尋求生產同軸線的物性發泡材料?

謝謝這位大俠!

您所提供的是HDPE及LDPE,請教一下:

這兩种材料的配比是多少?

需要成核劑嗎?

還是EVA?

煩請幫忙!

謝謝!

有沒有什麼低成本的材料?

但性能能適用於同軸線;

有誰用過大慶華科+發泡劑生產物理發泡呀?

可行嗎?

理发泡绝缘料HD1029

     HD1029是一种应用于通信电缆、同轴电缆、信号电缆绝缘层挤包的物理发泡专用树脂。

    HD1029净化度高，灰分含量低使该材料具有优异的电气性能；HD、LD、LLD多元复合使该材料同时具备良好的机械物理性能和较高的熔体强度；匀称的晶格结构使成型物泡孔更臻细密；可以任意调节的配比浓度；无粉尘飞扬之害；有分散均匀之利。

HD1029典型工艺条件如下：

    上表所列仅供参考，实际加工温度的分布用户应根据挤出机本身的技术参数具体设计，通过平缓的调整和实际操作来建立。

为防止泡孔在挤出机中增大，在熔融段应保持适当压力，若压力不够，将出现大的气隙和孔洞。筛网选择，模芯、模套的配合都是影响熔融压力的要素。

电话：025-86210169

传真：025-86210734            

［hdkj 在 2011-2-28 10:34:46 编辑过］

［hdkj 在 2011-2-28 10:59:21 编辑过］

北欧化工的HE4873，适用于生产3mm以下的同轴电缆，无需添加任何的成核剂，直接使用，有需要的话可以与我联系

Polyolefins

Borcell™ HE4873

HD Polyethylene Compound for Gas Injection of Cellular Data Cable Insulation

Description

Borcell™ HE4873 is a high-density polyethylene containing blowing agent for the production of foam or

foam-skin insulation. The fine, uniform and closed cell structure results from the incorporation of a special

nucleating agent.

Applications

Borcell HE4873 is intended for the insulation of data cables using a gas injection foaming process.

NOTE: If using Borcell HE4873 as telephone single insulation, especially in petroleum jelly filled cables,

addition of extra stabilization may be needed to ensure long-term heat stability.

Specifications

Borcell HE4873 meets the applicable requirements as below when processed using sound extrusion practice

and testing procedure:

- ASTM D 1248 Type III, Category 3

- ISO 1872-PE, KEGHN, 45-D045

- EN 50288

- EN 50290-2-23

Physical Properties

Typical Value* Unit Test Method

Density 948 kg/m3 ISO 1872-2/ISO 1183-D

Melt Flow Rate (140°C, 5 kg) 5.0 g/10 min ISO 1133

Tensile Strength 25 MPa ISO 527

Elongation 200 % ISO 527

Oxygen Induction Time, 200°C, Al-pan 40 min IEC 811-4-2/B

Durometer Hardness (1 sec) 61 Shore D ISO 868

Brittleness Temperature <- 76 °C ASTM D 746

* Data should not be used for specification work

BorcellTM is a trademark of Borealis A/S.

Electrical Properties

Typical Value* Unit Test Method

Dielectric Constant (1 MHz) 2.3 - IEC 60250

Dissipation Factor (1 MHz) 400 - IEC 60250

DC Volume Resistivity 10^16 Ω cm IEC 60093

Dielectric Strength 22 kV/mm IEC 60243

* Data should not be used for specification work

Processing Guidelines

Borcell HE4873 can be processed over a wide range of conditions. The construction, line speed and type

of gas injection system play an important role when selecting proper process conditions.

As a guideline the following figures are given for extruders equipped with five zones on the barrel, head

and die.

Symmetric pair cables

Barrel 160 °C /170°C / 215°C / 205°C/ 210° C

Head 220 °C

Die 220 °C

Delivery

Form: Granules

Package: 25 kg bags - 1375 kg loads

1100 kg (nominal) Octabins

Bulk

Safety

Borcell HE4873 is not classified as a dangerous preparation.

The product is supplied in form of free-flowing granules of approximately 3 - 4 mm size and can be readily

handled with commercially available equipment. Handling and transport of the product may generate some

dust and fines, which constitute a potential hazard for dust explosion. All metal parts in the system should

therefore be properly grounded. Properly designed equipment and good housekeeping will reduce the risk.

Check and follow local codes and regulations!

Inhalation of any type of dust should be avoided as it may cause irritation of the respiratory system.

The product is intended for industrial use only. A Safety Data Sheet is available on request. Please contact

your Borealis representative for more details on various aspects of safety, recovery and disposal of the

product.

Disclaimer

The information contained herein is to our knowledge accurate and reliable as of the date of publication. Borealis extends no warranties

and makes no representations as to the accuracy or completeness of the information contained herein, and assumes no responsibility

regarding the consequences of its use or for any printing errors.

Our products are intended for sale to industrial and commercial customers. It is the customer's responsibility to inspect and test our products

in order to satisfy himself as to the suitability of the products for the customer's particular purpose. The customer is also responsible

for the appropriate, safe and legal use, processing and handling of our products. Nothing herein shall constitute any warranty (express or

implied, of merchantability, fitness for a particular purpose, compliance with performance indicators, conformity to samples or models,

non-infringement or otherwise), nor is protection from any law or patent to be inferred. No statement herein shall be construed as an

endorsement of any product or process.

Insofar as products supplied by Borealis or its subsidiary companies are used in conjunction with third party materials, it is the responsibility

of the customer to obtain all necessary information relating to the third party materials and ensure that Borealis’ products when used

together with these materials are suitable for the customer’s particular purpose. No liability can be accepted in respect of the use of Borealis’

products in conjunction with other materials. The information contained herein relates exclusively to our products when not used in

conjunction with any third party materials.

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真給力!