Unlock instant, AI-driven research and patent intelligence for your innovation.

Flame-retardant toughened polypropylene loudspeaker box material

A polypropylene and speaker technology, applied in the direction of sound-producing equipment, instruments, etc., can solve the problems of non-corrosion, strong corrosiveness, secondary pollution, etc., and achieve the effects of increasing overall strength, low toxicity, and increased carbon residue.

Inactive Publication Date: 2015-06-03
NINGBO YINZHOU YONGXING ELECTRONICS
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The early polypropylene materials used the addition of halogen elements for flame retardancy, but the halogen elements produced a large amount of toxic and harmful gases during combustion, causing serious "secondary pollution". Therefore, as early as 2003, the European Union banned some bromine The use of flame retardants
Another kind of flame retardant is intumescent flame retardant, such as phosphorus oxychloride, phosphorus pentoxide, etc., which are used as synthetic raw materials, but they are highly corrosive and not easy to corrode.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Flame-retardant toughened polypropylene loudspeaker box material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Weigh raw materials: 100 parts of polypropylene, 0.5 parts of C60 (such as fullerene C60 produced by Suzhou Hengqiu Graphene Technology Co., Ltd.), 25 parts of the compound of nano-dihydroxy compound metal oxide and ammonium polyphosphate (APP) , 2 parts of maleic anhydride grafted polypropylene copolymer, 2 parts of nano silicon carbide, 5 parts of talcum powder.

[0016] Among them, the nano-dihydroxy compound metal oxide is LDH1 (Mg 8 Al 2 (OH) 20 CO 3 ·7H 2 O), its particle diameter is 50nm, and the weight ratio of nano double hydroxyl compound metal oxide and ammonium polyphosphate is 1:5.

[0017] The specific preparation steps are: (1) weighing each raw material according to the formula ratio, adding the raw materials to a high-speed mixer for pre-mixing for 8 minutes, the speed of the high-speed mixer is 400r / min, and the mixing temperature is 60-65°C; (2 ) Put the mixed raw materials into the twin-screw extruder. The temperature of the feeding zone of the ...

Embodiment 2

[0019] Weigh raw materials: 100 parts of polypropylene, 1 part of C601, 30 parts of compound of nano-dihydroxy compound metal oxide and ammonium polyphosphate (APP), 5 parts of maleic anhydride grafted polypropylene copolymer, 3 parts of nano-silicon carbide , 8 parts of talcum powder;

[0020] Among them, the nano-dihydroxy compound metal oxide is LDH2 (Mg 8 Al 2 (OH) 20 CO 3 ·7H 2 O), its particle diameter is 50nm, and the weight proportion of nano-dihydroxy compound metal oxide and ammonium polyphosphate is 1:10.

[0021] The preparation steps are the same as in Example 1.

Embodiment 3

[0023] Weigh raw materials: 100 parts of polypropylene, 2 parts of C602, 35 parts of compound of nano-dihydroxy compound metal oxide and ammonium polyphosphate (APP), 6 parts of maleic anhydride grafted polypropylene copolymer, 4 parts of nano-silicon carbide , 8 parts of talcum powder;

[0024] Among them, the nano-dihydroxy compound metal oxide is LDH2 (Mg 8 Al 2 (OH) 20 CO 3 ·7H 2 O), its particle diameter is 50nm, and the weight ratio of nano double hydroxyl compound metal oxide and ammonium polyphosphate is 1:12.

[0025] The preparation steps are the same as in Example 1.

[0026] Table 1. Relevant properties of each embodiment

[0027]

[0028] Intuitive experiment: Take the material to make a plate with a thickness of 2cm, take the cross-section of the plate, use a 2.5kg iron ball to fall freely from a height of 80cm from the cross-section of the plate, and hit the cross-section without deformation or rupture; but 1cm*1cm The small pieces of material can be a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a flame-retardant toughened polypropylene loudspeaker box material which is characterized by comprising the following raw materials in parts by weight: 100 parts of polypropylene, 0.5-2 parts of C60, 20-40 parts of a compound of a nano di-hydroxyl compound metal oxide and ammonium polyphosphate, 1-6 parts of maleic anhydride grafted polypropylene, 1-5 parts of nano silicon carbide, and 1-10 parts of talcum powder. The material provided by the invention has the advantages of good flame retardant property, high toughness and high strength.

Description

technical field [0001] The invention relates to the technical field of polypropylene flame-retardant materials, in particular to a flame-retardant and toughened polypropylene sound box material. Background technique [0002] Polypropylene is a light weight, non-toxic, easy to process, excellent mechanical properties, and chemical corrosion resistance; therefore, it is widely used in various fields of life; especially with the continuous improvement of technology, many large speakers Polypropylene is often used as the basic material in the production of speakers; however, speakers are often used in boxes, large-scale singing and dancing parties, etc., where there are many audiences, so the flame retardancy is particularly important. [0003] The early polypropylene materials used the addition of halogen elements for flame retardancy, but the halogen elements produced a large amount of toxic and harmful gases during combustion, causing serious "secondary pollution". Therefore,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L23/12C08L51/06C08K3/00C08K3/32C08K3/26C08K3/34C08K3/04G10K11/162B29C47/92B29C48/92
CPCC08L23/12B29C48/92B29C2948/9259B29C2948/92704C08K2201/003C08K2201/011C08K2201/014C08L2201/02C08L2201/08C08L2201/22G10K11/162C08L51/06C08K3/00C08K3/045C08K2003/323C08K3/34C08K3/26
Inventor 王佩君
Owner NINGBO YINZHOU YONGXING ELECTRONICS