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Effect of temperature on the properties of PMMA

Categories: Industry newsStars: 3Stars Visit: - Release time: 2017-04-13 14:21:00
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 A number of properties of organic glass (especially physical, mechanical properties) show a strong dependence on temperature.

(1) the effect of temperature on the elongation of PMMA
With the increase of temperature, the fracture organic glass in brittle fracture when the elongation gradually increased to 60 DEG C when the organic glass elongation of 5.6%. when more than a certain temperature, organic glass softening, stretching process is yielding. The relationship between temperature and elongation and yield elongation of pmma.
(2) the influence of temperature and other factors on the hardness of PMMA
The hardness of PMMA decreases with the increase of temperature. In addition, the greater the load value used in the determination of hardness, the lower the measured hardness. In a certain range, the greater the thickness of the acrylic sheet, the higher the measured value, but when the thickness increases to a certain extent, the measured hardness is no longer significantly improved.
(3) effect of temperature on tensile strength and tensile modulus of PMMA
The tensile strength and tensile modulus decrease linearly with increasing temperature. The reason is: with the increase of temperature, reinforcing material chains activity change gradually from polymer, glass state to high elastic state, viscous flow, macro decreased increase, flexible strength and modulus of elasticity.
(4) effect of temperature on impact strength of PMMA with different thickness
Temperature has a similar effect on the impact properties of pmma. With the increase of temperature, the motion of the molecular chain of organic glass is strengthened, and the flexibility and the impact strength are increased.
(5) effect of temperature on Poisson's ratio of PMMA
The temperature has a certain influence on the Poisson's ratio of organic glass, the higher the temperature, the greater the Poisson's ratio.
Keywords in the article: organic glass

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