Novel straw insulation board and preparation method thereof

A technology of thermal insulation board and straw, which is applied in the field of building materials, can solve problems such as environmental damage and waste of resources, and achieve the effect of low cost and simple and easy-to-operate production methods

Active Publication Date: 2014-03-12
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Crop straw is an important material resource. Improper disposal will not only cause waste of resources, but also cause damage to the environment. Utilization will definitely have a profound impact on the development of sustainable rural economy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A new type of straw insulation board is made of raw materials with the following weights (kg):

[0030] Corn stalks 70

[0031] Epoxy glue 5

[0032] Potassium dihydrogen phosphate powder 2

[0033] Magnesium oxide powder 10

[0034] Sodium tetraborate powder 0.5

[0035] jade powder 4

[0036] Pearlite 10

[0037] Modified Kaolin 6

[0038] water 35.

[0039] The preparation method of the modified kaolin is as follows: put the kaolin at 705°C for 3 hours, cool it to room temperature, place it in a hydrochloric acid solution with a concentration of 15%, heat it in a water bath to 80°C, keep it warm for 30 minutes, filter, and distill the Filter residue is washed to neutral, dried, and then add sepiolite powder equivalent to 6% of kaolin weight, 5% vermiculite powder, 4% asbestos powder, 2% calcium lignosulfonate and 0.5% gamma-aminopropyl triethoxysilane, high-speed grinding for 20min; finally add 10% silica sol equivalent...

Embodiment 2

[0045] Rice straw 80

[0046] Epoxy glue 10

[0047] Lithium dihydrogen phosphate powder 4

[0048] Zinc oxide powder 15

[0049] Sodium Potassium Tetraborate Powder 2

[0050] jade powder 5

[0051] Pearlescent sand 12

[0052] Modified Kaolin 8

[0053] water 45.

[0054] The preparation process is the same as in Example 1, and its thermal conductivity is measured to be about 26mW / m.K, and the compressive strength is 78kg / m 3 about.

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Abstract

The invention discloses a novel straw insulation board, and the straw insulation board is prepared from the following raw materials in parts by weight: 40-80 parts of straw, 5-20 parts of epoxy glue, 1-10 parts of univalent dihydric phosphate powder, 3-20 parts of metallic oxide powder, 0.5-5 parts of borate powder, 3-6 parts of jade powder, 8-12 parts of pearlite, 5-10 parts of modified kaolin and 30-50 parts of water. The straw insulation board comprises a core material layer and a cladding layer, the core material layer is mainly prepared by press-forming the epoxy glue, the jade powder, the pearlite and the straw, the surface cladding layer is obtained by mainly uniformly cladding an inorganic cementing material with an adhesion effect on the surface layer of the straw board, and therefore, the novel straw insulation board using the straw as a board is obtained. The novel straw insulation board has excellent performances of fast forming, preserving heat and insulating, flame retarding, mould proofing and high strength, and has a clear market prospect whether being applied to the building field or other related fields in future.

Description

technical field [0001] The invention relates to a novel straw insulation board and a preparation method thereof, belonging to the field of building materials. Background technique [0002] Crop straw is the largest by-product of agricultural production. In recent years, the rural economy has developed rapidly and housing conditions have improved. 80% of households have used electrical appliances and liquefied petroleum gas, and some use biogas. Winter heating has turned to electricity and coal. . Therefore, the use rate of farmers for straw is decreasing year by year, and some are even burned directly. This will not only cause great pollution to the environment, but sometimes cause greater economic losses. According to information, the comprehensive utilization rate of straw in the country is 24 %about. Crop straw is an important material resource. Improper disposal will not only cause waste of resources, but also cause damage to the environment. Utilization will definit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/14C04B18/24
CPCY02W30/91
Inventor 刘研研王化田兴友陈林
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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