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PVC (polyvinyl chloride) foaming fireproof A-level board and preparation method thereof

A technology of PVC resin and foaming agent, which is applied in the field of PVC foamed fireproof A-grade board and its preparation, can solve the problems that the fireproof board has a large proportion, and the fireproof performance cannot meet the A-level fireproof standard, etc., to overcome the large proportion, The effect of high hardness and easy process operation

Inactive Publication Date: 2012-12-12
南京法宁格节能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PVC itself has a certain flame retardancy, and it has inherent advantages when used as a fireproof board. However, the PVC fireproof board produced by conventional extrusion has a large proportion, and its fireproof performance cannot meet the national A-class fireproof standard.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] A preparation method for PVC foamed fireproof grade A board comprises the following steps:

[0026] 1. Ingredients: Select raw materials PVC resin (polyvinyl chloride resin), silicon dioxide, aluminum hydroxide, heat stabilizer, foaming agent, plasticizer according to the ratio, knead in a high-speed kneader, kneading time 20~40 Minutes to obtain uniformly mixed raw materials, wherein the weight ratio of raw materials is: 100 parts by weight of PVC resin (polyvinyl chloride resin), 150-200 parts by weight of silicon dioxide, 20-50 parts by weight of aluminum hydroxide, heat stabilizer 5 -10 parts by weight, 4-20 parts by weight of foaming agent, and 10-20 parts by weight of plasticizer.

[0027] 2. Put the uniformly mixed raw materials into the mold for sealing, heat and pressurize on the flat vulcanizing machine, the heating temperature is 160°-180°, the pressure is 15MPa, keep the pressure and temperature for 20-30 minutes, cool down to 160° to release Pressing to ge...

Embodiment 1

[0030] Select 100 parts of PVC resin, 150 parts of silicon dioxide, 20 parts of aluminum hydroxide, 5 parts of calcium-zinc composite stabilizer, 4 parts of AC foaming agent, 10 parts of dioctyl phthalate (DOP), all added to high-speed kneading The machine kneads at high speed for 30 minutes, puts the uniformly mixed raw materials into the mold and seals them, heats and presses them on the flat vulcanizer, heats the mold to 160° for 20 minutes, and the pressure is 15MPa to make the raw materials plasticized and molded, and continues to heat up to 180° ° Decompose the foaming agent, cool down to 160° and release the pressure to obtain the foaming ratio, cut and trim the edges to obtain the finished product. The described expansion ratio is 10 times.

[0031] According to a preparation method of PVC foamed fireproof A-grade board of the present invention, the physical properties of the PVC board foamed by this formula are: apparent density 113kg / m 3 , compressive strength 13.2k...

Embodiment 2

[0033]Select 100 parts of PVC resin, 175 parts of silicon dioxide, 35 parts of aluminum hydroxide, 7.5 parts of di-n-octyltin dilaurate, 12 parts of AC foaming agent, and 15 parts of epoxy soybean oil, all of which are added to a high-speed kneader for high-speed kneading After 30 minutes, put the uniformly mixed raw materials into the mold and seal it, heat and pressurize it on a flat vulcanizing machine, heat the mold to 160° for 20 minutes, and plasticize the raw materials. The pressure is 15MPa, and continue to heat up to 180° to make foaming The agent is decomposed, the temperature is lowered to 160° and the pressure is released to obtain the expansion ratio, and the finished product is obtained by cutting and trimming. The described expansion ratio is 30 times.

[0034] According to a preparation method of PVC foamed fireproof A-grade board of the present invention, the physical properties of the PVC board foamed by this formula are: apparent density 119kg / m 3 , compres...

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Abstract

The invention relates to a PVC (polyvinyl chloride) foaming fireproof A-level board and a preparation method thereof, in particular to a formulation of a PVC foaming board with a fire rating reaching level A and a preparation process. The preparation method includes selecting PVC resin, silica, aluminum hydroxide, heat stabilizer, foamer and plasticizer to be kneaded in a high-speed kneader, placing uniformly mixed raw materials into a mould for sealing, and heating and pressurizing on a press vulcanizer for foaming, cutting and trimming to obtain a finished product. The raw materials contains, by weight, 100 parts of the PVC resin, 150-200 parts of the silica, 20-50 parts of the aluminum hydroxide, 5-10 parts of the heat stabilizer, 4-20 parts of the foam and 10-20 parts of the plasticizer.

Description

technical field [0001] The invention relates to a PVC foamed fireproof A-grade board and a preparation method thereof, which relate to a formula and a preparation process of a PVC foamed board with a fireproof grade reaching A grade. technical background [0002] In recent years, due to frequent fires, it has brought huge losses to people's lives and properties. Generally, organic fireproof panels can only meet the B1 standard, but cannot meet the A-level standard required by policies and regulations. Builders have re-selected conventional inorganic fireproof panels such as rock wool, but inorganic fireproof panels have their insurmountable shortcomings, such as specific gravity. Large, insufficient raw material resources, etc. These phenomena highlight the lack of A-grade organic fireproof panels in the building materials market. PVC itself has a certain flame retardancy, and it has inherent advantages when used as a fireproof board. However, the PVC fireproof board produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K13/04C08K7/26C08K3/22C08J9/10B29C44/02B29C44/60
Inventor 郭鑫齐杜小刚
Owner 南京法宁格节能科技股份有限公司
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