Phase-changed heat insulation polyolefin foam material and preparation method thereof

A technology of polyolefin foam and polyolefin resin, which is applied in the field of phase change thermal insulation polyolefin foam material and its preparation, to achieve the effect of improving sustainability

Inactive Publication Date: 2013-05-15
TAISHAN SPORTS IND GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the application of phase change materials and microcaps

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0040] Example 1: Preparation of phase change microcapsules

[0041] (1) Mix 40 kg of n-tetradecane and 2 kg of sodium dodecyl benzene sulfonate, emulsify into an emulsion under a high-speed emulsifier, the speed of the high-speed emulsifier is 1000r / min, and the emulsification time is 5min;

[0042] (2) Add 20kg of melamine-formaldehyde prepolymer into the emulsion, stir evenly, adjust pH to 3.5 with acetic acid, react at 70℃ for 0.5h, stirring speed 500r / min;

[0043] (3) Raise the temperature to 90°C, continue the reaction for 1 hour, and stir at 500 r / min.

[0044] After passing steps (1) and (2), phase change microcapsules with n-tetradecane as the core and melamine-formaldehyde resin as the single-layer capsule wall can be prepared; through steps (1) to (3), it can be prepared A phase change microcapsule with n-tetradecane as the capsule core and melamine-formaldehyde resin as the multi-layer capsule wall.

Example Embodiment

[0045] Example 2: Preparation of phase change microcapsules

[0046] (1) Mix 10kg of paraffin wax and 6kg of Tween emulsifier, emulsify into an emulsion in a high-speed emulsifier, the speed of the high-speed emulsifier is 3000r / min, and the emulsification time is 5min;

[0047] (2) Add 60kg of urea-formaldehyde prepolymer into the emulsion, stir evenly, leave it for 2h, continue stirring during this period, and stir at 2500 r / min. ;

[0048] (3) Add 1kg of urea-formaldehyde resin curing agent ammonium chloride, stir evenly, adjust the PH value of 2 to 3 with acetic acid, react at 80°C for 1 hour, and stir at 2500 r / min;

[0049] (4) Raise the temperature to 90°C, continue the reaction for 1 hour, and stir at 2500 r / min.

[0050] Through steps (1) to (3), phase change microcapsules with paraffin as the core and urea-formaldehyde resin as the single-layer wall can be prepared; through steps (1) to (4), the multi-layer urea-formaldehyde resin can be prepared. Phase change microcapsules...

Example Embodiment

[0051] Example 3: Preparation of phase change microcapsules

[0052] (1) Take 10kg of gelatin and 25kg of gum arabic, respectively prepare 15% aqueous solutions, and heat up to 55°C;

[0053] (2) Take 30kg of n-octadecane and 5kg of sorbitan fatty acid ester and mix, emulsify into an emulsion under a high-speed emulsifier, the speed of the high-speed emulsifier is 1000r / min, and the emulsification time is 5min;

[0054] (3) Add the gelatin solution, adjust the pH to 4.0 with citric acid, stir evenly, keep the temperature of the system at 55°C, and react for 2 hours;

[0055] (4) Add the prepared gum arabic melt, adjust the pH to 3.5 with citric acid, stir evenly, keep the temperature of the system at 55°C, and react for 5 hours.

[0056] Through steps (1) to (3), phase change microcapsules with n-octadecane as the core and gelatin as the monolayer wall can be prepared; through steps (1) to (4), gelatin-arabic Gum is a phase change microcapsule with a multilayer capsule wall.

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PUM

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Abstract

The invention relates to a phase-changed heat insulation polyolefin foam material and a preparation method thereof. The phase-changed heat insulation polyolefin foam material is prepared by carrying out the operations including mixing, melt extrusion, preheating and foaming on raw materials including phase-changed microcapsules, polyolefin resin, a foaming agent, a cross-linking agent, a blowing promoter, a color masterbatch, an antiager and a processing aid. When the temperature is reduced, the phase of the phase-changed material can be changed, heat is released, and thus, the environment temperature is regulated. Meanwhile, a microcapsule technology is adopted, the phase-changed material is used as a capsule core material to be wrapped inside a capsule wall, and thus, the loss of the phase-changed capsule core material from a porous foam material is reduced, and the continuity of a heat insulation effect is improved.

Description

technical field [0001] The invention relates to a thermal insulation material and a preparation method thereof, in particular to a phase-change thermal insulation polyolefin foam material and a preparation method thereof. Background technique [0002] Polyolefin plastics have a wide range of applications, have good physical, chemical and mechanical properties, good toughness, flexibility and cushioning properties, and have properties such as electrical insulation and heat insulation. They are widely used in packaging, chemical industry, construction and other fields. Polyolefin foams are widely used and one of the first foams to be successfully produced. As early as 1941, DuPont of the United States successfully prepared LDPE foam by using the nitrogen method. After decades of development, polyolefin foams have matured and diversified in terms of varieties and applications. With the continuous deepening of theoretical research and the advancement of foaming technology, foa...

Claims

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Application Information

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IPC IPC(8): C08L23/00C08K9/10C08J9/10B01J13/02C09K5/14
Inventor 杨小兵龙国荣卞志勇李秀平李胜业
Owner TAISHAN SPORTS IND GRP
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