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Lightweight and high-strength wheat straw board of oriented structure

A straw board, high-strength technology, applied in the joint of wooden veneers, pretreatment of molding materials, household components, etc., can solve the problems of low added value, single function, traditional field, etc., and achieve the increase of section density, mechanical High performance and good mechanical properties

Inactive Publication Date: 2018-03-09
SHENYANG SHUNFENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, straw resources are mainly used in energy, feed, fertilizer, and industrial raw materials, etc., and its fields are relatively traditional. Among them, the application of industrial raw materials is less than 3% of the total amount of straw, and the added value of utilization is low; and the function is relatively simple, mainly for heat insulation Insulation-based

Method used

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  • Lightweight and high-strength wheat straw board of oriented structure
  • Lightweight and high-strength wheat straw board of oriented structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] According to the components specified in Table 1 below, the wheat straw, emulsifiable polyisocyanate adhesive, liquid paraffin and nitrogen-phosphorus flame retardant were weighed in parts by weight. Dry the wheat straw in a drying oven at a temperature of 100-110°C for 1 hour until the moisture content is between 5% and 10%; cut the dried wheat straw into granules and put them into a grinder for grinding Grinding, the rotation speed is 150r / min, the grinding time is 0.5h; use a sieve to screen out the wheat straw powder with a particle size between 1-2mm; put the wheat straw powder into the drying box for drying, the temperature is 100-110°C, the drying time 0.5h, until the water content is between 5% and 10%; add the adhesive and liquid paraffin to the above-mentioned wheat straw powder, and stir evenly; put the evenly stirred wheat straw raw material on the double-steel belt continuous flat press machine Carry out criss-cross weaving pavement into a slab; fix the pol...

Embodiment 2

[0028] The method of Example 1 was repeated according to the content of each component specified in Table 1 below, and the test results are listed in Table 1.

Embodiment 3

[0030] The method of Example 1 was repeated according to the content of each component specified in Table 1 below, and the test results are listed in Table 1.

[0031] 1. Performance testing.

[0032] The specifications, appearance quality, and physical and mechanical properties of the finished products prepared in Examples 1-3 of the present invention are tested and judged according to the provisions of the national standard LYT 2141-2013 Oriented Structure Wheat Straw Board, and the detection is carried out according to the nominal thickness of 8mm. The amount of formaldehyde released is measured according to the national GB18580-2001; the flame retardant performance is tested according to GB8624-2006.

[0033] 1. The performance test of the novel roof insulation and waterproof material prepared in Examples 1-3, the results are shown in Table 1.

[0034] Table 1 The physical and chemical indicators of new roof insulation and waterproof materials.

[0035]

[0036] 2. Th...

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Abstract

The invention belongs to the technical field of building boards, and relates to a light-weight, high-strength directional-structure wheat straw board. The oriented structure wheat straw board of the present invention is prepared from the following raw materials in parts by weight: 80-90 parts of wheat straw (particle size between 1-2mm; moisture content between 5%-10%), adhesive 3 ‑5 parts, 1‑2 parts of liquid paraffin and 10‑20 parts of flame retardant. The invention has the advantages of high strength, good dimensional stability, light weight, good machinability, and good water resistance; the invention uses a halogen-free added flame retardant liquid to carry out fire and flame retardant treatment on the wheat straw board, and the fire resistance reaches the national GB8624‑2006 ‑B level standard; polyisocyanate is used as the adhesive of wheat straw board, so that the wheat straw board does not contain free formaldehyde, meets the requirements of green environmental protection, and meets the national GB18580‑2001‑E1 standard; the present invention weaves wheat straw in a criss-cross pattern Permanent pavement, fully improve the strength and toughness of the formed wheat straw board, enhance the waterproof performance, greatly increase the section density, high mechanical properties, and good appearance flatness.

Description

technical field [0001] The invention belongs to the technical field of building boards, and relates to a light-weight, high-strength directional-structure wheat straw board. Background technique [0002] The annual output of crop straw in my country is about 700 million tons, ranking first in the world. With the continuous development of my country's rural economy, the traditional use of straw as living fuel continues to decrease, making it very difficult to dispose of the remaining straw. People usually burn the straw, which pollutes the environment and wastes resources. At the same time, with the vigorous development of the construction industry, the global demand for building materials continues to grow, resulting in an increasing demand for resources. Processing straw into economical and practical building materials can effectively utilize straw resources and reduce pollution. Avoiding the waste of resources while reducing the consumption of other resources is an emergi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/04B27N1/02B27N3/02B27N3/14B27N3/18
CPCB27D1/04B27N1/02B27N3/02B27N3/14B27N3/18
Inventor 刘春峰左佳鑫王同林
Owner SHENYANG SHUNFENG NEW MATERIAL CO LTD
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