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A kind of PC resin with high transparency and high haze and its application

A high-transparency, high-haze technology, applied in the field of PC resin, can solve the problems of transparency, increase haze, etc., and achieve the effect of improving thermal stability and improving thermal stability.

Inactive Publication Date: 2015-10-28
GUANGDONG TIANBAO NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the PC materials disclosed in the prior art, increasing the haze will have a great impact on the transparency of the PC. Aiming at the deficiencies in the prior art, the present invention is specially proposed

Method used

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  • A kind of PC resin with high transparency and high haze and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0040] Prepare PC resin with high transparency and high haze according to the ratio in Table 1, the unit is kg:

[0041] Table 1:

[0042]

[0043] Among them: D95 particle size of anhydrous gypsum is 2 μm, whiteness ≥ 92%, purity ≥ 99%, refractive index 1.57-1.59; molecular weight of KMP590 is 1.3 million-1.5 million, D95 particle size 3 μm, refractive index 1.55-1.58; PC resin The MFR value is 10g / 10min.

[0044] The preparation method is:

[0045] (1) Dry the PC resin at a temperature of 90°C for 3 hours;

[0046] (2) Weigh the high-purity anhydrous gypsum powder in proportion, mix the silicone resin powder, antioxidant, and PC resin in a high-speed mixer for 5 minutes, and the speed of the high-speed mixer is 8000 rpm, and put it in a parallel twin-screw extruder. The extruder is extruded; the temperature of the feeding section of the extruder is 180-200°C, the temperature of the mixing section is 230-250°C, the temperature of the head is 200-220°C, and the sp...

Embodiment 5～6

[0053] Prepare PC resin with high transparency and high haze according to the ratio in Table 3, the unit is kg; the preparation method is the same as in Example 1.

[0054] table 3:

[0055]

[0056] Example 6'

[0057] Among them: the D95 particle size of anhydrous gypsum is 3 μm, the whiteness is ≥92%, the purity is ≥99%, and the refractive index is 1.57-1.59;

[0058] The molecular weight of KMP590 is 1.3 million to 1.5 million, the D95 particle size is 3 μm, and the refractive index is 1.55 to 1.58;

[0059] The MFR value of PC resin is 8g / 10min.

[0060] Preparation:

[0061] (1) Dry the PC resin at a temperature of 85°C for 4 hours;

[0062] (2) Weigh the high-purity anhydrous gypsum powder in proportion, mix the silicone resin powder, antioxidant, and PC resin in a high-speed mixer for 8 minutes, and the speed of the high-speed mixer is 5000 rpm, and put it in a parallel twin-screw extruder. The extruder is extruded; the temperature of the feed...

Embodiment 7

[0067] Example 7: Preparation of blisters for LED lamps

[0068] The formula and raw materials are:

[0069] Anhydrous gypsum powder: 0.8kg (D95 particle size 2μm, whiteness ≥ 92%, purity ≥ 99%, refractive index 1.57-1.59)

[0070] The silicone resin powder is KMP590: 0.4kg (molecular weight 1.3 million to 1.5 million, D95 particle size 2μm, refractive index 1.55 to 1.58);

[0071] Antioxidant is BASF B900: 0.5kg;

[0072] PC resin 98.3kg (MFR: 8g / 10min)

[0073] Using the preparation method of Example 1, a modified PC resin was prepared, and its MFR ≤ 10g / min. The resin was processed into a 1.5mm-thick LED lamp blister by an injection blowing process, and its light transmittance was measured to be 94%. The haze is 96%, and the diffusion angle is 243°.

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Abstract

The invention relates to a PC (polycarbonate) resin, in particular to a high-transparency and high-haze PC resin and the application thereof. The high-transparency and high-haze PC resin provided by the invention comprises 0.1 to 0.8 wt percent of anhydrous gypsum powder, 0.1 to 0.5 wt percent of organosilicon resin powder, 0.1 to 0.5 wt percent of antioxygen, and PC resin in balancing amount. In the invention, two photodiffusion materials are selected for use, the haze of the PC resin is further improved, and the haze of a sample with the thickness of 2 mm reaches more than 96 percent. The invention further relates to the preparation method of the PC resin and the application of the PC resin on aspect of preparing LED energy-saving lamp shade material.

Description

technical field [0001] The invention relates to PC resin, in particular to a PC resin with high transparency and high haze and its application. Background technique [0002] Polycarbonate (PC) resin is a thermoplastic engineering plastic with excellent performance. It has outstanding impact resistance, good creep resistance and dimensional stability, heat resistance, low water absorption, non-toxicity, and excellent dielectric properties. It is the only product with good transparency among engineering plastics, and it is also the general-purpose engineering plastic with the fastest growth rate in recent years. Because it has a relatively comprehensive and balanced performance - excellent impact resistance, heat resistance, dimensional stability, transparency and self-extinguishing properties, etc., it can be widely used in electrical, electronic, precision machinery, automotive, security, medical and other fields. engineering plastics used. [0003] The refractive index of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L83/04C08K3/30
Inventor 何顺伦
Owner GUANGDONG TIANBAO NEW MATERIALS CO LTD