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Parameter

Classification

Performance

PMMA  Plate technical parameters

Physical properties

Proportion

1.17-1.20

Specific heat CaL/gr

0.35

Permeability

Difficult

Water vapor permeability

Difficult

Permeable

Difficult

Transmittance

93%-95%(Their transmission rate than inorganic glass, the transmittance optimal material

Optical density

0.036

Haze

 

Absorbent

Difficult

Refractive

1.49ND

Thrust strength

55-77Mpa

compression strength

130Mpa

Flexural strength

110Mpa

Modulus of elasticity

24-28Mpa

Shear strengthKG/CM

630Kg/cm

Elongation

2.5-6.0%

Surface roughness

Positive and negative 0.15mm

Mechanical properties

Notched impact strengthKg/M

14Mpa

Notched impact strengthKg/M

 

Fatigue strength

 

Hardness

Brinell hardness 137.2-176.4MP

Coefficient of linear expansionC

7.0(X10/C)20C

Thermal conductivity

0.14-0.20w/mk

The glass transition temperature

105°C

Heat resistance

100°C  The following does not distort

Cold resistance

 

Thermal performance

Melt flow index

1.5-3g/10min(Cast bulk polymerization of PMMA is a non-melt)

Decomposition temperature

》220°C

Flame-retardant

Compared with ordinary plastic, flammability

Oxygen index

17.3 Antioxidant

Long-term continuous use temperature

90°C

Heat distortion temperature

140-180

Vicat softening temperature

100°C

Composite deformation temperature

>120°C

Thermoform temperature

160-180°C(And the thickness of the plate and time-related)

Embrittlement temperature

92°C

Resistance (ohms)

The surface resistance of 10, the volume resistance 10

 

Breakdown voltage

 



Acrylic resistance of drugs

Sulfuric acid 60%

60% To for stability

Hydrochloric acid 60%

30% To for stability

Nitric acid 60%

20% To for stability

Acetic acid 60%

Dissolve

Hydrogen fluoride water

Inviolability

Caustic soda 60%

50% To for stability

Ammonia 60%

18% To for stability

Ammonia 20%

28% To for stability

Chlorinated water

Become dark

Iodine water

And even easy to color


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