KR102066597B1 - Thermoplastic resin composition and method for preparing the same - Google Patents

Abstract

The present disclosure relates to a thermoplastic resin composition and a molded article prepared therefrom, and more particularly, to (A) 10 to 90% by weight of a vinyl cyan compound-conjugated diene-aromatic vinyl compound copolymer and an aromatic vinyl compound-vinyl cyan compound copolymer. 100 parts by weight of the base resin consisting of 10 to 90% by weight; (B) 6 to 30 parts by weight of the urethane phosphorus modified epoxy resin; (C) 1 to 20 parts by weight of a phosphorus flame retardant; (D) 1 to 10 parts by weight of the silicone compound; And (E) 0.1 to 5 parts by weight of calcium carbonate; relates to a thermoplastic resin composition comprising a molded article prepared therefrom.
According to the present disclosure, there is an effect of providing a thermoplastic resin composition having excellent mechanical properties and heat resistance and excellent flame retardancy and a molded article produced therefrom.

Description

Thermoplastic resin composition and molded article manufactured therefrom {THERMOPLASTIC RESIN COMPOSITION AND METHOD FOR PREPARING THE SAME}

The present disclosure relates to a thermoplastic resin composition and a molded article prepared therefrom, and more particularly, to a thermoplastic resin composition having excellent flame retardancy while having excellent mechanical properties and heat resistance.

Acrylonitrile-Butadiene-Styrene (hereinafter referred to as ABS) resin is an exterior material for electrical and electronic products and office equipment due to the stiffness and chemical resistance of acrylonitrile and the processability and mechanical strength of butadiene and styrene. It is widely used. ABS resins, however, have very little resistance to fire since they can easily burn.

Due to these problems, ABS resins used in electrical and electronic products and office equipment must satisfy the flame retardant specifications in order to guarantee the fire safety of electrical and electronic products.

As a method of imparting flame retardancy, a method of polymerizing a flame retardant monomer is included in preparing a rubber modified styrene resin and a method of mixing a flame retardant and a flame retardant aid with the manufactured rubber modified styrene resin, such as a halogen flame retardant There are non-halogen flame retardants such as a phosphorus flame retardant, and the flame retardant aids include antimony compounds, zinc compounds, polysiloxane compounds, and the like. However, when halogen-based flame retardants are added, corrosive toxic gases such as HBr and HCl are generated due to the high temperature and pressure generated when the ABS resin is processed, which adversely affects the working environment and the human body. This is a problem that occurs in the combustion process of the ABS resin containing a halogen-based flame retardant.

Therefore, researches to solve the above problems have been actively conducted, and the method of using a phosphorus-based flame retardant has attracted the most attention in terms of environment, flame retardant efficiency and cost.

However, the phosphorus-based flame retardant should be added in excess of the halogen flame retardant, and the char former should be added in the case where the base resin is difficult to form char because the flame retardancy is mainly due to the solid phase reaction. In this process, since the physical properties of the base resin can be greatly impaired, a technique for minimizing the amount of phosphorus-based flame retardant and char former is required.

On the other hand, there is a UL-94 vertical combustion test method for the flame retardancy standard and the flame retardancy determination test method, which is a rule for determining the flame resistance from internal ignition due to short circuit, short circuit, short circuit, etc. of the circuit board inside the electronic product. The V-1 rating of UL-94's vertical combustion test method does not allow CI (Cotton Ignition), which results in sparks falling from burning specimens that ignite on cotton lying approximately 30 cm below, and 60 seconds after the specimen is lit. V-0 rating is not allowed, CI is not allowed, and the burning time should not exceed 10 seconds. The same test is carried out 10 times with 5 sets of 5 specimens. It should not be exceeded.

Korean Patent Publication No. 2004-0063415 (published Jul. 14, 2004)

In order to solve the problems of the prior art as described above, an object of the present invention is to provide a thermoplastic resin composition having excellent flame retardancy while maintaining excellent mechanical properties and heat resistance, and a molded article manufactured therefrom.

The above and other objects of the present disclosure can be achieved by the present disclosure described below.

In order to achieve the above object, the present base is (A) a base resin consisting of 10 to 90% by weight of a vinyl cyan compound-conjugated diene-aromatic vinyl compound copolymer and 10 to 90% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer 100 parts by weight; (B) 6 to 30 parts by weight of the urethane phosphorus modified epoxy resin; (C) 1 to 20 parts by weight of a phosphorus flame retardant; (D) 1 to 10 parts by weight of the silicone compound; And (E) 0.1 to 5 parts by weight of calcium carbonate; provides a thermoplastic resin composition having excellent mechanical properties and heat resistance and excellent flame retardancy, and a method for producing the same.

In addition, the present invention provides a molded article prepared from a thermoplastic resin composition having excellent flame retardancy while maintaining excellent mechanical properties and heat resistance.

According to the present disclosure, a thermoplastic resin composition having excellent flame retardancy, mechanical properties, and heat resistance by using a combination of a urethane phosphorus modified epoxy resin and calcium carbonate in a resin composition having no self-charging effect and having difficulty in applying a phosphorous flame retardant system, and a method of manufacturing the same; This has the effect of providing a molded article prepared.

Hereinafter, the present description will be described in detail.

The thermoplastic resin composition of the present disclosure comprises (A) 100 parts by weight of a base resin consisting of 10 to 90% by weight of a vinyl cyan compound-conjugated diene-aromatic vinyl compound copolymer and 10 to 90% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer; (B) 6 to 30 parts by weight of the urethane phosphorus modified epoxy resin; (C) 1 to 20 parts by weight of a phosphorus flame retardant; (D) 1 to 10 parts by weight of the silicone compound; And (E) 0.1 to 5 parts by weight of calcium carbonate; characterized in that it has an excellent mechanical properties and heat resistance within this range, but has an excellent flame retardancy.

Looking at each component constituting the thermoplastic resin composition of the present invention in detail as follows.

(A) Base Resin

The base resin may include, for example, 10 to 90 wt% of a vinyl cyan compound-conjugated diene-aromatic vinyl compound copolymer and 10 to 90 wt% of an aromatic vinyl compound-vinyl cyan compound copolymer; 20 to 50% by weight of vinylcyan compound-conjugated diene-aromatic vinyl compound copolymer and 50 to 80% by weight of aromatic vinyl compound-vinylcyan compound copolymer; Or 25 to 35% by weight of vinylcyan compound-conjugated diene-aromatic vinyl compound copolymer and 65 to 75% by weight of aromatic vinyl compound-vinylcyan compound copolymer; It may be made, there is an excellent mechanical properties within this range.

The vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer is not particularly limited, but is prepared by emulsion graft polymerization. For example, the conjugated diene based on the total weight of the vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer The compound is 40 to 85% by weight, 45 to 75% by weight, 50 to 65% by weight, or 50 to 60% by weight, there is an effect excellent in impact strength and workability within the above range.

The vinyl cyan compound may be, for example, 5 to 40 wt%, 10 to 35 wt%, 15 to 30 wt%, or 20 to 30 wt% based on the total weight of the vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer. It can be, the physical properties balance within the above range has an excellent effect.

The aromatic vinyl compound may be, for example, 10 to 55 wt%, 15 to 45 wt%, 20 to 35 wt%, or 20 to 25 wt% based on the total weight of the vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer. In the above range, there is an effect excellent in compatibility with the aromatic vinyl compound-vinyl cyan compound copolymer.

The emulsion graft polymerization is, for example, 40 to 85 parts by weight of the conjugated diene compound, 0.1 to 5 parts by weight of an emulsifier, and a molecular weight modifier based on 100 parts by weight of the total monomers contained in the vinyl cyan compound-conjugated diene compound-aromatic vinyl compound copolymer. It is preferable to carry out continuously or collectively adding the monomer mixture containing 5-40 weight part of vinyl cyan compounds and 10-55 weight part of aromatic vinyl compounds to the mixed solution which consists of 0.1-3 weight part and 0.05-1 weight part of polymerization initiators.

In addition, the vinyl cyan-conjugated diene compound-aromatic vinyl compound copolymer may be prepared in powder form by, for example, emulsion graft polymerization and then coagulation, dehydration, and drying.

The aggregation is preferably carried out using, for example, an aqueous sulfuric acid or sulfate solution at a concentration of 1 to 10 wt%, or an aqueous sulfuric acid or sulfate solution at a concentration of 1 to 5 wt%.

The aromatic vinyl compound-vinyl cyan compound copolymer has, for example, a weight average molecular weight of 10,000 to 300,000 g / mol, 30,000 to 200,000 g / mol, or 110,000 to 130,000 g / mol, and a content of vinyl cyan compound of 5 to 50 weight. %, 10 to 40% by weight, or 20 to 30% by weight, there is an excellent balance of physical properties within the above range.

The vinyl cyan compound may be at least one selected from the group consisting of, for example, acrylonitrile, methacrylonitrile, and ethacrylonitrile.

The aromatic vinyl compound may be, for example, one or more selected from the group consisting of styrene, alpha-methylstyrene, para-methylstyrene, and vinyltoluene.

The conjugated diene compound is, for example, one selected from the group consisting of 1,3-butadiene, 2,3-dimethyl-1,3-butadiene, 2-ethyl-1,3-butadiene, 1,3-pentadiene and isoprene It may be abnormal.

(B) Urethane Phosphorus Modified Epoxy Resin

The urethane phosphorus-based modified epoxy resin (B) may be, for example, 6 to 30 parts by weight, 8 to 27 parts by weight, 10 to 25 parts by weight, or 12 to 18 parts by weight, and have excellent flame retardancy and thermal stability within this range. This and the physical property balance is excellent effect.

For example, the urethane phosphorus-modified epoxy resin may be compatible with the base resin, and may generate char when the processed thermoplastic resin is burned, and may include phosphorus to promote dehydrogenation. It is not particularly limited.

The urethane phosphorus-modified epoxy resin is, for example, a resin comprising a repeating unit represented by the following formula (1) and a repeating unit represented by the following formula (2); Or a resin comprising a repeating unit represented by the following Chemical Formula 1, a repeating unit represented by the following Chemical Formula 2, and a repeating unit represented by the following Chemical Formula 3; satisfying the flame retardancy of the UL-94 standard V-1 or V-0 grade It is preferable in view of the aspect to be made.

In Formulas 1, 2, and 3, R ₁ , R ₂ , and R ₃ are each independently hydrogen, alkyl having 1 to 20 carbon atoms, aryl having 6 to 24 carbon atoms, or alkylaryl having 7 to 30 carbon atoms.

X and Y are each independently unsubstituted carbon atoms of 1 to 20 carbon atoms or alkylene substituted by oxygen or nitrogen, unsubstituted carbon atoms of 6 to 24 or arylene substituted by oxygen or nitrogen, or unsubstituted carbon atoms of 7 to 30 Or arylalkylene substituted with oxygen or nitrogen.

N ₁ is an integer of 0 to 100, or 1 to 100, and n ₂ and n ₃ are each an integer of 1 to 100.

Z is an integer of 1 to 3.

As a preferred example, the urethane phosphorus-based modified epoxy resin may have a structure of Formula 4 below.

N ₁ "is an integer of 0 to 100, or 1 to 100, and n ₂ " and n ₃ "are each an integer between 1 and 100.

Z is an integer of 1 to 3.

(C) take over Flame retardant

The (C) phosphorus flame retardant may be, for example, 1 to 20 parts by weight, 1 to 10 parts by weight, 1 to 9 parts by weight, or 3 to 7 parts by weight, and has excellent effects in mechanical strength and thermal stability within this range. .

The (C) phosphorus flame retardant is a group consisting of, for example, a phosphate compound, a diphosphate compound, a polyphosphate compound having three or more phosphate groups, a phosphonate compound, a phosphinate compound, and a diethylphosphinic acid metal compound. At least one selected from, the metal may be at least one selected from the group consisting of alkali metal, alkaline earth metal, zinc and aluminum.

Specific examples of the (C) phosphorus flame retardant is a phosphate compound represented by triphenyl phosphate, tricresyl phosphate, tri (2,6-dimethylphenyl) phosphate, tri (2,4,6-trimethylphenyl) phosphate, tetra Diphosphate compounds such as phenylresosocinol diphosphate, tetracresyl socinolic diphosphate, tetra (2,6-dimethylphenyl) resosocinol diphosphate, tetraphenylbisphenol A diphosphate, and polyphosphate compounds having three or more phosphate groups And organic phosphorus flame retardants such as phosphonate compounds and phosphinate compounds may be used alone or in combination of two or more thereof.

The phosphorus-based flame retardant may include, for example, 5 to 15% by weight, or 5 to 9% by weight of phosphorus, and has an excellent balance of physical properties within this range.

(D) silicone compound

The silicone compound (D) may be, for example, 1 to 10 parts by weight, 1 to 8 parts by weight, or 2 to 7 parts by weight, and has an excellent balance of physical properties within this range.

The silicon-based compound may be, for example, polyalkylsiloxane or polyalkylsiloxane represented by Formula 5 below.

R ₅ and R ₈ are independently C ₁ to C ₂₀ , C ₁ to C ₁₀ , or C ₁ to C ₅ alkyl group, and R ₆ , R ₇ are independently C ₁ to C ₁₀ , C ₁ to C ₅ , or a C ₁ to C ₃ alkyl group, m is an integer of 0 to 300, or 1 to 300.

The polyalkylsiloxane may be, for example, polyalkylsiloxane.

The silicone compound has a viscosity of 100,000 cst or more, 110,000 to 10,000,000 cst, or 300,000 to 5,000,000 cst, and serves to prevent dripping of the thermoplastic resin composition during combustion within this range.

(E) calcium carbonate

The (E) calcium carbonate may include 0.1 to 5 parts by weight, 1 to 5 parts by weight, or 1 to 3 parts by weight, and no dropping occurs within this range, thereby improving flame retardancy and excellent melt index. It works.

The calcium carbonate (E) may have an average particle diameter of 0.1 to 50 μm, 1 to 30 μm, or 10 to 20 μm, and has excellent flame retardancy while maintaining mechanical properties within this range.

The average particle diameter of (E) calcium carbonate may be measured using an intensity Gaussian distribution (Nicomp 380) by dynamic laser light scattering.

The thermoplastic resin composition may further include at least one selected from the group consisting of char forming agents, impact modifiers, lubricants, anti drip agents, antioxidants, sunscreens and light stabilizers.

For example, the thermoplastic resin composition may have an Izod impact strength (1/4 ″) of 10 to 40 kgf · cm / cm, or 14 to 40 kgf · cm / cm, and have excellent mechanical properties and balance of physical properties within this range. Has an excellent effect.

For example, the thermoplastic resin composition may have a heat deformation temperature (HDT) of 70 to 85 ° C., or 74 to 85 ° C., and has excellent heat resistance within this range and excellent balance of physical properties.

In the thermoplastic resin composition, for example, 3.0 mm UL-94 may be V-0 or V-1. In this range, the thermoplastic resin composition may have excellent flame retardancy and excellent balance of physical properties.

The method for producing a thermoplastic resin composition of the present disclosure is, for example, (A) 10 to 90% by weight of a vinyl cyan compound-conjugated diene-aromatic vinyl compound copolymer and 10 to 90% by weight of an aromatic vinyl compound-vinyl cyan copolymer compound. 100 parts by weight of the base resin; (B) 6 to 30 parts by weight of the urethane phosphorus modified epoxy resin; (C) 1 to 20 parts by weight of a phosphorus flame retardant; (D) 1 to 10 parts by weight of the silicone compound; And (E) 0.1 to 5 parts by weight of calcium carbonate; may be added to the extruder kneading and extruding at a barrel temperature of 180 to 250 ℃.

Provided is a molded article, which is produced from the thermoplastic resin composition of the present disclosure.

Hereinafter, preferred examples are provided to help understanding of the present invention, but the following examples are merely for exemplifying the present invention, and various changes and modifications within the scope and spirit of the present invention are apparent to those skilled in the art. It is natural that such variations and modifications fall within the scope of the appended claims.

EXAMPLE

The compound used in the following Example and the comparative example is as follows.

* ABS: ABS copolymer prepared by emulsion graft polymerization including butadiene rubber latex having an average particle diameter of 0.3 μm, wherein the air is 55% by weight butadiene rubber, 20% by weight styrene and 25% by weight acrylonitrile. coalescence

* SAN: copolymer having an acrylonitrile content of 25% by weight and a weight average molecular weight of 120,000 g / mol

* AMSAN: Copolymer having 25% by weight of acrylonitrile and 75% by weight of alpha-methylstyrene and having a weight average molecular weight of 100,000 g / mol

* Epoxy Resin-1 (Urethane Phosphorus-Modified Epoxy Resin): Prepared by reacting DOPO (Formula 6) with an unreacted epoxy group of a urethane-modified epoxy resin such as the following epoxy resin-2 in a molar ratio of 1: 1.2. Suji (a prototype of Kukdo Chemical Co., Ltd.).

* Epoxy Resin-2 (Urethane Modified Epoxy Resin): KD-1090 (Kukdo Chemical Co., Ltd.)

* Epoxy resin-3 (o-cresol noblock epoxy resin): YDCN-500-90P (Kukdo Chemical Co., Ltd.)

* Epoxy Resin-4 (Phenol Noble Epoxy Resin): YDPN-637 (Kukdo Chemical Co., Ltd.)

* Phosphorus flame retardant: PX-200 (Daihachi Co., Ltd.), aromatic polyphosphate flame retardant with 9.0%

* PDMS (silicone compound): 300,000 cst polydimethylsiloxane compound (Dow Corning)

* PDMS low (low viscosity silicone compound): 1000 dimethyl polydimethylsiloxane compound (Dow Corning)

CaCO ₃ : (Aldrich)

* Al ₂ O ₃ : (Aldrich)

Na ₂ O ₃ : (Aldrich)

Example  1 to 3 and Comparative example  1 to 10

As shown in Tables 1 and 2, each component was added in the corresponding content, mixed in a mixer, extruded using a twin-screw extruder under the conditions of 200 to 220 ° C, and prepared in pellet form to 80 ° C. After drying for more than 4 hours at injection molding to prepare a physical specimen, and left for 48 hours at room temperature and then measured the physical properties.

[Test Example]

The properties of the thermoplastic resin compositions prepared in Examples 1 to 3 and Comparative Examples 1 to 10 were measured by the following methods, and the results are shown in Tables 1 and 2 below.

* Izod impact strength (1/4 ", kgfcm / cm): Measured according to the ASTM D256 method.

* Heat deflection temperature (° C.): measured according to ASTM D648.

* MFR (melt index; g / 10 min): measured after 10 min residence at 2.16 kg load at 230 ° C. according to ASTM D1238.

* UL-94 (3mm): measured by performing the UL-94 test method, a standard method of evaluating flame retardancy divided into V-0, V-1 and V-2 grades by the vertical combustion test method with a specimen thickness of 3mm. If the grade did not pass, it was marked as Fail.

* Dripping: The dripping phenomenon was observed when the flame retardancy was measured and evaluated as the occurrence of dripping phenomenon.

○: dripping phenomenon occurs, X: dripping phenomenon does not occur

* Viscosity (cst): measured by ASTM D445 kinematic viscosity measurement at 25 ℃.

* Weight average molecular weight (g / mol): The sample was dissolved in THF (tetrahydrofuran) and measured using GPC.

division Example
One Example 2 Example
3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 ABS 30 30 30 30 30 30 30 SAN 70 70 70 70 70 70 70 AMSAN Epoxy Resin-1 10 15 25 Epoxy Resin-2 15 15 Epoxy Resin-3 15 Epoxy Resin-4 15 Phosphorus Flame Retardant 5 5 5 10 5 10 10 PDMS 4 4 4 4 4 4 4 PDMS low CaCO ₃ 2 2 2 2 2 2 2 Al ₂ O ₃ Na ₂ O ₃ 1/4 "Izod
Impact strength 18 17 14 16 19 9 8 HDT 83 81 74 74 82 80 82 MFR 60 80 90 92 84 79 73 3.0mm UL-94 V-1 V-1 V-1 V-1 Fail V-1 V-1 Dropping phenomenon X X X X X X X

division Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8 Comparative Example 9 Comparative Example 10 ABS 30 30 30 30 30 30 SAN 70 70 35 70 70 70 AMSAN 35 Epoxy Resin-1 5 15 15 15 15 15 Epoxy Resin-2 Epoxy Resin-3 5 Epoxy Resin-4 5 Phosphorus Flame Retardant 10 10 10 10 10 10 PDMS 4 4 4 PDMS low 4 CaCO ₃ 2 Al ₂ O ₃ 2 Na ₂ O ₃ 2 1/4 "Izod
Impact strength 8 8 9 9 5 6 HDT 80 72 75 72 74 76 MFR 92 60 34 80 55 54 3.0mm UL-94 V-1 V-2 V-2 Fail Fail Fail Dropping phenomenon X ○ ○ ○ X X

As shown in Tables 1 and 2, the thermoplastic resin compositions (Examples 1 to 3) of the present substrate had an effect of excellent flame retardancy while maintaining impact strength and heat resistance.

On the other hand, Comparative Example 1, in which the epoxy resin-1 was not included, had a low heat deformation temperature, and Comparative Example 2, which used a small amount of phosphorus flame retardant without containing the epoxy resin-1, had a low flame retardancy, and an epoxy resin. Comparative Examples 3 to 5, in which -3, epoxy resin-4 or a mixture thereof was used, had a significantly lower impact strength, and Comparative Examples 6 to 8 containing no silicone compound or low viscosity silicone compounds had impact strength. In addition, dropping occurred as the heat deformation temperature and flame retardancy decreased.

In addition, Comparative Examples 8 and 9, which contain Al ₂ CO ₃ or Na ₂ O ₃ instead of potassium carbonate, have a very poor impact strength, lower the thermal deformation temperature and melt index, and the flame retardancy does not pass the UL-94 standard. A dropping phenomenon occurred.

Claims (12)

(A) 100 parts by weight of the base resin consisting of 10 to 90% by weight of the vinyl cyan compound-conjugated diene-aromatic vinyl compound copolymer and 10 to 90% by weight of the aromatic vinyl compound-vinyl cyan compound copolymer;
(B) 6 to 30 parts by weight of the urethane phosphorus modified epoxy resin;
(C) 1 to 20 parts by weight of a phosphorus flame retardant;
(D) 1 to 10 parts by weight of the silicone compound; And
(E) 0.1 to 5 parts by weight of calcium carbonate; including,
(D) the silicone compound is characterized in that the polyalkylsiloxane
Thermoplastic resin composition.
The method of claim 1,
The (C) urethane phosphorus-modified epoxy resin is a resin comprising a repeating unit represented by the following formula (2) and a repeating unit represented by the formula (2); Or a resin comprising a repeating unit represented by the following Formula 1, a repeating unit represented by the following Formula 2, and a repeating unit represented by the following Formula 3;
Thermoplastic resin composition.

[Formula 1]

[Formula 2]

[Formula 3]

R ₁ , R ₂ and R ₃ are each independently hydrogen, alkyl having 1 to 20 carbon atoms, aryl having 6 to 24 carbon atoms, or alkylaryl having 7 to 30 carbon atoms.
X and Y are each independently unsubstituted carbon atoms of 1 to 20 carbon atoms or alkylene substituted with oxygen or nitrogen, unsubstituted carbon atoms of 6 to 24 or arylene substituted with oxygen or nitrogen, or unsubstituted carbon atoms of 7 to 30 Or arylalkylene substituted with oxygen or nitrogen.
N ₁ , n ₂ and n ₃ are each an integer of 1 to 100.
Z is an integer of 1 to 3.
The method of claim 1,
The (C) phosphorus flame retardant is selected from the group consisting of phosphate compounds, diphosphate compounds, polyphosphate compounds having three or more phosphate groups, phosphonate compounds, phosphinate compounds and diethylphosphinic acid metal compounds. At least one member, and the metal is at least one member selected from the group consisting of alkali metals, alkaline earth metals, zinc and aluminum.
Thermoplastic resin composition.
The method of claim 1,
The silicone compound (D) is characterized in that the viscosity is 100,000 cst or more
Thermoplastic resin composition.
delete The method of claim 1,
The calcium carbonate (E) is characterized in that the average particle diameter of 0.1 to 50 ㎛
Thermoplastic resin composition.
The method of claim 1,
The thermoplastic resin composition has an Izod impact strength (1/4 ”) of 10 to 40 kgf · cm / cm
Thermoplastic resin composition.
The method of claim 1,
The thermoplastic resin composition is characterized in that the heat distortion temperature (HDT) is 70 to 85 ℃.
Thermoplastic resin composition.
The method of claim 1,
The thermoplastic resin composition is characterized in that the 3.0mm UL-94 is V-0 or V-1
Thermoplastic resin composition.
The method of claim 1,
The thermoplastic resin composition further comprises at least one selected from the group consisting of a char forming agent, an impact modifier, a lubricant, an anti drip agent, an antioxidant, a sunscreen and a light stabilizer.
Thermoplastic resin composition.
(A) 100 parts by weight of the base resin consisting of 10 to 90% by weight of the vinyl cyan compound-conjugated diene-aromatic vinyl compound copolymer and 10 to 90% by weight of the aromatic vinyl compound-vinyl cyan copolymer compound; (B) 6 to 30 parts by weight of the urethane phosphorus modified epoxy resin; (C) 1 to 20 parts by weight of a phosphorus flame retardant; (D) 1 to 10 parts by weight of the silicone compound; And (E) 0.1 to 5 parts by weight of calcium carbonate; kneading and extruding at an barrel temperature of 180 to 250 ° C.
Method for producing a thermoplastic resin composition.
It is made from the thermoplastic resin composition according to any one of claims 1 to 4 and 6 to 10
Molded products.