High impact and high gloss spray-free pp/petg alloy material and preparation method thereof

An alloy material and high gloss technology, which is applied in the field of high impact and high gloss spray-free PP/PETG alloy materials and their preparation, can solve the problems of no high-gloss spray-free effect, reduced PP impact resistance, no spray-free and other problems. , to achieve excellent low temperature resistance and surface gloss, slow down flow marks, improve the effect of dispersion

CN107973976BActive Publication Date: 2020-08-25上海日之升科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-08-25

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Abstract

The invention provides a high impact-resisting high gloss spraying-free PP / PETG alloy material and a preparation method thereof. The high impact-resisting high gloss spraying-free PP / PETG alloy material comprises the following components in parts by weight: 100 parts of PP, 5-20 parts of PETG, 3-8 parts of compatilizer, 2-10 parts of metal powder pigment masterbatch, 0.3-0.6 part of dispersant, and 0.2-0.5 part of antioxidant. The preparation method comprises the following steps: putting the components into a high-speed mixing machine to mix for 5-10 minutes, and putting a mixed pre-material into a main feeding port of a twin-screw extruder for extruding granulation. The prepared material has the advantages of excellent spraying-free metal effect, good impact resistance and high surface glossiness, so that the flow mark problem of traditional spraying-free metal effect materials can be effectively alleviated, and the material is suitable for occasions with high impact performance requirements, and has wide applications in the fields of automobiles, home appliances, and the likes.
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Description

technical field

[0001] The invention relates to the field of spray-free materials, in particular to a high-impact, high-gloss spray-free PP / PETG alloy material and a preparation method thereof. Background technique

[0002] Polypropylene (PP) is a non-toxic, odorless and highly crystalline polymer with a regular structure and a density of only 0.91g / cm 3 , is one of the lightest engineering plastics, widely used in automobiles, home appliances and other fields. Due to the high surface gloss and good processability of polypropylene materials, polypropylene is gradually applied to the field of spray-free materials. However, due to the influence of the molecular structure of PP materials, PP materials have poor low-temperature impact resistance and are easy to age. The surface gloss is lower than that of ABS, PMMA, and PC materials, which will limit the application of PP in the field of spray-free materials.

[0003] Polyethylene terephthalate-1,4-cyclohexanedimethanol (PETG)...

Examples

Embodiment 1～3

[0035] Examples 1 to 3 relate to high-impact, high-gloss and spray-free PP / PETG alloy material compositions, and the components and amounts thereof are shown in Table 1. in:

[0036] PP is homopolymerized PP, the melt index is 8g / 10min;

[0037] PETG is polyethylene terephthalate-1,4-cyclohexanedimethanol, and the content of 1,4-cyclohexanedimethanol is 32%;

[0038] The compatibilizer is POE-g-GMA, wherein the grafting rate of glycidyl methacrylate is 2%;

[0039] In the metal pigment masterbatch, the matrix resin is homopolymerized PP; the metal powder is aluminum silver powder with a particle size of 20 μm; the first dispersant is Tegomer P121; the sizing agent is silane coupling agent KH550;

[0040] The second dispersant is polyethylene wax;

[0041] The antioxidant is a compound of hindered phenolic antioxidant and phosphite antioxidant, and the mass ratio of the two is 1:1.

[0042] During preparation, each raw material is weighed according to the parts by weight in...

Embodiment 4～7

[0058] Examples 4-7 relate to high-impact, high-gloss and spray-free PP / PETG alloy material compositions, and the components and amounts thereof are shown in Table 4. in:

[0059] The PP of embodiment 4~6 selects homopolymer PP for use, melt index 20g / 10min;

Embodiment 7

[0060] The PP of embodiment 7 selects copolymerized PP, melt index 15g / 10min;

[0061] The content of 1,4-cyclohexanedimethanol ester in the PETG of Examples 4-6 is 38%;

[0062] 1,4-cyclohexanedimethanol ester content is 35% in the PETG of embodiment 7;

[0063] The compatibilizer of Examples 4-7 is POE-g-GMA, wherein the grafting rate of glycidyl methacrylate is 2%;

[0064] In the metal pigment masterbatches of Examples 4-6, the matrix resin is homopolymerized PP; the metal powder is aluminum silver powder with a particle size of 70 μm; the first dispersant is Tegomer P121; the sizing agent is silane coupling agent white oil ;

[0065] In the metal pigment masterbatch of Example 7, the matrix resin is homopolymerized PP; the metal powder is selected from copper gold powder, and its particle size is 50 μm; the first dispersant is Tegomer P121; the sizing agent is silane coupling agent white oil;

[0066] The dispersant of embodiment 4~7 is polyethylene wax;

[0067] The ...