CN105647142B

CN105647142B - Halogen-free flame-retardant polycarbonate composite material and products thereof

Info

Publication number: CN105647142B
Application number: CN201410642446.4A
Authority: CN
Inventors: 朱付成
Original assignee: Suzhou Hanyang Precision Electronics Co Ltd
Current assignee: Suzhou Hanyang Precision Electronics Co Ltd
Priority date: 2014-11-14
Filing date: 2014-11-14
Publication date: 2018-01-26
Anticipated expiration: 2034-11-14
Also published as: CN105647142A

Abstract

A kind of halogen-free flame-retardant polycarbonate composite material, it represents to include in parts by weight：40 65 parts of polycarbonate resin；5 15 parts of fiberglas chopped strand；25 35 parts of glass flake；13 parts of toughener；45 parts of fire retardant；0.2 0.3 parts of synergistic flame retardant；0.2 0.5 parts of lubricant；0.03 0.05 parts of antioxidant.The halogen-free flame-retardant polycarbonate composite material of the present invention, by adding the components such as a certain proportion of fiberglas chopped strand, glass flake, fire retardant and synergistic flame retardant in polycarbonate resin, make the product after composite shaping that not only there is good anti-flammability, also with good mechanical performance.

Description

Halogen-free flame-retardant polycarbonate composite material and products thereof

【Technical field】

The invention belongs to field of material technology, and in particular to a kind of halogen-free flame-retardant polycarbonate composite material and products thereof.

【Background technology】

Polycarbonate resin (PC) is a kind of unformed thermoplastic of water white transparency, is easily worked because it has, It is suitable for a variety of forming methods such as injection, extrusion molding, blowing, and with preferable mechanics, optical property, is widely used in wrapping In many fields such as dress, commodity, electronic apparatus, toy, instrument, transport and machine manufacture.

The shortcomings that polycarbonate resin is that the easy stress concentration of moulded products causes cracking, case hardness relatively low, not fire-retardant.By A large amount of smog can be discharged when polycarbonate resin is in burning, produce toxic gas, and these harmful gases diffusion speed are remote More than flame spread speed, scene of fire people are injured by flue gas and people are injured in itself much larger than flame, due to flue gas Easily make one to suffocate, so as to lose the escape time of preciousness, therefore the use of polycarbonate resin receives limit in some fields System.

In order to improve the anti-flammability of polycarbonate resin, fire retardant can be added in makrolon.However, add fire retardant Although makrolon afterwards has reached fire-retardant effect, but unexcellent in other mechanical properties, such as rigidity, warpage properties and Dimensional stability etc..

In view of this, it is necessary to develop a kind of halogen-free flame-retardant polycarbonate composite material in fact, to solve the above problems.

【The content of the invention】

Therefore, it is an object of the invention to provide a kind of halogen-free flame-retardant polycarbonate composite material and products thereof, using this Product after composite shaping not only has good anti-flammability, also steady with high rigidity, low warpage properties and preferable size It is qualitative.

In order to achieve the above object, the invention provides a kind of halogen-free flame-retardant polycarbonate composite material, it is by weight Number expression includes：

Preferably, the length of the fiberglas chopped strand is 3 millimeters, filament diameter is 13 microns.

Preferably, the average particle size particle size of the glass flake is 600 microns, thickness is 2-6 microns.

Preferably, the toughener is methylacrylate-butadiene-styrol copolymer.

Preferably, the fire retardant is phosphorus flame retardant.

Preferably, the synergistic flame retardant is polytetrafluoroethylene (PTFE).

Preferably, the lubricant is Tissuemat E.

Preferably, the antioxidant is antioxidant 1010.

In addition, the present invention also provides a kind of product, the product be through the halogen-free flame-retardant polycarbonate composite material into Caused product after type.

Compared to prior art, halogen-free flame-retardant polycarbonate composite material of the invention, by polycarbonate resin Add a certain proportion of fiberglas chopped strand, glass flake, fire retardant, synergistic flame retardant, toughener, lubricant and antioxygen Agent, high rigidity, low warpage properties, the product of preferable dimensional stability is made, wherein flame retardant rating is up to UL94-V0, high rigidity Aspect bending modulus can reach 12000MPa, and due to the fiberglas chopped strand and glass flake of height filling, product into Type shrinkage factor is only 0.1-0.15%, product plane degree also very little, can ensure that material has preferable dimensional stability and low stuck up Qu Xing.

【Embodiment】

To have further understanding to the purpose of the present invention, effect and technological means, the present invention is done in conjunction with embodiment Illustrate below.

The component used in the embodiment is as described below：

Polycarbonate resin is that Japanese Supreme Being people is melted into commercially available, model L-1225Y or L-1225L；

Fiberglas chopped strand is that megalith is commercially available, model ECS-13-03-510；

Glass flake is that NHTechno is commercially available, model REFG-101；

Toughener is that PARALOID is commercially available, model EXL-2330；

Fire retardant is big eight commercially available, the model PX-200 of chemistry；

Lubricant is that Ke Laien is commercially available, model PE-520；

Antioxidant is that vapour bar chemistry is commercially available.

Embodiment 1

By 64.27 parts of polycarbonate resins, 2 parts of toughener, 4.9 parts of fire retardants, 0.3 part of synergistic flame retardant, 0.5 part of lubrication Agent and 0.03 part of antioxidant are added sequentially to high-speed mixer high speed premix 3-5 minutes；Then squeezed with double screw extruder Go out to be granulated, wherein 5 parts of fiberglas chopped strand is sent into extruder, 23 parts of glass flake by dosing machine in main hopper Extruder is forcibly fed into from side feeding machine by dosing machine；The technological parameter of double screw extruder is：One area temperature 230-250 DEG C, two 300-320 DEG C of area's temperature, three 300 DEG C -320 DEG C of area's temperature, four 300-320 DEG C of area's temperature, five 290-300 DEG C of area's temperature, Six 290-300 DEG C of area's temperature, seven 290-300 DEG C of area's temperature, eight 290-300 DEG C of area's temperature, nine 290-300 DEG C of area's temperature, tenth area 290-300 DEG C of temperature, 290-300 DEG C of die head temperature.Engine speed is 400 revs/min, and side feeding machine rotating speed is 200 revs/min Clock, melting extrusion are granulated.

Embodiment 2

By 52.57 parts of polycarbonate resins, 2 parts of toughener, 4.6 parts of fire retardants, 0.3 part of synergistic flame retardant, 0.5 part of lubrication Agent and 0.03 part of antioxidant are added sequentially to high-speed mixer high speed premix 3-5 minutes；Then squeezed with double screw extruder Go out to be granulated, wherein 10 parts of fiberglas chopped strand is sent into extruder, 30 parts of glass squama by dosing machine in main hopper Piece is forcibly fed into extruder by dosing machine from side feeding machine；The technological parameter of double screw extruder is：One area temperature 230-250 DEG C, two 300-320 DEG C of area's temperature, three 300 DEG C -320 DEG C of area's temperature, four 300-320 DEG C of area's temperature, five 290-300 DEG C of area's temperature, Six 290-300 DEG C of area's temperature, seven 290-300 DEG C of area's temperature, eight 290-300 DEG C of area's temperature, nine 290-300 DEG C of area's temperature, tenth area 290-300 DEG C of temperature, 290-300 DEG C of die head temperature.Engine speed is 400 revs/min, and side feeding machine rotating speed is 200 revs/min Clock, melting extrusion are granulated.

Embodiment 3

By 42.77 parts of polycarbonate resins, 2 parts of toughener, 4.5 parts of fire retardants, 0.2 part of synergistic flame retardant, 0.5 part of lubrication Agent and 0.03 part of antioxidant are added sequentially to high-speed mixer high speed premix 3-5 minutes；Then squeezed with double screw extruder Go out to be granulated, wherein 15 parts of fiberglas chopped strand is sent into extruder, 35 parts of glass squama by dosing machine in main hopper Piece is forcibly fed into extruder by dosing machine from side feeding machine；The technological parameter of screw extruder is：One area temperature 230-250 DEG C, two 300-320 DEG C of area's temperature, three 300 DEG C -320 DEG C of area's temperature, four 300-320 DEG C of area's temperature, five 290-300 DEG C of area's temperature, Six 290-300 DEG C of area's temperature, seven 290-300 DEG C of area's temperature, eight 290-300 DEG C of area's temperature, nine 290-300 DEG C of area's temperature, tenth area 290-300 DEG C of temperature, 290-300 DEG C of die head temperature.Engine speed is 400 revs/min, and side feeding machine rotating speed is 200 revs/min Clock, melting extrusion are granulated.

After various embodiments above melting extrusion is granulated, then the injection molding ASTM standard test bars on injection machine, are pressed The mechanical performance of ASTM standard test gained batten, wherein testing impact strength according to ASTM D256, is surveyed according to ASTM D638 Fracture strength and elongation at break are tried, bending strength and bending modulus is tested according to ASTM D790, is tested according to ASTM D955 Molding shrinkage, according to UL-94 standard testing anti-flammabilitys, and flatness is tested, test result is as shown in table 1：

Table 1：The test result of each embodiment

Test event	Embodiment 1	Embodiment 2	Embodiment 3
				Impact strength (KJ/m²)	4.2	4.3	5.0
Fracture strength (Mpa)	72	82	91
				Elongation at break (%)	1.9	1.5	1.1
Bending strength (Mpa)	140	150	165
				Bending modulus (Mpa)	7700	10200	12800
Molding shrinkage (%)	0.12	0.11	0.10
				Anti-flammability (1.5mm)	V-0	V-0	V-0
Flatness (mm)	0.68	0.55	0.43

It can be drawn by table 1：A certain proportion of fiberglas chopped strand, glass squama are added in polycarbonate resin Piece, fire retardant, synergistic flame retardant, toughener, lubricant and antioxidant, the product after composite shaping is set not only to have good Good anti-flammability, also with good mechanical performance, wherein anti-flammability is up to V-0, and bending modulus can reach in terms of high rigidity 12000MPa, and due to the fiberglas chopped strand and glass flake of height filling, can ensure that material has preferable size Stability and low warpage properties, formed product shrinkage factor is only 0.1-0.15% in terms of dimensional stability, in terms of low warpage properties Flatness is especially small.

In addition, the present invention also provides a kind of product, the product be through the halogen-free flame-retardant polycarbonate composite material into Caused product after type, as described above, the product not only has good anti-flammability, also with high rigidity, low warpage properties and Preferable dimensional stability.

Claims

1. a kind of halogen-free flame-retardant polycarbonate composite material, it is characterised in that it represents to include in parts by weight：

The length of the fiberglas chopped strand is 3 millimeters, and filament diameter is 13 microns, the average grain of the glass flake Size is 600 microns, and thickness is 2-6 microns；The fire retardant is phosphorus flame retardant, and the synergistic flame retardant is polytetrafluoroethyl-ne Alkene.

2. halogen-free flame-retardant polycarbonate composite material according to claim 1, it is characterised in that the toughener is propylene Sour methyl esters-BS.

3. halogen-free flame-retardant polycarbonate composite material according to claim 1, it is characterised in that the lubricant is poly- second Alkene wax.

4. halogen-free flame-retardant polycarbonate composite material according to claim 1, it is characterised in that the antioxidant is antioxygen Agent 1010.

5. a kind of product, it is characterised in that the product is through the poly- carbon of halogen-free flameproof any one of Claims 1-4 Caused product after the shaping of acid esters composite.