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A kind of flame-retardant heat-conducting nylon composite material and preparation method thereof

A nylon composite material, flame retardant technology, applied in the field of materials, can solve the problems of large addition amount and poor flame retardant effect, and achieve the effect of preventing combustion

Active Publication Date: 2020-03-31
CHANGZHOU INST OF DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the selection of other non-halogen flame retardants has the disadvantages of poor flame retardant effect and large addition amount.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A flame-retardant heat-conducting nylon composite material, prepared from the following raw materials in parts by weight: 100 parts of nylon-6, 40 parts of heat-conducting filler, 12 parts of alkali-free glass fiber with a diameter of 12 μm to 23 μm, and 50 parts of wollastonite , KH-570 0.3 part, antioxidant 1010 0.1 part, wherein, the thermally conductive filler includes A component and B component, wherein A component is zinc oxide, B component is boron oxide, and the A group The mass ratio of component and component B is 4:1.

[0017] When preparing, put other raw materials except glass fiber into the mixer and mix them for 20 minutes to make them fully mixed, then put the mixture into the twin-screw extruder granulator for melting, the processing temperature is 270°C, the screw speed is 360r / min, glass fiber is fed into the side inlet, extruded and pelletized by a twin-screw extruder to make uniform pellets.

[0018] Process the granules into a sample of 150mm×15...

Embodiment 2

[0022] A flame-retardant thermally conductive nylon composite material, prepared from the following raw materials in parts by weight: 150 parts of nylon-6, 60 parts of thermally conductive filler, 15 parts of alkali-free glass fiber with a diameter of 12 μm to 23 μm, and 70 parts of ceramic filler , KH-570 0.5 parts, antioxidant DLTDP 0.2 parts, wherein, the thermally conductive filler includes A component and B component, wherein A component is boron nitride, B component is boron oxide, and the A The mass ratio of component and B component is 5:1.

[0023] The preparation method is the same as in Example 1.

[0024] Process the granules into a sample of 150mm×150mm×3mm, and place it at a temperature of 23±2°C and a humidity of 50±5% for 48 hours until the quality of the sample is stable. Then put it in the combustion furnace, apply the propane gas fire source for 3 minutes, observe the destruction length of the sample, the afterburning time, the development of smoke, and whe...

Embodiment 3

[0028] A flame-retardant thermally conductive nylon composite material, prepared from the following raw materials in parts by weight: 120 parts of nylon-6, 50 parts of thermally conductive filler, 12 parts of alkali-free glass fiber with a diameter of 12 μm to 23 μm, and 60 parts of ceramic filler , KH-570 0.3 part, antioxidant 1010 0.1 part, wherein, the thermally conductive filler includes A component and B component, wherein A component is zinc oxide, B component is boron oxide, and the A group The mass ratio of component and component B is 4:1.

[0029] The preparation method is the same as in Example 1.

[0030] Process the granules into a sample of 150mm×150mm×3mm, and place it at a temperature of 23±2°C and a humidity of 50±5% for 48 hours until the quality of the sample is stable. Then put it in the combustion furnace, apply the propane gas fire source for 3 minutes, observe the destruction length of the sample, the afterburning time, the development of smoke, and whe...

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Abstract

The invention belongs to the field of materials, and particularly relates to a flame-retardant heat conduction nylon composite material and a preparation method thereof. The lame-retardant heat conduction nylon composite material is prepared from, by weight, 90-150 parts of nylon-6, 30-60 parts of heat conduction filler, 10-15 parts of glass fibers, 30-70 parts of porcelain forming filler, 0.2-0.5part of coupling agent and 0.1-0.2 part of antioxidant; the heat conduction filler includes a component A and a component B; the component A is one of magnesium hydrate, magnesium oxide, zinc oxide,boron nitride and titanium dioxide or an arbitrary composition of magnesium hydrate, magnesium oxide, zinc oxide, boron nitride and titanium dioxide; the component B is boron oxide; the mass ratio ofthe component A to the component B is (4-6):1. The fire-prevention flame-retardant material capable of forming ceramic is adopted to replace traditional flame-retardant agents; when a fire disaster occurs outside, ceramic polymers can be converted into ceramic bodies with compact structures, and the situation is prevented that external flames invade and then cause combustion of internal materials.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a flame-retardant heat-conducting nylon composite material and a preparation method thereof. Background technique [0002] Thermally conductive nylon is the most widely used among all thermally conductive materials because of its low price, high thermal conductivity, and superior thermal radiation performance. Especially in the emerging field of LED lighting, high-end products basically use thermally conductive nylon as heat dissipation material. Compared with traditional aluminum, plastic is easy to process, low in cost, and has better heat radiation performance. In order to meet the requirements of fire resistance and flame retardancy, thermal conductive nylon will add flame retardants to the matrix, most of which are halogen-containing flame retardants, including various chlorine-containing and bromine-containing compounds, which will produce harmful substances and a lot ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08K13/04C08K7/14C08K3/22C08K3/38C08K7/10C08K3/34C09K5/14
CPCC08K3/22C08K3/34C08K3/346C08K3/38C08K7/10C08K7/14C08K13/04C08K2003/222C08K2003/2224C08K2003/2241C08K2003/2296C08K2003/385C08L2201/02C09K5/14C08L77/02
Inventor 李强
Owner CHANGZHOU INST OF DALIAN UNIV OF TECH
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