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Porous granular instant building glue powder and preparation method thereof

A technology of construction rubber powder and porous particles, applied in the direction of starch adhesives, adhesive types, adhesive additives, etc., can solve the problems of poor solubility in cold water, large volume, poor water resistance, etc., to improve dispersion performance, volume The effect of large area and cost reduction

Active Publication Date: 2014-08-13
广东顺德祁润化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the defects of poor cold water solubility, poor dispersibility and poor water resistance of current construction rubber powder, the present invention provides a porous granular instant construction rubber powder. Compared with similar products, the product of the present invention can quickly absorb water and dissolve due to the existence of porous size structure , large volume, can be uniformly and quickly dispersed in construction putty and mortar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1) Mix 50kg raw tapioca starch, 30kg17-88, 3kg vinyl acetate-ethylene-vinyl chloride copolymer, 2.5kg methyl methacrylate-isooctyl acrylate copolymer, 1kg hydroxypropyl methylcellulose ether, 0.2 Kg of vinyl acetate and 0.2kg of 6000 mesh talc are pre-reacted in the Z100 kneader.

[0037] 2) Open the reduced-reduction screw press idling for 5 minutes, when the temperature of the screw and barrel reaches 120℃, open the circulating cooling water valve, control the temperature of the screw press to maintain at 100-120℃, and continuously add the mixed powder materials to the screw press , The generated steam expands the particles to form a porous and fluffy mass.

[0038] 3) Mix the obtained agglomerated powder with 11kg of nano-level hollow zinc oxide and send it to the horizontal air knife pelletizer, the agglomerated building rubber powder is continuously broken and decomposed to form a porous granular instant building rubber powder.

[0039] Take 10kg of the obtained porous g...

Embodiment 2

[0042] 1) Mix 60kg raw potato starch, 20kg 24-88, 4kg long-chain fatty acid vinyl ester-ethylene copolymer, 3kg butyl acrylate-isooctyl acrylate copolymer, 1.5kg hydroxypropyl methylcellulose ether, 0.2kg ethyl acetate Acid anhydride and 0.1kg of kaolin with a fineness of 5000 mesh are pre-reacted in a Z100 kneader.

[0043] 2) Open the reduced-reduction screw press idling for 5 minutes, when the temperature of the screw and barrel reaches 120℃, open the circulating cooling water valve, control the temperature of the screw press to maintain at 100-120℃, and continuously add the mixed powder materials to the screw press , The generated steam expands the particles to form a porous and fluffy mass.

[0044] 3) Mix the obtained dough-shaped building rubber powder with 20kg of nano-level hollow zinc sulfide zinc oxide and send it to the horizontal air knife pelletizer. The dough-shaped building rubber powder is continuously broken and decomposed to form a porous granular instant buildi...

Embodiment 3

[0048] 1) Combine 55kg raw potato starch, 15kg 24-88, 5kg vinyl acetate-ethylene copolymer, 3kg methyl methacrylate-1,3-butadiene copolymer, 1.5kg hydroxypropyl methyl cellulose ether, 0.4 kg of acetic acid and 0.2 kg of muscovite powder with a fineness of 5000 meshes are pre-reacted in a Z100 kneader.

[0049] 2) Open the reduced-reduction screw press idling for 5 minutes, when the temperature of the screw and barrel reaches 120℃, open the circulating cooling water valve, control the temperature of the screw press to maintain at 100-120℃, and continuously add the mixed powder materials to the screw press , The generated steam expands the particles to form a porous and fluffy mass of building rubber powder.

[0050] 3) Mix the obtained agglomerate with 20kg of nano-scale hollow titanium dioxide and send it to the horizontal air knife granulator. The agglomerated building rubber powder is continuously broken and decomposed to form a porous granular instant building rubber powder.

...

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Abstract

A porous granular instant building rubber powder and a preparation method thereof. The porous granular instant building rubber powder is characterized by the following raw materials (parts by weight): 50-60 parts of starch, 20-30 parts of polyvinyl alcohol, 10-20 parts of release agent, 3-5 parts of vinyl ester polymer 2-3 parts of acrylate polymer, 1-2 parts of hydroxypropyl methyl cellulose ether, 0.2-0.5 parts of water resistance modifier, and 0.1-0.3 parts of nucleating agent. The invention adopts continuous and high-efficiency kneader pre-reaction and instantaneous graft modification of the rubber powder through a reduced-shrinkage screw compressor to obtain a highly water-absorbing porous granular building rubber powder. The rubber powder has fast water absorption and dissolution, water resistance, fast dispersion and good adhesion, and can be widely used in construction materials such as mortar, putty, tile adhesive, white latex, wallpaper adhesive, polypropylene waterproof membrane adhesive, etc. , can replace the traditional redispersible rubber powder.

Description

technical field [0001] The invention relates to an instant building rubber powder, in particular to a porous granular instant building rubber powder applied to building adhesives and a preparation method thereof. Background technique [0002] With the development of building energy-saving and consumption-reducing technologies, building rubber powder has become a necessity to improve the bonding performance of building materials and reduce the amount of cement mortar, and has developed rapidly. Construction adhesives used to be liquid glue prepared with rubber powder, but due to poor storage stability and inconvenient transportation, they were eliminated. At present, they are gradually developing into solid powder rubber powder, which can be directly mixed with water on site. Therefore, construction rubber powder needs to meet technical requirements such as instant dissolution in water, water resistance, high viscosity, strong adhesion, non-toxic and tasteless. [0003] At...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/28C04B24/38C09D5/34C09J103/02C09J129/04C09J11/04C09J11/06
Inventor 陈庆曾军堂
Owner 广东顺德祁润化工有限公司
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