HX-TP type foam closed cell rate meter

Rigid foamed plastic refers to the foamed plastic that has no flexibility, high compression hardness, and can produce deformation when the stress reaches a certain value, but cannot be restored after the stress is relieved.ISOIt is also stipulated to compress it to50%After relieving the pressure again, the thickness decreases10%The above foam plastics are hard foam plastics. We often use its thermal insulation and mechanical properties for related purposes. Representative products are polystyrene foam, rigid polyurethane foam, phenolic, amino, epoxy, thermosetting acrylate resin and rigid PVC foam. Can be used as insulation material, sandwich material, packaging material, sound insulation and shock resistant material, building material, etc.

Characteristics of foam plastics

(1)Low bulk density can reduce packaging weight and lower transportation costs;

(2)Excellent absorption of impact and vibration energy, used for cushioning and shock-absorbing packaging, can greatly reduce product damage;

(3)Strong adaptability to temperature and humidity changes, able to meet the requirements of general packaging situations;

(4)Low water absorption rate, low moisture absorption, good chemical stability, will not corrode the contents itself, and has strong tolerance to chemicals such as acid and alkali;

(5)Low thermal conductivity, suitable for insulation packaging, such as ice cream cups, fast food containers, and insulated fish boxes;

(6)The molding process is convenient, and various foam liners, foam blocks, sheets, etc. can be made by molding, extrusion, injection and other molding methods. It is easy to carry out secondary molding processing, for example, foam plate can be made into various fast food containers through thermal molding. In addition, the foam plastic block can also be self bonded with adhesive or bonded with other materials to make various cushion pads.

HX-TPModel foam closed cell rate meterThe all stainless steel metal pipeline is a fully automatic analytical instrument that uses the gas expansion displacement method to detect the opening rate, closing rate, cutting correction opening rate, and cutting correction closing rate of foaming materials, hard foam, core, metal and other materials. The instrument is mainly used in insulation materials, sound insulation materials, metal materials, oil exploration and other industries, and can test polyurethane foam, phenolic foam, core, metal blocks, soil blocks and other substances.

Test Principle

Adopting Archimedes' principle--Gas expansion displacement method, utilizing small molecule inert gases（HeorN2）As a medium, through the ideal gas state equation:PV=nRTCalculate the volume of gas displaced by the test chamber sample to accurately measure the true volume of the sample (including closed pores), and then calculate the opening and closing porosity based on the appearance volume of the material and the volume before foaming.

The gas expansion displacement method replaces liquid with gas to determine the volume displaced by the sample. This method can avoid testing errors caused by sample dissolution in the immersion method and has the advantage of not damaging the sample. Because gas can penetrate the extremely small pores and irregular pores on the surface of the sample, the measured sample volume is closer to the true volume of the sample, which can be used to calculate the opening and closing porosity of the sample.

HX-TPModel foam closed cell rate meterperformance parameters

Main functions: opening and closing porosity, porosity (for block materials such as foam materials, rock cores, metal components, etc.), in compliance withGB/T 10799-2008，ASTM D6226-2005，ISO4590：2002；

Real volume (various non-volatile, non corrosive solids and liquids, including closed pores);

Test accuracy: Accuracy error ≤±0.02%Repetitive error ≤0.02%, division value:0.01%；

Pressure range:0KPa-100KPaUsers can freely set the pressure value to reduce the error caused by deformation of the analyzed sample due to pressure;

Pressure accuracy: high-precision imported silicon thin film capacitive pressure sensor,Accurate to actual readings 0.1％,Superior to full range 0.1％；

Test speed:2-5minComplete the entire testing process;

Test scope: It can measure the opening and closing porosity of materials such as foam, metal, and rock cores;

sample product Tube: Standard configuration26*26*51mmSpecification sample tube (according to national standards)GB/T10799-2008Request for production); Suitable for sizes made according to standards25*25*50mmThe testing of rectangular samples can effectively utilize the space of the sample pool and reduce measurement errors caused by insufficient space utilization;

Test gas:40Elevated pure helium gas, purity ≥99.999%Nitrogen and other gases are optional;

Core accessories: * Valve and silicon thin film pressure sensor;

Data processing:Dual control system, can be connected to a computer for use or used independently, users can switch freely according to their needs;

Technical Features

Dual control system, which can be connected to a computer through a serial port and operated through computer software; The instrument itself is equipped with a microcomputer touch screen control system, and the instrument can also be operated through the touch screen. Both operation modes are fully automated, without the need for manual supervision, and automatically generate and save test results. The dual control system can provide users with more convenient operation methods. Users can switch operation modes at any time according to their needs, and both systems have full voice prompts throughout the process;

The sample tube can be directly used as a testing chamber, which can effectively utilize the volume of the testing chamber and significantly improve the testing accuracy. Sample tubes of different volumes can simultaneously meet the needs of micro volume and large volume sample loading, in order to achieve the goal of improving testing accuracy;

Sample tube automatic installation, *'s automatic installation device, simply place the sample tube in position, and the instrument automatically installs the sample tube to the connection port, making the operation more convenient and avoiding testing errors caused by manual installation of the sample tube.

*Pneumatic valve, no heating problem, eliminates the impact of electromagnetic valve heating on test accuracy;

Integrated modular pipeline, with no pipeline joints between valves, reducing leakage points, uniform temperature field, and leakage rate below 10-10Pa * m3/s;

Automatic sealing inspection of the gas path system, automatic judgment of whether there is air leakage in the reference chamber and sample tube, ensuring the accuracy of the test results;

Through the control unit of the operation interface, the actions of various hardware components of the instrument can be controlled, which helps operators understand the working principle of the instrument and timely discover the fault point when the instrument malfunctions, facilitating subsequent inspection and maintenance.

After the test is completed, the system automatically returns to normal pressure to prevent sample splashing when disassembling the sample tube;

Size:

Long:350mm; Width:350mm, High:460mmNet weight:22kg