CN104962072A - Flame-retardant PPO/PA (poly-p-phenylene oxide /poly-A) alloy - Google Patents

Abstract

The invention discloses a flame-retardant PPO/PA(poly-p-phenylene oxide/poly-A) alloy which comprises, by weight, 30-50 parts of PPO resin, 40-50 parts of PA resin, 3-5 parts of flexibilizer, 2-4 parts of compatilizer and 12-18 parts of non-halogen flame retardant. The flame-retardant PPO/PA alloy has good processability and flame resistance, is free of halogen and environmentally friendly, has both advantages such as high dimension precision, low water absorption rate, low proportion, high insulation property of the PPO material and high ductility, high oil resistance and high flowability of the PA material, and achieves performance balance of the two materials in a non-compatible system.

Description

Flame-retardant PPO/PA alloy

Technical field

The present invention relates to a kind of polyblend, particularly relate to a kind of flame-retardant PPO/PA alloy.

Background technology

PPO, Chinese polyphenylene oxide, English name: Polyphenylene Oxide.It is one of large general engineering plastic in the world five.It has the advantages such as rigidity is large, thermotolerance is high, difficulty is fired, intensity is excellent compared with high electrical performance.In addition, polyphenylene oxide also has the advantages such as wear-resisting, nontoxic, anti-pollution.The specific inductivity of PPO and dielectric loss are one of minimum kinds in engineering plastics, hardly by the impact of temperature, humidity, can be used for basic, normal, high frequency electric field field.

PA, polymeric amide is commonly called as nylon (Nylon), English name Polyamid eP, and it is the general name of the superpolymer containing amide group in macromolecular main chain repeating unit.Polymeric amide can be obtained by interior acid amide ring-opening polymerization, also can be obtained by diamine and diprotic acid polycondensation etc.Be the resin that DuPont develops at first for fiber, realize industrialization in nineteen thirty-nine.Start development and production injection-molded item the 1950's, the requirement meet the lightweight of downstream industry goods with substituted metal, reducing costs.PA has good over-all properties, comprise mechanical property, thermotolerance, wearability, chemical proofing and self lubricity, and frictional coefficient is low, there is certain flame retardant resistance, be easy to processing, be suitable for, by glass fibre and other filler filling enhancing modified, improving performance and broadened application scope.PA's is various in style, has PA6, PA66, PAll, PAl2, PA46, PA610, PA612, PAl010 etc., and the new variety such as the semi-aromatic nylon PA6T developed in recent years and extraordinary nylon.

PPO/PA alloy combines the advantage of PPO and PA, compensate for its weak point, high comprehensive performance.But flame retardant resistance is not strong.

Summary of the invention

For above shortcomings in prior art, technical problem to be solved by this invention is to provide a kind of flame-retardant PPO/PA alloy.

Technical problem to be solved by this invention is achieved by the following technical solution:

A kind of flame-retardant PPO/PA alloy, comprises following weight parts raw material: PPO resin 30-50 part, PA resin 40-50 part, toughner 3-5 part, compatilizer 2-4 part, halogen-free flame retardants 12-18 part.

Described halogen-free flame retardants is Resorcinol two (diphenyl phosphoester) and/or contains the own interior phosphate flame retardant of DOPO dioxygen.

Described Resorcinol two (diphenyl phosphoester), No. CAS: 125997-21-9, English name: Phosphorictrichloride, polymerwith1,3-benzenediol, phenylester.

Described containing the own interior phosphate flame retardant of DOPO dioxygen, structural formula is as follows:

Described oneself the interior phosphate flame retardant of DOPO dioxygen that contains can adopt method disclosed in Chinese invention patent CN104558684A embodiment 1 to be prepared.

Preferably,

Described halogen-free flame retardants is made up of containing oneself interior phosphate flame retardant of DOPO dioxygen 20-40wt% Resorcinol two (diphenyl phosphoester) and 60-80wt%.

Flame-retardant PPO of the present invention/PA alloy, can adopt the ordinary method of this area to be prepared, and as taken each component by proportioning, after mixing, melting mixing, extruding pelletization, namely obtain described flame-retardant PPO/PA alloy.

Concrete, for take each component by proportioning, in high-speed mixer, rotating speed can be controlled under room temperature at 300-400 rev/min, mix at 3-7 minute, 280-300 DEG C of temperature through twin screw extruder extruding pelletization, namely obtain described flame-retardant PPO/PA alloy.

Flame-retardant PPO of the present invention/PA alloy, there is good processibility and flame retardant resistance, halogen-free environmental, combine the advantage such as high tenacity, oil-proofness, high workability of the characteristics such as the high dimensional accuracy of PPO material, low water absorption, low-gravity, high insulation and PA, reach the balancing performance under non-conforming system.

Embodiment

Below in conjunction with embodiment, the invention will be further described.

In embodiment,

PPO resin, selects the PPO resin of MIT trade mark XP4910.

PA resin, selects the PA66 resin of BASF Aktiengesellschaft trade mark A3K.

Toughner, selects the toughner SEBS of Ke Teng company of U.S. trade mark G1637.

Compatilizer, selects maleic anhydride-g-SBS-g-MAH, specifically selects the maleic anhydride-g-SBS-g-MAH of Asia, Suzhou match plasticizing company limited model MS-9001.

Embodiment 1-3

Each raw material is taken according to embodiment 1-3 data corresponding in table 1.

In high-speed mixer, control high-speed mixer rotating speed under room temperature at 350 revs/min, mix 5 minutes, proceed to after taking-up in twin screw extruder, extruding pelletization at 290 DEG C of temperature, screw machine rotating speed controls at 400 revs/min, namely obtains described flame-retardant PPO/PA alloy.

Table 1: flame-retardant PPO/PA alloy formula table (unit: kilogram)

Raw material	Embodiment 1	Embodiment 2	Embodiment 3
				PPO resin	40	40	40
PA resin	45	45	45
				Toughner	4	4	4
Compatilizer	3	3	3
				Resorcinol two (diphenyl phosphoester)	15	-	4.5
Phosphate flame retardant in own containing DOPO dioxygen	-	15	10.5

Test case

Flame retardant test is carried out to the flame-retardant PPO/PA alloy of embodiment 1-3, tests ten times respectively, average.

Table 2: flame-retardant PPO/PA alloy flame retardant properties test chart

	LOI，％
		Embodiment 1	34.5
Embodiment 2	36.7
		Embodiment 3	38.9
100％ABS	29.4

Contriver is drawn by great many of experiments, by two for halogen-free flame retardants Resorcinol (diphenyl phosphoester) and containing DOPO dioxygen in oneself phosphate flame retardant composite, flame retardant effect is obvious, has cooperative flame retardant effect.

Flame-retardant PPO of the present invention/PA alloy, there is good processibility and flame retardant resistance, halogen-free environmental, combine the advantage such as high tenacity, oil-proofness, high workability of the characteristics such as the high dimensional accuracy of PPO material, low water absorption, low-gravity, high insulation and PA, reach the balancing performance under non-conforming system.

Claims (3)

1. flame-retardant PPO/PA alloy, comprises following weight parts raw material: PPO resin 30-50 part, PA resin 40-50 part, toughner 3-5 part, compatilizer 2-4 part, halogen-free flame retardants 12-18 part.

2. flame-retardant PPO/PA alloy, is characterized in that, comprises following weight parts raw material: PPO resin 30-50 part, PA resin 40-50 part, toughner 3-5 part, compatilizer 2-4 part, halogen-free flame retardants 12-18 part;

Described halogen-free flame retardants is made up of containing oneself interior phosphate flame retardant of DOPO dioxygen 20-40wt% Resorcinol two (diphenyl phosphoester) and 60-80wt%.

3. flame-retardant PPO/PA alloy as claimed in claim 2, is characterized in that, described containing the own interior phosphate flame retardant of DOPO dioxygen, structural formula is as follows: