Halogen-free anti-flaming polycarbonate/thermoplastic polyester resin composition

A technology of flame-retardant polycarbonate and thermoplastic polyester, which is applied in the field of halogen-free flame-retardant thermoplastic compositions, can solve the problems of poor mechanical properties, slow crystallization speed, and difficult demoulding of molded products, and achieve excellent mechanical properties and resistance Flammability, good chemical corrosion resistance, and environmental protection effect

Inactive Publication Date: 2008-01-16
SHANGHAI PRET COMPOSITES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the slow crystallization rate and coarse spherulites of unmodified PET commercial resins during injection molding, the molded products have poor mechanical properties and low impact strength; Unbalanced and unstable properties of the parts lead to warping, shrinkage, and difficulty in demoulding of the parts. These characteristics make it difficult for unmodified pure PET resins to be commercially used for injection molding products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 4~7

[0043] Using the same processing technology and test method as in Example 1-3, but using different contents of PC and PET resins, different contents of talcum powder and different contents of phosphate ester flame retardants, the halogen-free Flame-retardant PC / PET resin composition, performance test is shown in table 2.

[0044] Table 2: Composition and performance of halogen-free flame retardant PC / PET

[0045] composition

Example 4

Example 5

Example 6

Example 7

PC

50

50

70

85

PET1

5

25

8

PET2

6

MBS graft copolymer

15

10

5

3

RDP

12

15

7

6

Talc powder

18

0

10

0

PTFE

0.5

0.5

0.5

0.5

619F

0.2

0.2

0.2

0.2

The test results are as follows:

Tensile stre...

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PUM

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Abstract

The invention discloses a halogen-free flame retardant polycarbonate/thermoplastic polyester resin composition, whose components and proportions are as follow: polycarbonate 50 percent to 85 percent, thermoplastic polyethylene terephthalate resin 5 percent to 30 percent, core-shell graft coplolymer 2 percent to 15 percent, phosphorus-containing flame retardant 5 percent to 15 percent, super fine talc powder 0 to 20 percent and phosphite antioxidant 0 to 0.05 percent, the above contents are all in weight percentage. The product of the invention has the advantages that no large amount of harmful gas is released when the product is burned with environmental protection and safety.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant thermoplastic composition prepared from polycarbonate and thermoplastic polyester resin, which belongs to the production method of the halogen-free flame-retardant thermoplastic composition. technical background [0002] Bisphenol A polycarbonate (PC) is an engineering plastic with excellent comprehensive properties. It has high rigidity and elastic modulus, good thermal stability, and stable product size; in a wide temperature range, its impact strength is higher than other engineering plastics. However, its high melt viscosity, difficult processing, large internal stress of the product, and poor resistance to solvent erosion limit its application. [0003] On the other hand, thermoplastic polyethylene terephthalate (PET) has many well-known excellent physical properties in its crystalline state, such as high tensile strength, good chemical resistance, and good thermal stability. However, due t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K5/524C08L67/03C08L51/00C08K3/34
Inventor 朱江磊陈永东张祥福周文
Owner SHANGHAI PRET COMPOSITES
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