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A kind of preparation technology and detection method of microcapsule toughened and reinforced polypropylene composite material

A composite material and preparation process technology, which can be used in the analysis of materials, the use of stable tension/pressure to test the strength of materials, and measurement devices. It can solve the problems of poor low temperature impact resistance, easy aging, etc. The effect of improving processability

Active Publication Date: 2022-07-12
SHAANXI SCI TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes PP have good mechanical strength, corrosion resistance, and heat resistance, but it also has the disadvantages of poor low temperature impact resistance and easy aging.

Method used

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  • A kind of preparation technology and detection method of microcapsule toughened and reinforced polypropylene composite material
  • A kind of preparation technology and detection method of microcapsule toughened and reinforced polypropylene composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Preparation of ST-UF microcapsules:

[0052] 1) Weigh urea and formaldehyde solution according to the mass ratio of 10:18, add both into the flask, adjust pH=8 with triethanolamine, then put the flask into a constant temperature water bath at 74°C, stir and react for 1h, obtain capsule wall prepolymer;

[0053] 2) According to the mass parts ratio, take by weighing 100 parts of styrene, 37 parts of epoxy resin, 4 parts of acetone and 39 parts of tributyl phosphate, add in the three-necked flask and stir well, add 188 parts of 1% Twelve Aqueous sodium alkyl benzene sulfonate solution, 2 parts of n-octanol, and stirring continuously for 27 minutes at 30°C and 750rpm to form a stable oil-in-water (O / W) emulsified solution, namely the core material emulsion;

[0054] 3) Capsule wall coating capsule core: add the solution of capsule wall prepolymer prepared in 1) into the core material emulsion under stirring condition, and adjust the pH=3 of the system with dilute H2SO4, a...

Embodiment 2

[0061] Preparation of ST-UF microcapsules:

[0062] 1) Weigh urea and formaldehyde solution according to the mass ratio of 10:21, add both into the flask, adjust pH=7 with triethanolamine, then put the flask into a constant temperature water bath at 73°C, stir and react for 1h, obtain capsule wall prepolymer;

[0063] 2) According to the mass parts ratio, weigh 100 parts of styrene, 30 parts of epoxy resin, 5 parts of acetone and 38 parts of tributyl phosphate, add them into the three-necked flask and stir well, add 185 parts of 1% Twelve Aqueous sodium alkyl benzene sulfonate solution, 2.5 parts of n-octanol, and continued stirring for 26 minutes at 30 ° C and 500 rpm to form a stable oil-in-water (O / W) emulsified solution, that is, the core material emulsion;

[0064] 3) Capsule wall coating capsule core: add the solution of capsule wall prepolymer prepared in 1) into the core material emulsion under stirring conditions, and adjust the pH=3 of the system with dilute H2SO4, ...

Embodiment 3

[0067] Preparation of ST-UF microcapsules:

[0068] 1) Weigh urea and formaldehyde solution according to the mass ratio of 10:20, add both into the flask, adjust pH=7 with triethanolamine, then put the flask into a constant temperature water bath at 75°C, stir and react for 1h, obtain capsule wall prepolymer;

[0069] 2) According to the mass parts ratio, take by weighing 100 parts of styrene, 35 parts of epoxy resin, 4 parts of acetone and 40 parts of tributyl phosphate, add them into the three-necked flask and stir well, add 190 parts of 1% Twelve Aqueous sodium alkyl benzene sulfonate solution, 2 parts of n-octanol, and stirring continuously for 27 min at 30°C and 600 rpm to form a stable oil-in-water (O / W) emulsified solution, that is, the core material emulsion;

[0070] 3) Capsule wall coating capsule core: add the capsule wall prepolymer solution prepared in 1) into the core material emulsion under stirring conditions, and adjust the pH=4 of the system with dilute H2SO...

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Abstract

The invention discloses a preparation process and a detection method of a microcapsule toughened and reinforced polypropylene composite material. ST-UF microcapsules; then mix polypropylene / microcapsule composite materials, add 3 to 5 parts of ST-UF microcapsules to every 100 parts of PP powder in parts by mass, and carry out mixing after mixing. granules to obtain a polypropylene / microcapsule composite material. The advantage of the present invention is that the introduction of ST-UF microcapsules into the PP resin can significantly improve the processing performance of PP. In addition, the thermal stability and shear resistance of ST‑UF microcapsules are good, which fully meet the processing conditions of PP materials, and will not affect the processing conditions of PP materials. The processing and use of PP cause adverse effects.

Description

technical field [0001] The invention belongs to the technical field of polypropylene composite material preparation, and in particular relates to a preparation process and a detection method of a microcapsule toughened and reinforced polypropylene composite material. Background technique [0002] Polypropylene (PP) molecular chain has three configurations: isotactic, syndiotactic and random. Industrial products are mainly isotactic and syndiotactic. Due to the good structural regularity of the molecular chain, PP has a high Crystallinity, and exists mainly in the form of spherulites. This makes PP have good mechanical strength, corrosion resistance and heat resistance, but also has the disadvantages of poor low temperature impact resistance and easy aging. Therefore, the modification of PP materials has always been an important topic in the application field of PP. [0003] PP modification includes chemical modification and physical modification. The physical modification ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08K9/10C08K5/01G01N3/08G01N5/04G01N11/14G01N15/02
CPCC08K5/01C08K9/10G01N3/08G01N5/04G01N15/02G01N11/14G01N2203/0017G01N2203/0067G01N2203/0075C08L23/12
Inventor 董金虎李新蕊张开来张文涛程敏贤贺志荣袁新强
Owner SHAANXI SCI TECH UNIV
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