CN202735311U

CN202735311U - Test device for determining formaldehyde adsorption and degradation property

Info

Publication number: CN202735311U
Application number: CN 201220264494
Authority: CN
Inventors: 李思; 潘一; 杨双春; 李宝刚; 何俊新
Original assignee: Liaoning Shihua University
Current assignee: Liaoning Shihua University
Priority date: 2012-06-04
Filing date: 2012-06-04
Publication date: 2013-02-13
Anticipated expiration: 2022-06-04

Abstract

A test device for determining formaldehyde adsorption and degradation property is composed of an air inlet system and a reaction box. In the air inlet system, an air compressor, a drying column, a flow meter and a humidity generating bottle are sequentially connected, air coming out of the drying column passes through the flow meter to be divided into two parts, one part passes through the humidity generating bottle and then enters the reaction box, and flow proportion of two parts of air is different, so that humidity in the reaction box can be adjusted. A layer of aluminum foil thin film is wrapped on the outermost layer of the reaction box which is provided with a water bath layer connected with an upper humiture test measuring instrument, a blender and a light source. The water bathing layer is connected with a sample inlet, a sample outlet and a plate placing opening. By means of the test device, formaldehyde adsorption and degradation property of a material can be determined under different test conditions.

Description

A kind of experimental provision for measuring formaldehyde absorbing and degradation property

Technical field

The utility model relates to the determination techniques field of formaldehyde absorbing and degradation property, is a kind of easy and simple to handle specifically, and considers the formaldehyde absorbing of many influence factors and the experimental provision that degradation property is measured.

Background technology

Along with improving constantly of living standard, people are more and more stronger to the requirement of the improvement of living environment.The use of a large amount of ornament materials causes the day by day serious of indoor pollution.Formaldehyde is always extremely people's concern in numerous indoor pollutants.In recent years, many experts and scholars are devoted to prepare the ornament materials with formaldehyde adsorption property or decomposability, but tend to meet difficulty in the process of measuring the material absorption property.

Formaldehyde has volatility, is gas under the normal temperature, therefore there is certain difficulty in the Accurate Determining of its concentration.Although the experimental provision of measuring formaldehyde absorbing and degradation property is arranged at present, and its building block is uncommon in common laboratory, this brings certain difficulty for measuring.In addition, often can not be taken into account fully material formaldehyde absorbing and the influential factor of degradation property.

The utility model content

For formaldehyde absorbing and degradation property that can the Accurate Measurement material in the laboratory, and many influence factors are taken into account, the utility model provides a kind of device, and it is generally common that it has experimental apparatus, and it is thorough that influence factor is considered, the accurate characteristics of experimental result.

The technical scheme that its technical matters that solves the utility model adopts is: a kind of experimental provision for measuring formaldehyde absorbing and degradation property, comprise gas handling system and reaction chamber, it is characterized in that: gas handling system comprises air compressor machine, dry post, flowmeter, Humidity Generator bottle, air compressor machine, dry post, flowmeter and Humidity Generator bottle link to each other successively, finally pass into reaction chamber; Reaction chamber comprises aluminum foil film, water-bath layer, temp .-humidity measuring apparatus, stirrer, light source, water-bath layer, injection port, thief hatch, puts the plate mouth, described reaction chamber is the glass quality, outermost layer parcel aluminum foil film, wall is double-deck, built-in light source and stirrer, and be provided with injection port, thief hatch and put the plate mouth and corresponding rubber plug.Be filled with silica gel in the dry post.Be divided into two parts through flowmeter from dry post air out, a part directly enters reaction chamber, another part enters reaction chamber again through behind the Humidity Generator bottle, and the humidity of the flow proportional difference of two parts air in can the conditioned reaction case wherein fills water in the Humidity Generator bottle.Reaction chamber uses glass to make, outermost layer parcel one deck aluminum foil film, and the light that the light source inside avoiding emits leaks.The reaction tank wall is designed to bilayer, and the centre is used for doing the water-bath layer, for reaction chamber provides certain temperature.The temp .-humidity measuring apparatus that is connected on the reaction chamber can the interior humiture of monitoring reaction case.The stirrer of reaction chamber top can be used for controlling the air velocity in the reaction chamber.Light source in the reaction chamber can be different according to the experiment needs, and change the fluorescent tube of variety classes and intensity.The injection port of reaction chamber side can be used for injecting the formaldehyde gas of certain volume.The thief hatch of reaction chamber can be used for gathering the rear gas of reaction, uses gas chromatograph that concentration of formaldehyde in the gas is analyzed after the sampling.Putting the plate mouth and should be designed to elongated shape on the chamber wall is conducive to plank and puts into.In addition, all openings of reaction chamber all need be mixed corresponding rubber plug, with anti-gas-leak.

The beneficial effect that the utlity model has:

Simple in structure, building block is common experimental apparatus.Easy to operate, and be easy to control.Can consider many influence factors, make evaluation result more convincing.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is structural drawing of the present utility model.

Among the figure: 1 air compressor machine, 2 dry posts, 3 flowmeters, 4 Humidity Generator bottles, 5 reaction chambers, 6 injection ports, 7 temp .-humidity measuring apparatus, 8 stirrers, 9 light sources, 10 put the plate mouth, 11 thief hatchs, 12 water-bath layers, 13 aluminum foil films.

Embodiment

Case study on implementation 1 of the present utility model provides a kind of experimental provision for measuring material formaldehyde absorbing and degradation property, comprises such as this device of Fig. 1: gas handling system and reaction chamber.Gas handling system comprises: air compressor machine 1, dry post 2, flowmeter 3, Humidity Generator bottle 4.Reaction chamber 5 comprises: injection port 6, and temp .-humidity measuring apparatus 7, stirrer 8, light source 9 is put plate mouth 10, thief hatch 11, water-bath layer 12, aluminum foil film 13.

Air compressor machine 1, dry post 2, flowmeter 3, Humidity Generator bottle 4 link to each other successively, and gas is divided into two parts after by flowmeter 3, and wherein a part enters the moisture generating bottle, can recently control humidity in the reactor by regulating two-part flow.Wherein in the dry post 2 silica gel is housed, in the Humidity Generator bottle 4 water is housed.

Reaction chamber 5 usefulness glass are made, and outermost layer is surrounded by aluminum foil film 13, prevent that the light of lamp source emission from leaking; Water-bath layer 12 provides certain temperature for reaction chamber; The stirrer 8 of reaction chamber 5 tops is used for controlling the air velocity in the reactor; The light source 9 of reaction chamber 5 tops can be installed different fluorescent tubes according to the Different Light demand; Temp .-humidity measuring apparatus 7 is used for the humiture in the monitoring reaction device; Injection port 6 on reaction chamber 5 sidewalls is used for adding formaldehyde gas, adds as required the formaldehyde gas of different volumes, regulates different initial concentration of formaldehyde; Put plate mouth 10 and be designed to strip, conveniently advance plate.Opening on all containers all need be worn corresponding rubber plug in addition, with anti-gas-leak.

To put plate mouth 10 and open before the operation, can serve as exhausr port not beginning to test front amplifying board mouth 10.Open air compressor machine 1, wait for that air compressor machine 1 pressure is stable, open afterwards water-bath layer 12 heating arrangement, reaction chamber is heated to temperature required.Start air compressor machine 1, extracting air makes it through super-dry post 2, removes moisture in air.When gas process Humidity Generator bottle 4, can take away portion of water, the reading on the observing response case on the temp .-humidity measuring apparatus 7, the flow of two flowmeters 3 of adjusting is until temp .-humidity measuring apparatus 7 shows needed humiture.Behind system stability, the material model is put into reaction chamber 5, close and put plate mouth 10, close simultaneously air compressor machine 1 and flowmeter 3.Turn on agitator 8 is opened light source 9, uses syringe to inject the formaldehyde gas of certain volume from injection port 6 according to the experiment needs.Behind the certain hour, use syringe from the gas of thief hatch 11 extraction certain volumes, use gas phase to survey spectrometer and analyze the wherein concentration of formaldehyde.

Claims

1. an experimental provision that is used for measuring formaldehyde absorbing and degradation property comprises gas handling system and reaction chamber, and it is characterized in that: gas handling system comprises air compressor machine, dry post, flowmeter, Humidity Generator bottle; Air compressor machine, dry post, flowmeter and Humidity Generator bottle link to each other successively, finally pass into reaction chamber; Reaction chamber comprises aluminum foil film, water-bath layer, temp .-humidity measuring apparatus, stirrer, light source, water-bath layer, injection port, thief hatch, puts the plate mouth, described reaction chamber is the glass quality, outermost layer parcel aluminum foil film, wall is double-deck, built-in light source and stirrer, and be provided with injection port, thief hatch and put the plate mouth and corresponding rubber plug.