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Rubber-wood-cement composite material

A technology for cement composite materials and wood materials, which is applied in the field of cement-based composite materials to achieve the effects of increasing functionality, improving the degree of continuity and labor productivity, and being easy to process.

Active Publication Date: 2011-07-27
BEIJING ZHONGYANYI ENG TECH DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006]However, due to the large difference between material properties, it is difficult to organically integrate these three raw materials in the existing technology, making it difficult to carry out research and application of composite materials

Method used

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  • Rubber-wood-cement composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Raw materials: 10 kg of rubber particles, 17 kg of wood shavings, 45 kg of cement, 0.3 kg of polyisocyanate (PMDI), 1.5 kg of sodium silicate, 14 liters of water, and 2% sodium hydroxide aqueous solution.

[0047] Raw material pretreatment: use waste tire rubber as raw material, process it into granule, the geometric size of rubber granule is 1mm. 0.15 kg of acetone (40% of the amount of PMDI) is fully mixed with PMDI and then poured into a hand-pressed watering can. The PMDI mixture is atomized by a pressure pump and evenly applied to the surface of the rubber particles.

[0048] The wood material is wood shavings, which are mixed with ordinary industrial wood shavings with geometric dimensions of 2mm-15mm in length, 0.2-20mm in width, and 0.2-2.0mm in thickness, which may contain sawdust. Prepare an aqueous solution with a mass concentration of 2% with sodium hydroxide, soak 17 kg of wood shavings for 5 hours, take them out and dry them until the water content is abou...

Embodiment 2

[0055] Raw material ratio: 12 kg of rubber particles, 18 kg of wood shavings, 42 kg of cement, 0.36 kg of polyisocyanate, 0.5 kg of organic reinforcing material PC, 1.5 kg of sodium silicate, 14 kg of water, and 2% sodium hydroxide aqueous solution.

[0056] Raw material pretreatment: use waste rubber tires as raw materials, use the same method as in Example 1 to make rubber granules with a geometric size of 2 mm, and apply the mixture of MDI and acetone evenly on the surface of the rubber granules.

[0057] The wooden material is selected from wood processing residues, and wood shavings with a length of 2 mm to 15 mm, a width of 0.2 to 20 mm, and a thickness of 0.2 to 2.0 mm are selected for mixing; the wood shavings are soaked in 2% sodium hydroxide aqueous solution for 5 hours, taken out and dried until The moisture content is about 7%.

[0058] The cement is made of ordinary Portland cement with a model number of 52.5.

[0059] The organic reinforcing material PC is a com...

Embodiment 3

[0063] Raw material ratio: 5 kg of rubber particles, 40 kg of short-needled rod-shaped wood shavings, 40 kg of cement, 0.4 kg of polyisocyanate, 0.2 kg of glass fiber, 0.8 kg of potassium sulfate, and 10 kg of water. The preparation process is similar to that of Example 1, except that the rubber particles are made of waste rubber product rubber soles, and the geometric size is 0.5mm; the wood material is selected from wood processing residues, and processed into about 25mm in length and 10mm in diameter The short-needled rod-shaped wood shavings are soaked in 2% sodium hydroxide aqueous solution for 5 hours and then dried to a moisture content of about 12%; the thickness of the slab is 12mm, and it is pressed at room temperature with a pressure of 3MPa and a time of 25min. .

[0064] Sheet properties: density is 1198kg / m 3 , static bending strength ≥ 14.3MPa, elastic modulus ≥ 2786MPa, tensile strength ≥ 4.7MPa, water absorption thickness expansion rate ≤ 5.1%, average bendin...

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Abstract

The invention provides a rubber-timber-cement functional environment-friendly compound material, which belongs to the field of cement-base compound material. The material adopts the waste tire rubber, waste rubber products, woody material and silicate cement as raw materials, an isocyanate-based adhesive is coated on the surface of the waste rubber particles, then the woody material is soaked anddried, and the treated rubber particles, the woody material and cement are mixed to form a blank material, which is finally laid, pressed and cured so as to obtain the compound material. The compoundmaterial provided by the invention can absorb and insulate sound, has high shock resistance and damping property, and is wear-resistant, antistatic, mothproof, waterproof and anticorrosive; also the material is heat-insulating and friendly to the environment, etc.; the production process has no chemical pollution source, no radioactivity, no light pollution and no noise. The invention blazes a new path for solving the 'black pollution' of increasing waste tires, which is a global problem; additionally, the compound material can be used for producing structural lumber.

Description

technical field [0001] The invention relates to a novel building material, which belongs to the field of cement-based composite materials, in particular to a rubber-wood-cement functional green and environment-friendly composite material. Background technique [0002] Materials science and engineering are the material basis of human civilization, and the use of materials is closely related to a country's productivity and the development level of science and technology in a historical period. The variety and output of materials are one of the important symbols to measure a country's science and technology, economic development and people's living standards. [0003] Cement, wood, steel and plastics are the four major raw materials in today's world. my country is a big country in the cement industry. As one of the pillars of my country's basic raw material industry, the cement industry plays a pivotal role in the sustainable development of the national economy. With the dev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B18/22C04B18/26
CPCY02W30/91
Inventor 姚燕崔琪赵君
Owner BEIJING ZHONGYANYI ENG TECH DEV CENT
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