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

A technology of PVC board and PVC resin, which is applied in the field of PVC foamed fire-proof A-grade board and its preparation, can solve the problems of large proportion of fire-proof board, fireproof performance not up to the A-class fireproof standard, etc., to overcome the large specific gravity and hardness High 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

[0028] The preparation method of PVC foamed fireproof grade A board comprises the following steps:

[0029] Select PVC resin (polyvinyl chloride resin), silicon dioxide, aluminum hydroxide, heat stabilizer, foaming agent, and plasticizer according to the proportion and knead them in a high-speed kneader. The kneading time is 20 to 40 minutes to obtain a uniform mixture. 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, 5-10 parts by weight of heat stabilizer, hair 4-20 parts by weight of the foaming agent, and 10-20 parts by weight of the plasticizer.

[0030] 2. Extrude the uniformly mixed raw materials through an extruder. The extruder heats the raw materials to a melting temperature of 120°C-170°C, and the extrusion temperature is 160°C, and cuts to obtain a pre-foamed PVC board of the required size. The extruder c...

Embodiment 1

[0036] 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, and puts the uniformly mixed raw materials into the twin-screw extruder for extrusion. The extruder heats the raw materials to a melting temperature of 120 ° C ~ 170 ° C, and the extrusion temperature is 160 ° C to obtain the desired size. Foamed PVC board, put the pre-foamed PVC board into the mold and heat it to 160° for 20 minutes, continue to heat up to 180° to decompose the foaming agent, cool down to 160° to release the pressure to obtain the foaming ratio, and then cut and trim , to produce a finished product. The described expansion ratio is 10 times.

[0037] According to the preparation method of PVC foamed fireproof grade A board of the present invention, the physical properti...

Embodiment 2

[0039]Select 100 parts of PVC resin, 175 parts of silicon dioxide, 35 parts of aluminum hydroxide, 7.5 parts of di-n-octyltin dilaurate, 15 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 a twin-screw extruder for extrusion. The extruder heats the raw material to a melting temperature of 120°C-170°C, and the extrusion temperature is 160°C to obtain a pre-foamed PVC board of the required size. , Put the pre-foamed PVC board into the mold and heat it to 160° for 20 minutes, continue to heat up to 180° to decompose the foaming agent, cool down to 160° to release the pressure to obtain the foaming ratio, cut and trim, and make the finished product . The described expansion ratio is 30 times.

[0040] According to the preparation method of PVC foamed fireproof A-grade board of the present invention, the physical properties of the PVC boa...

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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 an extruder to obtain a pre-foamed PVC board, and heating and pressurizing the pre-foamed PVC board 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 PVC foamed fireproof A-grade board and the preparation method thereof of the present invention 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 property. 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 produced b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K13/04C08K7/26C08K3/22C08J9/10
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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