阅读说明：本技术 一种冷热水塑料管材管件用着色母料 (Coloring master batch for cold and hot water plastic pipe fittings ) 是由 邵世容 薛燕 马苗 陈旭 郑凌叶 于 2019-10-18 设计创作，主要内容包括：本发明公开了一种新的冷热水塑料管材管件用着色母料,属于塑料添加剂技术领域。所述着色母料包括以下按重量百分比计的原料：一种冷热水塑料管材管件用着色母料,其特征在于：包括以下按质量百分比计的原料：线性低密度聚乙烯25～55%,线性聚乙烯0～30%,炭黑0～50%,抗氧剂0.5～2.5%,功能助剂0.5～2%,钛白粉0～36%,酞青蓝0～8%,锌铁黄0～4%,永固紫0～0.001%。本发明的着色母料用于PP管,PPR管的着色,制得的管材管件具有氧化诱导期长,耐候性佳的优点,能够满足新的标准要求,从而促进行业持续发展。(The invention discloses a novel coloring master batch for cold and hot water plastic pipe fittings, and belongs to the technical field of plastic additives. The coloring master batch comprises the following raw materials in percentage by weight: the coloring master batch for the cold and hot water plastic pipe fittings is characterized in that: the composite material comprises the following raw materials in percentage by mass: 25-55% of linear low-density polyethylene, 0-30% of linear polyethylene, 0-50% of carbon black, 0.5-2.5% of antioxidant, 0.5-2% of functional additive, 0-36% of titanium dioxide, 0-8% of phthalocyanine blue, 0-4% of zinc iron yellow and 0-0.001% of permanent violet. The coloring master batch is used for coloring PP pipes and PPR pipes, and the prepared pipe fittings have the advantages of long oxidation induction period and good weather resistance, and can meet the new standard requirements, thereby promoting the continuous development of the industry.)

1. The coloring master batch for the cold and hot water plastic pipe fittings is characterized in that: the composite material comprises the following raw materials in percentage by mass: 25-55% of linear low-density polyethylene, 0-30% of linear polyethylene, 0-50% of carbon black, 0.5-2.5% of antioxidant, 0.5-2% of functional additive, 0-36% of titanium dioxide, 0-8% of phthalocyanine blue, 0-4% of zinc iron yellow and 0-0.001% of permanent violet.

2. A color concentrate for cold and hot water plastic pipe fittings as claimed in claim 1, wherein: the linear low density polyethylene is a powdery resin with a melt mass flow rate of more than 45g/10min and a density of less than 0.926.

3. A color concentrate for cold and hot water plastic pipe fittings as claimed in claim 1, wherein: the linear polyethylene is granular resin with the melt mass flow rate of 1.7-2.3 g/10 min.

4. A color concentrate for cold and hot water plastic pipe fittings as claimed in claim 1, wherein: the average particle size of the carbon black is 10-25 mm, and the oil absorption value is not more than 7 x 10^-5m³The ash content is less than 0.5 percent and the thermal weight loss is less than 0.5 percent, and the production process is a groove method.

5. A color concentrate for cold and hot water plastic pipe fittings as claimed in claim 1, wherein: the antioxidant is S0N0X 225, wherein the primary antioxidant 1010 accounts for 47-53% of the total amount of the antioxidant, and the secondary antioxidant 168 accounts for 47-53% of the total amount of the antioxidant.

6. A color concentrate for cold and hot water plastic pipe fittings as claimed in claim 1, wherein: the functional additive is a PLASTAID-T multifunctional plastic additive.

Technical Field

The invention relates to a coloring master batch, in particular to a coloring master batch for cold and hot water plastic pipe fittings, and belongs to the technical field of plastic additives.

Background

The plastic pipe fitting for cold and hot water delivery and distribution is widely used in industrial and civil buildings, especially drinking water pipe fittings, and has the advantages of good performance quality, guarantee of sanitary conditions, long service life and direct influence on the safety of people's lives and properties and the living cost. However, the traditional production process is that pipe and tube production enterprises mix materials, mix materials and extrude for production. Not only influences the environment and the health of production workers, but also can not fully ensure the product quality and the service life. Therefore, newly issued standards of the country clearly stipulate, firstly, raw materials of pipe fittings for cold and hot water delivery and distribution produced by enterprises need to use specially produced mixed materials, and secondly, the new standards improve or increase oxidation induction periods, carbon black or pigment dispersibility, melting temperature, butt fusion tensile strength, melt mass flow rate, ash content and the like of products under different temperature and pressure test conditions, so that the requirements of the use safety, service life, sanitary indexes and technical indexes of the products are influenced. In view of the above situation, a coloring master batch for various PE drinking water pipe fittings and PP-R cold and hot water pipe fittings of black, white, gray, blue and the like is needed to meet the development needs of the industry, and the problems encountered in the research and development process are that an oxidant is incompatible with conventional PE and PPR, and the problems of precipitation, uneven dispersion of the oxidant and poor product quality occur after the antioxidant is added, so that the new standard is difficult to achieve.

Disclosure of Invention

The invention aims to provide a novel coloring master batch for cold and hot water plastic pipe fittings, which aims to solve the technical problem that the antioxidant is not uniformly dispersed and cannot meet the requirements of new industry standards in the prior art.

In order to achieve the purpose, the technical scheme of the invention is as follows: the coloring master batch for the cold and hot water plastic pipe fittings comprises the following raw materials in percentage by mass: 25-55% of linear low-density polyethylene, 0-30% of linear polyethylene, 0-50% of carbon black, 0.5-2.5% of antioxidant, 0.5-2% of functional additive, 0-36% of titanium dioxide, 0-8% of phthalocyanine blue, 0-4% of zinc iron yellow and 0-0.001% of permanent violet.

In order to better implement the invention, further, the linear low density polyethylene in the invention is a powdery resin with a melt mass flow rate of more than 45g/10min and a density of less than 0.926.

Further, the linear polyethylene in the present invention is a granular resin having a melt mass flow rate of 1.7 to 2.3g/10 min.

Further, the average particle size of the carbon black is 10-25 mm, and the oil absorption value is less than or equal to 7 x 10^-5m³The ash content is less than 0.5 percent and the thermal weight loss is less than 0.5 percent, and the production process is a groove method.

Further, the antioxidant in the invention is an S0N0X 225 composite antioxidant, wherein the primary antioxidant 1010 accounts for 47-53% of the total amount of the antioxidant, and the secondary antioxidant 168 accounts for 47-53% of the total amount of the antioxidant.

Furthermore, the functional additive in the invention is a PLASTICS-T multifunctional additive with triple functions of wetting, dispersing and coupling.

The invention has the beneficial effects that:

(1) according to the invention, through specific selection of the pigment, the auxiliary agent and the carrier resin and specific proportion design, the oxidation induction period is prolonged to more than 30min under the condition of pure oxygen at 210 ℃, the addition proportion of the master batch is 2%, the ash content is less than 0.5% (PPR pipe) after the master batch is calcined at the temperature of 600 ℃, the ash content is less than 1% (black PE pipe) after the master batch is calcined at the temperature of 900 ℃, and the light transmittance of the PPR pipe is less than 0.2%.

(2) By the formula design of the pigment, the PE and PPR pipe fitting master batch with black and white and different gray levels, blue and blue green can be prepared, the pigment concentration is high, and the dispersibility is good.

(3) By selecting two resins, the first resin: the linear low-density powder polyethylene is firstly melted and mixed with the antioxidant, and then the melted linear PE fine particles are ground and kneaded in the stirring process, so that the dispersibility of the antioxidant and the carrier resin is greatly improved, and the dispersing and wetting effects are further improved by adding the functional auxiliary agent.

(4) Preferably, the antioxidant selected by the invention is the antioxidant S0N0X 225, which has higher molecular weight, high thermal stability, high antioxidant degradation efficiency, economy, effectiveness, safety and no toxicity, can reduce the number of volatile matters, does not generate adverse reaction with other hosts, is particularly suitable for cold and hot water pipe fittings with high safety level requirements, realizes the purposes of delaying decomposition of hydrogen peroxide and blocking melting and decomposition of molecular chains by matching main oxidation and auxiliary antioxidants, and greatly improves the oxidation induction period of products.

(5) Because the antioxidant is incompatible with PE and PP-R, the wetting dispersion coupling of the nonpolar substance of the antioxidant and polar materials such as polyolefin is solved by selecting the PLASTAID-T multifunctional plastic additive, and the purpose of high dispersion of the antioxidant in a carrier is achieved.

Detailed Description

The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.