Process for preparing nano-SiO2/PET engineering plastic product

A technology of engineering plastics and production methods, applied in the direction of coating, etc., can solve problems that have not been reported before, and achieve the effects of wide application range, good quality of finished products, and simple process

Inactive Publication Date: 2008-09-24
常州钟楼经济开发区北新投资建设有限公司
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AI-Extracted Technical Summary

Problems solved by technology

However, according to the retrieval of the Science and Technology Novelty Search Workstation of the Ministry of Education...
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Method used

(3) modified treatment. The compound material prepared in the second step is put into a screw extruder to granulate, and the temperature of each zone of the screw barrel is controlled within the range of 240°C to 280°C. Nano-SiO2/PET composite modified material particles.
(4) modified treatment. The compound material prepared in the third step is put into a screw extruder, and the temperature of each zone of the screw barrel is controlled within the range of 240 ° C to 280 ° C. After ext...
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Abstract

The invention discloses a production method of a nano SiO2/PET engineering plastic product; nano SiO2/PET composite material slices are taken as the raw materials and a general injection/extrusion process is adopted, so as to first dry the raw materials before injection/extrusion, so that the water content of less than or equal to 40ppm is regarded as the main characteristic. By adding in an appropriate amount of flame retardant, alkali-free glass fiber and special nucleating agent are modified, so that the produced engineering plastic product has higher physical performance and process performance, is more applicable in producing all types of engineering plastic products. The production method is characterized by easy process, quick knockout, good quality of finished products, wide scope of application, applicable in mass industrialized production, etc.

Application Domain

Coatings

Technology Topic

Nano sio2Water content +7

Image

  • Process for preparing nano-SiO2/PET engineering plastic product
  • Process for preparing nano-SiO2/PET engineering plastic product
  • Process for preparing nano-SiO2/PET engineering plastic product

Examples

  • Experimental program(6)

Example Embodiment

[0021] Example 1, as shown in Figure 1. Preparation of nano-SiO 2 /PET engineering plastic products, such as plastic mechanical parts. The production steps are:
[0022] (1) Raw material nano SiO 2 /PET composite material drying treatment. The raw materials are placed in a hot air drying box, dried at a temperature of 150° C. for 5 hours, and the moisture content is detected to reach ≤ 40 ppm, and the raw materials are taken out of the box for use.
[0023] (2) Molding. The dried nano SiO 2 /PET composite material, put into screw injection molding machine, adopt the usual PET injection molding process to prepare nano-SiO 2 /PET engineering plastic products.

Example

[0024] Implementation 2, as shown in Figure 1. Preparation of nano-SiO 2 /PET plastic rods or plates. The production steps are as follows: Except for the screw extruder, the others are the same as in Example 1.

Example

[0025] Implementation 3, refer to Figure 2. Preparation of flame-retardant nano SiO 2 /PET engineering plastic products. The production steps are:
[0026] (1) Raw material nano SiO 2 /ET composite material drying treatment. The raw materials are placed in a vacuum drying box, dried at a temperature of 135°C for 6 hours, and the moisture content is detected to be ≤40 pmm, and the raw materials are taken out of the box for use.
[0027] (2) Preparation of flame retardant. 3 parts by weight of decabromodiphenyl ether and 1 part by weight of antimony trioxide are compounded into a compound flame retardant.
[0028] (3) Prepare compound materials. The dried nano SiO prepared in the first step 2 /PET composite material, and the compound flame retardant prepared in the second step, repeat the compounding according to the ratio of 100:5 parts by weight, and stir the compound material into a compound material; then put the compound material into the oven at 90 Dry for 2 hours at ℃, and then leave the box for later use.
[0029] (4) Modification treatment. The compound material prepared in the third step is put into a screw extruder for granulation. The temperature of each zone of the screw barrel is controlled within the range of 240℃~280℃. After extrusion, it is pelletized to obtain a nanometer with enhanced flame retardancy. SiO 2 /PET composite material modified material particles.
[0030](5) Drying treatment of modified material particles. The modified material particles prepared in the fourth step are placed in an oven, and dried at a temperature of 110°C to 120°C for 3 to 4 hours.
[0031] (6) Molding. Put the dried modified material particles prepared in the fifth step into a screw injection molding machine, and use the usual PET injection molding process to prepare flame-retardant nano SiO 2 /PET engineering plastic products.

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