Cement-based wood crack elastic repairing agent

A repairing agent, cement-based technology, applied in the field of materials, can solve the problems of poor wetting performance, breeding bacteria, high surface tension, etc., to achieve the effects of strong adhesion, reduced waste, and wide application range

Inactive Publication Date: 2016-07-13
西卡德高(上海)建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Partial defects of wood often affect the beauty of the whole wood and are discarded. Cracks are a very common defect in wood. This kind of crack not only seriously affects the appearance, but also easily causes later deformation and bacteria breeding.
[0003] At present, various wood repair agents have been sold on the market. These repair agents are mainly organic repair agents such as latex, but these materials generally have poor wettability, and their surface tension is large, so it is difficult to fill cracks. Fine parts, and for larger cracks, defects such as flow, bulge, and depression are prone to occur
More importantly, such materials generally contain more volatile organic solvents, which can cause environmental

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: the elastic repairing agent for wood cracks described in this embodiment is composed of the following parts by weight:

[0034] Cement 32

[0035] Sawdust 15

[0036] Rubber powder 5

[0037] Cellulose ether 0.2

[0038] Lignocellulose 0.08

[0039] Water reducer 0.2

[0040] Defoamer 0.2

[0041] Light calcium powder 45

[0042] Surfactant 1.5

[0043] Shrinkage reducer 0.5

[0044] The amount of water added is 25% of the powder weight

[0045] Among them, the cement is Conch 42.5 ordinary Portland cement. The rubber powder is Wacker EVA rubber powder. The cellulose ether is the methyl cellulose ether sold by Shanghai Dino Company, and the viscosity is 50,000. The light calcium powder purchased from the market has a particle size of 325 mesh. The sawdust particle size is 30-40 mesh.

Embodiment 2

[0046] Embodiment 2: the elastic repairing agent for wood cracks described in this embodiment is composed of the following parts by weight:

[0047] Cement 20

[0048] Sawdust 5

[0049] Rubber powder 6

[0050] Cellulose ether 0.1

[0051] Lignocellulose 0.06

[0052] Water reducer 0.1

[0053] Defoamer 0.3

[0054] Light calcium powder 50

[0055] Surfactant 1

[0056] Shrinkage reducer 0.3

[0057] The amount of water added is 23% of the powder weight

[0058] Pigment 1

[0059] Among them, the cement is Yinshan 52.5 white cement. The rubber powder is Wacker EVA rubber powder. The cellulose ether is the methyl cellulose ether sold by Shanghai Dino Company, and the viscosity is 50,000. The light calcium powder is purchased from the market with a particle size of 500 mesh. The pigment is a toner produced by Clariant, Switzerland. The sawdust particle size is 30-40 mesh.

Embodiment 3

[0060] Embodiment 3: the elastic repairing agent for wood cracks described in this embodiment is composed of the following parts by weight:

[0061] Cement 40

[0062] Sawdust 30

[0063] Rubber powder 10

[0064] Cellulose ether 0.3

[0065] Lignocellulose 0.05

[0066] Water reducer 0.2

[0067] Defoamer 0.5

[0068] Light calcium powder 60

[0069] Surfactant 2

[0070] Shrinkage reducer 0.8

[0071] The amount of water added is 26% of the powder weight

[0072] Among them, the cement is Yinshan 52.5 white cement. The rubber powder is Wacker EVA rubber powder. The cellulose ether is the methyl cellulose ether sold by Shanghai Dino Company, and the viscosity is 20,000. The light calcium powder is purchased from the market with a particle size of 400 mesh. The sawdust particle size is 30-40 mesh.

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Abstract

The invention relates to a cement-based wood crack elastic repairing agent.The cement-based wood crack elastic repairing agent is composed of, by weight, 20-40 parts of cement, 5-30 parts of saw dust, 5-10 parts of rubber powder, 0.1-0.3 part of cellulose ether, 0.05-0.8 part of lignocelluloses, 0.1-0.02 part of a water reducing agent, 0.2-0.5 part of a defoaming agent, 45-60 parts of lightweight calcium powder, 1-2 parts of a surfactant and 0.3-0.8 part of a shrinkage reducing agent, wherein water addition quantity is 23-28% of the weight of powder.The cement-based wood crack elastic repairing agent has the advantages of environment friendliness and freeness of pollution; the repairing agent can be prepared in required quantity when needed, so that waste is reduced, and fine adjustment of thickness of the repairing agent can be realized according to crack sizes; the repairing agent is elastic after being dried, high in adhesiveness to wood and free of shrinkage; the repairing agent is applicable to cracks in a range of 0.1-10mm, thereby being extensive in application range.

Description

technical field [0001] The invention belongs to the field of materials, in particular to a repair material, in particular to an elastic repair material for wood cracks. Background technique [0002] Timber has been a very important resource since ancient times. With the rapid development of the current economy and society, forest resources are becoming increasingly scarce. At the same time, the country has increased the protection of forest resources. Combining multiple factors, timber resources are becoming more and more tense. Efficient use of existing timber Resources have become an important topic. Partial defects of wood often affect the beauty of the whole wood and are discarded. Cracks are a very common defect of wood. This kind of crack not only seriously affects the appearance, but also easily causes later deformation and bacteria breeding. [0003] At present, various wood repair agents have been sold on the market. These repair agents are mainly organic repair ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B18/26C04B24/38C04B14/28
CPCY02W30/91
Inventor 程颐卞凤沙董峰亮万德刚张永进何曙光周碧平薛静丁天华王鸿博刘莹琨严昌俊郑徳煜
Owner 西卡德高(上海)建材有限公司
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