CN202693414U

CN202693414U - Polymer material intelligent tensile creep tester

Info

Publication number: CN202693414U
Application number: CN 201120501625
Authority: CN
Inventors: 杨秀英; 张辉; 张德庆
Original assignee: Qiqihar University
Current assignee: Qiqihar University
Priority date: 2011-12-06
Filing date: 2011-12-06
Publication date: 2013-01-23
Anticipated expiration: 2021-12-06

Abstract

A polymer material intelligent tensile creep tester has a function of testing the change of the deformation of a polymer material over time under different temperature conditions and under the action of tensile force. The polymer material intelligent tensile creep tester has a displacement sensor mounted at the top of the tester; an upper holder, a sample, a lower holder, and a load are connected below the displacement sensor; a heating-cooling module, a data storage module, a liquid crystal display module, and a peripheral circuit button module are mounted at the tester bottom; a temperature measuring module, a humidity measuring module, and a humidification module are mounted inside the tester.

Description

Macromolecular material intelligence tensile creep instrument

Technical field:

The utility model relates to a kind of instrument for test macromolecular material tensile creep performance.Its function is that the test macromolecular material is in its deformation temporal evolution situation under the uniform temperature condition, under the tensile force effect.

Background technology:

The creep of macromolecular material refers in certain temperature and the effect of less constant external force (pulling force, pressure or torsion) lower, the deformation of material in time prolongation and the phenomenon that increases gradually is the viscoelastic basic expressions of macromolecular material static state.Materials such as rubber, macromolecule membrane and as-spun fibre particularly, when being subjected to External Force Acting, macromolecular chain is adjusted conformation by sub-chain motion, thereby produces creep behaviour.Various types of macromolecular materials are different because of its molecular structure, and creep can be divided into tensile creep, compression creep and reverse creep etc.This macromolecular material intelligence tensile creep instrument its feature is to adopt laser displacement sensor to gather the tensile deformation signal through central control module, by data memory module record deformation data, the problems such as the temperature and pressure variation range is little in the macromolecular material Experiment of extruding creep, automaticity is low have been solved.

Summary of the invention:

The utility model macromolecular material intelligence tensile creep instrument relates to a kind of instrument for test macromolecular material tensile creep performance.Its function is test macromolecular material its deformation temporal evolution situation under condition of different temperatures, under the tensile force effect.Its feature is comprised of displacement measurement module, temperature-measuring module, moisture measurement module, peripheral key circuit module, intensification humidification module, LCD MODULE, data memory module, central control module.

The utility model is characterized in that the macromolecular material sample is placed in the instrument of controllable temperature, installs and employing displacement measurement module measurement tensile deformation, records over time curve of tensile deformation behind central control module, data memory module.Under certain load with the stretcher strain of macromolecular material sample, the displacement measurement module, data memory module, central control module record tensile deformation over time automatically.Macromolecular material intelligence tensile creep instrument, it is characterized in that, displacement transducer is installed in the instrument top, its below connects upper clamper, sample, lower gripper, load, the instrument bottom is equipped with heating and cooling module, data memory module, LCD MODULE, peripheral circuit key-press module, and instrument internal is equipped with temperature-measuring module, moisture measurement module, humidification module.

Its instrument one-piece construction figure as shown in Figure 1, each functions of modules is as follows:

1, temperature-measuring module

This module adopts the DS18B20 digital temperature sensor, and it has unique one-wire interface mode, and DS18B20 only needs a Tiaokou line can realize the both-way communication of microprocessor and DS18B20 when being connected with microprocessor; Temperature-measuring range is at-55 ℃～+ 125 ℃, 0.5 ℃ of intrinsic thermometric resolution; Working power: 3～5V/DC, in use without any need for peripheral cell, measurement result is with 9～12 bit digital quantity mode serial transfers.

2, moisture measurement module

This module adopts the HS1101 humidity sensor, and it is based on the capacity cell of Particular craft design, need not proofread and correct under standard environment, long-time saturated lower quick dehumidification can automatic welding, comprises wave-soldering or water logging, high reliability and long-time stability, reaction are fast.Work temperature a:-40～100 ℃; Storage temperature: Tstg:-40～125 ℃; Supply voltage: Vs:10 Vac; Humidity range: RH:0～100 %RH.

3, displacement measurement module

The displacement measurement module adopts the ZLDS10X laser displacement sensor, as shown in Figure 2, and the minimum 2mm of range, maximum 1000mm; The minimum 10mm of the initial distance of range, maximum 245mm; Frequency response: 2K, 5K, 8K, the 9.4K linearity are the highest by 0.1%, and resolution is the highest by 0.03%.Its ultimate principle is the optical triangulation method: semiconductor laser 1 is focused on testee 6 by eyeglass 2.Reflected light is collected by eyeglass 3, projects on the CMOS array 4; Signal processor 5 obtains distance apart from object by the light spot position on the trigonometric function computing array 4.

4, peripheral key circuit module

Peripheral key circuit module adopts 4 * 4 Design of Matrix-Keyboards, and wherein ten is ten key, a menu key, and turnover key about in the of two, a definite button, one is returned button, restarts button for one.

5, heating and cooling, humidification module

The heating and cooling module can adopt pot-type boiler, and humidification module can adopt the household small-size humidifier, and then with pid algorithm the difference of detection signal and setting value is regulated rear conduct and export at last control signal to topworks, thus control water heater and humidifier.

6, LCD MODULE

This module can adopt 12864 liquid crystal, utilizes Single-chip Controlling, and time, temperature, humidity and displacement are shown.

7, data memory module

Data memory module, adopt 32M bit flash memory chip KM29N32000TS as storer, KM29N32000TS has the programmability of E2PROM and non-volatile concurrently as flash memory, and capacity is large, speed is fast, only needs single+5V power supply just can do operations such as reading, programme, wipe.

8, central control module

This module can adopt AT89S52 single chip microcomputer computing machine as Master control chip.

Description of drawings:

Fig. 1 is macromolecular material intelligence tensile creep instrument structural representation;

Among Fig. 1,1, the moisture measurement module; 2, humidification module; 3, temperature-measuring module; 4, displacement measurement module; 5, upper clamper; 6, sample; 7, lower gripper; 8, load; 9, central control module; 10, heating and cooling module; 11, data memory module; 12, LCD MODULE; 13, peripheral circuit key-press module.

Fig. 2 is displacement measurement modular structure schematic diagram;

Among Fig. 2,1, semiconductor laser; 2, eyeglass; 3, eyeglass; 4, linear COMS array; 5, signal processor; 6, testee is positioned at a point, the b point.

Embodiment:

The macromolecule material film sample is placed on can regulating and controlling temperature (room temperature ~ 100 ℃), in the pulpit of humidity (chamber wet ~ 100%), load (under the 100g ~ 1000g) with its stretcher strain (0 ~ 50mm) or remove load after retraction, laser displacement sensor just can detect the variation of this displacement, automatically detect displacement data, precision can reach 0.01mm, and memory card receives time corresponding to displacement simultaneously, and records, output time-inflection curves on display.This instrument adopts the temperature humidity controller to regulate the pulpit humidity and temperature, can record the tensile creep under the certain limit temperature and humidity condition.Experimental provision is connected with photosensitive device, and output time-inflection curves realizes the intellectuality of this experiment automatically.Solved the existing error of simple stretch creepmeter larger, can't realize arbitrarily temperature, humidity, the creep data under the state is measured, and the low problem of automaticity.

Instrument adopts the ZLDS10X laser displacement sensor, and counting accurately; Adopt well heater, small-sized humidifier can be adjusted to the temperature and humidity of standard and other free position; Adopt DS18B20 digital temperature sensor collecting temperature data (temperature-measuring range at-55 ℃～+ 125 ℃, 0.5 ℃ of intrinsic thermometric resolution); Adopt the HS1101 humidity sensor to gather humidity data (humidity range: RH:0～100 %RH).Image data is transferred to central control module, is transferred to data memory module again, finally demonstrate temperature, humidity and time-displacement curve in liquid crystal display, make experimental data more accurate, true and reliable, automaticity is high.

This instrument can not only imitate summer high temperature, high humidity environment is measured the stretched plastic film creep, can also study the operating limit of film under larger External Force Acting.

The utility model has solved the problems such as the temperature and pressure variation range is little in the macromolecular material Experiment of extruding creep, automaticity is low.Mainly be applicable to each universities and colleges' Macromolecular Material Speciality experimental teaching, macromolecule creep research use, also can be used as the scientific research institutions that are engaged in macromolecular material scientific research, high molecular products production, the underlying instrument that enterprise carries out tensile creep performance study, test.

Claims

1. macromolecular material intelligence tensile creep instrument, it is characterized in that, displacement transducer is installed in the instrument top, its below connects upper clamper, sample, lower gripper, load, the instrument bottom is equipped with heating and cooling module, data memory module, LCD MODULE, peripheral circuit key-press module, and instrument internal is equipped with temperature-measuring module, moisture measurement module, humidification module.