SolverPI-Rigid Foam

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Product Detail

Item No.: SolverPI-Rigid Foam

Since 2010, based on the original technology and refer ourself to the international technical standard, SOLVER POLYIMIDE developed a new type of rigid PI foam integrated production line has been built, with1000MT annual output. With different needs,we can produce the PIfoam of density and intensity. The PI foam has the characters of high and low heat resistence, High fire retardent,radiation resistence,wave-transparent,microwave absorpting,anti-corrosion,longlife,excellent comprehensive properties,the high rate of obturator,easy processing. It can be widely used in aviation, spaceflight, navigation, transportation, construction and so on.

This product has past the fire retardancy test in the Yuandong fire experiment center.And the result show that our material is in well accordance with the technique target of smoke density?toxicity test?low flame-spread combuston heat value in«International fire test program application rules»require.The room temperature emissions?high temperature split product?inhalation toxicity experiments on animals are in accordance with human bddy health standards after Non metallic material inspection center of People’s Liberation Army Navy detection.

APPLICATIONS:

The application in aerospace

The spherical frame is the air tight cockpit terminal.And it is the thin-wall construction which is mainly made of ball cover?split-stopping tape?spherical frame edge and such components.The spherical frame will produce fatigue crack because of the airtight loading during the airplane ground-sky-ground process.So the key problem is how to prevent the airtight cabin fatigue damage.The rigid PIfoam plastic interlayer reinforcement structure can greatly improve the stability of the spherical frame and ruduce the weight of the spherical frame.

The rigid PI foam is used as core material of alae nasi parva,flap and airtight bulkhead in aircraft.The rigid PI foam has the extraoridinary fatigue resistence.It can be used in roter on the advanced high performance helicopter.It can take the load from the roter’s rotation and prolong the life of roter.

The application in transportation

The rigid PI foam with the density 52kg/m³,is characterized by high strength and high creep resistence.The PI foam as the composite core material adopt the co-cure process mading the 5cm carbon diber and PI rein stressed-skin construction which can be used as self-host truck body Sighificantly reducing the traffic noise.The structure made of two reinforcing PI rigid foams can produce the bonnet and top cap.

The application in ships and warships

(1)The side shell,bulkhead,top of the carbin which have the requirement of heat insulation,sound insulation.

(2)The cooling pipeline and high temperature steam pipeline over 37?.

(3)The submarine shell and frame part need processing of sound transmission loss

(4)The submarine and frame parts which do the heat and steam isolation avoid of the fog.

(5)Cryogenic vessel preservation.

Apperance requirements

1.1Surface:The surface should be smooth,the form hole be well-distributed.

2.2Qualty:Product quality and conditions should be consistent,clean,no impurities and defects affecting the processing or material properties.

1.3Color:The original color unless special provision.

1.4Toxicity:Avirulent,no harm to the skin long-term exposure.

1.5Odour:Odorlessness.

1.6Thickness:Based on the order,the error±5% is permitted.

Technical requirement

Table 1 the specification of rigid PI foam

Model/Performance	Test item	Technical requirement		Test Standard
		Rigid PI foam
		?	?
Physicochemical properties	Apparent density,kg/m³	70~110	110~200	GB/T 6343 The determination of apparent density of foam and rubber.
	Thermal conductivity,W/m,K(23?±2?)	?0.04		GB/T10295 The determination of insulation material of thermal,heat flow meter method.
	96hThe moisure absorption rate(relative humidity95%,temperature 49?±2?)	?5		GB/T20312 The determination of consruction material and the products’hygrothermal performance,moisure absorption performance
	Radiation resistence	There is not marked change apparent when radiation dose attain 200000Gy.		JJF1018We use the potassium bichromate(silver)dose to measure the ray water uptake dose
	Temperature resistence	No crack,?55? Not stick,200?,12h		GB/T9640Flexible and rigid foam polymer materials,accelerated aging test?
	Acid resistence(20%hydrochloric acid)	There is not change after steeped for 24h.		------
	Alkali resistence(10% caustic soda)	There is not any change in surface after for 24h.		-------
	Petrol resistence(120#petrol)	There is not any change in volum after steeped for 24h.		-------
	Tensile srength,MPa	?0.2	?0.3	GB/T6344Flexible foam polymer materials,the determination of tensile srength and crack growth rate
	Compressive strength(10%)MPa	?0.35	?0.45	GB/T8813 The determination of rigid foam’compression performance
Toxicity of material	Ordinary temperatures toxicity	Meet the requirement of GJB 11.2?GJB 11.3 rules.		GJB11BNuclear submarine cabin air composition allowable concetration requirements. GJB3881Toxicity assessment of nonmetallic materials for ship.
	Oridinary temperatures smoke and toxicity	Meet the requirement of FTP’s rules		IMO 2010FTP Part2 of rule The smoke and toxicity testing procedures
Fire protecting performance	(limit)Oxygen index,%	40		GB/T2406.2 Determination of the burning behaviour of plastics by oxygen index method.Part 2 greenhouse experiment.
	Density of smoke(Dm) (Flameless mode flame mode)	200		GB/T10671 Test method for specific optical density of smoke generated by solid materials
	Flame resistence	After leaving the fire ignited material 1s self extinguishing and no droplet		GB/T2408 Test method for flammability of plastics.Level method and vertical method
	Low flame spread	Meet the requirement of FTP		IMO2010FTP The rule part 5-The surface materials flammability testing procedures
Combustibility	Heat of combustion,MJ/?	?45		ISO1716The determination of heat of combustion
Workability	The construction technology	No dust,easyto cut,easy packaging,construction technology can meet the requirements of the users.		-------
Acoustical behavior	Noise reduction cofficient	?0.6		GB/T18696.1 The measurement of the acoustic impdance of sound absorption coefficient and impedance in tube Part1:Voltage Standing Wave Ratio

The concentration of harmful gases does not exceed the requirements of GJB 11B provisions of the cabin air froup divided allowable concetration.The material of the median lethal concentration LC₅₀?50g/m³.

According to the 2010FTP rules of Annex 1 second part2--The smoke and toxicity testing procedures under the condition of high temperature and smoke density detection materials smoke toxicity.The average optical density ratio requirement of flue gas(Dm)?200;The smoke toxicity concentration was less than the limit value in table 2.

Table 2 The limit value of toxics smoke concentration(Unit:ppm)

Smoke components	CO	HBr	HCI	HCN	HF	SO₂	NO_X
Smoke density	1450	600	600	140	600	120	350
Note:SO₂ for floor coverings,this index is 200ppm

According to the 2010FTP rules of Annex 1 second part 5--Material testing for pocedures for combusion,See Table 3 for specific requirements.

Table 3 PI foam surface burning characteristics

No.	Surface combustion characteristic index	Allowable value
1	Go out when the critical heat flux,kW/?	?20.0
2	Continuous combustion heat,MJ/?	?1.5
3	Gross heat release,MJ	?0.7
4	The heat release peak,Kw	?4.0