CN106353216A - Inorganic or mechanical impurity test method in waste polyester textiles - Google Patents

Abstract

The invention relates to an inorganic or mechanical impurity test method in waste polyester textiles. The inorganic or mechanical impurity test method includes: dissolving a sample with a diethylene glycol reagent under a certain condition and filtering insoluble substances; calculating the specific value of the mass difference value before and after dissolution to mass of the sample to acquire the content of tested impurities. With the method, the content of the inorganic or mechanical impurities in the waste polyester textiles can be acquired, and continuous and stable production requirements of same kinds of raw materials can be met through blending.

Description

The method of testing of inorganic or content of impurities in a kind of Waste Polyester textile

Technical field

The present invention relates in a kind of Waste Polyester textile inorganic or content of impurities method of testing.

Background technology

China is the maximum textile production in the whole world and consumption market at present, and the textile processing total amount of China in 2015 surpasses 50000000 tons, more than 20,000,000 tons, Waste Polyester textile accounting therein is up to 70% to the waste spinning fabric of generation, adds several years ago Cumulative stock, only just up to more than 200,000,000 tons of the storage of Waste Polyester textile.But in view of, Waste Polyester textile source is complicated, The uneven and existing production technology level of foam material quality of processing is limited, and large-scale application or high-value-use also exist larger Difficult.Be mainly reflected in, the foam material impurity content of Waste Polyester textile processing is high, containing more organic pigment degradable, point Pick thoroughly not contain and be mixed with natural fiber and other Waste Polyester fibers etc..Also there is not a kind of method can measure Waste Polyester weaving at present Inorganic or content of impurities in product.

Content of the invention

In order to solve above-mentioned technical problem, it is an object of the invention to provide inorganic or mechanical in a kind of Waste Polyester textile The method of testing of impurity content, the method can obtain inorganic in Waste Polyester textile or content of impurities, can make of the same race Raw material is meeting the demand of continuous and stable production using by allotment.

In order to realize above-mentioned purpose, present invention employs following technical scheme:

The method of testing of inorganic or content of impurities in a kind of Waste Polyester textile, the method comprises the following steps:

1) weigh the foam material of 500.0g from the sample after test moisture, pulverized in pulverizer successively；After pulverizing Cross through 16 eye mesh screens after foam material mixing and mix again after net, therefrom weighing quality afterwards is 75g sample, accurately to 0.1mg, puts into In the flask of 250ml, measure 150ml diethylene glycol with graduated cylinder afterwards and pour in flask；

2) open fume hood, after reflux condensation mode glass tubing is contained on flask, be fixed in heater with iron stand On, so

After open heater on and off switch, open condensing tube water inlet switch when diethylene glycol seethes with excitement and condensed；

3) after foam material is completely dissolved, close heater power supply and condensed water, then move condensing tube at once, at once Lysate is poured slowly into and is placed on the 150 mesh wire nettings that waste liquid is collected on device, slightly firmly makes wire netting center be in arcuation, it is to avoid Lysate flows out, and the quality of wire netting is m1, accurately to 0.1mg；

4) add 50ml diethylene glycol, repeat step 2 and then in flask), step 3) cleaning the insoluble of residual in flask Thing, treats to fall behind under dripless, puts into the baking oven that temperature is 230 DEG C constant temperature 20min, take out afterwards and be cooled to room temperature, then claim Wire netting quality m2, accurately to 0.1mg；

5) close fume hood；

6) result calculates, and computing formula is as follows:

$w=\frac{(m_2-m_1)}{m_0}\×{10}^6$

In formula:

The impurity content of w foam material, unit is milligrams per kilogram (mg/kg)；

m₀The quality of sample after drying, unit is gram (g)；

m₁The quality of wire netting, unit is gram (g).

m₂Wire netting and the quality of impurity, unit is gram (g).

Due to employing above-mentioned technical scheme, the method can obtain inorganic or mechanical in Waste Polyester textile the present invention Impurity content, can make homogeneous raw material meet the demand of continuous and stable production using by allotment.

Specific embodiment

Instrument and equipment: with the 250ml glass flask of backflow anti-condensation glass pipe；Iron stand, 250ml graduated cylinder, adjustable heating dress Put, the 150 mesh wire nettings of φ 7cm～8cm, high speed disintegrator, 20 eye mesh screens, waste liquid collect device (container), fume hood, glass Folder；Electronic balance: scale division value 0.1mg；Baking oven: room temperature to 300 DEG C, 1.0 DEG C of precision；Reagent: diethylene glycol.

1. weigh the foam material of 500.0g from the sample after test moisture, pulverized in pulverizer successively.After pulverizing Cross through 16 eye mesh screens after foam material mixing and mix again after net, therefrom weigh quality afterwards for 75g sample (quality m0) (accurately extremely 0.1mg), put in the flask of 250ml, measure 150ml diethylene glycol with graduated cylinder afterwards and pour in flask.

2. open fume hood, after reflux condensation mode glass tubing is contained on flask, be fixed in heater with iron stand On, then open heater on and off switch, open condensing tube water inlet switch when diethylene glycol seethes with excitement and condensed.

3. after foam material is completely dissolved (about 10min), close heater power supply and condensed water.Then move condensation at once Pipe, at once lysate being poured slowly into 150 mesh wire nettings being placed on waste liquid collection device (container) (slightly firmly makes wire netting Center is in arcuation, it is to avoid lysate flows out) upper (quality m₁) (accurately to 0.1mg).

4. add 50ml diethylene glycol and then in flask, repeat c.4.2～c.4.4 to clean the insoluble of residual in flask Thing, treats to fall behind under dripless, puts into the baking oven that temperature is 230 DEG C constant temperature 20min, take out afterwards and be cooled to room temperature, then claim Its quality (m₂) (accurately to 0.1mg).

5. close fume hood.

6. result is calculated as follows:

$w=\frac{(m_2-m_1)}{m_0}\×{10}^6$

In formula:

The impurity content of w foam material, unit is milligrams per kilogram (mg/kg)；

m₀The quality of sample after drying, unit is gram (g)；

m₁The quality of wire netting, unit is gram (g)；

m₂Wire netting and the quality of impurity, unit is gram (g).

Claims (1)

1. a kind of method of testing of inorganic in Waste Polyester textile or content of impurities it is characterised in that the method include following Step:

1) weigh the foam material of 500.0g from the sample after test moisture, pulverized in pulverizer successively；Foam material after pulverizing Cross through 16 eye mesh screens after mixing and mix again after net, therefrom weighing quality afterwards is 75 g samples, accurately to 0.1mg, puts into In the flask of 250ml, measure 150ml diethylene glycol with graduated cylinder afterwards and pour in flask；

2) open fume hood, after reflux condensation mode glass tubing is contained on flask, be fixed on the heating with iron stand, so

After open heater on and off switch, open condensing tube water inlet switch when diethylene glycol seethes with excitement and condensed；

3) after foam material is completely dissolved, close heater power supply and condensed water, then move condensing tube, at once dissolving at once Liquid is poured slowly into and is placed on the 150 mesh wire nettings that waste liquid is collected on device, slightly firmly makes wire netting center be in arcuation, it is to avoid dissolving Liquor stream goes out, and the quality of wire netting is m1, accurately to 0.1mg；

4) add 50ml diethylene glycol, repeat step 2 and then in flask), step 3) to clean the insoluble matter of residual in flask, treat Fall behind under dripless, put into the baking oven that temperature is 230 DEG C constant temperature 20min, take out afterwards and be cooled to room temperature, then claim metal Net quality m2, accurately to 0.1mg；

5) close fume hood；

6) result calculates, and computing formula is as follows:

In formula:

The impurity content of w foam material, unit is milligrams per kilogram (mg/kg)；

m ₀The quality of sample after drying, unit is gram (g)；

m ₁The quality of wire netting, unit is gram (g)；

m ₂Wire netting and the quality of impurity, unit is gram (g).