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A high heat and high shear resistant, highly flame-retardant, halogen-free flame-retardant compound system and its application

A high flame-retardant, high-shear technology, applied in the field of flame-retardant materials, can solve the problems of low acidity, low shear resistance, low moisture absorption, etc., and achieve the effect of solving flame-retardant problems

Active Publication Date: 2022-05-17
JIANGSU LISIDE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies in this field, the present invention provides a high-heat and high-shear-resistant, highly flame-retardant, halogen-free flame-retardant compound system, which overcomes the defects of existing flame-retardant systems. The newly-invented flame-retardant system has Higher flame retardancy, high heat and high shear resistance, low moisture absorption and low acidity, etc.
[0008] The present invention uses aluminum diethyl hypophosphite to form a synergistic compound flame retardant system resistant to high heat and high shear by synergizing with poly / monophosphite biphosphite and other synergistic compounds that can be added selectively. Solve the shortcomings of existing flame retardant systems such as low shear resistance, easy moisture absorption and high acidity

Method used

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  • A high heat and high shear resistant, highly flame-retardant, halogen-free flame-retardant compound system and its application
  • A high heat and high shear resistant, highly flame-retardant, halogen-free flame-retardant compound system and its application
  • A high heat and high shear resistant, highly flame-retardant, halogen-free flame-retardant compound system and its application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0046] Preparation of monophosphite dihydrogenaluminum phosphite

[0047] The molecular structure of monophosphite dialuminum hydrogen phosphate is shown in the following formula:

[0048]

[0049] The preparation process is: weigh 82g (1mol) of phosphorous acid, 540g (2mol) of aluminum hydrogenphosphite ((H 2 PO 3 ) 3 Al) and the concentrated phosphoric acid (H of 12g concentration 85.1wt%) 3 PO 4 ), dissolved in 1500g of water, fully stirred and mixed evenly, reacted at 85°C for 3 hours, and rotated at -0.08MPa at 85°C to evaporate the water to 50wt%. Transfer the material to an oven, heat up to 130°C, and dry for 120 minutes. The moisture content of the solid is 0.2wt%. The materials were washed and separated until the washing was completed when the conductivity of the washing water was less than 50 μs / cm, dried at 130°C, and the moisture content was 0.08wt%, the materials were pulverized, the average particle size D50 was 40 μm, and the yield was 97.8%, and carried...

Embodiment 1

[0053] The compound flame retardant system is applied to glass fiber reinforced nylon, and the performance of the flame retardant is investigated according to the following steps and test methods.

[0054] 1) Mixing of halogen-free flame retardant system

[0055] Add the components of the compound flame retardant system to the high-speed mixer according to the ratio in Table 1, start high-speed stirring, and stir for 10 minutes to complete the mixing of the halogen-free flame retardant system, discharge, and test for use.

[0056] 2) Extrusion granulation of materials

[0057] Set the temperature of each zone of the twin-screw extruder at the predetermined temperature. After the temperature is stable for 20 minutes, add the nylon system from the hopper, add the glass fiber through the glass fiber inlet, feed the flame retardant system powder through the powder feeding hole, and start the host And feeder to complete the extrusion granulation of the material. The granulated ma...

Embodiment 2

[0074] The implementation process is the same as in Example 1, except that the flame retardant system is three components, and the total amount of the flame retardant system remains unchanged. Other materials and proportioning are shown in Table 1, and the obtained material results are shown in Table 1.

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Abstract

The invention discloses a high-heat and high-shear-resistant, highly flame-retardant, halogen-free, and flame-retardant composite system and its application in glass fiber reinforced materials. In terms of weight percentage, the composition of the flame retardant compound system includes: 40% to 99.9% of aluminum diethyl hypophosphite, 0.1% to 50% of poly / monophosphite diphosphite and / or diphosphite %, inorganic aluminum phosphite 0~40%, zinc-containing heat stable compound 0~10%; The structural formula of described poly / monophosphite diphosphite, diphosphite is shown in the following formula (I) : Wherein: x is an integer of 0-6, n, y and p are an integer of 1-4, and M is Ca, Mg, Al, Zn, Fe, Sn or Ti.

Description

technical field [0001] The invention relates to the technical field of flame retardant materials, in particular to a high heat and high shear resistant high flame retardant halogen-free flame retardant compound system and its application. Background technique [0002] Glass fiber reinforced engineering plastics (such as various nylons, polyesters, etc.) are widely used in electronic appliances due to their good rigidity and impact resistance, low warpage, high dimensional stability, and good surface appearance. field. Applications in these fields require flame retardant materials, and most engineering plastics are flammable materials. After compounding with glass fibers, glass fiber reinforced engineering plastics are easier to burn due to the wick effect of glass fibers. Therefore, when glass fiber reinforced engineering plastics are applied in these fields, it is necessary to solve the problem of flame retardancy, and the existence of the wick effect makes it more difficu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/5313C08K3/32C08K3/38C08K3/22C08J5/04C08L77/06C08L67/02C08L73/00C08K13/04C08K7/14
CPCC08K5/5313C08K3/32C08K3/38C08K3/22C08J5/043C08J2377/06C08J2367/02C08J2373/00C08K13/04C08K7/14C08K2003/2231C08K2003/2296C08K2201/014C08K2201/005C08K2003/387C08K3/24C08L77/06
Inventor 雷华李金忠
Owner JIANGSU LISIDE NEW MATERIAL
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