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Method for rapidly determining content of flame retardant in inorganic flame-retardant cellulose fibers

A cellulose fiber, inorganic flame retardant technology, applied in the field of rapid test of flame retardant content, can solve problems such as poor method versatility, chemical discharge, environmental pollution and so on

Active Publication Date: 2021-04-20
潍坊欣龙生物材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method shortens the test time of samples to a certain extent, it increases the use of chemicals, especially the use of highly corrosive concentrated sulfuric acid. There are certain safety hazards in the sample digestion operation, and the discharge of chemicals will also bring environmental pollution. Pollution; In addition, this method needs to formulate corresponding chemical analysis methods according to the types of inorganic flame retardants in flame-retardant fibers, and the method has poor versatility

Method used

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  • Method for rapidly determining content of flame retardant in inorganic flame-retardant cellulose fibers
  • Method for rapidly determining content of flame retardant in inorganic flame-retardant cellulose fibers
  • Method for rapidly determining content of flame retardant in inorganic flame-retardant cellulose fibers

Examples

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Effect test

Embodiment 1

[0069]Example 1 Anifan flame retardant cellulose fiber (main flame retardant component is SiO2Fast measurement of flame retardant content

[0070]The implementation process of this embodiment is as follows:

[0071](1) Collect fiber samples with representative different flame retardants: 10 to 15 fiber samples from normal production batch and production transition batch, each sample is about 100g, installed The seal is stored in the plastic bag for testing. The flame retardant content of the sample is between 10% and 35%, and the distribution is as uniform as possible;

[0072](2) Determination of flame retardation of the burning residue specified by FZ / T 52013-2011 "Inorganic Flame Retardite Short Fiber" Appendix A Division content;

[0073](3) Determination of the nuclear magnetic FID signal of the sample: Place the sample before the test is placed in the test chamber for 30min (depending on the sample temperature). After mixing the sample, accurately weigh the sample (accurate to 0.2 mg) s...

Embodiment 2

[0126]Example 2 Rapid measurement of the content flame retardant content at a non-calibration temperature

[0127]The sample (sample weight of a sample) of the known flame retardant is known, and the temperature adjustment is performed by a water bath or other constant temperature apparatus, and the working curve and operation method established in Example 1 are obtained, and the sample temperature is 17 ° C, 20 ° C. The measurement results at 25 ° C, 28 ° C, 30 ° C, 34 ° C, 38 ° C. Determination value at different temperatures xTFor the ordinate, the temperature T is the abscissa, and the flame retardant content measurement value varies with the temperature of the sample, such asFigure 6Indicated. It can be seen that the measurement value of the flame retardant content determination value of the sample increases with the increase of temperature, and the relationship can be expressed as: in the case of the temperature of 15 ° C to 40 ° C.

[0128]XT-X0= K6(T-T0) (7)

[0129]In XTFlame retard...

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Abstract

The invention provides a method for rapidly determining the content of a flame retardant in inorganic flame-retardant cellulose fibers. The content of the flame retardant in the inorganic flame-retardant cellulose fibers is rapidly determined by adopting a low-field pulse nuclear magnetic resonance method. The rapid determination method established on the basis of the low-field pulse nuclear magnetic resonance technology has the advantages of simplicity in operation, short test time, high precision, good stability and accurate and reliable measurement result, the quantity of samples required by the test is small, the morphological structure of the samples cannot be damaged in the test process, the samples can be recycled, and resources are saved; the determination method disclosed by the invention is rapid, accurate and good in reproducibility, can be used for simultaneously determining the moisture content and the flame retardant content of an unknown flame-retardant fiber sample at one time, has good conformity between detection data and data obtained by a conventional laboratory determination method, can meet the requirement of rapid analysis and detection of the flame retardant content of a flame-retardant cellulose fiber product, and has good practicability.

Description

Technical field[0001]The present invention belongs to the field of fiber analysis test, and it is related to a rapid test method of flame retardant content of inorganic flame retardant cellulose fibers, and more particularly to a flame retardant of rapid determination of inorganic flame-retardant cellulose fibers based on low field pulse core magnetic resonance. Method of agent content.Background technique[0002]In recent years, due to the increase in fire caused by textiles, the results of the death accident caused by fires have shown that fires caused by indoor ornaments and textiles accounted for the first place. In order to prevent fire, the production of flame retardant fibers have become more and more increasingly attached, and various flame retardant fibers should also be born. Among them, the flame retardant cellulose fibers have a moisture absorbent breathable, comfortable, and good heat resistance. Melting drops, natural degradation after abandonment, has been favored by th...

Claims

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Application Information

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IPC IPC(8): G01N24/08
Inventor 娄善好王文华刘长军张玉梅颜晶
Owner 潍坊欣龙生物材料有限公司
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