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Hot-pressing process method of poplar and corn stalk bricks

A technology of hot pressing and straw bricks, which is applied in the field of environmental protection material processing, can solve the problems of wasting resources, single processing methods, and polluting the environment, and achieve a good tactile effect

Inactive Publication Date: 2018-06-29
SHANDONG AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, poplar is mainly used to make wood-based panels. The processing method is single, the added value is low, and the profit rate is 7.5%. The direct burning of corn stalks in the field is not only a waste of resources, but also seriously pollutes the environment; strengthening the comprehensive development and utilization of straw is the key to the development of modernization. an inevitable trend in agriculture

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A hot pressing process of poplar wood and corn straw bricks

[0017] (1) Purpose: To form poplar and corn stalk bricks with a three-dimensional size of 235mm×110mm×50mm by hot pressing, so that the compressive strength of the dried bricks can reach more than 2.60MPa.

[0018] (2) Make molds. On the basis of determining that the new brick is a solid cuboid, the three-dimensional size is 235mm×110mm×50mm, and the compression ratio is 3, the mold is designed and manufactured, and the internal size is 235mm×110mm×150mm.

[0019] (3) Weigh the raw materials. Accurately weigh 268g of poplar fiber, 38g of corn stalk, and 1683g of calcium hydroxide.

[0020] (4) Fully stir. With the help of a mixer, beat the mixture well.

[0021] (5) Loading. After setting the temperature, pressure and time of the hot press, close the mold and fill the mold evenly with the mixture.

[0022] (6) pressurization. Start the hot press, press the pressure head into the pressure barrel complet...

Embodiment 2

[0029] A hot pressing process of poplar wood and corn straw bricks

[0030] (1) Purpose: To form poplar and corn stalk bricks with a three-dimensional size of 235mm×110mm×50mm by hot pressing, so that the compressive strength of the dried bricks can reach more than 2.60MPa.

[0031] (2) Make molds. On the basis of determining that the new brick is a solid cuboid, the three-dimensional size is 235mm×110mm×50mm, and the compression ratio is 3, the mold is designed and manufactured, and the internal size is 235mm×110mm×150mm.

[0032] (3) Weigh the raw materials. Accurately weigh 268g of poplar fiber, 38g of corn stalk, and 1683g of calcium hydroxide.

[0033] (4) Fully stir. With the help of a mixer, beat the mixture well.

[0034] (5) Loading. After setting the temperature, pressure and time of the hot press, close the mold and fill the mold evenly with the mixture.

[0035] (6) pressurization. Start the hot press, press the pressure head into the pressure barrel complet...

Embodiment 3

[0042] A hot pressing process of poplar and corn stalk bricks

[0043] (1) Purpose: To form poplar and corn stalk bricks with a three-dimensional size of 235mm×110mm×50mm by hot pressing, so that the compressive strength of the dried bricks can reach more than 2.60MPa.

[0044] (2) Make molds. On the basis of determining that the new brick is a solid cuboid, the three-dimensional size is 235mm×110mm×50mm, and the compression ratio is 3, the mold is designed and manufactured, and the internal size is 235mm×110mm×150mm.

[0045] (3) Weigh the raw materials. Accurately weigh 268g of poplar fiber, 38g of corn stalk, and 1683g of calcium hydroxide.

[0046] (4) Fully stir. With the aid of a mixer, beat the mixture well.

[0047] (5) Loading. After setting the temperature, pressure and time of the hot press, close the mold and fill the mold evenly with the mixture.

[0048] (6) pressurization. Start the hot press, press the pressure head into the pressure barrel completely at...

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Abstract

The invention belongs to the field of processing of environment-friendly materials and particularly relates to a hot-pressing process of poplar and corn stalk bricks. According to the process, the poplar and corn stalk bricks are prepared through performing mold pressing on a mixture of poplar fibers, corn stalk fibers and calcium hydroxide; hot pressing is carried out by adopting the process parameters that hot pressing pressure is as follows: the positive pressure is 14MPa, the lateral pressure is 4MPa, the hot pressing temperature is 30 DEG C to 80 DEG C, and the pressure holding time is 5min; final obtained fiber bricks have the compressive strength of 2.60MPa or more which is far better than that in the prior art.

Description

technical field [0001] The invention belongs to the field of environmental protection material processing, and in particular relates to a hot pressing process method for poplar wood and corn straw bricks. Background technique [0002] The area of ​​poplar plantations in my country is more than 10.1 million hm 2 , with a storage capacity of 549 million m 3 , No. 1 in the world, rich poplar resources; corn stalks are about 1 billion tons in the world, which can be used as industrial raw materials. [0003] At present, poplar is mainly used to make wood-based panels. The processing method is single, the added value is low, and the profit rate is 7.5%. The direct burning of corn stalks in the field is not only a waste of resources, but also seriously pollutes the environment; strengthening the comprehensive development and utilization of straw is the key to the development of modernization. An inevitable trend in agriculture. [0004] In order to increase the added value of p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B30/02
CPCC04B30/02C04B2111/40C04B2201/50C04B22/064C04B18/26C04B18/248
Inventor 路则光张敏王萌贾万达
Owner SHANDONG AGRICULTURAL UNIVERSITY