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Special scratch-resistant talcum powder for polypropylene and preparation method thereof

A scratch-resistant, talc technology, applied in fibrous fillers, dyed low-molecular-weight organic compound treatment, dyed high-molecular-weight organic compound treatment, etc. The problems of peeling off the powder and high reaction conditions can achieve the effect of small investment, simple equipment and simple process.

Active Publication Date: 2011-07-20
LIAONING JINGHUA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the above method is modified, there are large investment, high reaction conditions or many reactants that need to participate, and the talcum powder cannot be effectively peeled off. It is not suitable for the scratch resistance performance requirements of polypropylene materials for automobiles.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Scratch-resistant talc powder for polypropylene, which is composed of the following components in parts by weight: 0.1 part of titanate coupling agent; 0.1 part of silane coupling agent; 97 parts of superfine talc powder; high molecular weight siloxane copolymer 0.5 servings.

[0017] The preparation method of scratch-resistant talc powder specially used for polypropylene comprises the following steps: put 97 parts of superfine talc powder with an average particle size of 1-50 μm into a high-speed mixer at a speed of 800 r / min and a temperature of 80 °C, and stir After preheating for 30 minutes, add 0.1 part of silane coupling agent KH-570 diluted with absolute ethanol by spraying three times through the high-pressure spray system, each time at an interval of 2 minutes, and mix for 15 minutes; increase the speed of the high-speed mixer to 1500r / min, and the temperature At 100 ℃, add 0.1 part of titanate coupling agent NDZ109 in two sprays through the high-pressure spray...

Embodiment 2

[0022] Scratch-resistant talc powder for polypropylene, which is composed of the following components in parts by weight: 0.5 parts of titanate coupling agent; 0.3 parts of silane coupling agent; 98 parts of superfine talc powder; high molecular weight siloxane copolymer 0.1 part.

[0023] The preparation method of scratch-resistant talc powder specially used for polypropylene comprises the following steps: put 98 parts of superfine talc powder with an average particle size of 1-50 μm into a high-speed mixer at a speed of 800 r / min at a temperature of 80 °C, and stir After preheating for 20 minutes, add 0.3 parts of silane coupling agent KH-550 diluted with absolute ethanol by spraying three times through the high-pressure spray system, each time at an interval of 2 minutes, and mix for 18 minutes; increase the speed of the high-speed mixer to 1500r / min, and the temperature At 100 ℃, add 0.1 part of titanate coupling agent OL-T951 in two sprays through the high-pressure spray ...

Embodiment 3

[0028] Scratch-resistant talc powder for polypropylene, which is composed of the following components in parts by weight: 0.3 parts of titanate coupling agent; 0.5 parts of silane coupling agent; 99 parts of ultrafine talc powder; high molecular weight siloxane copolymer 0.3 parts.

[0029] The preparation method of scratch-resistant talc powder specially used for polypropylene comprises the following steps: put 99 parts of superfine talc powder with an average particle size of 1-50 μm into a high-speed mixer at a speed of 800 r / min and a temperature of 80 °C, and stir After preheating for 20 minutes, add 0.5 parts of silane coupling agent KH-570 diluted with absolute ethanol by spraying three times through the high-pressure spray system, each time at an interval of 2 minutes, and mix for 20 minutes; increase the speed of the high-speed mixer to 1500r / min, and the temperature At 100 ℃, add 0.3 parts of titanate coupling agent NDZ109 in two sprays through the high-pressure spra...

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Abstract

The invention relates totalcum powder and preparation method thereof, in particular to special scratch-resistant talcum powder for polypropylene and a preparation method thereof. The talcum powder comprises the following components in parts by weight: 0.1-0.5 part of titanate coupling agent, 0.1-0.5 part of silane coupling agent, 97-99 parts of superfine talcum powder and 0.1-0.5 part of high molecular weight siloxane copolymer. The invention has the following advantages and effects: the activation rate of the talcum powder provided by the invention is more than 99.0%, the oil adsorption value is less than 1.5mL / 100g, the product purity is high and the particle size is 1-50mu m. Through the inspections of the professional inspection institution, the scratch resistance of the polypropylene car bumper special material prepared from the talcum powder which is provided the invention satisfies the grade A of the multi-finger scratch test and the Delta L in the Erichsen cross test is less than 1.5.

Description

technical field [0001] The invention relates to a talc powder and a preparation method thereof, in particular to a scratch-resistant talc powder special for polypropylene and a preparation method thereof. Background technique [0002] Polypropylene (PP) has been widely used in automotive parts such as bumpers, anti-scratch trims, door inner pillars and door guards, but the surface of PP has poor scratch resistance. At present, some world-class automobile manufacturers have begun to require that the surface of the component can still show excellent scratch resistance under the condition of a certain scratch force. Talc powder filling polypropylene is undoubtedly one of the most effective ways to obtain scratch resistance. However, when talc powder with high surface energy is combined with polypropylene with low surface energy, there are poor compatibility and interface adhesion, and easy self-agglomeration. question. At present, the silane-based anti-scratch additives commo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K9/06C08K9/04C08K3/34C08G77/445C08G63/695C09C1/28C09C3/12C09C3/10C09C3/08
Inventor 张爱玲杨文军王松杨雪那贵洲
Owner LIAONING JINGHUA NEW MATERIAL CO LTD
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