CN110653913A - Degradable plant drainage plate core and preparation method thereof - Google Patents
Degradable plant drainage plate core and preparation method thereof Download PDFInfo
- Publication number
- CN110653913A CN110653913A CN201910789123.0A CN201910789123A CN110653913A CN 110653913 A CN110653913 A CN 110653913A CN 201910789123 A CN201910789123 A CN 201910789123A CN 110653913 A CN110653913 A CN 110653913A
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- Prior art keywords
- parts
- fiber
- straw
- mixture
- degradable plant
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2200/00—Geometrical or physical properties
- E02D2200/16—Shapes
- E02D2200/1628—Shapes rectangular
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0051—Including fibers
- E02D2300/0067—Including fibers made from cellulose
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0079—Granulates
Abstract
The invention provides a degradable plant drain board core and a preparation method thereof, wherein the degradable plant drain board core comprises the following raw materials in parts by weight: 13-17 parts of straw, 10-13 parts of sawdust, 3-5 parts of reed, 5-8 parts of corncob, 13-17 parts of corn straw, 12-17 parts of wheat straw, 2-5 parts of bamboo fiber, 7-12 parts of rice hull powder, 4-8 parts of hemp fiber or glass fiber and 30-35 parts of adhesive. The raw materials used in the invention are easy to obtain, the cost is low, the preparation method is simple to operate, the obtained drainage plate core can be automatically degraded after being inserted into the ground to complete soft foundation reinforcement, the foundation can not be settled after construction, and the environmental protection property is good.
Description
Technical Field
The invention belongs to the technical field of drain boards, and particularly relates to a degradable plant drain board core and a preparation method thereof.
Background
The drain bar is used for the foundation construction, inserts the drain bar in the soft soil foundation, and the water drainage tank on drain bar surface can be followed to moisture discharges to the consolidation of soft soil foundation can be accelerated, the efficiency of construction can be accelerated. But the core of current drain bar is the plastics material, inserts underground after not degradable, can the polluted environment, and is in underground for a long time and causes the foundation after the worker to subside easily, and takes out it after finishing using and retrieve, then consuming time and wasting force, greatly increase construction cost.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a degradable plant drainage plate core and a preparation method thereof, and solves the problems that the existing drainage plate core cannot be degraded, pollutes the environment and is difficult to recycle.
The invention provides the following technical scheme:
a degradable plant drain board core comprises the following raw materials in parts by mass: 13-17 parts of straw, 10-13 parts of sawdust, 3-5 parts of reed, 5-8 parts of corncob, 13-17 parts of corn straw, 12-17 parts of wheat straw, 2-5 parts of bamboo fiber, 7-12 parts of rice hull powder, 4-8 parts of hemp fiber or glass fiber and 30-35 parts of adhesive.
Preferably, the degradable plant drain board core comprises the following raw materials in parts by weight: 13-15 parts of straw, 11-13 parts of sawdust, 3-4.5 parts of reed, 6-8 parts of corncob, 13-16 parts of corn stalk, 12-16 parts of wheat stalk, 2-5 parts of bamboo fiber, 8-11 parts of rice hull powder, 4-8 parts of hemp fiber or glass fiber and 30-35 parts of adhesive.
Preferably, the degradable plant drain board core comprises the following raw materials in parts by weight: 15 parts of straw, 12 parts of sawdust, 4 parts of reed, 7 parts of corncob, 15 parts of corn stalk, 15 parts of wheat stalk, 3 parts of bamboo fiber, 10 parts of rice hull powder, 7 parts of hemp fiber or glass fiber and 32 parts of adhesive.
A preparation method of a degradable plant drain board core comprises the following steps:
s1, uniformly stirring raw materials, namely 13-17 parts of straw, 10-13 parts of sawdust, 3-5 parts of reed, 5-8 parts of corncob, 13-17 parts of corn stalk, 12-17 parts of wheat stalk, 2-5 parts of bamboo fiber and 7-12 parts of rice hull powder in a mixing barrel to obtain a plant fiber mixture;
s2, adding 30-35 parts of adhesive into the plant fiber mixture, heating and uniformly stirring;
s3, adding 4-8 parts of hemp fiber or glass fiber, and uniformly stirring to obtain a mixture;
s4, uniformly dispersing the mixture, and pressing the mixture into a plate by a heated smooth press roll;
and S5, pressing the plate by using a forming roller with cutter grooves to obtain the degradable plant drainage plate core with drainage grooves.
Preferably, the heating and stirring temperature in the step S2 is 150-190 ℃ so that the adhesive is melted and uniformly mixed with the plant fiber mixture.
Preferably, the heating set temperature of the smooth pressing roller in the step S4 is 120-180 ℃, so that the plate is convenient to form.
The invention has the beneficial effects that:
(1) the degradable plant drain board core provided by the invention is mainly made of plant fibers, and has degradable performance; wherein the straw, the wood chip, the reed, the corncob, the corn stalk, the wheat stalk and the rice hull powder are easily obtained and have extremely low cost; the bamboo fiber has the antibacterial effect, helps to prolong the service life of the drainage plate, and is beneficial to foundation construction; the addition of the hemp ribs or the glass fiber yarns can enhance the folding strength of the drainage plate; the adhesive is used for bonding various plant fibers, so that the drainage plate core is convenient to press;
(2) the preparation method of the degradable plant drain board core provided by the invention is simple to operate and low in cost;
(3) the degradable plant drainage plate core prepared by the invention can be automatically degraded after being inserted into the ground to complete soft foundation reinforcement, the degraded drainage plate core loses the drainage effect, the foundation cannot be settled after construction, and the environment friendliness is good.
Detailed Description
Example 1
A degradable plant drain board core comprises the following raw materials in parts by mass: 13 parts of straw, 10 parts of sawdust, 3 parts of reed, 5 parts of corncob, 13 parts of corn stalk, 12 parts of wheat stalk, 2 parts of bamboo fiber, 7 parts of rice hull powder, 4 parts of hemp fiber and 30 parts of adhesive.
The preparation method of the degradable plant drain board core comprises the following steps:
s1, putting the straw, the wood chips, the reed, the corncob, the corn stalk, the wheat stalk, the bamboo fiber and the rice hull powder into a mixing barrel according to the mass parts, and uniformly stirring to obtain a plant fiber mixture;
s2, adding an adhesive into the plant fiber mixture, heating to 150 ℃, and uniformly stirring;
s3, adding the hemp fiber, and uniformly stirring to obtain a mixture;
s4, uniformly dispersing the mixture, and pressing the mixture into a plate by a smooth press roll heated to 130 ℃;
and S5, pressing the plate by using a forming roller with cutter grooves to obtain the degradable plant drainage plate core with drainage grooves.
Example 2
A degradable plant drain board core comprises the following raw materials in parts by mass: 17 parts of straw, 13 parts of sawdust, 5 parts of reed, 8 parts of corncob, 17 parts of corn stalk, 17 parts of wheat stalk, 5 parts of bamboo fiber, 12 parts of rice hull powder, 8 parts of hemp fiber and 35 parts of adhesive.
The preparation method of the degradable plant drain board core comprises the following steps:
s1, putting the straw, the wood chips, the reed, the corncob, the corn stalk, the wheat stalk, the bamboo fiber and the rice hull powder into a mixing barrel according to the mass parts, and uniformly stirring to obtain a plant fiber mixture;
s2, adding an adhesive into the plant fiber mixture, heating to 190 ℃, and uniformly stirring;
s3, adding the hemp fiber, and uniformly stirring to obtain a mixture;
s4, uniformly dispersing the mixture, and pressing the mixture into a plate by a smooth press roll heated to 180 ℃;
and S5, pressing the plate by using a forming roller with cutter grooves to obtain the degradable plant drainage plate core with drainage grooves.
Example 3
A degradable plant drain board core comprises the following raw materials in parts by mass: 15 parts of straw, 12 parts of sawdust, 4 parts of reed, 7 parts of corncob, 15 parts of corn stalk, 15 parts of wheat stalk, 3 parts of bamboo fiber, 10 parts of rice hull powder, 7 parts of glass fiber and 32 parts of adhesive.
The preparation method of the degradable plant drain board core comprises the following steps:
s1, putting the straw, the wood chips, the reed, the corncob, the corn stalk, the wheat stalk, the bamboo fiber and the rice hull powder into a mixing barrel according to the mass parts, and uniformly stirring to obtain a plant fiber mixture;
s2, adding an adhesive into the plant fiber mixture, heating to 160 ℃, and uniformly stirring;
s3, adding glass fiber yarns, and uniformly stirring to obtain a mixture;
s4, uniformly dispersing the mixture, and pressing the mixture into a plate by a smooth press roll heated to 120 ℃;
and S5, pressing the plate by using a forming roller with cutter grooves to obtain the degradable plant drainage plate core with drainage grooves.
Example 4
A degradable plant drain board core comprises the following raw materials in parts by mass: 13 parts of straw, 11 parts of sawdust, 3 parts of reed, 6 parts of corncob, 13 parts of corn stalk, 12 parts of wheat stalk, 2 parts of bamboo fiber, 8 parts of rice hull powder, 4 parts of glass fiber and 30 parts of adhesive.
The preparation method of the degradable plant drain board core comprises the following steps:
s1, putting the straw, the wood chips, the reed, the corncob, the corn stalk, the wheat stalk, the bamboo fiber and the rice hull powder into a mixing barrel according to the mass parts, and uniformly stirring to obtain a plant fiber mixture;
s2, adding an adhesive into the plant fiber mixture, heating to 170 ℃, and uniformly stirring;
s3, adding glass fiber yarns, and uniformly stirring to obtain a mixture;
s4, uniformly dispersing the mixture, and pressing the mixture into a plate by a smooth press roll heated to 150 ℃;
and S5, pressing the plate by using a forming roller with cutter grooves to obtain the degradable plant drainage plate core with drainage grooves.
Example 5
A degradable plant drain board core comprises the following raw materials in parts by mass: 15 parts of straw, 13 parts of sawdust, 4.5 parts of reed, 8 parts of corncob, 16 parts of corn straw, 16 parts of wheat straw, 5 parts of bamboo fiber, 11 parts of rice hull powder, 8 parts of hemp fiber and 35 parts of adhesive.
The preparation method of the degradable plant drain board core comprises the following steps:
s1, putting the straw, the wood chips, the reed, the corncob, the corn stalk, the wheat stalk, the bamboo fiber and the rice hull powder into a mixing barrel according to the mass parts, and uniformly stirring to obtain a plant fiber mixture;
s2, adding an adhesive into the plant fiber mixture, heating to 170 ℃, and uniformly stirring;
s3, adding the hemp fiber, and uniformly stirring to obtain a mixture;
s4, uniformly dispersing the mixture, and pressing the mixture into a plate by a smooth press roll heated to 140 ℃;
and S5, pressing the plate by using a forming roller with cutter grooves to obtain the degradable plant drainage plate core with drainage grooves.
The core of the degradable plant drainage board obtained in examples 1 to 5 was cut to 100 ± 2mm for performance test, and the results are shown in table 1 below:
table 1 table for testing core performance of degradable plant drain board in examples 1-5
According to the industry standard, the thickness of the core of the drainage plate is required to be more than or equal to 4.5mm, the tensile strength is more than or equal to 1.5 KN/width, and the longitudinal water flow is more than or equal to 40cm3As can be seen from Table 1, the thickness of the core of the drainage plate obtained in examples 1 to 5 reaches the standard, the tensile strength and the longitudinal water flux are obviously higher than the standard values, and the core can be degraded in 7 to 8 months after being inserted into soft soil, so that the reinforcement of the soft soil foundation is ensured, and the environment is not influenced.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The degradable plant drain board core is characterized by comprising the following raw materials in parts by mass: 13-17 parts of straw, 10-13 parts of sawdust, 3-5 parts of reed, 5-8 parts of corncob, 13-17 parts of corn straw, 12-17 parts of wheat straw, 2-5 parts of bamboo fiber, 7-12 parts of rice hull powder, 4-8 parts of hemp fiber or glass fiber and 30-35 parts of adhesive.
2. The degradable plant drain board core of claim 1, which is characterized by comprising the following raw materials in parts by mass: 13-15 parts of straw, 11-13 parts of sawdust, 3-4.5 parts of reed, 6-8 parts of corncob, 13-16 parts of corn stalk, 12-16 parts of wheat stalk, 2-5 parts of bamboo fiber, 8-11 parts of rice hull powder, 4-8 parts of hemp fiber or glass fiber and 30-35 parts of adhesive.
3. The degradable plant drain board core of claim 2, which is characterized by comprising the following raw materials in parts by mass: 15 parts of straw, 12 parts of sawdust, 4 parts of reed, 7 parts of corncob, 15 parts of corn stalk, 15 parts of wheat stalk, 3 parts of bamboo fiber, 10 parts of rice hull powder, 7 parts of hemp fiber or glass fiber and 32 parts of adhesive.
4. The preparation method of the degradable plant drain board core is characterized by comprising the following steps:
s1, uniformly stirring raw materials, namely 13-17 parts of straw, 10-13 parts of sawdust, 3-5 parts of reed, 5-8 parts of corncob, 13-17 parts of corn stalk, 12-17 parts of wheat stalk, 2-5 parts of bamboo fiber and 7-12 parts of rice hull powder in a mixing barrel to obtain a plant fiber mixture;
s2, adding 30-35 parts of adhesive into the plant fiber mixture, heating and uniformly stirring;
s3, adding 4-8 parts of hemp fiber or glass fiber, and uniformly stirring to obtain a mixture;
s4, uniformly dispersing the mixture, and pressing the mixture into a plate by a heated smooth press roll;
and S5, pressing the plate by using a forming roller with cutter grooves to obtain the degradable plant drainage plate core with drainage grooves.
5. The method for preparing the core of the degradable plant drain board as claimed in claim 4, wherein the temperature of the heating and stirring in the S2 is 150-190 ℃.
6. The method for preparing the core of the degradable plant drainage plate as claimed in claim 4, wherein the heating setting temperature of the smooth pressing roller in S4 is 120-180 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910789123.0A CN110653913A (en) | 2019-08-26 | 2019-08-26 | Degradable plant drainage plate core and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910789123.0A CN110653913A (en) | 2019-08-26 | 2019-08-26 | Degradable plant drainage plate core and preparation method thereof |
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| CN110653913A true CN110653913A (en) | 2020-01-07 |
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| CN201910789123.0A Pending CN110653913A (en) | 2019-08-26 | 2019-08-26 | Degradable plant drainage plate core and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111300941A (en) * | 2020-04-07 | 2020-06-19 | 郑希民 | Degradable high-strength drainage plate and preparation method thereof |
| CN113563728A (en) * | 2020-04-29 | 2021-10-29 | 昊博(山东)新材料科技有限公司 | Biodegradable drain board and preparation process thereof |
| CN113733278A (en) * | 2021-05-25 | 2021-12-03 | 付生 | Raw material mixing treatment process of degradable drainage plate |
| CN113733287A (en) * | 2021-05-28 | 2021-12-03 | 付生 | Preparation process of degradable drainage plate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693625A (en) * | 2005-05-16 | 2005-11-09 | 江阴市华宏橡塑厂 | High density polyethylene drainage protection board and its preparation method |
| CN202227331U (en) * | 2011-09-09 | 2012-05-23 | 天津港建设公司 | Degradable plastic water drainage plate |
| CN202323926U (en) * | 2011-11-15 | 2012-07-11 | 南京河海土工合成材料有限公司 | Novel drain board |
| FR2992981A1 (en) * | 2012-07-09 | 2014-01-10 | Snf Sas | IMPROVED PAPER MANUFACTURING METHOD USING POLYMER OBTAINED BY HOFMANN DEGRADATION |
| CN109627799A (en) * | 2018-12-12 | 2019-04-16 | 江苏中联路基工程有限公司 | A kind of degradable drain bar, material compositions and its preparation process |
-
2019
- 2019-08-26 CN CN201910789123.0A patent/CN110653913A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693625A (en) * | 2005-05-16 | 2005-11-09 | 江阴市华宏橡塑厂 | High density polyethylene drainage protection board and its preparation method |
| CN202227331U (en) * | 2011-09-09 | 2012-05-23 | 天津港建设公司 | Degradable plastic water drainage plate |
| CN202323926U (en) * | 2011-11-15 | 2012-07-11 | 南京河海土工合成材料有限公司 | Novel drain board |
| FR2992981A1 (en) * | 2012-07-09 | 2014-01-10 | Snf Sas | IMPROVED PAPER MANUFACTURING METHOD USING POLYMER OBTAINED BY HOFMANN DEGRADATION |
| CN109627799A (en) * | 2018-12-12 | 2019-04-16 | 江苏中联路基工程有限公司 | A kind of degradable drain bar, material compositions and its preparation process |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111300941A (en) * | 2020-04-07 | 2020-06-19 | 郑希民 | Degradable high-strength drainage plate and preparation method thereof |
| CN113563728A (en) * | 2020-04-29 | 2021-10-29 | 昊博(山东)新材料科技有限公司 | Biodegradable drain board and preparation process thereof |
| CN113733278A (en) * | 2021-05-25 | 2021-12-03 | 付生 | Raw material mixing treatment process of degradable drainage plate |
| CN113733287A (en) * | 2021-05-28 | 2021-12-03 | 付生 | Preparation process of degradable drainage plate |
| CN113733287B (en) * | 2021-05-28 | 2022-10-18 | 江苏中联路基工程有限公司 | Preparation process of degradable drainage plate |
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Application publication date: 20200107 |