME NOISE CONTROL FACTS

June 25th, 2012

1) The major factor controlling the sound insulation of a given type of cavity floor is the sum of the masses per unit area of the floor and the ceiling layers.

2) Of lesser importance, but still significant, are the thickness and density of the sound absorbing material. The depth and spacing of the joists and the spacing of resilient metal channels for ceiling finishes. Increasing any of these variables increases the sound insulation.

3) Floor/ceiling assemblies having no sound absorbing materials provide about 8 STC points less than the same assemblies containing about a 6″ thickness of sound absorbing material.

4) Joist type floor/ceiling assemblies without resilient channels do not achieve an STC 50 in any practical configuration with or without sound absorbing material in the cavity.

5) Wood furring or metal hat channels to support the gypsum board ceiling are markedly inferior to resilient metal channels.

6) Attaching the sub-floor material to the joists with both construction adhesive and nails gave approximately the same results as with only screw for attachment.

7) Joist floors with ceiling assemblies having resilient channels between 2 layers of gypsum board give very poor sound insulation. (Adding a resilient channel to an existing gypsum surface and adding another layer of gypsum board will do little or nothing to improve the sound insulation of the wall or ceiling assembly.)

8) Applying sound absorbing material in the cavity of a joist floor with a ceiling that is not resiliently suspended will provide no significant increase in sound insulation.

9) Floors with concrete toppings and no additional resilient surface or support, typically will get impact isolation class (IIC) ratings of less than 30. Adding resilient surface layers to floors with concrete surfaces greatly increases the IIC ratings.

Reference: Summary report for Consortium on Fire Resistance and Insulation of Floors – IRC Internal Report – Nation Research Council of Canada.

Source acousticalsurfaces, for more sound absorption materials, please visit: www.sinoyqx.com