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A kind of perlite added bamboo foam composite material and preparation method thereof
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A composite material and perlite technology, applied in the field of building materials, can solve the problems of waste environmental negative impact, non-renewable resources, high thermal conductivity, etc., achieve good thermal insulation performance and flame retardant performance, and reduce costs
Active Publication Date: 2017-01-18
ZHEJIANG FORESTRY ACAD
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[0003] Traditional organic foam insulation materials have excellent thermal insulation properties, and at the same time, the flammable nature of organic matter is difficult to change, which does not meet the requirements of building insulation materials for safety and fire performance. Although commonly used inorganic foam insulation materials have high Fire protection level, good safety, but there are also disadvantages of poor thermal insulation performance and high thermal conductivity
At the same time, most of the raw materials used in the production of existing foaming materials are petrochemical raw materials, which are non-renewable resources; the large-scale use of traditional foaming materials has caused a greater impact on the consumption of increasingly depleted petroleum resources and its waste on the environment. Negative impact
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Embodiment 1
[0019] A kind of perlite adds bamboo foam composite material, and described perlite adds bamboo foam composite material and is composed of bamboo scrap liquefied resin 30g, surfactant OP emulsifier and Tween-80 each 1.5g, curing agent phosphoric acid and 6g and 1.5g of p-toluenesulfonic acid with a mass fraction of 70%, 1.5g of blowing agent n-pentane, 15g of crude MDI and 10g of 20 mesh expanded perlite;
[0020] The bamboo scrap liquefied resin is composed of 100g of phenol, 100g of polyethylene glycol-400, 101.5g of hydrochloric acid with a mass concentration of 37%, 150g of bamboo scrap, 234.5g of NaOH with a mass concentration of 40%, and 237.2g of formaldehyde.
[0021] A kind of preparation method that perlite adds bamboo foam composite material, described method comprises the following steps:
[0022] (1) Preparation of bamboo scrap liquefied resin
[0023] First get phenol 100g, 100g polyethylene glycol-400, mass concentration are 37% hydrochloric acid 101.5g, bamboo...
Embodiment 2
[0028] This example provides three formulations of a perlite-added bamboo foam composite material other than Example 1, and the formulations are shown in Table 1.
[0029] Table 1 A formula of perlite adding bamboo foam composite material, unit: g
[0030]
[0031]
[0032] The preparation method of a perlite-added bamboo foam composite material provided in this example is the same as that in Example 1. Formula 1 in this example has a relatively low resin liquefaction rate, relatively high resin viscosity, and a small proportion of added perlite. In the case of preparing composite materials with the same density, the thermal conductivity of the material is relatively reduced by about 15%. Resin viscosity of formula 2 and formula 3 is low, which is conducive to the mixing and foaming of resin and perlite. But in the case of making a composite material of the same density, the compressive strength of the material dropped by about 20%.
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Abstract
The invention discloses a perlite added bamboo wood foamed composite material and a preparation method thereof and belongs to the field of construction materials. The material is prepared from the following components: 30-40g of bamboo particle liquefied resin, 1-2g of a surfactant OP emulsifier, 1-2g of tween-80, 4-8g of a curing agent phosphoric acid, 1-2g of 70% p-toluenesulfonic acid, 1-3g of a foaming agent n-pentane, 12-18g of coarse MDI (PM-200 methylene polyphenyl isocyanate) and 5-20g of 20-mesh expanded perlite. The method comprises the following steps: preparing the bamboo particle liquefied resin; and mixing the bamboo particle liquefied resin with perlite, the surfactant, the curing agent, the foaming agent, the coarse MDI and the like and foaming. The liquefied foamed composite material has light weight, excellent insulation performance and excellent flame retardance and can be used for effectively reducing the cost of materials.
Description
technical field [0001] The invention relates to the field of building materials, in particular to a liquefied foaming composite material and a preparation method thereof. Background technique [0002] With the rapid development of the economy, the application of foam materials in daily life is also increasing. For example, in construction, the application of foam insulation materials has become the main measure of building energy saving in our country. Especially in recent years, the fire accidents caused by building insulation materials have gradually increased, causing people to pay more and more attention to the safety of building insulation materials. [0003] Traditional organic foam insulation materials have excellent thermal insulation properties, and at the same time, the flammable nature of organic matter is difficult to change, which does not meet the requirements of building insulation materials for safety and fire performance. Although commonly used inorganic fo...
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