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Method for preparing foaming material by adopting bamboo liquefied product
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A technology for liquefied products and foaming materials, which is applied in the field of preparing foaming materials to achieve the effects of protecting the ecological environment, stable quality and uniform pore structure
Active Publication Date: 2012-08-01
ZHEJIANG FORESTRY ACAD
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Problems solved by technology
However, how to use bamboo liquefaction product resin to produce qualified foaming materials is still the last technical bottleneck that needs to be solved
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preparation example Construction
[0025] The inventor has applied for a Chinese patent (application number 201110440838.9) for the preparation method of the bamboo liquefaction product resin.
[0026] The bamboo phenolic alcohol liquefaction product adopted in the above method is made from bamboo waste and processing residues; the specific method is:
[0027] 1) first crush small-diameter bamboo or / and bamboo processing residues to 20-80 mesh, and dry until the moisture content is less than 10% for later use;
[0028] 2) add the bamboo powder of 100 mass parts, the phenol of 50-75 mass parts, the polyethylene glycol of 50-75 mass parts and the acid catalyst of 15-30 mass parts in reaction vessel, normal pressure reaction 30-90min, reaction The temperature is 110°C-170°C; after the reaction is completed, the temperature is lowered to room temperature, and 15-30 parts by mass of caustic soda solution is added for neutralization to obtain a bamboo phenolic alcohol liquefaction product.
[0029] The acid catalyst...
Embodiment
[0034] 1.1 Materials
[0035] Bamboo liquefied resin: 100 parts by mass, self-made;
[0036] Surfactant: OP-10 emulsifier and Tween 80 with a mass ratio of 1:1; 5-15 parts by mass.
[0045] 1.3.1 Preparation of foaming material: first add surfactant, filler and foaming agent to the resin, stir well, then add curing agent and isocyanate, stir quickly for 15-25s, pou...
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Abstract
The invention relates to a method for preparing a foaming material by adopting a bamboo liquefied product and aims at preparing a foaming body which is stable in quality and characterized by being even and fine in pore structure by means of the method. The technical scheme is that the method for preparing the foaming material by adopting the bamboo liquefied product resin comprises the steps of adding a surface active agent, a padding and a foaming agent into 100 parts by mass of the bamboo liquefied product resin, adding a curing agent and isocyanate after stirring evenly, quickly performing stirring for 15-25 seconds, pouring mixture into a mould, placing the mould in a drying oven with 70-90 DEG C to be thermalized for 3-5 hours, fetching out the mould and demoulding the mixture. The foaming agent is one or more of n-pentane, isopentane and cyclopentane in any proportion, and the using amount is 8-15 parts by mass. The curing agent is one or two of p-toluenesulfonic acid and phosphoric acid in any proportion, the using amount is 16-20 parts by mass. The using amount of the isocyanate is 30-50 parts by mass.
Description
technical field [0001] The invention relates to a method for preparing foamed material by adopting bamboo liquefaction product resin. Background technique [0002] With the rapid development of economy and society, the use of foam materials is becoming more and more extensive. For example, phenolic foam is used in high-rise buildings, large cultural and sports entertainment venues, high-speed vehicles, etc. because of its low thermal conductivity and excellent flame resistance; polypropylene foam is used because of its good thermal stability, excellent shock resistance, energy absorption and durability. Chemically corrosive, it is widely used in various fields such as food packaging materials, automotive cushioning materials, and heat insulation materials. However, most of the raw materials used in the production of existing foam materials are petrochemical raw materials, which are non-renewable resources; with the increasing shortage of petrochemical raw materials, the cos...
Claims
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Application Information
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