Welcome to visit Scientia Silvae Sinicae,Today is

Scientia Silvae Sinicae ›› 2021, Vol. 57 ›› Issue (8): 167-175.doi: 10.11707/j.1001-7488.20210817

Previous Articles     Next Articles

Preparation and Effect Evaluation of Organic Preservative for Ancient Buildings Wood Biodeterioration

Bin Zhang1,Xingxia Ma1,*,Mingliang Jiang1,Xiaowen Li1,2   

  1. 1. Research Institute of Wood Industry, CAF Beijing 100091
    2. Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences Haikou 571101
  • Received:2020-04-10 Online:2021-08-25 Published:2021-09-30
  • Contact: Xingxia Ma

Abstract:

Objective: In order to satisfy the prevention and control needs of different biological hazards of ancient building wooden components, a kind of water-based organic preservatives were planned to be developed. Method: A series of preservatives were developed by the combination of propiconazole, 1, 2-benzoisothiazolin-3-ketone (BIT) and lambda-cyhalothrin with an excellent anticorrosion effect. The stability of the preservatives and the anti-erosion performances of treated wood were tested, and the anti-corrosion effects of the preparation were comprehensively evaluated by means of laboratory anti-corrosion test and field fast anti-pest test. Result: After diluted 250 times with water, the microemulsions were kept translucent for more than 60 days. These microemulsions were not freeze at-25℃ overnight. The fixation rate of the effective components of the medicament was over 90%. The fixation rate of chemicals in wood was related to their solubility in water. The component with high solubility had a low fixation rate. The appearance color of treated wood was almost unchanged. The result of indoor corrosion resistance test showed that the wood mass loss rate was less than 5% under the condition above 161.3 g·m-3 (propiconazole/lambda-cyhalothrin=20:1). The test result of termite control in the field showed that under the condition of drug loading of 134.8 g·m-3 (propiconazole/lambda-cyhalothrin=20:1), the anti-corrosion performance was 10, and the anti-termite performance could reach 10, and the anti-termite performance of untreated wood was 5.8. Conclusion: Water-based organic preservatives were developed, which could adjust the proportion of effective ingredients flexibly according to the different needs of the actual biological hazard control of ancient buildings. The microemulsion contained propiconazole, BIT and lambda-cyhalothrin, and had effective component content of more than 10%. The microemulsion not only showed stable performances but also had a high fixation rate of its active component in wood, so it had good anti-corrosion and anti-insect effect.

Key words: preservative and insect repellent, organically, microemulsion, ancient buildings wood, wood biodeterioration

CLC Number: