AOC Palapreg H 892-02 Low Shrinkage Additive for SMC/BMC with Grade A Surface

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Product Properties

Byronic H 892-02 is a low shrinkage additive for Grade A surface SMC / BMC. It has very low resin viscosity and excellent system shrinkage control.

major application

Byronic H 892-02 is ideal for products with A-grade surfaces or high surface brightness. Shrinkage can be controlled to zero or negative, making it suitable for a wide range of products that require shrinkage or surface quality. At the same time, Byorozai H 892-02
It has very good heat resistance, water resistance and weather resistance, and can meet the requirements of some special products.
Automotive parts: various automotive exterior parts
Electronic and electrical appliances: motor molded parts, precision injection parts Others: products with requirements for shrinkage and brightness

Product Specification

performances	realm	unit (of measure)	Test Standards
exterior condition	Clear/muddy	-	TM 2265
Viscosity 23℃	140-165	mPa.s	TM 2013
acid value	4-7	mgKOH/g	TM 2401
inherent	39.5-41.5	%	TM 2033

Liquid resin properties (typical values)

performances	numerical value	unit (of measure)	Test Standards
Storage period (unprimed, dark)	3	moon	20°C

Suggested Initial SMC Paste Formulation

ingredient	Weight (kg)
P 18-03	50
H 892-02 TBPB	50
Zinc stearate	1.5
CaCO3	4.5
MgO paste (35% MgO content)	180
MgO	2.5

H 892-02 System SMC Molding Compound Typical Properties

performances	numerical value	unit (of measure)	Test Standards
intensity	-30	g/cm3	-
Glass fiber content	-0.06	%	-
shrinkage	175	%	DIN 53464
bending strength	10000	MPa	ISO 178
Bending modulus of elasticity	80	MPa	ISO 178
tensile strength	9000	MPa	ISO 527-2
tensile modulus	3.1	MPa	ISO 527-2
Elongation at break	-	%	ISO 527-2

Instructions for use and precautions

H 892-02 is usually used in combination with P 18-03 for the production of low shrinkage molding compounds. Generally, the ratio of P 18-03 to H 892-02 is 50:50, but it can be adjusted according to the actual situation. Molding conditions are: 140~160°C and 50~100kg/cm2. Depending on the dimensional requirements of the final product, 300ppm~ 600ppm p-benzoquinone can be added to the formula (calculated on the basis of the total amount of resin and low shrinkage additives).

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