Bamboo Fence Carbonization and Coating Process
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Solution Overview
Problem
Bamboo materials used for outdoor applications, such as fences, lack anti-corrosion and weather-resistant properties, making them susceptible to damage from air, water, and ultraviolet rays.
Innovation Solution
A bamboo fence making method involving heat treatment, carbonization, and the use of a specialized mold and insect prevention liquid containing antibacterial, loss-resistant, and surface active agents, followed by bamboo oil coating, to enhance durability and resistance to mold and insects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If bamboo materials are used for outdoor building materials, then they provide light-weight, high strength and good toughness, but they have poor antiseptic property and are susceptible to damage from air, water and ultraviolet rays
Solution Approach 1:
The patent applies high-temperature carbonization treatment (heating bamboo to 120-200°C under pressure for 3-5 hours) and heat treatment (baking at 180-250°C for 2-3 hours) to fundamentally change the chemical parameters of bamboo. These thermal treatments decompose natural compounds, kill fungi, and transform the bamboo's internal structure, converting it from a susceptible natural material to a durable carbonized material with enhanced resistance to rot, insects, and weathering while maintaining its mechanical strength properties
Solution Approach 2:
The patent uses mold and insect prevention liquid containing antibacterial agents, loss-resistant agents, and surface active agents as an intermediary substance. This liquid is sprayed onto bamboo before and after heat treatment, forming a protective coating that mediates between the bamboo material and the external environment (air, water, UV rays), providing additional antiseptic protection and enhancing the bamboo's resistance to environmental damage
2Reliability
If high-temperature carbonization treatment is applied to bamboo, then durability and resistance to mold and insects are improved, but energy consumption increases
Solution Approach 1:
The patent optimizes the carbonization process parameters by controlling temperature (120-200°C), pressure (0.2 MPa or above), and time (3-5 hours) to achieve the minimum effective treatment conditions. This allows the bamboo to reach the required durability and anti-corrosion properties while minimizing energy consumption by avoiding excessive temperature, pressure, or time beyond what is necessary for effective carbonization
3Reliability
If multiple heat treatment and coating steps are performed, then mold and insect resistance is enhanced, but manufacturing complexity increases
Solution Approach 1:
The patent applies mold and insect prevention liquid to bamboo at two key stages: before heat treatment (after cutting and straightening) and after heat treatment (after carbonization). This preliminary and follow-up application ensures thorough protection without requiring additional complex post-treatment steps, as the treatment sequence itself is integrated into the manufacturing flow
Solution Approach 2:
The mold and insect prevention liquid serves multiple functions simultaneously: it provides antibacterial protection, water resistance, and surface protection. By combining these functions into a single coating solution applied at strategic points in the process, the patent achieves comprehensive protection without requiring multiple separate treatment systems, thereby reducing manufacturing complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method results in a bamboo fence that is resistant to mold and insects for at least two years, with no environmental pollution, uniform color, and improved durability, while decomposing natural compounds to kill fungi and change the bamboo's color to carbon black, ensuring long-term performance.
Implementation Method 1
baking is performed at the temperature of 180-250° C. for 2-3 hours, then mold and insect prevention liquid is sprayed, then cooling is performed to reach 150-180° C., the temperature is kept for 6-10 hours for heat treatment
Implementation Method 2
the bamboo fence is put in a high-pressure carbonization furnace with the temperature of 120-200° C. and the air pressure of 0.2 MPa or above, heat treatment is performed for 3-5 hours to obtain a carbonized bamboo fence
Implementation Method 3
the carbonized bamboo fence is cooled through water spraying to obtain a rehydrated carbonized bamboo fence
Implementation Method 4
the rehydrated carbonized bamboo fence is dried at a low temperature of 45-60° C. to reach the moisture content of 10-18%
Implementation Method 5
The bamboo oil is prepared by conducting high-temperature pyrolysis at 400-500° C. on the bamboo material to obtain pyrolysis gas and then condensing the pyrolysis gas
Data Source
AI summary
The invention relates to a bamboo fence making method. The method comprises the following steps that (a) a bamboo material is made by adopting raw bamboos; (b) mold and insect prevention liquid is sprayed; (c) a bamboo fence is made; (d) heat treatment is performed; (e) water spraying is performed for cooling; (f) drying is performed. The made bamboo fence does not produce the adverse influence on the environment, also has an insect prevention effect, and the effect duration is at least 2 years.