Forecasting method for isothermal crystal dynamics parameter of high polymer

A kinetic parameter, isothermal crystallization technology, applied in measurement devices, scientific instruments, electrical digital data processing, etc., can solve the problem that high polymers have not been reported yet.

Inactive Publication Date: 2007-05-16
FUZHOU UNIV
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Problems solved by technology

However, the simulation of homogeneous and heterogeneous nucleation and crystallization of polymers has not been reported at home and abroad.

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  • Forecasting method for isothermal crystal dynamics parameter of high polymer
  • Forecasting method for isothermal crystal dynamics parameter of high polymer
  • Forecasting method for isothermal crystal dynamics parameter of high polymer

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Embodiment Construction

[0054] The method for obtaining the initial linear rate of crystallization G(0) is: melt the sample on the electric heating plate for 7 minutes, then quickly transfer it to a hot stage at a set temperature to crystallize it, observe the crystal form, and measure the linear growth of the sample at this temperature rate, draw the linear growth rate-time curve, and derive the initial crystallization linear rate.

[0055] The method for obtaining the initial number of crystal nuclei is as follows: put the sample on a glass slide, melt it for 7 minutes, close the cover glass and press it into a thin film, quickly put it into an oil bath with a constant crystallization temperature, keep the temperature at a constant temperature for 5 hours, and take it out naturally. Cool down to room temperature, observe and take pictures under a transmission polarizing microscope; estimate the number of spherulites in the simulation system according to the pictures, the steps are as follows: use a ...

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Abstract

This invention relates to one prediction method of high polymer constant temperature crystal dynamic force parameters, which comprises the following steps: a, on Kim S P and Kim S C module base, adopting Monte carlo method and cell automatic machine combination method to deduce polymer analogue computation step; b, according to sample to get intensity and absolute crystal degree Xc, initial crystal linear speed G(0) and number; c, taking parameters in step b into high polymer constant crystal analogue computation to get the dynamic crystal parameters under set temperature; d, using computer program to improve analogue computer to compute efficiency.

Description

technical field [0001] The invention relates to a method for predicting kinetic parameters of isothermal crystallization of high polymers. Background technique [0002] The crystallization process of polymers is a complex process. It has long molecular chains, and how to arrange them into the crystal lattice has been a long-term research topic. In the experiment, the acquisition of crystallization parameters for isothermal crystallization of polymers at different temperatures has the disadvantages of high cost and cumbersome data processing. Although many scholars have used the Monte Carlo method to simulate the grain growth of metals and low molecules, there are very few simulations of polymer crystallization. At present, research in this area is mainly divided into four categories: the first category is Consider the main factors of the deviation between the theoretical value and the experimental value, or the order of many factors affecting the results; the second type is...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01N13/00G06F19/00
Inventor 林锦贤王灿耀郑玉婴
Owner FUZHOU UNIV
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