PTMEG TDI Polyurethane Prepolymer,finished Product Applications:

Prinċipalment użat għal il-produzzjoni ta' speċjali rekwiżit poliuretan elastomer prodotti, tali bħal mining makkinarju partijiet, mekkaniċi aċċessorji, eċċ.

Prodott Speċifikazzjonijiet

BQ6595	Unità	Test Dejta	Ittestjar Standard
Dehra (20 grad )		Bla kulur trasparenti viskuż likwidu
NCO%	%	6.3±0.2	HG/T 2409
Viskożità (80 grad )	mPa·s	500±100	GB/T 12009.3

Ħażna Kundizzjonijiet

Dan PTMEG TDI Polyurethane Prepolymer għandu ikun maħżun fi a cool, nixxef post , evitar umdità u għoli temperaturi. L- ixkaffa ħajja ta ' mhux miftuħa prepolimeru huwa tnax xhur.

Ikkastjar Proċess

Saħħan minn qabel temperatura qabel użu/ grad	70±5
Saħħan minn qabel ħin qabel uża/h	4~6
Katina extender tip	MOCA
Rakkomandat R valur proporzjon (isocyanate/chain extender)	1.05~1.1
Taħlit temperatura ta' prepolimer/ grad	75~85
Taħlit temperatura ta' katina extender/ grad	110
Prepolymer to chain extender ratio/ per 100 parts of prepolymer	18.5~18.8
Moffa temperatura matul ikkastjar % 2f grad	100
Forn temperatura matul ikkastjar/ grad	100
Ġel ħin/min	5~6
Demold ħin/min	20~30
Post-curing time (100 degree )/h	12~16

Il hawn fuq test riżultati huma ibbażati fuq kampjuni �% a0PTMEG TDI Polyurethane Prepolymer iffurmat in a rettangolari flat moffa użin 100g.

Lest Prodott Propjetajiet

Punt	Unità		BQ6595/MOCA
Dehra ta ' lest prodott (25 grad )			Dawl isfar elastomer
	Shore A	GB/T 531.1-2008	95±2 (45D±3)
	g/cm³(25 grad )	GB/T 533-2008	1.126
100% 25 Modulus stress	Mpa	GB/T 528-2009	13
300% 25 Modulus stress	Mpa	GB/T 528-2009	28
Tensjoni saħħa fi waqfa	Mpa	GB/T 528-2009	52
Titwil at break	%	GB/T 528-2009	380
Lemin angolu dmugħ saħħa	kN/m	GB/T 529-2008	113
DIN brix	mm³	GB/T 9867-2008	53
Rebound reżiljenza	%	GB/T 1681-2009	42

Ipproċessar Proċedura

1.Preheat the prepolymer to 70~75 degree for 4~6 hours sa completely melted. Take a measured amount of prepolymer and heat to 85~90 degree , and degas under a vacuum of -0.1MPa sa all bubbles are eliminati.

2.Measure a quantity of MOCA and heat sail melted (around 110 degree ), and set aside for later use.

3.Control the temperature of the degassed prepolymer between 75-85 degree , add the melted MOCA, using a ratio of 100 parts prepolymer to 18.5~18.8 parts MOCA, and mix evenly. Pay attention to the working time; pigments can be added with the chain extender.

4.Secondary vacuum defoaming can be performed within the working time, controlling the defoaming time to less than 1 minute sa no obvious bubbles are present.

5.Pour il imħallat materjal fi a moffa miksi ma a speċifiku għall-poliuretan rilaxx aġent u imsaħħan minn qabel il il korrett temperatura , bi il- moffa temperatura ikkontrollata fi 100 grad . Be oqgħod attent biex tevita insib wisq bżieżaq meta tferra ', u break kwalunkwe bżieżaq li titla ' il-wiċċ bi a fjamma. Għal prodotti li jeħtieġu pressjoni iffurmar, kontroll il ġel punt qabel il-wiċċ isir li jwaħħal iżda mhux għadu kompletament imwebbes.

6.The demold time is 20~30 minutes. Generally, the larger the product, the longer the demold time, so please extend the demold time time so please extend the demold time appropriately.

7.After demolding, the product should be placed in a 100 degree oven to continue post-curing for 12~16 hours sa the physical properties fully meet the requirements.