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A kind of preparation method of weather-resistant tough white latex

A white latex, weather-resistant technology, applied in adhesive types, monocarboxylate copolymer adhesives, adhesive additives, etc., can solve problems such as creep, poor toughness, and poor frost resistance, and achieve durability Good, low cost, short curing time effect

Active Publication Date: 2019-02-19
常州威斯双联科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation steps of the present invention are simple and the cost is low; fully utilizing the kelp extract to partially replace the polyvinyl alcohol to prepare the white latex, which is highly targeted and effectively solves its creep phenomenon at high temperature, poor frost resistance at low temperature, and The problem of poor toughness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018]First, weigh 300g of fresh kelp, cut it manually into 3×3cm pieces, add the resulting pieces into a cast iron pot filled with 2L deionized water, heat and boil for 10min, filter while it is hot, and then transfer the filtered kelp pieces into stone Grind in the mill for 15 minutes, mix 1L of deionized water during the grinding process, and collect the kelp slurry; measure 800mL of the kelp slurry obtained above, add it to a fermenter filled with 300mL of deionized water, and then add 80g of secondary sedimentation tank activated sludge, Turn on the agitator of the fermenter, stir and mix at a speed of 600r / min for 10min, then pass compressed air into the fermenter at a rate of 3mL / min, and ferment for 24 hours at a temperature of 40°C and a speed of 120r / min to obtain a mixed fermentation The mixed fermented product obtained above was transferred into a steamer, steamed at 90°C for 15 minutes, then transferred to an ultrasonic oscillator while hot, ultrasonically extracte...

example 2

[0021] First, weigh 400g of fresh kelp, cut it manually into 3×3cm pieces, add the resulting pieces into a cast iron pot filled with 3L of deionized water, heat and boil for 13min, filter while hot, and then transfer the filtered kelp pieces into stone Grind in the mill for 18 minutes, mix 2L of deionized water during the grinding process, and collect the kelp slurry; measure 900mL of the kelp slurry obtained above, add it to a fermenter filled with 350mL of deionized water, and then add 90g of secondary sedimentation tank activated sludge, Turn on the agitator of the fermenter, stir and mix at a speed of 700r / min for 13min, then pass compressed air into the fermenter at a rate of 4mL / min, and ferment for 30h at a temperature of 41°C and a speed of 140r / min to obtain a mixed fermentation The mixed fermented product obtained above was transferred into a steamer, steamed at 93°C for 18 minutes, then transferred to an ultrasonic oscillator while hot, extracted ultrasonically with ...

example 3

[0024] First, weigh 500g of fresh kelp, cut it manually into 3×3cm pieces, then put the resulting pieces into a cast iron pot filled with 3L of deionized water, heat and boil for 15min, filter while it is hot, and then transfer the filtered kelp pieces into stone Grind in the mill for 20 minutes, mix 2L of deionized water during the grinding process, and collect the kelp slurry; measure 1000mL of the kelp slurry obtained above, add it to a fermenter filled with 400mL of deionized water, and then add 100g of secondary sedimentation tank activated sludge, Turn on the agitator of the fermenter, stir and mix at a speed of 800r / min for 15min, then pass compressed air into the fermenter at a rate of 5mL / min, and ferment for 36h at a temperature of 42°C and a speed of 160r / min to obtain a mixed fermentation The mixed fermented product obtained above was transferred into a steamer, steamed at 95°C for 20 minutes, then transferred to an ultrasonic oscillator while hot, extracted ultraso...

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Abstract

The invention discloses a method for preparing weather-proof tough white emulsion, and belongs to the technical field of white emulsion preparation. Fresh kelp is cut into pieces, water is added to be boiled, grinding is carried out, kelp pulp is prepared, the kelp pulp, secondary sedimentation tank activated sludge and the like are mixed and fermented, and the obtained mixed fermented product is prepared into concentrated slime through boiling, ultrasonic extraction and filtering concentration; glacial acetic acid and the like are added, after stirring for reacting, the product is mixed with cold water, filtering is carried out to obtain a filter cake, the filter cake is dried to obtain maize-yellow solids, polyvinyl alcohol is added for mixing, the mixture, vinyl acetate and the like are stirred for reacting, and the weather-proof tough white emulsion is prepared. The preparation steps are simple, cost is low, and the obtained product is good in durability and short in curing time. Kelp extract is fully utilized for partially replacing polyvinyl alcohol to prepare the white emulsion, pertinency is high, and the weather fastness and impact resistance of the white emulsion are effectively improved.

Description

technical field [0001] The invention relates to a preparation method of weather-resistant tough white latex, which belongs to the technical field of white latex preparation. Background technique [0002] White latex is one of the water-soluble adhesives with the widest application, the largest amount, and the longest history. It is a thermoplastic adhesive prepared by polymerization of vinyl acetate monomer under the action of an initiator. Can be cured at room temperature, fast curing, high bonding strength. It can be widely used in bonding paper products (wallpaper), and can also be used as an adhesive for waterproof coatings and wood. It can also be widely used in printing and binding and furniture manufacturing. It can be used as an adhesive for paper, wood, cloth, leather, ceramics, etc. It can also be used as a modifier of adhesives such as phenolic resin and urea-formaldehyde resin, and used in the manufacture of polyvinyl acetate latex paint. At present, white late...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F118/08C09J131/04C09J11/08
CPCC08F118/08C08L2205/03C09J11/08C09J131/04C08L29/04
Inventor 董晓邹宇帆许洪祥
Owner 常州威斯双联科技有限公司
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