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Method and equipment for measuring total solid matter content of natural rubber latex

A technology of natural rubber latex and total solids, applied in the field of natural rubber, can solve the problems of cumbersome operation, time-consuming, power consumption, etc., and achieve the effects of high measurement accuracy, enlarged area, and convenient operation

Inactive Publication Date: 2013-04-03
刘光辉 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the field of natural rubber measurement and analysis, the determination of the total solid content in latex requires more accurate oven drying, but this method is time-consuming (8-12 hours), power-consuming, and cumbersome to operate. Only suitable for measuring a small number of samples
For a long time, it has been difficult for technicians in this field to find a so-called ideal rapid total solids content determination method that is fast, easy to operate, strong in anti-interference, and the accuracy is closest to the standard oven drying method.

Method used

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  • Method and equipment for measuring total solid matter content of natural rubber latex
  • Method and equipment for measuring total solid matter content of natural rubber latex
  • Method and equipment for measuring total solid matter content of natural rubber latex

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: Operation method

[0029] 1. Use a disposable syringe to drop a small amount of latex sample into a numbered container of rated weight (including foam metal with a weight of ω 0 ), weigh the total weight ω of the sample and the vessel 1 , prepare several samples to be determined according to this method;

[0030] 2. Place the prepared vessel on the heat source in the vacuum system, turn on the vacuum switch, and make the system reach a negative pressure state.

[0031] 3. Use the temperature controller to set the heating temperature to 180-350°C, set a few minutes, and vacuum dry the sample;

[0032] 4. Weigh and measure the dried sample together with the vessel to obtain the weight ω 2 ;Use the following formula to calculate the total solid content α of the sample:

[0033] .

Embodiment 2

[0035] A kind of measuring equipment of the total solid content of natural rubber latex, comprise the metal container 6 that is made of metal foam of rated weight, the electric heating plate 5 of heating metal container 6, described measuring equipment also includes the described metal container 6. A sealed box 1 for vacuuming. The measuring device also includes a temperature, vacuum and other function control knob 3. The temperature, vacuum and other function control knob 3 The electric heating plate 5 and the vacuum pump 2 are controlled, and the measuring equipment also includes a plate weighing system 4 , and the measuring equipment also includes a digital display screen 7 . The metal foam is covered with metal foil 8 on its side and bottom.

Embodiment 3

[0037] The samples were fresh natural rubber latex purchased from the purchase point of the rubber factory on the same day.

[0038] 1. Determination of total solids content by standard oven drying method: use a disposable syringe to take 2 to 3 grams of latex for determination, drying temperature is 70 ° C, time is 10 hours, and three groups of sample tests are done;

[0039] ω 0 : vessel weight;

[0040] ω 1 : The total weight of the container and latex before measurement;

[0041] ω 2 : The total weight of the container and latex after drying;

[0042]

[0043] 2. Determination of total solids content by vacuum drying method (using the method of Example 1 and the equipment of Example 2): use a disposable syringe to take 0.2 to 2 grams of latex for determination, drying temperature 200 ° C, vacuum degree -0.09 Mpa, time 3 minutes, do three sets of sample tests;

[0044] ω 0 : vessel weight;

[0045] ω 1 : The total weight of the container and latex before measureme...

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Abstract

The invention provides a method for measuring the total solid content of natural rubber latex. The method is accurate, fast and easy to operate, and can replace the standard oven drying method. The invention also provides a measuring device for the total solid content of the natural rubber latex.

Description

Technical field [0001] The invention involves the field of natural rubber technology, which specifically involves a measurement method and equipment for a total solid solid content of natural rubber. Background technique [0002] At present, in the field of natural rubber measurement and analysis, the total solid content in the glue milk is determined, and the most accurate use of oven drying method is required, but this method is time -consuming (8-12 hours), power consumption, and tedious operations.It is suitable for measuring a small amount of samples.For a long time, technicians in this field have also been difficult to find a so -called ideal fast total solid solid content measurement method with a fast, easy -to -operate, anti -interference resistance, and closest accuracy, and closest accuracy. Invention content [0003] The purpose of the present invention is to provide a measurement method for the content of natural rubber gels. This method is accurate, fast, and easy ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N5/04
Inventor 刘光辉刘威
Owner 刘光辉
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