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Modified magnesium hydroxide fire retardant and high impact polystyrene composite inflaming-retarding material formed by modified magnesium hydroxide fire retardant and manufacturing method

A technology of magnesium hydroxide and polystyrene, applied in the treatment of dyed polymer organic compounds, fibrous fillers, etc., can solve the problems of sacrificing polymer materials, affecting the cost of HIPS/MH composite materials, and the difficulty of evenly dispersing MH

Inactive Publication Date: 2011-10-19
NANJING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when MH is used as a flame retardant and filled into the polymer matrix to prepare a polymer composite flame retardant material, the biggest problem is: in order to ensure the ideal flame retardant effect, generally speaking, the filling amount of MH should be more than 20%. , while the surface of MH is hydrophilic and oleophobic, and has high polarity. Under the condition of such a large filling amount, it is difficult for MH to disperse evenly into the polymer matrix. On the premise of ensuring the flame retardancy, it greatly sacrifices Other properties of materials (such as: mechanical properties, optical properties and processing properties, etc.), which undoubtedly greatly limit the practical application of materials
[0006] As far as the HIPS / MH system is concerned, polystyrene-butadiene-styrene block copolymer (SBS) is the most commonly used compatibilizer. After being modified by SBS, the mechanical properties of HIPS / MH composites are better. improvement, but the current market price of SBS is relatively high, which directly affects the cost of HIPS / MH composite materials

Method used

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  • Modified magnesium hydroxide fire retardant and high impact polystyrene composite inflaming-retarding material formed by modified magnesium hydroxide fire retardant and manufacturing method
  • Modified magnesium hydroxide fire retardant and high impact polystyrene composite inflaming-retarding material formed by modified magnesium hydroxide fire retardant and manufacturing method

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Effect test

Embodiment 1

[0026] Soak 100 grams of HIPS (Nanjing Sinopec Yangzi Petrochemical Co., Ltd., average particle size: 4 mesh) in 100 ml of 98% (mass percent concentration, the same below) concentrated sulfuric acid for 10 minutes at room temperature, drain and wash To neutral, the sulfonated high-impact polystyrene with a sulfonation degree of 24.1% is obtained. MH powder (average particle size: 2.21 μm, BET specific surface 6.79 m 2 / g, Yixing Venture Company) and sulfonated high-impact polystyrene were added into a high-speed mixer and stirred for 20 minutes for modification, wherein the mass of sulfonated high-impact polystyrene was 15% of MH, and the modified MH was obtained. Then HIPS (Nanjing Sinopec Yangzi Petrochemical Co., Ltd.), modified MH and additives (PPO, RDP, TPP and EBS) were mixed with a single-roll extruder for 30 minutes and pelletized, wherein: HIPS, modified MH, The mass percentages of PPO, RDP, TPP and EBS in the composite material were 50, 31, 8, 4, 6 and 1 % respecti...

Embodiment 2

[0031] Soak 100 grams of HIPS (Nanjing Sinopec Yangzi Petrochemical Co., Ltd., average particle size 1 mesh) in 100 ml of 80% concentrated sulfuric acid at room temperature for sulfonation for 15 minutes, wash until neutral, and obtain a sulfonation degree of 10%. High impact polystyrene. MH powder (average particle size: 100 μm, BET specific surface 0.52 m 2 / g, Yixing Venture Company) and sulfonated high-impact polystyrene were added into a high-speed mixer and stirred for 20 minutes for modification, wherein the mass of sulfonated high-impact polystyrene was 10% of MH to obtain modified MH. Then HIPS (Nanjing Sinopec Yangzi Petrochemical Co., Ltd.), modified MH and additives (PPO, RDP, TPP and EBS) were mixed with a single-roll extruder for 60 minutes and pelletized, wherein: HIPS, modified MH, The mass percentages of PPO, RDP, TPP and EBS in the composite material were 60, 21, 8, 4, 6 and 1%, respectively, and the composite flame retardant material was obtained. Then use...

Embodiment 3

[0033] Soak 100 grams of HIPS (Nanjing Sinopec Yangzi Petrochemical Co., Ltd., average particle size: 10 mesh) in 100 milliliters of 50% concentrated sulfuric acid at room temperature for sulfonation for 100 minutes, drain, wash until neutral, and obtain a sulfonation degree of 80% sulfonated high impact polystyrene. MH powder (average particle size: 1 μm, BET specific surface 19.8 m 2 / g, Yixing Venture Company) and sulfonated high-impact polystyrene were added to a high-speed mixer and stirred for 30 minutes for modification, wherein the mass of sulfonated high-impact polystyrene was 20% of MH to obtain modified MH. Then HIPS (Nanjing Sinopec Yangzi Petrochemical Co., Ltd.), modified MH and additives (PPO, RDP, TPP and EBS) were mixed with a single-roll extruder for 60 minutes and pelletized, wherein: HIPS, modified MH, The mass percentages of PPO, RDP, TPP and EBS in the composite material were 55, 26, 8, 4, 6 and 1%, respectively, and the composite flame retardant materia...

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Abstract

The invention relates to a modified magnesium hydroxide fire retardant which is a magnesium hydroxide fire retardant which is formed in a way that sulfonation high-impact polystyrene surface treatment is carried out on magnesium hydroxide powder with average grain diameters of 1-100mum and 0.5-20m2 / g of BET (runauer, emmertt and teller) specific surface area, the sulfonation high-impact polystyrene has 5-80 percent of sulfonating degree, and the weight of the sulfonation high-impact polystyrene is 1-20 percent of that of the magnesium hydroxide. The invention also relates to a high-impact polystyrene composite inflaming-retarding material formed by modified magnesium hydroxide fire retardants, which is prepared by the following ingredients by mass ratio: 50-80 percent of high impact polystyrene, 10-40 percent of improved magnesium hydroxide fire retardants and 5-20 percent of common auxiliaries for other polystyrenes. The composite inflaming-retarding material has 28MPa of tensile strength, 45MPa of bending strength, 5.4kj / cm2 of impact strength and 29 percent of oxygen index. The invention also discloses a manufacturing method of the high impact polystyrene composite inflaming-retarding material.

Description

technical field [0001] The invention relates to a magnesium hydroxide flame retardant and a high-impact polystyrene / magnesium hydroxide composite flame retardant material. Background technique [0002] Styrene resin is one of the five general-purpose synthetic resins, and generally ranks fourth in terms of output after polyethylene (PE), polyvinyl chloride (PVC) and polypropylene (PP). High-impact polystyrene (HIPS) is an important styrene-based resin material developed on the basis of general-purpose polystyrene materials. It not only has the advantages of general-purpose polystyrene, such as rigidity, processability and colorability, but also Its impact strength has been greatly increased, and HIPS is currently widely used in many fields such as packaging, disposable products, appliances and consumer appliances, toys, construction products and decorations. However, as a common disadvantage of general polymer materials, HIPS also has problems such as easy combustion and fa...

Claims

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Application Information

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IPC IPC(8): C08K9/04C08K3/22C09C1/02C09C3/10C08L51/04C08K13/06
Inventor 杨琥周晨刚杨朕周到
Owner NANJING UNIV
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