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PBT-PC alloy material with impact resistance at low temperature and preparation method thereof

An alloy material and impact-resistant technology, which is applied in the field of low-temperature impact-resistant PBT and PC alloy materials and their preparation, can solve the problems of high crystallization speed, poor mechanical properties, and easy warping.

Inactive Publication Date: 2018-07-27
福建华塑新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, pure PC products have defects such as notch sensitivity and stress cracking, while pure PBT products have good stress crack resistance, but they have the disadvantages of poor mechanical properties, fast crystallization speed and easy warping, especially in low temperature environments. It will greatly reduce the service life of the product, so it needs to be improved

Method used

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  • PBT-PC alloy material with impact resistance at low temperature and preparation method thereof
  • PBT-PC alloy material with impact resistance at low temperature and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A low-temperature impact-resistant PBT and PC alloy material, in parts by weight, the raw material formula is: 50-80 parts of PC resin, 20-40 parts of PBT resin, 2 parts of compatibility modifier, 4 parts of titanium dioxide, nucleating 0.9 parts of agent, 0.6 parts of transesterification inhibitor, 4 parts of toughening agent, 0.5 parts of antioxidant, and 0.8 parts of weathering agent.

[0022] A preparation method of low-temperature impact-resistant PBT and PC alloy material, comprising the following steps:

[0023] 1) Add PC resin and PBT resin to engineering plastics grinder for crushing, pass through 200-mesh sieve, and set aside;

[0024] 2) Add PC resin, toughener and antioxidant to the polymer material mixer at the same time, and carry out three-stage mixing and stirring at the speed of 400-600r / min to obtain No. 1 material; the first stage of mixing The temperature is 53°C, the mixing time is 10min, the mixing temperature of the second stage is 77°C, the mixi...

Embodiment 2

[0031] A kind of low-temperature impact-resistant PBT and PC alloy material and preparation method thereof as described in embodiment 1, can also adopt following technology:

[0032] The raw material formula is: 50-80 parts of PC resin, 20-40 parts of PBT resin, 4 parts of compatibility modifier, 3 parts of titanium dioxide, 0.6 part of nucleating agent, 0.9 part of transesterification inhibitor, toughening agent 8 parts, 0.8 parts of antioxidant, 0.4 parts of weathering agent.

[0033] In step 2), the mixing temperature of the first section is 47°C and the mixing time is 10 minutes; the mixing temperature of the second section is 63°C and the mixing time is 10 minutes; the mixing temperature of the third section is 64°C and the mixing time is for 20min.

[0034] In step 3), the mixing temperature of the first section is 45°C, and the mixing time is 10min; the mixing temperature of the second section is 61°C, and the mixing time is 15in; the mixing temperature of the third se...

Embodiment 3

[0038] A kind of low-temperature impact-resistant PBT and PC alloy material and preparation method thereof as described in embodiment 1, can also adopt following technology:

[0039] The raw material formula is: 50-80 parts of PC resin, 20-40 parts of PBT resin, 5 parts of compatibility modifier, 2 parts of titanium dioxide, 1.2 parts of nucleating agent, 0.3 parts of transesterification inhibitor, toughening agent 10 parts, 0.1 part of antioxidant, 1 part of weather resistance agent

[0040] In step 2), the mixing temperature of the first section is 42°C, and the mixing time is 10 minutes; the mixing temperature of the second section is 81°C, and the mixing time is 10 minutes; the mixing temperature of the third section is 62-70°C, The mixing time was 20 minutes.

[0041] In step 3), the mixing temperature of the first section is 50°C, and the mixing time is 10min; the mixing temperature of the second section is 40°C, and the mixing time is 15in; the mixing temperature of th...

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Abstract

The invention provides a PBT-PC alloy material with impact resistance at low temperature and a preparation method thereof. According to the invention, auxiliary agents like titanium dioxide and an ester exchange inhibitor are used as the components of the PBT-PC alloy material, and the proportion of each component of the PBT-PC alloy material is strictly controlled; and during preparation, a material I and a material II are respectively prepared from a variety of components and PC resin and from a variety of components and PVC resin, then a compatible modifier, titanium dioxide and the ester exchange inhibitor are added into the material I and the material II, and the technological parameters like mixing temperature and extrusion temperature of each procedure are strictly controlled, so afull reaction of the components is ensured, a mixing degree is increased, the effect of synergistic interaction is achieved, and product performance is greatly enhanced. Testing results prove that theprepared alloy material presents excellent mechanical properties, especially shock resistance, has excellent performance in a low-temperature environment and shows excellent impact resistance and tensile strength after usage for 1008 h.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a low-temperature impact-resistant PBT and PC alloy material and a preparation method thereof. Background technique [0002] At present, pure PC products have defects such as notch sensitivity and stress cracking, while pure PBT products have good stress crack resistance, but they have the disadvantages of poor mechanical properties, fast crystallization speed and easy warping, especially in low temperature environments. Under the circumstances, the service life of the product will be greatly reduced, so it needs to be improved. Contents of the invention [0003] In order to overcome the above problems, the present invention provides a low-temperature impact-resistant PBT and PC alloy material and a preparation method thereof. [0004] To achieve the above object, the technical solution provided by the invention is: [0005] A low-temperature impact-resistant PBT and PC alloy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/02C08K3/22
CPCC08K2003/2241C08L69/00C08L67/02C08K3/22
Inventor 蔡鹏飞林建民
Owner 福建华塑新材料有限公司