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High-opacity spraying-free PP material and preparation method thereof

A spray-free, high shading technology, applied in the field of spray-free materials, can solve the problem of inability to know the shading effect, achieve good dispersion and material shading, improve shading, and relieve flow marks.

Active Publication Date: 2018-11-30
上海日之升科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN108047627A discloses "a non-spraying polypropylene composite material with scratch resistance and metallic silver texture and its preparation method", which adds polysiloxane and amide compounds to improve the scratch resistance of PP, through Flat glass fiber is loaded with aluminum silver powder to improve the isotropic arrangement of aluminum silver powder to improve the appearance of flow marks and weld lines, but its shading effect is unknown
In the prior art, there is no report about a kind of shading and spray-free PP material of the present invention and its preparation method.

Method used

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  • High-opacity spraying-free PP material and preparation method thereof
  • High-opacity spraying-free PP material and preparation method thereof
  • High-opacity spraying-free PP material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Example 1 Preparation of high shading and spray-free PP material (1)

[0030] For the high shading and spray-free PP material composition involved in this embodiment, the components and their amounts are shown in Table 1 and Table 2. Among them: the PP is a homopolymer PP, its melting index is 15g / 10min (230℃*2.16kg), the shading filler is a 3:1 mixture of silica and rutile titanium dioxide, and the silica mesh number is 3000 Mesh; in the spray-free pigment masterbatch, the matrix resin is homopolymer PP, and the melting index is 25g / 10min (230℃*2.16kg); the spray-free pigment powder is aluminum silver powder with a particle size of 10μm; dispersant I is silicone Masterbatch and stearic acid amide are compounded according to the weight ratio of 1:2. The agglomerate particle size D50 of silicone masterbatch is 500-600nm; the sizing agent is silane coupling agent KH550; dispersant Ⅱ is stearic acid amide ; Antioxidant is a compound of hindered phenolic antioxidant and phosp...

Embodiment 2

[0033] Example 2 Preparation of high shading and spray-free PP material (2)

[0034] For the high shading and spray-free PP material composition involved in this embodiment, the components and their amounts are shown in Table 1 and Table 2. Among them: the PP is a homopolymer PP, its melting index is 15g / 10min (230℃*2.16kg), the shading filler is a 3:1 mixture of silica and rutile titanium dioxide, and the silica mesh number is 3000 Mesh; in the spray-free pigment masterbatch, the matrix resin is homopolymer PP, and the melting index is 25g / 10min (230℃*2.16kg); the spray-free pigment powder is aluminum silver powder with a particle size of 10μm; dispersant I is silicone Masterbatch and stearic acid amide are compounded according to the weight ratio of 1:2. The agglomerate particle size D50 of silicone masterbatch is 500-600nm; the sizing agent is silane coupling agent KH550; dispersant Ⅱ is stearic acid amide ; Antioxidant is a compound of hindered phenolic antioxidant and phos...

Embodiment 3

[0037] Example 3 Preparation of high shading and spray-free PP material (3)

[0038] For the high shading and spray-free PP material composition involved in this embodiment, the components and their amounts are shown in Table 1 and Table 2. Among them: the PP is a homopolymer PP, its melting index is 15g / 10min (230℃*2.16kg), the shading filler is a 3:1 mixture of silica and rutile titanium dioxide, and the silica mesh number is 3000 Mesh; in the spray-free pigment masterbatch, the matrix resin is homopolymer PP, and the melting index is 25g / 10min (230℃*2.16kg); the spray-free pigment powder is aluminum silver powder with a particle size of 10μm; dispersant I is silicone Masterbatch and stearic acid amide are compounded according to the weight ratio of 1:2. The agglomerate particle size D50 of silicone masterbatch is 500-600nm; the sizing agent is silane coupling agent KH550; dispersant Ⅱ is stearic acid amide ; Antioxidant is a compound of hindered phenolic antioxidant and phos...

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Abstract

The invention discloses a high-opacity spraying-free polypropylene (PP) material and a preparation method thereof. The high-opacity spraying-free PP material consists of the following components in parts by weight: 100 parts of PP, 12-20 parts of opacity filler, 5-15 parts of spraying-free pigment master batches and 0.5-3 parts of a dispersing agent, 0.5-1 part of a sizing agent and 0.2-0.5 part of an antioxidant. The PP, the opacity filler, the spraying-free pigment master batches, the dispersing agent and the sizing agent are added into a high mixing machine; mixing is carried out for 5-8 minutes at a rate of 280-360 r / min, so that a pre-mixed material is formed; the pre-mixed material is placed in a main feeding port of a double-screw extruder; and extruding granulation is carried out.The prepared material provided by the invention has an excellent spraying-free effect, the problem of flow marks of conventional spraying-free metal-effect materials can be effectively relieved through the characteristic of good dispersity and material opacity of spraying-free-effect powder, and the PP material provided by the invention is suitable for occasions with relatively high opacity requirements, and has a wide application in the field of LED illumination.

Description

Technical field [0001] The invention relates to the technical field of spray-free materials, in particular to a high shading and spray-free PP material and a preparation method thereof. Background technique [0002] LED (Light Emitting Diode), or light emitting diode, is a solid-state semiconductor device that can directly convert electricity into light. Its small size, low power consumption, high brightness, low heat, sturdiness and durability, and environmental protection. These inherent characteristics determine that it is the most ideal light source to replace traditional light sources. It has a wide range of uses and can be used as a display light source for display screens and traffic signals , Life lighting, industrial lighting. The wide application of LED lights also puts forward higher requirements for its accessories and materials. For example, the high brightness of the LED light source has higher requirements for the shading, dimensional stability and surface flatne...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L83/04C08K13/02C08K5/20C08K3/34C08K3/22C08J3/22
CPCC08J3/223C08J3/226C08J2323/12C08J2423/12C08K2003/2241C08K2201/011C08L23/12C08L2203/20C08L2205/025C08L2205/03C08L83/04C08K13/02C08K5/20C08K3/34C08K3/22
Inventor 陈光伟张强娄小安徐东东孟成铭
Owner 上海日之升科技有限公司
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