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Method for producing particle board from chrome-containing leather shavings

A technology of particle board and chrome leather shavings, which is applied in the field of chromium-containing leather shavings to make particle boards, can solve the problems of inability to realize resource utilization of chromium-containing leather shavings, market capacity limitations, etc., and increase benzene rings, carbon sources, and processing costs Low, easy to collect effect

Active Publication Date: 2019-12-03
YANTAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that limited by the market capacity, the consumption of chromium-containing leather shavings is limited, and the resource utilization of chromium-containing leather shavings cannot be realized

Method used

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  • Method for producing particle board from chrome-containing leather shavings
  • Method for producing particle board from chrome-containing leather shavings
  • Method for producing particle board from chrome-containing leather shavings

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0038] (1) Mix 60g of blue leather shavings, 1g of oxalic acid and 90g of water evenly, stir at 35°C for 1h; then adjust the pH to 4, add 0.4g of sodium citrate dihydrate, stir for 30min, and dry the obtained blue chrome shavings Dry;

[0039] (2), all the blue leather shavings of step (1), polyurethane glue 700w13.2g, nitrogen-phosphorus flame retardant 2g, nitrile rubber toughening agent 1g, sodium p-vinylbenzenesulfonate toughening synergist 0.2g , flame retardant synthetic fatliquoring agent 5g, water expansion inhibitor 0.9g, n-butyl benzoic acid 0.7g, water-based transparent waterproofing agent WP01 0.2g (Hangzhou Ruijiang New Material Technology Co., Ltd.) mixed evenly, and placed at room temperature for 30min , put it on a 4mm thick mold, the pressure of the flat vulcanizing machine is 10Mpa, the temperature is 90°C, heat and pressurize in the flat vulcanizing machine, the processing time is 30min, the obtained plate is placed in a constant temperature and humidity box...

preparation example 2

[0045] (1) Mix 60g of blue leather shavings, 3g of oxalic acid and 90g of water evenly, stir at 40°C for 2h; then adjust the pH to 4.5, add 0.7g of sodium citrate dihydrate, stir for 60min, and dry the obtained blue chrome shavings Dry;

[0046] (2), all blue leather shavings of step (1), universal glue 899 (Guangdong Gujia Industrial Co., Ltd.) 21.1g, nitrogen-phosphorus flame retardant 8g, polyvinyl butyral toughening agent 3g, malonic acid ring (sub- ) isopropyl ester toughening synergist 0.5g, flame retardant synthetic fatliquoring agent 7g, water swelling inhibitor 2.1g, trimethylolpropane 2.5g, water-based transparent waterproofing agent WP01 is 0.6g (Hangzhou Ruijiang New Material Technology Co., Ltd.) mixed evenly, placed at room temperature for 60 minutes, put it on a 4mm thick mold, the pressure of the flat vulcanizer is 12Mpa, the temperature is 100°C, heated and pressurized in the flat vulcanizer, the processing time is 60min, and the obtained plate is placed in I...

preparation example 3

[0052] (1) Mix 60g of blue leather shavings, 2g of oxalic acid and 90g of water evenly, and stir at 40°C for 1.5h; then adjust the pH to 4, add 0.55g of sodium citrate dihydrate, stir for 45min, and mix the obtained blue chrome shavings drying;

[0053] (2), all the blue leather scraps in step (1), polyurethane glue 700w17.2g, nitrogen phosphorus flame retardant 5g, polyvinyl butyral toughening agent 2g, 3,4-dimethylaniline toughening synergist 0.35g, 6g of flame-retardant synthetic fatliquoring agent, 1.5g of water swelling inhibitor, 1.6g of cinnamic amide, 0.4g of water-based transparent waterproofing agent WP01 (Hangzhou Ruijiang New Material Technology Co., Ltd.), mix well, and place at room temperature for 45min. Put it on a 4mm thick mold, the pressure of the flat vulcanizer is 11Mpa, the temperature is 95°C, heat and pressurize in the flat vulcanizer, the processing time is 45min, put the obtained plate in a constant temperature and humidity box for 48h, control the te...

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Abstract

The invention relates to a method for producing a particle board from chrome-containing leather shavings. Blue leather shavings are treated and then uniformly mixed with gum, a nitrogen and phosphorus-based flame retardant, a toughening agent, a toughening synergist, a flame-retardant synthetic fat liquor, an inhibiting water expanding agent and a water-based transparent waterproof agent, the obtained mixture is placed in a mold and is heated and pressurized in a plate vulcanization machine, curing is performed, a board with the uniform surface is finally obtained to serve as the particle board, and the obtained particle board has good performance in flame retardance, water-resistant expansion rate, wear resistance and the like.

Description

technical field [0001] The invention relates to a method for making particle boards by utilizing chromium-containing leather scraps as tanning waste. Background technique [0002] my country is the world's largest leather producer, with a total leather output of 900 million square meters, accounting for about a quarter of the world's total. Such a high leather production has created an annual output value of 1.3 trillion yuan and an export value of 88.9 billion US dollars. At the same time, it has also brought a huge amount of pollution to the environment of our country. In addition to wastewater pollution, solid waste pollution has increasingly become a social and ecological problem. The total amount of tanning waste in the world is about 5 million tons, of which China is as high as 1.4 million tons (including chrome blue leather scraps). Chromium-containing blue leather scraps are hazardous wastes, and landfill and incineration are prohibited. They are considered to be t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L89/06C08L75/04C08L29/14C08L91/00C08L83/04C08K13/02C08K5/053C08K5/524C08K5/42C08K5/18C08K5/50C14C3/02
CPCC08L89/06C14C3/02C08L2201/02C08L2207/20C08L2205/035C08L2205/025C08L2205/06C08L75/04C08L29/14C08L91/00C08L83/04C08K13/02C08K5/053C08K5/524C08K5/42C08K5/18C08K5/50
Inventor 段宝荣王全杰仇同济王琦研
Owner YANTAI UNIV
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