Raw materials for modified extruded sheet and method for preparing modified extruded sheet

Abstract

The invention provides raw materials for modified extruded sheet. The raw materials comprise polystyrene and a flame retardant, wherein the flame retardant accounts for 6%-12% of parts by weight of polystyrene. The invention also provides a method for preparing the modified extruded sheet from the raw materials for the modified extruded sheet. In the method for preparing the modified extruded sheet, by adding graphite powder and mixing the raw materials, graphite powder, a foaming agent and other additives, the extruded sheet having the characteristics of high strength, high flame-retardant performance, high thermal insulation as well as better stability and lighter weight can be prepared, a good thermal-insulation effect is achieved by the extruded sheet having thinner thickness and thus the weight of the sheet in a unit area is effectively reduced.

Description

【Technical field】 [0001] The invention relates to a modified extruded board raw material and a manufacturing method of the modified extruded board, in particular to a modified extruded board raw material containing flame retardant particles and a method for manufacturing the modified extruded board by using the raw material. 【Background technique】 [0002] With the development of economy and society, saving energy and protecting the environment has become the consensus of mankind, and reducing energy consumption has become the goal of human joint efforts. In order to save energy more effectively, energy-saving buildings have become an important topic. Improving the thermal insulation performance of buildings can have a significant effect on the energy consumption caused by air conditioning. Demand has also increased. [0003] In heat insulation materials, it can be roughly divided into two categories, one is organic polymer materials, and the other is inorganic materials. ...

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Problems solved by technology

[0003] In heat insulation materials, it can be roughly divided into two categories, one is organic polymer materials, and the other is inorganic materials. Well, it has been increasingly widely used in the building materials industry as a thermal insulation board, and inorganic thermal insulation materials have the characteristics of good economy, high compression modulus, and good flame retardancy, but inorganic thermal insulation materials have the characteristics of heavy weight and high water absorption. , brittle and easily broken

Therefore, some operators compound organic materials and inorganic materials, but the thermal insulation building material board after the two are compounded has problems in thickness, and at the same time, it cannot reflect the light texture of organic polymer materials, so that it is actually used in construction. There are many inconveniences

[0004] In addition, in the traditional polystyrene board manufacturing method, various raw materials are added one by one and then stirred. In order to stabilize the quality of the subsequent polystyrene board, it usually needs to be stirred for a certain period of time so that all raw materials are fully and evenly mixed. However, this method takes a long time during the mixing process, which has a great impact on production capacity

[0005] In addition, some people in the industry have proposed a method of making polystyrene boards from expanded graphite, which is to directly modify the expanded graphite and then mix and extrude it with polystyrene. However, in this manufacturing method, expanded graphite is mixed unevenly in polystyrene. problems, which in turn makes the final polystyrene board product structurally unstable due to uneven mixing of expanded graphite, which greatly affects the strength and durability of the polystyrene board

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