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Environment-friendly biomass material and preparation method thereof

A biomass material and environmentally friendly technology, applied in the field of degradable and environmentally friendly biomass materials, can solve the problems that the product cannot be completely degraded, the profile cannot be continuous, and it is not suitable for extrusion molding, so as to improve physical and mechanical properties, Good strength, The effect of improving the utilization rate

Active Publication Date: 2014-06-18
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, the blending of biomass fiber material and resin cannot realize the complete degradation of the product; secondly, compression molding is a batch production process, which cannot realize the continuous production process of profiles
Although the extrusion molding process can realize the continuous production process of products, extrusion molding is mostly suitable for materials with good fluidity or viscoelasticity such as plastics or wood-plastic composite materials.
However, since plant fibers often exist in an aggregated state, and the slurry is a water-based slurry, solid-liquid separation is prone to occur, and it is generally not suitable for extrusion molding.

Method used

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  • Environment-friendly biomass material and preparation method thereof

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Effect test

Embodiment 1

[0031] as the picture shows:

[0032] The preparation method of described environment-friendly biomass material, the steps are as follows in parts by weight:

[0033] (1) Preliminary treatment of base material:

[0034] Waste paper fiber: Soak waste corrugated cardboard for degumming and then pulp it with a hydraulic pulper until the mass ratio of flocculent components in the pulp to the total pulp is not more than 30%, and the average size of fiber flocs is not more than 5.0mm ; Then filter the slurry to a water content of 70-90% for later use;

[0035] (2) Material mixing: Take 60 parts of waste paper fiber, 20 parts of cornstarch, 15 parts of plasticizer, 2.5 parts of silane coupling agent, and 2.5 parts of lubricant in the base material prepared in step (1) and mix thoroughly at room temperature 20min, the stirring speed is 20r / min; then heat in a water bath while stirring continuously;

[0036] The plasticizer is a mixture of urea and glycerin; wherein the mass ratio o...

Embodiment 2

[0044] The preparation method of described environment-friendly biomass material, the steps are as follows in parts by weight:

[0045] (1) Preliminary treatment of base material:

[0046] Waste paper fiber: Soak waste corrugated cardboard for degumming and then pulp it with a hydraulic pulper until the mass ratio of flocculent components in the pulp to the total pulp is not more than 30%, and the average size of fiber flocs is not more than 5.0mm ; Then filter the slurry to a water content of 70% for subsequent use;

[0047] When mixed biomass raw materials are used, waste paper fibers with a mass ratio of 60% are mixed with 20% a and 20% b:

[0048] a. Crop stalks: crush the crop stalks with a pulverizer until the particle size is not larger than 3mm, soak for 8 hours, and filter the slurry until the water content is 70% for later use;

[0049] b. Wood powder: use a pulverizer to pulverize the wood powder left over from wood processing until the particle size is no more than...

Embodiment 3

[0059] The preparation method of described environment-friendly biomass material, the steps are as follows in parts by weight:

[0060] (1) Preliminary treatment of base material:

[0061] Waste paper fiber: Soak waste corrugated cardboard for degumming and then pulp it with a hydraulic pulper until the mass ratio of flocculent components in the pulp to the total pulp is not more than 30%, and the average size of fiber flocs is not more than 5.0mm ; Then filter the slurry to a water content of 80% for subsequent use;

[0062] When using mixed biomass raw materials, mix waste paper fibers with a mass ratio of 70% with 5% of a, 15% of b and 10% of c:

[0063] a. Crop straw: crush the crop straw with a pulverizer until the particle size is not larger than 3mm, soak for 7 hours, and filter the slurry until the water content is 80% for later use;

[0064] b. Wood flour: grind the wood flour from the wood processing residue until the particle size is no more than 3 mm, soak for 7 ...

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Abstract

The invention relates to a process method for continuously producing an environment-friendly biomass material by using an extruding method, and belongs to degradable environment-friendly biomass materials and the related technical field thereof. The environment-friendly biomass material is prepared by taking biomass fibers as main materials and starch as an auxiliary material; the materials are sufficiently agitated and mixed, and then are heated by a water bath; a semi-fluid state of the biomass fiber raw material is realized under a flow aiding effect after starch pasting; then the materials are continuously extruded by a screw-rod extruder and then is molded by a mould with the shape which is the same as that of an opening mould, so as to realize continuous production of the biomass materials; after being extruded, the materials are processed by processes of drying, compressing or foaming to prepare materials and products with different densities, sizes and mechanical properties. By virtue of adopting the process method provided by the invention, a continuous automatic production process of the biomass materials can be finished and the process method can be used as a former procedure for the biomass materials or the products and can also be used as a final procedure. Therefore, the cost can be saved and the production efficiency is improved.

Description

technical field [0001] The invention relates to a process method for continuously producing environmentally friendly biomass materials and products by extrusion, in particular to a new type of green environmental protection biomaterials such as paper angle protectors, paper channel steel and cardboard strips, which are continuously produced by extrusion of waste paper fiber raw materials. The invention relates to a process method for a material profile, which belongs to the field of degradable and environment-friendly biomass materials and related technologies. Background technique [0002] With the decrease of natural resources, the deterioration of the environment, and the increasing awareness of environmental protection, the utilization of biomass fiber materials with a wide range of sources, green environmental protection, and recyclability has attracted more and more attention. It is estimated that plants on the earth can produce 200 billion tons of cellulose, 150 billi...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08L3/02C08K5/053C08K5/21
Inventor 张新昌彭慧丽孙昊张哲源
Owner JIANGNAN UNIV
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