Method for determining solid content of ABS by continuous bulk polymerization process

A determination method and technology of solid content, which can be applied in the direction of removing a certain component and weighing, etc., to solve problems such as affecting the test results.

Active Publication Date: 2016-05-04
NORTH HUAJIN CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is the problem that residual monomers and a small amount of initiator in sample processing affe...

Method used

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  • Method for determining solid content of ABS by continuous bulk polymerization process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1 g of a sample with a solid content of 30% was weighed, and 10.1 g of a mixed solvent (5 g of toluene, 5 g of methyl ethyl ketone, 0.1 g of hydroquinone) was added under stirring. After the sample was completely dissolved, the sample solution was added dropwise to 100 g of methanol liquid under strong stirring conditions. After thorough mixing, statically separate layers, separate the polymer phase through a filter, then put the polymer phase and the filter together in an oven, place at 100 ° C for 1 hour, then cool to room temperature to weigh the polymer mass, calculate This gives a solids content of 30.5%.

Embodiment 2

[0029] 1 g of a sample with a solid content of 50% was weighed, and 10.1 g of a mixed solvent (5 g of toluene, 5 g of methyl ethyl ketone, 0.1 g of hydroquinone) was added under stirring. After the sample was completely dissolved, the sample solution was added dropwise to 100 g of methanol liquid under strong stirring conditions. After thorough mixing, statically separate layers, separate the polymer phase through a filter, then put the polymer phase and the filter together in an oven, place at 100 ° C for 1 hour, then cool to room temperature to weigh the polymer mass, calculate This gave a solids content of 50.4%.

Embodiment 3

[0031] 4 g of a sample with a solid content of 70% was weighed, and 50.1 g of a mixed solvent (25 g of toluene, 25 g of methyl ethyl ketone, 0.1 g of hydroquinone) was added under stirring. After the sample was completely dissolved, the sample solution was added dropwise to 500 g of methanol liquid under strong stirring conditions. After thorough mixing, statically separate layers, separate the polymer phase through a filter, then put the polymer phase and the filter together in an oven, place at 100 ° C for 1 hour, then cool to room temperature to weigh the polymer mass, calculate This gave a solids content of 71.1%.

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Abstract

The invention discloses a method for determining solid content of ABS by continuous bulk polymerization process. A sample is added into a certain amount of a mixed solvent with stirring, in order to dissolve more fully, a micro amount of hydroquinone or TBC (p-tert-Butylcatechol) is added; after the sample is completely dissolved with strong stirring, and the sample is added into a methanol solution drop by drop; the sample is allowed to stand after fully mixing for demixing, and a polymer phase is separated by filtering; the polymer and a filter are placed into a baking oven for drying, and the polymer and the filter are placed in a dryer for natural cooling at room temperature; mass of solids is weighed, and solid content of the sample is calculated. The method can effectively prevent the problem that monomers and a few initiators are remained after treatment of the sample, which can influence the test results.

Description

technical field [0001] The invention relates to the technical field of ABS production, in particular to a method for determining the solid content of ABS by a bulk method, which can accurately measure the solid content of the bulk ABS. Background technique [0002] ABS resin refers to the graft copolymer of polybutadiene rubber with styrene and acrylonitrile. It has a complex two-phase structure, in which the matrix resin SAN is used as the continuous phase, and the rubber is dispersed in the matrix resin in the form of particles as the dispersed phase. The performance of ABS resin has been significantly improved due to the existence of the rubber phase, and its own impact resistance can be improved several times or even ten times. ABS resin has the characteristics of high impact resistance, high surface hardness, dimensional stability, heat resistance, chemical resistance and good electrical properties. It is easy to form and has excellent machinability. Products and othe...

Claims

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Application Information

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IPC IPC(8): G01N5/04
CPCG01N5/04
Inventor 王益波袁博胡世秋郝春波刘万胜吕天一周川李耀波范铁军李新杰聂中方张延涛王楠韩丽君朱勇飞魏尧
Owner NORTH HUAJIN CHEM IND CO LTD
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