Preparation method of bamboo charcoal slow-rebound sponge

A technology of slow rebound sponge and bamboo charcoal, applied in the direction of carbon preparation/purification, etc., can solve the problems of complex preparation method of slow rebound sponge, low production efficiency, and the rebound time needs to be improved, and achieves good moisture permeability and air permeability. , The effect of improving production efficiency and saving reaction raw materials

Inactive Publication Date: 2013-01-02
ZHEJIANG JIANZHONG BAMBOO IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation method of the slow rebound sponge is complicated, the production efficiency is low, and the rebound time needs to be improved.

Method used

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  • Preparation method of bamboo charcoal slow-rebound sponge
  • Preparation method of bamboo charcoal slow-rebound sponge
  • Preparation method of bamboo charcoal slow-rebound sponge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Bamboo charcoal powder preparation: Pilot test is carried out in a vertical moving bed dry distillation carbonization furnace, with bamboo chips (about 36cm long) with an average moisture content of 39%, the temperature of each temperature measurement point, the drying area A is 150 ° C, and the pre-carbonization area B is 275°C, carbonization zone C is 450°C, observed when the temperature rises figure 1 The zone D shown is the temperature of different positions in the combustion zone. When the temperature of a certain place in the combustion zone, such as d2, is too low, open the small hole in that place, introduce air and burn it nearby, so as to raise the temperature in this place and control the bamboo to move down. The temperature of the combustion zone experienced in the process was raised to 700°C at a rate of 5°C / min and kept for 40 minutes, and then raised from 700°C to 1100°C at a rate of 5°C / min and held for 2 hours. The bamboo charcoal cooling pipe and bamboo...

Embodiment 2

[0053] The preparation raw material and preparation method of bamboo charcoal slow-rebound sponge are the same as in Example 1, except that the preparation of bamboo charcoal powder is carried out in a pilot test in a 16-tube conjoined column and tube moving bed dry distillation carbonization furnace, with Mengzong bamboo with an average moisture content of 30% piece (about 40cm in length), the temperature of each temperature measuring point, the drying area A is 200°C, the pre-carbonization area B is 270°C, and the carbonization area C is 500°C. When the temperature is raised, part of the combustion gas and bamboo vinegar liquid are introduced from the external combustion type. Part of the non-condensable gas in the condenser is burned at the same time, so that the temperature of the combustion zone is raised to 750°C at a rate of 15°C / min and kept at a temperature of 80 minutes, and then raised from 750°C to 1500°C at a rate of 15°C / min and kept at a temperature of 8 hours. W...

Embodiment 3

[0058] The preparation of bamboo charcoal powder is with embodiment one, and difference is the preparation raw material of bamboo charcoal slow rebound sponge and preparation method.

[0059] Preparation raw materials of bamboo charcoal slow rebound sponge:

[0060] 1-3 parts of bamboo charcoal powder with a particle size of 1500-2800 mesh; the first polyol: a polymer of 85 parts by weight of ethylene glycol and propylene glycol, with a functionality of 3 and a hydroxyl value of 99 mgKOH / g; the second polyol: three 10 parts by weight of copolyol of methylolpropane and butylene oxide, EO content 80%, hydroxyl value 22mgKOH / g; MDI isocyanate 30 parts by weight; cyclopentane, n-butane, 5-15% sodium bicarbonate 6 parts by weight of foaming agent formed from the solution; 6 parts by weight of triethylenediamine; 0.5 parts by weight of sulfonate flame retardant; 0.8 parts by weight of room temperature vulcanized silicone rubber toughening agent.

[0061]

[0062] The preparation m...

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Abstract

The invention relates to a preparation method of a slow-rebound sponge, particularly a preparation method of a bamboo charcoal slow-rebound sponge. The method comprises the steps of respective weighing, respective stirring, respective feeding, foaming and cooling. The method specifically comprises the following steps: evenly mixing a first polybasic alcohol and a second polybasic alcohol in a stirrer to obtain a first mixed solution, and evenly mixing bamboo charcoal powder, MDI (methylenediphenyl diisocyanate), a foaming agent, a catalyst, a surfactant, a flame retardant and 0.2-0.8 part by weight of silicon rubber toughener in a second stirrer to obtain a second mixed solution; sending the first mixed solution into a first feed pipe, sending the second mixed solution into a second feed pipe, foaming in a 40-50 DEG C foaming mold for 1-8 minutes, and keeping the temperature of 25-40 DEG C for 1-5 hours; and cooling, and dicing. The bamboo charcoal slow-rebound sponge has the advantages of favorable air and moisture permeability, low rebound speed and proper softness and hardness, and is slightly influenced by the temperature.

Description

technical field [0001] The invention relates to a preparation method of a slow rebound sponge, in particular to a preparation method of a bamboo charcoal slow rebound sponge. Background technique [0002] Sponge generally refers to foaming materials, and foamed products of resin, rubber, and plastic are called sponges. Polyurethane sponge is foamed polyurethane material. Polyurethane not only has the elasticity of rubber, but also has the strength of plastic and excellent processing performance, and can be used to prepare polyurethane slow rebound foam (soft polyurethane foam). [0003] Theoretically, the resilience of the slow-rebound sponge is related to its phase separation degree and glass transition temperature. By selecting raw materials and adjusting the glass transition temperature of the foam to the use temperature, while reducing the degree of phase separation of the foam, the slow-rebound foam can be obtained. The usual process is to mix low hydroxyl value soft ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08L75/08C08L83/04C08K3/04C08K5/42C08J9/14C08J9/08C01B31/02B29C44/60C08G101/00C01B32/05
Inventor 丁建中
Owner ZHEJIANG JIANZHONG BAMBOO IND
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