Preparation method of rice straw brick and its product and application
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of straw straw and mass fraction is applied in the field of preparing straw straw bricks, which can solve the problems such as the inability to play the role of straw bricks well, achieve anticorrosion effect, good thermal performance, small volume change, and is beneficial to large-scale production. Effect
Inactive Publication Date: 2017-01-18
CHONGQING BAOHONG AGRI DEV CO LTD
View PDF6 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
This shows that existing 3 kinds of methods have defects respectively, can not bring into play the effect of straw brick well, now need a kind of preparation method that overcomes above-mentioned defect
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
preparation example Construction
[0027] A novel preparation method of rice straw bricks, the steps are as follows:
[0028] (1) cutting the straw stalks;
[0029] (2) Submerge the cut rice straw in NaOH solution, stir evenly and soak for a period of time;
[0030] (3) filter the soaked rice straw and wash with water for 3-4 times;
[0031] (4) dehydrating and cold-pressing the filtered rice straw;
[0032] (5) Carry out natural maintenance on the bricks obtained after demoulding to obtain straw bricks.
Embodiment 1
[0033] The optimization of the preparation method condition of embodiment 1 rice straw brick
[0034] The present invention optimizes the preparation method of rice straw from the five aspects of NaOH solution immersion concentration, temperature, immersion time, forming pressure, and natural curing time, establishes the best preparation conditions and methods, and measures its physical properties and thermal conductivity The coefficients confirm the reliability of the method.
[0035] 1. Determination of soaking concentration of NaOH solution
[0036] In order to explore the influence of different concentrations of sodium hydroxide solution on the physical properties of straw bricks, the mass fraction of 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8% sodium hydroxide solution was used to treat the straw bricks. After soaking and softening treatment, 8 groups of test pieces were pressed respectively, with 3 pieces in each group. The size is unified as: 160×40×40mm, which will be marked sepa...
Embodiment 2
[0049] Example 2 Experimental Verification of the Preparation Method of Rice Straw Bricks
[0050] 1. Research on thermal conductivity of straw bricks
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention relates to a rice straw brick preparation method as well as rice straw bricks and application of the rice straw bricks. According to the invention, rice straw is pre-treated through a NaOH solution with the mass fraction of 2%-5%, the rice straw brick preparation method is optimized from the five aspects of NaOH solution soaking concentration, temperature, soaking time, forming pressure and natural curing time, and optimal preparation conditions and method are established. The preparation method is simple and convenient, the sizes of formed products are changed slightly, and the formed products are low in density and excellent in anticorrosion effect and thermal performance. Through the preparation method, the rice straw is prepared into the straw bricks, and the straw bricks are used as building wall materials, so that improvement on thermal insulation performance of a building is facilitated, application and popularization of the straw bricks for building thermal insulation are facilitated, and the straw bricks are particularly suitable for thermal insulation of agricultural buildings.
Description
technical field [0001] The invention belongs to the field of building materials, and in particular relates to a method for preparing rice straw bricks and its products and applications. Background technique [0002] With the continuous improvement of building energy-saving and environmental protection requirements, countries all over the world have paid full attention to building energy-saving technology. In the past 30 years, countries have done a lot of work in building design and construction, development and application of new building insulation materials, formulation and implementation of building energy-saving regulations, certification and management of building energy-saving products, not only saving a lot of energy , and achieved considerable economic benefits, while improving the environment and reducing the damage to the atmospheric ozone layer. [0003] According to the latest statistics, there are 700 million tons of straw produced by crops in China every year...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more